#
42fd623b |
|
09-Feb-2024 |
Ian Rogers <irogers@google.com> |
perf maps: Get map before returning in maps__find Finding a map is done under a lock, returning the map without a reference count means it can be removed without notice and causing uses after free. Grab a reference count to the map within the lock region and return this. Fix up locations that need a map__put following this. Signed-off-by: Ian Rogers <irogers@google.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: K Prateek Nayak <kprateek.nayak@amd.com> Cc: James Clark <james.clark@arm.com> Cc: Vincent Whitchurch <vincent.whitchurch@axis.com> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: Colin Ian King <colin.i.king@gmail.com> Cc: Changbin Du <changbin.du@huawei.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Song Liu <song@kernel.org> Cc: Leo Yan <leo.yan@linux.dev> Cc: Athira Rajeev <atrajeev@linux.vnet.ibm.com> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Artem Savkov <asavkov@redhat.com> Cc: bpf@vger.kernel.org Signed-off-by: Namhyung Kim <namhyung@kernel.org> Link: https://lore.kernel.org/r/20240210031746.4057262-3-irogers@google.com
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#
1a27fc01 |
|
02-Nov-2023 |
Ian Rogers <irogers@google.com> |
perf record: Lazy load kernel symbols Commit 5b7ba82a75915e73 ("perf symbols: Load kernel maps before using") changed it so that loading a kernel DSO would cause the symbols for the DSO to be eagerly loaded. For 'perf record' this is overhead as the symbols won't be used. Add a field to 'struct symbol_conf' to control the behavior and disable it for 'perf record' and 'perf inject'. Reviewed-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ian Rogers <irogers@google.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Athira Jajeev <atrajeev@linux.vnet.ibm.com> Cc: Changbin Du <changbin.du@huawei.com> Cc: Colin Ian King <colin.i.king@gmail.com> Cc: Dmitrii Dolgov <9erthalion6@gmail.com> Cc: German Gomez <german.gomez@arm.com> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: K Prateek Nayak <kprateek.nayak@amd.com> Cc: Kajol Jain <kjain@linux.ibm.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Li Dong <lidong@vivo.com> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Miguel Ojeda <ojeda@kernel.org> Cc: Ming Wang <wangming01@loongson.cn> Cc: Nick Terrell <terrelln@fb.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ravi Bangoria <ravi.bangoria@amd.com> Cc: Sandipan Das <sandipan.das@amd.com> Cc: Sean Christopherson <seanjc@google.com> Cc: Steinar H. Gunderson <sesse@google.com> Cc: Vincent Whitchurch <vincent.whitchurch@axis.com> Cc: Wenyu Liu <liuwenyu7@huawei.com> Cc: Yang Jihong <yangjihong1@huawei.com> Link: https://lore.kernel.org/r/20231102175735.2272696-3-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
f9dd531c |
|
24-Jul-2023 |
Namhyung Kim <namhyung@kernel.org> |
perf symbols: Add kallsyms__get_symbol_start() The kallsyms__get_symbol_start() to get any symbol address from kallsyms. The existing kallsyms__get_function_start() only allows text symbols so create this to allow data symbols too. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lore.kernel.org/r/20230725001929.368041-1-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
36cee69f |
|
26-Jun-2023 |
Namhyung Kim <namhyung@kernel.org> |
perf tools: Do not remove addr_location.thread in thread__find_map() The thread__find_map() is to find a map for a given address in the given thread's address space. It searches maps based on the cpu mode and fills various information in the addr_location data structure. It might change al->maps and al->map, but not al->thread. Then I think no reason to not set the al->thread at the beginning. Also get rid of the duplicate 'al->map = NULL' part. Fixes: 0dd5041c9a0ea ("perf addr_location: Add init/exit/copy functions") Acked-by: Ian Rogers <irogers@google.com> Acked-by: James Clark <james.clark@arm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Suzuki K Poulose <suzuki.poulose@arm.com> Cc: Mike Leach <mike.leach@linaro.org> Cc: Leo Yan <leo.yan@linaro.org> Cc: John Garry <john.g.garry@oracle.com> Cc: Will Deacon <will@kernel.org> Signed-off-by: Namhyung Kim <namhyung@kernel.org>
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#
bffb5b0c |
|
08-Jun-2023 |
Ian Rogers <irogers@google.com> |
perf map/maps/thread: Changes to reference counting Fix missed reference count gets and puts as detected with leak sanitizer and reference count checking. Signed-off-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ali Saidi <alisaidi@amazon.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Athira Rajeev <atrajeev@linux.vnet.ibm.com> Cc: Brian Robbins <brianrob@linux.microsoft.com> Cc: Changbin Du <changbin.du@huawei.com> Cc: Dmitrii Dolgov <9erthalion6@gmail.com> Cc: Fangrui Song <maskray@google.com> Cc: German Gomez <german.gomez@arm.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Ivan Babrou <ivan@cloudflare.com> Cc: James Clark <james.clark@arm.com> Cc: Jing Zhang <renyu.zj@linux.alibaba.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: John Garry <john.g.garry@oracle.com> Cc: K Prateek Nayak <kprateek.nayak@amd.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Miguel Ojeda <ojeda@kernel.org> Cc: Mike Leach <mike.leach@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ravi Bangoria <ravi.bangoria@amd.com> Cc: Sean Christopherson <seanjc@google.com> Cc: Steinar H. Gunderson <sesse@google.com> Cc: Suzuki Poulouse <suzuki.poulose@arm.com> Cc: Wenyu Liu <liuwenyu7@huawei.com> Cc: Will Deacon <will@kernel.org> Cc: Yang Jihong <yangjihong1@huawei.com> Cc: Ye Xingchen <ye.xingchen@zte.com.cn> Cc: Yuan Can <yuancan@huawei.com> Cc: coresight@lists.linaro.org Cc: linux-arm-kernel@lists.infradead.org Link: https://lore.kernel.org/r/20230608232823.4027869-21-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
0dd5041c |
|
08-Jun-2023 |
Ian Rogers <irogers@google.com> |
perf addr_location: Add init/exit/copy functions struct addr_location holds references to multiple reference counted objects. Add init/exit functions to make maintenance of those more consistent with the rest of the code and to try to avoid leaks. Modification of thread reference counts isn't included in this change. Committer notes: I needed to initialize result to sample->ip to make sure is set to something, fixing a compile time error, mostly keeping the previous logic as build_alloc_func_list() already does debugging/error prints about what went wrong if it takes the 'goto out'. Signed-off-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ali Saidi <alisaidi@amazon.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Athira Rajeev <atrajeev@linux.vnet.ibm.com> Cc: Brian Robbins <brianrob@linux.microsoft.com> Cc: Changbin Du <changbin.du@huawei.com> Cc: Dmitrii Dolgov <9erthalion6@gmail.com> Cc: Fangrui Song <maskray@google.com> Cc: German Gomez <german.gomez@arm.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Ivan Babrou <ivan@cloudflare.com> Cc: James Clark <james.clark@arm.com> Cc: Jing Zhang <renyu.zj@linux.alibaba.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: John Garry <john.g.garry@oracle.com> Cc: K Prateek Nayak <kprateek.nayak@amd.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Miguel Ojeda <ojeda@kernel.org> Cc: Mike Leach <mike.leach@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ravi Bangoria <ravi.bangoria@amd.com> Cc: Sean Christopherson <seanjc@google.com> Cc: Steinar H. Gunderson <sesse@google.com> Cc: Suzuki Poulouse <suzuki.poulose@arm.com> Cc: Wenyu Liu <liuwenyu7@huawei.com> Cc: Will Deacon <will@kernel.org> Cc: Yang Jihong <yangjihong1@huawei.com> Cc: Ye Xingchen <ye.xingchen@zte.com.cn> Cc: Yuan Can <yuancan@huawei.com> Cc: coresight@lists.linaro.org Cc: linux-arm-kernel@lists.infradead.org Link: https://lore.kernel.org/r/20230608232823.4027869-7-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
620be847 |
|
08-Jun-2023 |
Ian Rogers <irogers@google.com> |
perf addr_location: Move to its own header addr_location is a common abstraction, move it into its own header and source file in preparation for wider clean up. Signed-off-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ali Saidi <alisaidi@amazon.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Athira Rajeev <atrajeev@linux.vnet.ibm.com> Cc: Brian Robbins <brianrob@linux.microsoft.com> Cc: Changbin Du <changbin.du@huawei.com> Cc: Dmitrii Dolgov <9erthalion6@gmail.com> Cc: Fangrui Song <maskray@google.com> Cc: German Gomez <german.gomez@arm.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Ivan Babrou <ivan@cloudflare.com> Cc: James Clark <james.clark@arm.com> Cc: Jing Zhang <renyu.zj@linux.alibaba.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: John Garry <john.g.garry@oracle.com> Cc: K Prateek Nayak <kprateek.nayak@amd.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Miguel Ojeda <ojeda@kernel.org> Cc: Mike Leach <mike.leach@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ravi Bangoria <ravi.bangoria@amd.com> Cc: Sean Christopherson <seanjc@google.com> Cc: Steinar H. Gunderson <sesse@google.com> Cc: Suzuki Poulouse <suzuki.poulose@arm.com> Cc: Wenyu Liu <liuwenyu7@huawei.com> Cc: Will Deacon <will@kernel.org> Cc: Yang Jihong <yangjihong1@huawei.com> Cc: Ye Xingchen <ye.xingchen@zte.com.cn> Cc: Yuan Can <yuancan@huawei.com> Cc: coresight@lists.linaro.org Cc: linux-arm-kernel@lists.infradead.org Link: https://lore.kernel.org/r/20230608232823.4027869-6-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
ee84a303 |
|
08-Jun-2023 |
Ian Rogers <irogers@google.com> |
perf thread: Add accessor functions for thread Using accessors will make it easier to add reference count checking in later patches. Committer notes: thread->nsinfo wasn't wrapped as it is used together with nsinfo__zput(), where does a trick to set the field with a refcount being dropped to NULL, and that doesn't work well with using thread__nsinfo(thread), that loses the &thread->nsinfo pointer. When refcount checking is added to 'struct thread', later in this series, nsinfo__zput(RC_CHK_ACCESS(thread)->nsinfo) will be used to check the thread pointer. Signed-off-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ali Saidi <alisaidi@amazon.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Athira Rajeev <atrajeev@linux.vnet.ibm.com> Cc: Brian Robbins <brianrob@linux.microsoft.com> Cc: Changbin Du <changbin.du@huawei.com> Cc: Dmitrii Dolgov <9erthalion6@gmail.com> Cc: Fangrui Song <maskray@google.com> Cc: German Gomez <german.gomez@arm.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Ivan Babrou <ivan@cloudflare.com> Cc: James Clark <james.clark@arm.com> Cc: Jing Zhang <renyu.zj@linux.alibaba.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: John Garry <john.g.garry@oracle.com> Cc: K Prateek Nayak <kprateek.nayak@amd.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Miguel Ojeda <ojeda@kernel.org> Cc: Mike Leach <mike.leach@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ravi Bangoria <ravi.bangoria@amd.com> Cc: Sean Christopherson <seanjc@google.com> Cc: Steinar H. Gunderson <sesse@google.com> Cc: Suzuki Poulouse <suzuki.poulose@arm.com> Cc: Wenyu Liu <liuwenyu7@huawei.com> Cc: Will Deacon <will@kernel.org> Cc: Yang Jihong <yangjihong1@huawei.com> Cc: Ye Xingchen <ye.xingchen@zte.com.cn> Cc: Yuan Can <yuancan@huawei.com> Cc: coresight@lists.linaro.org Cc: linux-arm-kernel@lists.infradead.org Link: https://lore.kernel.org/r/20230608232823.4027869-4-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
4b87406a |
|
17-May-2023 |
K Prateek Nayak <kprateek.nayak@amd.com> |
perf stat record: Save cache level information When aggregating based on cache-topology, in addition to the aggregation mode, knowing the cache level at which data is aggregated is necessary to ensure consistency when running 'perf stat record' and later 'perf stat report'. Save the cache level for aggregation as a part of the env data that can be later retrieved when running perf stat report. Suggested-by: Gautham Shenoy <gautham.shenoy@amd.com> Signed-off-by: K Prateek Nayak <kprateek.nayak@amd.com> Acked-by: Ian Rogers <irogers@google.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ananth Narayan <ananth.narayan@amd.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ravi Bangoria <ravi.bangoria@amd.com> Cc: Sandipan Das <sandipan.das@amd.com> Cc: Stephane Eranian <eranian@google.com> Cc: Wen Pu <puwen@hygon.cn> Link: https://lore.kernel.org/r/20230517172745.5833-4-kprateek.nayak@amd.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
ea0c5239 |
|
10-Apr-2023 |
Ian Rogers <irogers@google.com> |
perf util: Move perf_guest/host declarations The definitions are in util.c so move the declarations to match. Signed-off-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Athira Rajeev <atrajeev@linux.vnet.ibm.com> Cc: Chengdong Li <chengdongli@tencent.com> Cc: Denis Nikitin <denik@chromium.org> Cc: Florian Fischer <florian.fischer@muhq.space> Cc: Ingo Molnar <mingo@redhat.com> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: John Garry <john.g.garry@oracle.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Martin Liška <mliska@suse.cz> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Mike Leach <mike.leach@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Raul Silvera <rsilvera@google.com> Cc: Ravi Bangoria <ravi.bangoria@amd.com> Cc: Rob Herring <robh@kernel.org> Cc: Sean Christopherson <seanjc@google.com> Cc: Suzuki Poulouse <suzuki.poulose@arm.com> Cc: Will Deacon <will@kernel.org> Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com> Cc: coresight@lists.linaro.org Cc: linux-arm-kernel@lists.infradead.org Link: https://lore.kernel.org/r/20230410162511.3055900-2-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
ec417ad4 |
|
04-Apr-2023 |
Ian Rogers <irogers@google.com> |
perf map: Changes to reference counting When a pointer to a map exists do a get, when that pointer is overwritten or freed, put the map. This avoids issues with gets and puts being inconsistently used causing, use after puts, etc. For example, the map in struct addr_location is changed to hold a reference count. Reference count checking and address sanitizer were used to identify issues. Signed-off-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Bayduraev <alexey.v.bayduraev@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Darren Hart <dvhart@infradead.org> Cc: Davidlohr Bueso <dave@stgolabs.net> Cc: Dmitriy Vyukov <dvyukov@google.com> Cc: Eric Dumazet <edumazet@google.com> Cc: German Gomez <german.gomez@arm.com> Cc: Hao Luo <haoluo@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: John Garry <john.g.garry@oracle.com> Cc: Kajol Jain <kjain@linux.ibm.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Madhavan Srinivasan <maddy@linux.ibm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Miaoqian Lin <linmq006@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Riccardo Mancini <rickyman7@gmail.com> Cc: Shunsuke Nakamura <nakamura.shun@fujitsu.com> Cc: Song Liu <song@kernel.org> Cc: Stephane Eranian <eranian@google.com> Cc: Stephen Brennan <stephen.s.brennan@oracle.com> Cc: Steven Rostedt (VMware) <rostedt@goodmis.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Thomas Richter <tmricht@linux.ibm.com> Cc: Yury Norov <yury.norov@gmail.com> Link: https://lore.kernel.org/r/20230404205954.2245628-2-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
78a1f7cd |
|
04-Apr-2023 |
Ian Rogers <irogers@google.com> |
perf map: Add helper for ->map_ip() and ->unmap_ip() Later changes will add reference count checking for struct map, add a helper function to invoke the map_ip and unmap_ip function pointers. The helper allows the reference count check to be in fewer places. Committer notes: Add missing conversions to: tools/perf/util/map.c tools/perf/util/cs-etm.c tools/perf/util/annotate.c tools/perf/arch/powerpc/util/sym-handling.c tools/perf/arch/s390/annotate/instructions.c Signed-off-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Bayduraev <alexey.v.bayduraev@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Darren Hart <dvhart@infradead.org> Cc: Davidlohr Bueso <dave@stgolabs.net> Cc: Dmitriy Vyukov <dvyukov@google.com> Cc: Eric Dumazet <edumazet@google.com> Cc: German Gomez <german.gomez@arm.com> Cc: Hao Luo <haoluo@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: John Garry <john.g.garry@oracle.com> Cc: Kajol Jain <kjain@linux.ibm.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Madhavan Srinivasan <maddy@linux.ibm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Miaoqian Lin <linmq006@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Riccardo Mancini <rickyman7@gmail.com> Cc: Shunsuke Nakamura <nakamura.shun@fujitsu.com> Cc: Song Liu <song@kernel.org> Cc: Stephane Eranian <eranian@google.com> Cc: Stephen Brennan <stephen.s.brennan@oracle.com> Cc: Steven Rostedt (VMware) <rostedt@goodmis.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Thomas Richter <tmricht@linux.ibm.com> Cc: Yury Norov <yury.norov@gmail.com> Link: https://lore.kernel.org/r/20230404205954.2245628-2-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
63df0e4b |
|
20-Mar-2023 |
Ian Rogers <irogers@google.com> |
perf map: Add accessor for dso Later changes will add reference count checking for struct map, with dso being the most frequently accessed variable. Add an accessor so that the reference count check is only necessary in one place. Additional changes: - add a dso variable to avoid repeated map__dso calls. - in builtin-mem.c dump_raw_samples, code only partially tested for dso == NULL. Make the possibility of NULL consistent. - in thread.c thread__memcpy fix use of spaces and use tabs. Committer notes: Did missing conversions on these files: tools/perf/arch/powerpc/util/skip-callchain-idx.c tools/perf/arch/powerpc/util/sym-handling.c tools/perf/ui/browsers/hists.c tools/perf/ui/gtk/annotate.c tools/perf/util/cs-etm.c tools/perf/util/thread.c tools/perf/util/unwind-libunwind-local.c tools/perf/util/unwind-libunwind.c Signed-off-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Bayduraev <alexey.v.bayduraev@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Darren Hart <dvhart@infradead.org> Cc: Davidlohr Bueso <dave@stgolabs.net> Cc: Dmitriy Vyukov <dvyukov@google.com> Cc: Eric Dumazet <edumazet@google.com> Cc: German Gomez <german.gomez@arm.com> Cc: Hao Luo <haoluo@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: John Garry <john.g.garry@oracle.com> Cc: Kajol Jain <kjain@linux.ibm.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Madhavan Srinivasan <maddy@linux.ibm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Miaoqian Lin <linmq006@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Riccardo Mancini <rickyman7@gmail.com> Cc: Shunsuke Nakamura <nakamura.shun@fujitsu.com> Cc: Song Liu <song@kernel.org> Cc: Stephane Eranian <eranian@google.com> Cc: Stephen Brennan <stephen.s.brennan@oracle.com> Cc: Steven Rostedt (VMware) <rostedt@goodmis.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Thomas Richter <tmricht@linux.ibm.com> Cc: Yury Norov <yury.norov@gmail.com> Link: https://lore.kernel.org/r/20230320212248.1175731-2-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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5ab6d715 |
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20-Mar-2023 |
Ian Rogers <irogers@google.com> |
perf maps: Add functions to access maps Introduce functions to access struct maps. These functions reduce the number of places reference counting is necessary. While tidying APIs do some small const-ification, in particlar to unwind_libunwind_ops. Committer notes: Fixed up tools/perf/util/unwind-libunwind.c: - return ops->get_entries(cb, arg, thread, data, max_stack); + return ops->get_entries(cb, arg, thread, data, max_stack, best_effort); Signed-off-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Bayduraev <alexey.v.bayduraev@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Darren Hart <dvhart@infradead.org> Cc: Davidlohr Bueso <dave@stgolabs.net> Cc: Dmitriy Vyukov <dvyukov@google.com> Cc: Eric Dumazet <edumazet@google.com> Cc: German Gomez <german.gomez@arm.com> Cc: Hao Luo <haoluo@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: John Garry <john.g.garry@oracle.com> Cc: Kajol Jain <kjain@linux.ibm.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Madhavan Srinivasan <maddy@linux.ibm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Miaoqian Lin <linmq006@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Riccardo Mancini <rickyman7@gmail.com> Cc: Shunsuke Nakamura <nakamura.shun@fujitsu.com> Cc: Song Liu <song@kernel.org> Cc: Stephane Eranian <eranian@google.com> Cc: Stephen Brennan <stephen.s.brennan@oracle.com> Cc: Steven Rostedt (VMware) <rostedt@goodmis.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Thomas Richter <tmricht@linux.ibm.com> Cc: Yury Norov <yury.norov@gmail.com> Link: https://lore.kernel.org/r/20230320212248.1175731-2-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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3812d298 |
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10-Jun-2022 |
Adrian Hunter <adrian.hunter@intel.com> |
perf record: Add finished init event In preparation for recording sideband events in a virtual machine guest so that they can be injected into a host perf.data file. This is needed to enable injecting events after the initial synthesized user events (that have an all zero id sample) but before regular events. Committer notes: Add entry about PERF_RECORD_FINISHED_INIT to tools/perf/Documentation/perf.data-file-format.txt. Committer testing: Before: # perf report -D | grep FINISHED 0 0x5910 [0x8]: PERF_RECORD_FINISHED_ROUND FINISHED_ROUND events: 1 ( 0.5%) # After: # perf record -- sleep 1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.020 MB perf.data (7 samples) ] # perf report -D | grep FINISHED 0 0x5068 [0x8]: PERF_RECORD_FINISHED_INIT: unhandled! 0 0x5390 [0x8]: PERF_RECORD_FINISHED_ROUND FINISHED_ROUND events: 1 ( 0.5%) FINISHED_INIT events: 1 ( 0.5%) # Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Ian Rogers <irogers@google.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lore.kernel.org/r/20220610113316.6682-5-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
096fc361 |
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17-May-2022 |
Adrian Hunter <adrian.hunter@intel.com> |
perf tools: Add guest_code support A common case for KVM test programs is that the test program acts as the hypervisor, creating, running and destroying the virtual machine, and providing the guest object code from its own object code. In this case, the VM is not running an OS, but only the functions loaded into it by the hypervisor test program, and conveniently, loaded at the same virtual addresses. Normally to resolve addresses, MMAP events are needed to map addresses back to the object code and debug symbols for that object code. Currently, there is no way to get such mapping information from guests but, in the scenario described above, the guest has the same mappings as the hypervisor, so support for that scenario can be achieved. To support that, copy the host thread's maps to the guest thread's maps. Note, we do not discover the guest until we encounter a guest event, which works well because it is not until then that we know that the host thread's maps have been set up. Typically the main function for the guest object code is called "guest_code", hence the name chosen for this feature. Note, that is just a convention, the function could be named anything, and the tools do not care. This is primarily aimed at supporting Intel PT, or similar, where trace data can be recorded for a guest. Refer to the final patch in this series "perf intel-pt: Add guest_code support" for an example. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Leo Yan <leo.yan@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: kvm@vger.kernel.org Link: https://lore.kernel.org/r/20220517131011.6117-4-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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1a97cee6 |
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11-Feb-2022 |
Ian Rogers <irogers@google.com> |
perf maps: Use a pointer for kmaps struct maps is reference counted, using a pointer is more idiomatic. Committer notes: Delay: maps = machine__kernel_maps(&vmlinux); To after: machine__init(&vmlinux, "", HOST_KERNEL_ID); To avoid this on f34: In file included from /var/home/acme/git/perf/tools/perf/util/build-id.h:10, from /var/home/acme/git/perf/tools/perf/util/dso.h:13, from tests/vmlinux-kallsyms.c:8: In function ‘machine__kernel_maps’, inlined from ‘test__vmlinux_matches_kallsyms’ at tests/vmlinux-kallsyms.c:122:22: /var/home/acme/git/perf/tools/perf/util/machine.h:86:23: error: ‘vmlinux.kmaps’ is used uninitialized [-Werror=uninitialized] 86 | return machine->kmaps; | ~~~~~~~^~~~~~~ tests/vmlinux-kallsyms.c: In function ‘test__vmlinux_matches_kallsyms’: tests/vmlinux-kallsyms.c:121:34: note: ‘vmlinux’ declared here 121 | struct machine kallsyms, vmlinux; | ^~~~~~~ cc1: all warnings being treated as errors Signed-off-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Bayduraev <alexey.v.bayduraev@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: André Almeida <andrealmeid@collabora.com> Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Darren Hart <dvhart@infradead.org> Cc: Davidlohr Bueso <dave@stgolabs.net> Cc: Dmitriy Vyukov <dvyukov@google.com> Cc: Eric Dumazet <edumazet@google.com> Cc: German Gomez <german.gomez@arm.com> Cc: Hao Luo <haoluo@google.com> Cc: James Clark <james.clark@arm.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: John Garry <john.garry@huawei.com> Cc: Kajol Jain <kjain@linux.ibm.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Madhavan Srinivasan <maddy@linux.ibm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Miaoqian Lin <linmq006@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Riccardo Mancini <rickyman7@gmail.com> Cc: Shunsuke Nakamura <nakamura.shun@fujitsu.com> Cc: Song Liu <song@kernel.org> Cc: Stephane Eranian <eranian@google.com> Cc: Stephen Brennan <stephen.s.brennan@oracle.com> Cc: Steven Rostedt (VMware) <rostedt@goodmis.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Thomas Richter <tmricht@linux.ibm.com> Cc: Yury Norov <yury.norov@gmail.com> Link: http://lore.kernel.org/lkml/20220211103415.2737789-6-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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61750473 |
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07-Sep-2021 |
Adrian Hunter <adrian.hunter@intel.com> |
perf tools: Add support for PERF_RECORD_AUX_OUTPUT_HW_ID The PERF_RECORD_AUX_OUTPUT_HW_ID event provides a way to match AUX output data like Intel PT PEBS-via-PT back to the event that it came from, by providing a hardware ID that is present in the AUX output. Reviewed-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Reviewed-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: x86@kernel.org Link: http://lore.kernel.org/lkml/20210907163903.11820-3-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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61d9fc44 |
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07-Feb-2021 |
Jin Yao <yao.jin@linux.intel.com> |
perf script: Support filtering by hex address 'perf script' supports '-S' or '--symbol' options to only list the records for these symbols. A symbol is typically a name or hex address. If it's hex address, it is the start address of one symbol. While it would be useful if we can filter trace records by any hex address (not only the start address of symbol). So now we support filtering trace records by more conditions, such as: - symbol name - start address of symbol - any hexadecimal address - address range The comparison order is defined as: 1. symbol name comparison 2. symbol start address comparison. 3. any hexadecimal address comparison. 4. address range comparison. The idea is if we can get a valid address from -S list, we add the address to addr_list for address comparison otherwise we still leave it to sym_list for symbol comparison. Some examples: root@kbl-ppc:~# ./perf script -S ffffffff9a477308 perf 8562 [000] 347303.578858: 1 cycles: ffffffff9a477308 native_write_msr+0x8 ([kernel.kallsyms]) perf 8562 [000] 347303.578860: 1 cycles: ffffffff9a477308 native_write_msr+0x8 ([kernel.kallsyms]) perf 8562 [000] 347303.578861: 11 cycles: ffffffff9a477308 native_write_msr+0x8 ([kernel.kallsyms]) perf 8562 [001] 347303.578903: 1 cycles: ffffffff9a477308 native_write_msr+0x8 ([kernel.kallsyms]) perf 8562 [001] 347303.578905: 1 cycles: ffffffff9a477308 native_write_msr+0x8 ([kernel.kallsyms]) perf 8562 [001] 347303.578906: 15 cycles: ffffffff9a477308 native_write_msr+0x8 ([kernel.kallsyms]) perf 8562 [002] 347303.578952: 1 cycles: ffffffff9a477308 native_write_msr+0x8 ([kernel.kallsyms]) perf 8562 [002] 347303.578953: 1 cycles: ffffffff9a477308 native_write_msr+0x8 ([kernel.kallsyms]) Filter the traced records by hex address ffffffff9a477308. root@kbl-ppc:~# ./perf script -S ffffffff9a4dd4ce,ffffffff9a4d2de9,ffffffff9a6bf9f4 perf 8562 [001] 347303.578911: 311706 cycles: ffffffff9a6bf9f4 __kmalloc_node+0x204 ([kernel.kallsyms]) perf 8562 [002] 347303.578960: 354477 cycles: ffffffff9a4d2de9 sched_setaffinity+0x49 ([kernel.kallsyms]) perf 8562 [003] 347303.579015: 450958 cycles: ffffffff9a4dd4ce dequeue_task_fair+0x1ae ([kernel.kallsyms]) Filter the traced records by hex address ffffffff9a4dd4ce, ffffffff9a4d2de9, ffffffff9a6bf9f4. root@kbl-ppc:~# ./perf script -S ffffffff9a477309 --addr-range 16 perf 8562 [000] 347303.578863: 291 cycles: ffffffff9a47730a native_write_msr+0xa ([kernel.kallsyms]) perf 8562 [001] 347303.578907: 411 cycles: ffffffff9a47730a native_write_msr+0xa ([kernel.kallsyms]) perf 8562 [002] 347303.578956: 462 cycles: ffffffff9a47730f native_write_msr+0xf ([kernel.kallsyms]) perf 8562 [003] 347303.579010: 497 cycles: ffffffff9a47730f native_write_msr+0xf ([kernel.kallsyms]) perf 8562 [004] 347303.579059: 429 cycles: ffffffff9a47730f native_write_msr+0xf ([kernel.kallsyms]) perf 8562 [005] 347303.579109: 408 cycles: ffffffff9a47730a native_write_msr+0xa ([kernel.kallsyms]) perf 8562 [006] 347303.579159: 460 cycles: ffffffff9a47730f native_write_msr+0xf ([kernel.kallsyms]) perf 8562 [007] 347303.579213: 436 cycles: ffffffff9a47730f native_write_msr+0xf ([kernel.kallsyms]) Filter the traced records from address range [ffffffff9a477309, ffffffff9a477309 + 15]. root@kbl-ppc:~# ./perf script -S "ffffffff9b163046,rcu_nmi_exit" perf 8562 [004] 347303.579060: 12013 cycles: ffffffff9b163046 exc_nmi+0x166 ([kernel.kallsyms]) perf 8562 [007] 347303.579214: 12138 cycles: ffffffff9b165944 rcu_nmi_exit+0x34 ([kernel.kallsyms]) Filter by address + symbol Signed-off-by: Jin Yao <yao.jin@linux.intel.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jin Yao <yao.jin@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20210207080935.31784-2-yao.jin@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
c69bf11a |
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28-Jan-2021 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Fix DSO filtering when not finding a map for a sampled address When we lookup an address and don't find a map we should filter that sample if the user specified a list of --dso entries to filter on, fix it. Before: $ perf script sleep 274800 2843.556162: 1 cycles:u: ffffffffbb26bff4 [unknown] ([unknown]) sleep 274800 2843.556168: 1 cycles:u: ffffffffbb2b047d [unknown] ([unknown]) sleep 274800 2843.556171: 1 cycles:u: ffffffffbb2706b2 [unknown] ([unknown]) sleep 274800 2843.556174: 6 cycles:u: ffffffffbb2b0267 [unknown] ([unknown]) sleep 274800 2843.556176: 59 cycles:u: ffffffffbb2b03b1 [unknown] ([unknown]) sleep 274800 2843.556180: 691 cycles:u: ffffffffbb26bff4 [unknown] ([unknown]) sleep 274800 2843.556189: 9160 cycles:u: 7fa9550eeaa3 __GI___tunables_init+0xf3 (/usr/lib64/ld-2.32.so) sleep 274800 2843.556312: 86937 cycles:u: 7fa9550e157b _dl_lookup_symbol_x+0x4b (/usr/lib64/ld-2.32.so) $ So we have some samples we somehow didn't find in a map for, if we now do: $ perf report --stdio --dso /usr/lib64/ld-2.32.so # dso: /usr/lib64/ld-2.32.so # # Total Lost Samples: 0 # # Samples: 8 of event 'cycles:u' # Event count (approx.): 96856 # # Overhead Command Symbol # ........ ....... ........................ # 89.76% sleep [.] _dl_lookup_symbol_x 9.46% sleep [.] __GI___tunables_init 0.71% sleep [k] 0xffffffffbb26bff4 0.06% sleep [k] 0xffffffffbb2b03b1 0.01% sleep [k] 0xffffffffbb2b0267 0.00% sleep [k] 0xffffffffbb2706b2 0.00% sleep [k] 0xffffffffbb2b047d $ After this patch we get the right output with just entries for the DSOs specified in --dso: $ perf report --stdio --dso /usr/lib64/ld-2.32.so # dso: /usr/lib64/ld-2.32.so # # Total Lost Samples: 0 # # Samples: 8 of event 'cycles:u' # Event count (approx.): 96856 # # Overhead Command Symbol # ........ ....... ........................ # 89.76% sleep [.] _dl_lookup_symbol_x 9.46% sleep [.] __GI___tunables_init $ # Fixes: 96415e4d3f5fdf9c ("perf symbols: Avoid unnecessary symbol loading when dso list is specified") Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20210128131209.GD775562@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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0b5c8821 |
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14-Dec-2020 |
Jiri Olsa <jolsa@kernel.org> |
perf tools: Add support to display build ids when available in PERF_RECORD_MMAP2 events Add support to display the build id in PERF_RECORD_MMAP2 events, when available: $ perf script --show-mmap-events | head -4 swapper ... @ 0xffffffff81000000 <ff1969b3ba5e43911208bb46fa7d5b1eb809e422>]: ---p [kernel.kallsyms]_text swapper ... @ 0 <5f62adb730272c9417883ae8b8a8ec224df8cddd>]: ---p /lib/modules/5.9.0-rc5buildid+/kernel/drivers/firmware/qemu_fw_cfg.ko swapper ... @ 0 <c9ac6e1dafc1ebdadb048f967854e810706c8bab>]: ---p /lib/modules/5.9.0-rc5buildid+/kernel/drivers/char/virtio_console.ko swapper ... @ 0 <86441a4c5b2c2ff5b440682f4c612bd4b426eb5c>]: ---p /lib/modules/5.9.0-rc5buildid+/kernel/lib/libcrc32c.ko $ perf report -D | grep MMAP2 | head -4 0 0 ... @ 0xffffffff81000000 <ff1969b3ba5e43911208bb46fa7d5b1eb809e422>]: ---p [kernel.kallsyms]_text 0 0 ... @ 0 <5f62adb730272c9417883ae8b8a8ec224df8cddd>]: ---p /lib/modules/5.9.0-rc5buildid+/kernel/drivers/firmware/qemu_fw_cfg.ko 0 0 ... @ 0 <c9ac6e1dafc1ebdadb048f967854e810706c8bab>]: ---p /lib/modules/5.9.0-rc5buildid+/kernel/drivers/char/virtio_console.ko 0 0 ... @ 0 <86441a4c5b2c2ff5b440682f4c612bd4b426eb5c>]: ---p /lib/modules/5.9.0-rc5buildid+/kernel/lib/libcrc32c.ko Adding build id data into <> brackets. Committer testing: $ perf record -vv --buildid-mmap sleep 1 |& grep -m1 build Enabling build id in mmap2 events. $ perf evlist -v cycles:u: size: 120, { sample_period, sample_freq }: 4000, sample_type: IP|TID|TIME|PERIOD, read_format: ID, disabled: 1, inherit: 1, exclude_kernel: 1, mmap: 1, comm: 1, freq: 1, enable_on_exec: 1, task: 1, sample_id_all: 1, exclude_guest: 1, mmap2: 1, comm_exec: 1, ksymbol: 1, bpf_event: 1, build_id: 1 $ $ perf script --show-mmap-events | head -4 sleep 274800 2843.556112: PERF_RECORD_MMAP2 274800/274800: [0x564e2fd32000(0x3000) @ 0x2000 <c37cb90b77c79fc719798b066d78ef121285843e>]: r-xp /usr/bin/sleep sleep 274800 2843.556129: PERF_RECORD_MMAP2 274800/274800: [0x7fa9550d7000(0x21000) @ 0x1000 <fc190f17c4f4dc4a8a26df18eaeed41ecdb2c61b>]: r-xp /usr/lib64/ld-2.32.so sleep 274800 2843.556140: PERF_RECORD_MMAP2 274800/274800: [0x7ffd8fa96000(0x2000) @ 0 00:00 0 0]: r-xp [vdso] sleep 274800 2843.556162: 1 cycles:u: ffffffffbb26bff4 [unknown] ([unknown]) $ $ perf buildid-list -i /usr/bin/sleep c37cb90b77c79fc719798b066d78ef121285843e $ perf buildid-list -i /usr/lib64/ld-2.32.so fc190f17c4f4dc4a8a26df18eaeed41ecdb2c61b And now on a system wide session to check the build ids synthesized for the kernel and some kernel modules: # perf record -a --buildid-mmap sleep 2s [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.717 MB perf.data ] # perf script --show-mmap-events | head -4 swapper 0 [000] 0.000000: PERF_RECORD_MMAP2 -1/0: [0xffffffffbb000000(0xe02557) @ 0xffffffffbb000000 <e71ac4b0b0631c27181dab25d63be18dad02feb8>]: ---p [kernel.kallsyms]_text swapper 0 [000] 0.000000: PERF_RECORD_MMAP2 -1/0: [0xffffffffc01dc000(0x6000) @ 0 <36d21515c0b22eb2859b6419a6cdf87ef4cd01c8>]: ---p /lib/modules/5.11.0-rc1+/kernel/drivers/i2c/i2c-dev.ko swapper 0 [000] 0.000000: PERF_RECORD_MMAP2 -1/0: [0xffffffffc01eb000(0x24000) @ 0 <c4fbfea32d0518b3e7879de8deca40ea142bb782>]: ---p /lib/modules/5.11.0-rc1+/kernel/fs/fuse/fuse.ko swapper 0 [000] 0.000000: PERF_RECORD_MMAP2 -1/0: [0xffffffffc0210000(0x7000) @ 0 <dd6cfb10ae66aa7b1e7b37000a004004be8092e0>]: ---p /lib/modules/5.11.0-rc1+/kernel/drivers/block/zram/zram.ko # perf buildid-list -h kernel Usage: perf buildid-list [<options>] -k, --kernel Show current kernel build id # perf buildid-list --kernel e71ac4b0b0631c27181dab25d63be18dad02feb8 # file /lib/modules/5.11.0-rc1+/kernel/drivers/i2c/i2c-dev.ko /lib/modules/5.11.0-rc1+/kernel/drivers/i2c/i2c-dev.ko: ELF 64-bit LSB relocatable, x86-64, version 1 (SYSV), BuildID[sha1]=36d21515c0b22eb2859b6419a6cdf87ef4cd01c8, with debug_info, not stripped # perf buildid-list -i /lib/modules/5.11.0-rc1+/kernel/drivers/i2c/i2c-dev.ko 36d21515c0b22eb2859b6419a6cdf87ef4cd01c8 # perf buildid-list -i /lib/modules/5.11.0-rc1+/kernel/fs/fuse/fuse.ko c4fbfea32d0518b3e7879de8deca40ea142bb782 # perf buildid-list -i /lib/modules/5.11.0-rc1+/kernel/drivers/block/zram/zram.ko dd6cfb10ae66aa7b1e7b37000a004004be8092e0 # Signed-off-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Acked-by: Ian Rogers <irogers@google.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexei Budankov <abudankov@huawei.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <songliubraving@fb.com> Cc: Stephane Eranian <eranian@google.com> Link: http://lore.kernel.org/lkml/20201214105457.543111-12-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
fc18380f |
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09-Sep-2020 |
Adrian Hunter <adrian.hunter@intel.com> |
perf script: Display negative tid in non-sample events The kernel can release tasks while they are still running. This can result in a task having no tid, in which case perf records a tid of -1. Improve the perf script output in that case. Example: Before: # cat ./autoreap.c #include <sys/types.h> #include <unistd.h> #include <sys/wait.h> #include <signal.h> struct sigaction act = { .sa_handler = SIG_IGN, }; int main() { pid_t child; int status = 0; sigaction(SIGCHLD, &act, NULL); child = fork(); if (child == 0) return 123; wait(&status); return 0; } # gcc -o autoreap autoreap.c # ./perf record -a -e dummy --switch-events ./autoreap [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.948 MB perf.data ] # ./perf script --show-task-events --show-switch-events | grep -C2 'autoreap\|4294967295\|-1' swapper 0 [004] 18462.673613: PERF_RECORD_SWITCH_CPU_WIDE OUT preempt next pid/tid: 25189/25189 perf 25189 [004] 18462.673614: PERF_RECORD_SWITCH_CPU_WIDE IN prev pid/tid: 0/0 autoreap 25189 [004] 18462.673800: PERF_RECORD_COMM exec: autoreap:25189/25189 autoreap 25189 [004] 18462.674042: PERF_RECORD_FORK(25191:25191):(25189:25189) autoreap 25189 [004] 18462.674050: PERF_RECORD_SWITCH_CPU_WIDE OUT next pid/tid: 0/0 swapper 0 [004] 18462.674051: PERF_RECORD_SWITCH_CPU_WIDE IN prev pid/tid: 25189/25189 swapper 0 [005] 18462.674083: PERF_RECORD_SWITCH_CPU_WIDE OUT preempt next pid/tid: 25191/25191 autoreap 25191 [005] 18462.674084: PERF_RECORD_SWITCH_CPU_WIDE IN prev pid/tid: 0/0 swapper 0 [003] 18462.674121: PERF_RECORD_SWITCH_CPU_WIDE OUT preempt next pid/tid: 11/11 rcu_preempt 11 [003] 18462.674121: PERF_RECORD_SWITCH_CPU_WIDE IN prev pid/tid: 0/0 rcu_preempt 11 [003] 18462.674124: PERF_RECORD_SWITCH_CPU_WIDE OUT next pid/tid: 0/0 swapper 0 [003] 18462.674124: PERF_RECORD_SWITCH_CPU_WIDE IN prev pid/tid: 11/11 autoreap 25191 [005] 18462.674138: PERF_RECORD_EXIT(25191:25191):(25189:25189) PERF_RECORD_SWITCH_CPU_WIDE OUT next pid/tid: 0/0 swapper 0 [005] 18462.674149: PERF_RECORD_SWITCH_CPU_WIDE IN prev pid/tid: 4294967295/4294967295 swapper 0 [004] 18462.674182: PERF_RECORD_SWITCH_CPU_WIDE OUT preempt next pid/tid: 25189/25189 autoreap 25189 [004] 18462.674183: PERF_RECORD_SWITCH_CPU_WIDE IN prev pid/tid: 0/0 autoreap 25189 [004] 18462.674218: PERF_RECORD_EXIT(25189:25189):(25188:25188) autoreap 25189 [004] 18462.674225: PERF_RECORD_SWITCH_CPU_WIDE OUT next pid/tid: 0/0 swapper 0 [004] 18462.674226: PERF_RECORD_SWITCH_CPU_WIDE IN prev pid/tid: 25189/25189 swapper 0 [007] 18462.674257: PERF_RECORD_SWITCH_CPU_WIDE OUT preempt next pid/tid: 25188/25188 After: # ./perf script --show-task-events --show-switch-events | grep -C2 'autoreap\|4294967295\|-1' swapper 0 [004] 18462.673613: PERF_RECORD_SWITCH_CPU_WIDE OUT preempt next pid/tid: 25189/25189 perf 25189 [004] 18462.673614: PERF_RECORD_SWITCH_CPU_WIDE IN prev pid/tid: 0/0 autoreap 25189 [004] 18462.673800: PERF_RECORD_COMM exec: autoreap:25189/25189 autoreap 25189 [004] 18462.674042: PERF_RECORD_FORK(25191:25191):(25189:25189) autoreap 25189 [004] 18462.674050: PERF_RECORD_SWITCH_CPU_WIDE OUT next pid/tid: 0/0 swapper 0 [004] 18462.674051: PERF_RECORD_SWITCH_CPU_WIDE IN prev pid/tid: 25189/25189 swapper 0 [005] 18462.674083: PERF_RECORD_SWITCH_CPU_WIDE OUT preempt next pid/tid: 25191/25191 autoreap 25191 [005] 18462.674084: PERF_RECORD_SWITCH_CPU_WIDE IN prev pid/tid: 0/0 swapper 0 [003] 18462.674121: PERF_RECORD_SWITCH_CPU_WIDE OUT preempt next pid/tid: 11/11 rcu_preempt 11 [003] 18462.674121: PERF_RECORD_SWITCH_CPU_WIDE IN prev pid/tid: 0/0 rcu_preempt 11 [003] 18462.674124: PERF_RECORD_SWITCH_CPU_WIDE OUT next pid/tid: 0/0 swapper 0 [003] 18462.674124: PERF_RECORD_SWITCH_CPU_WIDE IN prev pid/tid: 11/11 autoreap 25191 [005] 18462.674138: PERF_RECORD_EXIT(25191:25191):(25189:25189) :-1 -1 [005] 18462.674149: PERF_RECORD_SWITCH_CPU_WIDE OUT next pid/tid: 0/0 swapper 0 [005] 18462.674149: PERF_RECORD_SWITCH_CPU_WIDE IN prev pid/tid: -1/-1 swapper 0 [004] 18462.674182: PERF_RECORD_SWITCH_CPU_WIDE OUT preempt next pid/tid: 25189/25189 autoreap 25189 [004] 18462.674183: PERF_RECORD_SWITCH_CPU_WIDE IN prev pid/tid: 0/0 autoreap 25189 [004] 18462.674218: PERF_RECORD_EXIT(25189:25189):(25188:25188) autoreap 25189 [004] 18462.674225: PERF_RECORD_SWITCH_CPU_WIDE OUT next pid/tid: 0/0 swapper 0 [004] 18462.674226: PERF_RECORD_SWITCH_CPU_WIDE IN prev pid/tid: 25189/25189 swapper 0 [007] 18462.674257: PERF_RECORD_SWITCH_CPU_WIDE OUT preempt next pid/tid: 25188/25188 Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Yu-cheng Yu <yu-cheng.yu@intel.com> Link: http://lore.kernel.org/lkml/20200909084923.9096-2-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
7eeb9855 |
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12-May-2020 |
Adrian Hunter <adrian.hunter@intel.com> |
perf script: Show text poke address symbol It is generally more useful to show the symbol with an address. In this case, the print function requires the 'machine' which means changing callers to provide it as a parameter. It is optional because most events do not need it and the callers that matter can provide it. Committer notes: Made 'union perf_event' continue to be the first parameter to the perf_event__fprintf() and perf_event__fprintf_text_poke() events. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Borislav Petkov <bp@alien8.de> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt (VMware) <rostedt@goodmis.org> Cc: x86@kernel.org Link: http://lore.kernel.org/lkml/20200512121922.8997-16-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
246eba8e |
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12-May-2020 |
Adrian Hunter <adrian.hunter@intel.com> |
perf tools: Add support for PERF_RECORD_TEXT_POKE Add processing for PERF_RECORD_TEXT_POKE events. When a text poke event is processed, then the kernel dso data cache is updated with the poked bytes. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Borislav Petkov <bp@alien8.de> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt (VMware) <rostedt@goodmis.org> Cc: x86@kernel.org Link: http://lore.kernel.org/lkml/20200512121922.8997-12-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
1e76b171 |
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20-Apr-2020 |
Ian Rogers <irogers@google.com> |
perf script: Avoid NULL dereference on symbol al->sym may be NULL given current if conditions and may cause a segv. Fixes: d2bedb7863e9 ("perf script: Allow --symbol to accept hexadecimal addresses") Signed-off-by: Ian Rogers <irogers@google.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lore.kernel.org/lkml/20200421004329.43109-1-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
d2bedb78 |
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25-Mar-2020 |
Stephane Eranian <eranian@google.com> |
perf script: Allow --symbol to accept hexadecimal addresses This patch extends the perf script --symbols option to filter on hexadecimal addresses in addition to symbol names. This makes it easier to handle cases where symbols are aliased. With this patch, it is possible to mix and match symbols and hexadecimal addresses using the --symbols option. $ perf script --symbols=noploop,0x4007a0 Signed-off-by: Stephane Eranian <eranian@google.com> Reviewed-by: Ian Rogers <irogers@google.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20200325220802.15039-1-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
ba78c1c5 |
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25-Mar-2020 |
Namhyung Kim <namhyung@kernel.org> |
perf tools: Basic support for CGROUP event Implement basic functionality to support cgroup tracking. Each cgroup can be identified by inode number which can be read from userspace too. The actual cgroup processing will come in the later patch. Reported-by: kernel test robot <rong.a.chen@intel.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> [ fix perf test failure on sampling parsing ] Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20200325124536.2800725-4-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
9a29ceee |
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25-Nov-2019 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf maps: Rename 'mg' variables to 'maps' Continuing the merge of 'struct maps' with 'struct map_groups'. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-z8d14wrw393a0fbvmnk1bqd9@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
694520df |
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25-Nov-2019 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf addr_location: Rename al->mg to al->maps One more step on the merge of 'struct maps' with 'struct map_groups'. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-foo95pyyp3bhocbt7yd8qrvq@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
fe87797d |
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25-Nov-2019 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf thread: Rename thread->mg to thread->maps One more step on the merge of 'struct maps' with 'struct map_groups'. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-69vcr8pubpym90skxhmbwhiw@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
79b6bb73 |
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25-Nov-2019 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf maps: Merge 'struct maps' with 'struct map_groups' And pick the shortest name: 'struct maps'. The split existed because we used to have two groups of maps, one for functions and one for variables, but that only complicated things, sometimes we needed to figure out what was at some address and then had to first try it on the functions group and if that failed, fall back to the variables one. That split is long gone, so for quite a while we had only one struct maps per struct map_groups, simplify things by combining those structs. First patch is the minimum needed to merge both, follow up patches will rename 'thread->mg' to 'thread->maps', etc. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-hom6639ro7020o708trhxh59@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
d3a022cb |
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04-Nov-2019 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Add map_groups to 'struct addr_location' From there we can get al->mg->machine, so replace that field with the more useful 'struct map_groups' that for now we're obtaining from al->map->groups, and that is one thing getting into the way of maps being fully shareable. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-4qdducrm32tgrjupcp0kjh1e@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
055c67ed |
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18-Sep-2019 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Move event synthesizing routines to separate .c file For better grouping, in time we may end up making most of these static, i.e. generalizing the 'perf record' synthesizing code so that based on the target it can do the right thing and call the needed synthesizers. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-s9zxxhk40s95pjng9panet16@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
ea49e01c |
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18-Sep-2019 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Move event synthesizing routines to separate header Those are the only routines using the perf_event__handler_t typedef and are all related, so move to a separate header to reduce the header dependency tree, lots of places were getting event.h and even stdio.h, limits.h indirectly, so fix those as well. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-yvx9u1mf7baq6cu1abfhbqgs@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
87ffb6c6 |
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10-Sep-2019 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf env: Remove needless cpumap.h header Only a 'struct perf_cmp_map' forward allocation is necessary, fix the places that need the header but were getting it indirectly, by luck, from env.h. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-3sj3n534zghxhk7ygzeaqlx9@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
4a3cec84 |
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30-Aug-2019 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf dsos: Move the dsos struct and its methods to separate source files So that we can reduce the header dependency tree further, in the process noticed that lots of places were getting even things like build-id routines and 'struct perf_tool' definition indirectly, so fix all those too. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-ti0btma9ow5ndrytyoqdk62j@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
0ac25fd0 |
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29-Aug-2019 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Remove perf.h from source files not needing it With the movement of lots of stuff out of perf.h to other headers we ended up not needing it in lots of places, remove it from those places. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-c718m0sxxwp73lp9d8vpihb4@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
c1a604df |
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29-Aug-2019 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Remove needless perf.h include directive from headers Its not needed there, add it to the places that need it and were getting it via those headers. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-5yulx1u16vyd0zmrbg1tjhju@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
f3711020 |
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29-Aug-2019 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf time-utils: Adopt rdclock() from perf.h Seems to be a better place for this function to live, further shrinking the hodge-podge that perf.h was. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-0zzt1u9rpyjukdy1ccr2u5r9@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
72932371 |
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28-Aug-2019 |
Jiri Olsa <jolsa@kernel.org> |
libperf: Rename the PERF_RECORD_ structs to have a "perf" prefix Even more, to have a "perf_record_" prefix, so that they match the PERF_RECORD_ enum they map to. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190828135717.7245-23-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
c5f416e6 |
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28-Aug-2019 |
Jiri Olsa <jolsa@kernel.org> |
libperf: Add PERF_RECORD_STAT_CONFIG 'struct stat_config_event' to perf/event.h Move the PERF_RECORD_STAT_CONFIG event definition to libperf's event.h. In order to keep libperf simple, we switch 'u64/u32/u16/u8' types used events to their generic '__u*' versions. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190828135717.7245-16-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
aedebdca |
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28-Aug-2019 |
Jiri Olsa <jolsa@kernel.org> |
libperf: Add PERF_RECORD_AUX 'struct aux_event' to perf/event.h Move the PERF_RECORD_AUX event definition to libperf's event.h. In order to keep libperf simple, we switch 'u64/u32/u16/u8' types used events to their generic '__u*' versions. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190828135717.7245-12-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
e9a6882f |
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26-Aug-2019 |
Igor Lubashev <ilubashe@akamai.com> |
perf event: Check ref_reloc_sym before using it Check for ref_reloc_sym before using it instead of checking symbol_conf.kptr_restrict and relying solely on that check. Reported-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Igor Lubashev <ilubashe@akamai.com> Tested-by: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: James Morris <jmorris@namei.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Suzuki Poulouse <suzuki.poulose@arm.com> Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/1566869956-7154-2-git-send-email-ilubashe@akamai.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
3f604b5f |
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26-Aug-2019 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tool: Rename perf_tool::bpf_event to bpf No need for that _event suffix, do just like all the other meta event handlers and suppress that suffix. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Song Liu <songliubraving@fb.com> Link: https://lkml.kernel.org/n/tip-03spzxtqafbabbbmnm7y4xfx@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
6a1b3598 |
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26-Aug-2019 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Rename perf_event::bpf_event to perf_event::bpf Just like all the other meta events, that extra _event suffix is just redundant, ditch it. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Song Liu <songliubraving@fb.com> Link: https://lkml.kernel.org/n/tip-505qwpaizq1k0t6pk13v1ibd@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
ebdba16e |
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26-Aug-2019 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Rename perf_event::ksymbol_event to perf_event::ksymbol Just like all the other meta events, that extra _event suffix is just redundant, ditch it. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Song Liu <songliubraving@fb.com> Link: https://lkml.kernel.org/n/tip-0q8b2xnfs17q0g523oej75s0@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
f15e3c25 |
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25-Aug-2019 |
Jiri Olsa <jolsa@kernel.org> |
libperf: Add PERF_RECORD_KSYMBOL 'struct ksymbol_event' to perf/event.h Move the PERF_RECORD_KSYMBOL event definition into libperf's event.h header include. In order to keep libperf simple, we switch 'u64/u32/u16/u8' types used events to their generic '__u*' versions. Perf added 'u*' types mainly to ease up printing __u64 values as stated in the linux/types.h comment: /* * We define u64 as uint64_t for every architecture * so that we can print it with "%"PRIx64 without getting warnings. * * typedef __u64 u64; * typedef __s64 s64; */ Add and use new PRI_lu64 and PRI_lx64 macros for that. Use extra '_' to ease up the reading and differentiate them from standard PRI*64 macros. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190825181752.722-11-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
5290ed69 |
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25-Aug-2019 |
Jiri Olsa <jolsa@kernel.org> |
libperf: Add PERF_RECORD_LOST 'struct lost_event' to perf/event.h Move the lost_event event definition to libperf's event.h header include. In order to keep libperf simple, we switch 'u64/u32/u16/u8' types used events to their generic '__u*' versions. Perf added 'u*' types mainly to ease up printing __u64 values as stated in the linux/types.h comment: /* * We define u64 as uint64_t for every architecture * so that we can print it with "%"PRIx64 without getting warnings. * * typedef __u64 u64; * typedef __s64 s64; */ Add and use new PRI_lu64 and PRI_lx64 macros for that. Use extra '_' to ease up the reading and differentiate them from standard PRI*64 macros. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190825181752.722-7-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
b66ced19 |
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25-Aug-2019 |
Jiri Olsa <jolsa@kernel.org> |
libperf: Add PERF_RECORD_MMAP2 'struct mmap2_event' to perf/event.h Moving mmap2_event event definition into libperf's event.h header include. In order to keep libperf simple, we switch 'u64/u32/u16/u8' types used events to their generic '__u*' versions. Perf added 'u*' types mainly to ease up printing __u64 values as stated in the linux/types.h comment: /* * We define u64 as uint64_t for every architecture * so that we can print it with "%"PRIx64 without getting warnings. * * typedef __u64 u64; * typedef __s64 s64; */ Adding and using new PRI_lu64 and PRI_lx64 macros to be used for that. Using extra '_' to ease up the reading and differentiate them from standard PRI*64 macros. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lkml.kernel.org/n/tip-ufs9ityr5w2xqwtd5w3p6dm4@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
1345e2ee |
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25-Aug-2019 |
Jiri Olsa <jolsa@kernel.org> |
libperf: Add PERF_RECORD_MMAP 'struct mmap_event' to perf/event.h Move the mmap_event event definition to libperf's event.h header include. In order to keep libperf simple, we switch 'u64/u32/u16/u8' types used events to their generic '__u*' versions. Perf added 'u*' types mainly to ease up printing __u64 values as stated in the linux/types.h comment: /* * We define u64 as uint64_t for every architecture * so that we can print it with "%"PRIx64 without getting warnings. * * typedef __u64 u64; * typedef __s64 s64; */ Add and use new PRI_lu64 and PRI_lx64 macros for that. Use extra '_' to ease up reading and differentiate them from standard PRI*64 macros. Committer notes: Fixup the PRI_l[ux]64 macros on 32-bit arches, conditionally defining it with that extra 'l' modifier only on arches where __u64 is long long, leaving it aside on 32-bit arches. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190825181752.722-2-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
a2f354e3 |
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22-Aug-2019 |
Jiri Olsa <jolsa@kernel.org> |
libperf: Add perf_thread_map__nr/perf_thread_map__pid functions So it's part of libperf library as basic functions operating on perf_thread_map objects. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190822111141.25823-6-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
315c0a1f |
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22-Aug-2019 |
Jiri Olsa <jolsa@kernel.org> |
libperf: Move perf's cpu_map__empty() to perf_cpu_map__empty() So it's part of the libperf library as one of basic functions operating on the perf_cpu_map class. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190822111141.25823-4-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
7836e52e |
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21-Jul-2019 |
Jiri Olsa <jolsa@kernel.org> |
libperf: Add perf_thread_map__get()/perf_thread_map__put() Move the following functions: thread_map__get() thread_map__put() thread_map__comm() to libperf with the following names: perf_thread_map__get() perf_thread_map__put() perf_thread_map__comm() Add the perf_thread_map__comm() function for it to work/compile. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190721112506.12306-34-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
38f01d8d |
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21-Jul-2019 |
Jiri Olsa <jolsa@kernel.org> |
libperf: Add perf_cpu_map__get()/perf_cpu_map__put() Moving the following functions: cpu_map__get() cpu_map__put() to libperf with following names: perf_cpu_map__get() perf_cpu_map__put() Committer notes: Added fixes for arm/arm64 Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190721112506.12306-31-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
9749b90e |
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21-Jul-2019 |
Jiri Olsa <jolsa@kernel.org> |
perf tools: Rename struct thread_map to struct perf_thread_map Rename struct thread_map to struct perf_thread_map, so it could be part of libperf. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190721112506.12306-4-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
f854839b |
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21-Jul-2019 |
Jiri Olsa <jolsa@kernel.org> |
perf cpu_map: Rename struct cpu_map to struct perf_cpu_map Rename struct cpu_map to struct perf_cpu_map, so it could be part of libperf. Committer notes: Added fixes for arm64, provided by Jiri. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20190721112506.12306-3-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
d8f9da24 |
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03-Jul-2019 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Use zfree() where applicable In places where the equivalent was already being done, i.e.: free(a); a = NULL; And in placs where struct members are being freed so that if we have some erroneous reference to its struct, then accesses to freed members will result in segfaults, which we can detect faster than use after free to areas that may still have something seemingly valid. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-jatyoofo5boc1bsvoig6bb6i@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
7f7c536f |
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04-Jul-2019 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
tools lib: Adopt zalloc()/zfree() from tools/perf Eroding a bit more the tools/perf/util/util.h hodpodge header. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-natazosyn9rwjka25tvcnyi0@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
32858480 |
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26-Jun-2019 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Ditch rtrim(), use skip_spaces() to get closer to the kernel No change in behaviour, just using the same kernel idiom for such operation. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: André Goddard Rosa <andre.goddard@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-a85lkptkt0ru40irpga8yf54@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
3052ba56 |
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25-Jun-2019 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
tools perf: Move from sane_ctype.h obtained from git to the Linux's original We got the sane_ctype.h headers from git and kept using it so far, but since that code originally came from the kernel sources to the git sources, perhaps its better to just use the one in the kernel, so that we can leverage tools/perf/check_headers.sh to be notified when our copy gets out of sync, i.e. when fixes or goodies are added to the code we've copied. This will help with things like tools/lib/string.c where we want to have more things in common with the kernel, such as strim(), skip_spaces(), etc so as to go on removing the things that we have in tools/perf/util/ and instead using the code in the kernel, indirectly and removing things like EXPORT_SYMBOL(), etc, getting notified when fixes and improvements are made to the original code. Hopefully this also should help with reducing the difference of code hosted in tools/ to the one in the kernel proper. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-7k9868l713wqtgo01xxygn12@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
8201787c |
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08-May-2019 |
Jiri Olsa <jolsa@kernel.org> |
perf script: Remove superfluous BPF event titles There's no need to display "ksymbol event with" text for the PERF_RECORD_KSYMBOL event and "bpf event with" test for the PERF_RECORD_BPF_EVENT event. Remove it so it also goes along with other side-band events display. Before: # perf script --show-bpf-events ... swapper 0 [000] 0.000000: PERF_RECORD_KSYMBOL ksymbol event with addr ffffffffc0ef971d len 229 type 1 flags 0x0 name bpf_prog_2a142ef67aaad174 swapper 0 [000] 0.000000: PERF_RECORD_BPF_EVENT bpf event with type 1, flags 0, id 36 After: # perf script --show-bpf-events ... swapper 0 [000] 0.000000: PERF_RECORD_KSYMBOL addr ffffffffc0ef971d len 229 type 1 flags 0x0 name bpf_prog_2a142ef67aaad174 swapper 0 [000] 0.000000: PERF_RECORD_BPF_EVENT type 1, flags 0, id 36 Signed-off-by: Jiri Olsa <jolsa@kernel.org> Acked-by: Song Liu <songliubraving@fb.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stanislav Fomichev <sdf@google.com> Link: http://lkml.kernel.org/r/20190508132010.14512-12-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
42e1fd80 |
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18-Mar-2019 |
Alexey Budankov <alexey.budankov@linux.intel.com> |
perf record: Implement COMPRESSED event record and its attributes Implemented PERF_RECORD_COMPRESSED event, related data types, header feature and functions to write, read and print feature attributes from the trace header section. comp_mmap_len preserves the size of mmaped kernel buffer that was used during collection. comp_mmap_len size is used on loading stage as the size of decomp buffer for decompression of COMPRESSED events content. Committer notes: Fixed up conflict with BPF_PROG_INFO and BTF_BTF header features. Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com> Reviewed-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/ebbaf031-8dda-3864-ebc6-7922d43ee515@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
daecf9e0 |
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27-Jan-2019 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Add missing include for symbols.h Several places were using definitions found in symbols.h but not including it, getting it by sheer luck from some other headers that now are in the process of removing that include because they don't need it or because simply having struct forward declarations is enough, fix it. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-xbcvvx296d70kpg9wb0qmeq9@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
1101f69a |
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27-Jan-2019 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
pref tools: Add missing map.h includes Lots of places get the map.h file indirectly, and since we're going to remove it from machine.h, then those need to include it directly, do it now, before we remove that dep. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-ob8jehdjda8h5jsrv9dqj9tf@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
45178a92 |
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17-Jan-2019 |
Song Liu <songliubraving@fb.com> |
perf tools: Handle PERF_RECORD_BPF_EVENT This patch adds basic handling of PERF_RECORD_BPF_EVENT. Tracking of PERF_RECORD_BPF_EVENT is OFF by default. Option --bpf-event is added to turn it on. Committer notes: Add dummy machine__process_bpf_event() variant that returns zero for systems without HAVE_LIBBPF_SUPPORT, such as Alpine Linux, unbreaking the build in such systems. Remove the needless include <machine.h> from bpf->event.h, provide just forward declarations for the structs and unions in the parameters, to reduce compilation time and needless rebuilds when machine.h gets changed. Committer testing: When running with: # perf record --bpf-event On an older kernel where PERF_RECORD_BPF_EVENT and PERF_RECORD_KSYMBOL is not present, we fallback to removing those two bits from perf_event_attr, making the tool to continue to work on older kernels: perf_event_attr: size 112 { sample_period, sample_freq } 4000 sample_type IP|TID|TIME|PERIOD read_format ID disabled 1 inherit 1 mmap 1 comm 1 freq 1 enable_on_exec 1 task 1 precise_ip 3 sample_id_all 1 exclude_guest 1 mmap2 1 comm_exec 1 ksymbol 1 bpf_event 1 ------------------------------------------------------------ sys_perf_event_open: pid 5779 cpu 0 group_fd -1 flags 0x8 sys_perf_event_open failed, error -22 switching off bpf_event ------------------------------------------------------------ perf_event_attr: size 112 { sample_period, sample_freq } 4000 sample_type IP|TID|TIME|PERIOD read_format ID disabled 1 inherit 1 mmap 1 comm 1 freq 1 enable_on_exec 1 task 1 precise_ip 3 sample_id_all 1 exclude_guest 1 mmap2 1 comm_exec 1 ksymbol 1 ------------------------------------------------------------ sys_perf_event_open: pid 5779 cpu 0 group_fd -1 flags 0x8 sys_perf_event_open failed, error -22 switching off ksymbol ------------------------------------------------------------ perf_event_attr: size 112 { sample_period, sample_freq } 4000 sample_type IP|TID|TIME|PERIOD read_format ID disabled 1 inherit 1 mmap 1 comm 1 freq 1 enable_on_exec 1 task 1 precise_ip 3 sample_id_all 1 exclude_guest 1 mmap2 1 comm_exec 1 ------------------------------------------------------------ And then proceeds to work without those two features. As passing --bpf-event is an explicit action performed by the user, perhaps we should emit a warning telling that the kernel has no such feature, but this can be done on top of this patch. Now with a kernel that supports these events, start the 'record --bpf-event -a' and then run 'perf trace sleep 10000' that will use the BPF augmented_raw_syscalls.o prebuilt (for another kernel version even) and thus should generate PERF_RECORD_BPF_EVENT events: [root@quaco ~]# perf record -e dummy -a --bpf-event ^C[ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.713 MB perf.data ] [root@quaco ~]# bpftool prog 13: cgroup_skb tag 7be49e3934a125ba gpl loaded_at 2019-01-19T09:09:43-0300 uid 0 xlated 296B jited 229B memlock 4096B map_ids 13,14 14: cgroup_skb tag 2a142ef67aaad174 gpl loaded_at 2019-01-19T09:09:43-0300 uid 0 xlated 296B jited 229B memlock 4096B map_ids 13,14 15: cgroup_skb tag 7be49e3934a125ba gpl loaded_at 2019-01-19T09:09:43-0300 uid 0 xlated 296B jited 229B memlock 4096B map_ids 15,16 16: cgroup_skb tag 2a142ef67aaad174 gpl loaded_at 2019-01-19T09:09:43-0300 uid 0 xlated 296B jited 229B memlock 4096B map_ids 15,16 17: cgroup_skb tag 7be49e3934a125ba gpl loaded_at 2019-01-19T09:09:44-0300 uid 0 xlated 296B jited 229B memlock 4096B map_ids 17,18 18: cgroup_skb tag 2a142ef67aaad174 gpl loaded_at 2019-01-19T09:09:44-0300 uid 0 xlated 296B jited 229B memlock 4096B map_ids 17,18 21: cgroup_skb tag 7be49e3934a125ba gpl loaded_at 2019-01-19T09:09:45-0300 uid 0 xlated 296B jited 229B memlock 4096B map_ids 21,22 22: cgroup_skb tag 2a142ef67aaad174 gpl loaded_at 2019-01-19T09:09:45-0300 uid 0 xlated 296B jited 229B memlock 4096B map_ids 21,22 31: tracepoint name sys_enter tag 12504ba9402f952f gpl loaded_at 2019-01-19T09:19:56-0300 uid 0 xlated 512B jited 374B memlock 4096B map_ids 30,29,28 32: tracepoint name sys_exit tag c1bd85c092d6e4aa gpl loaded_at 2019-01-19T09:19:56-0300 uid 0 xlated 256B jited 191B memlock 4096B map_ids 30,29 # perf report -D | grep PERF_RECORD_BPF_EVENT | nl 1 0 55834574849 0x4fc8 [0x18]: PERF_RECORD_BPF_EVENT bpf event with type 1, flags 0, id 13 2 0 60129542145 0x5118 [0x18]: PERF_RECORD_BPF_EVENT bpf event with type 1, flags 0, id 14 3 0 64424509441 0x5268 [0x18]: PERF_RECORD_BPF_EVENT bpf event with type 1, flags 0, id 15 4 0 68719476737 0x53b8 [0x18]: PERF_RECORD_BPF_EVENT bpf event with type 1, flags 0, id 16 5 0 73014444033 0x5508 [0x18]: PERF_RECORD_BPF_EVENT bpf event with type 1, flags 0, id 17 6 0 77309411329 0x5658 [0x18]: PERF_RECORD_BPF_EVENT bpf event with type 1, flags 0, id 18 7 0 90194313217 0x57a8 [0x18]: PERF_RECORD_BPF_EVENT bpf event with type 1, flags 0, id 21 8 0 94489280513 0x58f8 [0x18]: PERF_RECORD_BPF_EVENT bpf event with type 1, flags 0, id 22 9 7 620922484360 0xb6390 [0x30]: PERF_RECORD_BPF_EVENT bpf event with type 1, flags 0, id 29 10 7 620922486018 0xb6410 [0x30]: PERF_RECORD_BPF_EVENT bpf event with type 2, flags 0, id 29 11 7 620922579199 0xb6490 [0x30]: PERF_RECORD_BPF_EVENT bpf event with type 1, flags 0, id 30 12 7 620922580240 0xb6510 [0x30]: PERF_RECORD_BPF_EVENT bpf event with type 2, flags 0, id 30 13 7 620922765207 0xb6598 [0x30]: PERF_RECORD_BPF_EVENT bpf event with type 1, flags 0, id 31 14 7 620922874543 0xb6620 [0x30]: PERF_RECORD_BPF_EVENT bpf event with type 1, flags 0, id 32 # There, the 31 and 32 tracepoint BPF programs put in place by 'perf trace'. Signed-off-by: Song Liu <songliubraving@fb.com> Reviewed-by: Arnaldo Carvalho de Melo <acme@redhat.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: Peter Zijlstra <peterz@infradead.org> Cc: kernel-team@fb.com Cc: netdev@vger.kernel.org Link: http://lkml.kernel.org/r/20190117161521.1341602-7-songliubraving@fb.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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9aa0bfa3 |
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17-Jan-2019 |
Song Liu <songliubraving@fb.com> |
perf tools: Handle PERF_RECORD_KSYMBOL This patch handles PERF_RECORD_KSYMBOL in perf record/report. Specifically, map and symbol are created for ksymbol register, and removed for ksymbol unregister. This patch also sets perf_event_attr.ksymbol properly. The flag is ON by default. Committer notes: Use proper inttypes.h for u64, fixing the build in some environments like in the android NDK r15c targetting ARM 32-bit. I.e. fixing this build error: util/event.c: In function 'perf_event__fprintf_ksymbol': util/event.c:1489:10: error: format '%lx' expects argument of type 'long unsigned int', but argument 3 has type 'u64' [-Werror=format=] event->ksymbol_event.flags, event->ksymbol_event.name); ^ cc1: all warnings being treated as errors Signed-off-by: Song Liu <songliubraving@fb.com> Reviewed-by: Arnaldo Carvalho de Melo <acme@redhat.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: Peter Zijlstra <peterz@infradead.org> Cc: kernel-team@fb.com Cc: netdev@vger.kernel.org Link: http://lkml.kernel.org/r/20190117161521.1341602-6-songliubraving@fb.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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3fcb10e4 |
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04-Dec-2018 |
Mark Drayton <mbd@fb.com> |
perf tools: Allow specifying proc-map-timeout in config file The default timeout of 500ms for parsing /proc/<pid>/maps files is too short for profiling many of our services. This can be overridden by passing --proc-map-timeout to the relevant command but it'd be nice to globally increase our default value. This patch permits setting a different default with the core.proc-map-timeout config file parameter. Signed-off-by: Mark Drayton <mbd@fb.com> Acked-by: Song Liu <songliubraving@fb.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20181204203420.1683114-1-mbd@fb.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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225f99e0 |
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06-Nov-2018 |
Adrian Hunter <adrian.hunter@intel.com> |
perf tools: Use fallback for sample_addr_correlates_sym() cases thread__resolve() is used in the sample_addr_correlates_sym() cases where 'addr' is a destination of a branch which does not necessarily have the same cpumode as the 'ip'. Use the fallback function in that case. This patch depends on patch "perf tools: Add fallback functions for cases where cpumode is insufficient". Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: David S. Miller <davem@davemloft.net> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: stable@vger.kernel.org # 4.19 Link: http://lkml.kernel.org/r/20181106210712.12098-3-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
8e80ad99 |
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06-Nov-2018 |
Adrian Hunter <adrian.hunter@intel.com> |
perf thread: Add fallback functions for cases where cpumode is insufficient For branch stacks or branch samples, the sample cpumode might not be correct because it applies only to the sample 'ip' and not necessary to 'addr' or branch stack addresses. Add fallback functions that can be used to deal with those cases Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: David S. Miller <davem@davemloft.net> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: stable@vger.kernel.org # 4.19 Link: http://lkml.kernel.org/r/20181106210712.12098-2-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
4f8f382e |
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30-Oct-2018 |
David Miller <davem@davemloft.net> |
perf tools: Don't clone maps from parent when synthesizing forks When synthesizing FORK events, we are trying to create thread objects for the already running tasks on the machine. Normally, for a kernel FORK event, we want to clone the parent's maps because that is what the kernel just did. But when synthesizing, this should not be done. If we do, we end up with overlapping maps as we process the sythesized MMAP2 events that get delivered shortly thereafter. Use the FORK event misc flags in an internal way to signal this situation, so we can elide the map clone when appropriate. Signed-off-by: David S. Miller <davem@davemloft.net> Cc: Don Zickus <dzickus@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Joe Mario <jmario@redhat.com> Link: http://lkml.kernel.org/r/20181030.222404.2085088822877051075.davem@davemloft.net [ Added comment about flag use in machine__process_fork_event(), use ternary op in thread__clone_map_groups() as suggested by Jiri ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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27faeebd |
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18-Oct-2018 |
David S. Miller <davem@davemloft.net> |
sparc: Revert unintended perf changes. Some local debugging hacks accidently slipped into the VDSO commit. Sorry! Signed-off-by: David S. Miller <davem@davemloft.net>
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776ca154 |
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17-Oct-2018 |
David S. Miller <davem@davemloft.net> |
sparc: Fix syscall fallback bugs in VDSO. First, the trap number for 32-bit syscalls is 0x10. Also, only negate the return value when syscall error is indicated by the carry bit being set. Signed-off-by: David S. Miller <davem@davemloft.net>
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edeb0c90 |
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16-Oct-2018 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Stop fallbacking to kallsyms for vdso symbols lookup David reports that: <quote> Perf has this hack where it uses the kernel symbol map as a backup when a symbol can't be found in the user's symbol table(s). This causes problems because the tests driving this code path use machine__kernel_ip(), and that is completely meaningless on Sparc. On sparc64 the kernel and user live in physically separate virtual address spaces, rather than a shared one. And the kernel lives at a virtual address that overlaps common userspace addresses. So this test passes almost all the time when a user symbol lookup fails. The consequence of this is that, if the unfound user virtual address in the sample doesn't match up to a kernel symbol either, we trigger things like this code in builtin-top.c: if (al.sym == NULL && al.map != NULL) { const char *msg = "Kernel samples will not be resolved.\n"; /* * As we do lazy loading of symtabs we only will know if the * specified vmlinux file is invalid when we actually have a * hit in kernel space and then try to load it. So if we get * here and there are _no_ symbols in the DSO backing the * kernel map, bail out. * * We may never get here, for instance, if we use -K/ * --hide-kernel-symbols, even if the user specifies an * invalid --vmlinux ;-) */ if (!machine->kptr_restrict_warned && !top->vmlinux_warned && __map__is_kernel(al.map) && map__has_symbols(al.map)) { if (symbol_conf.vmlinux_name) { char serr[256]; dso__strerror_load(al.map->dso, serr, sizeof(serr)); ui__warning("The %s file can't be used: %s\n%s", symbol_conf.vmlinux_name, serr, msg); } else { ui__warning("A vmlinux file was not found.\n%s", msg); } if (use_browser <= 0) sleep(5); top->vmlinux_warned = true; } } When I fire up a compilation on sparc, this triggers immediately. I'm trying to figure out what the "backup to kernel map" code is accomplishing. I see some language in the current code and in the changes that have happened in this area talking about vdso. Does that really happen? The vdso is mapped into userspace virtual addresses, not kernel ones. More history. This didn't cause problems on sparc some time ago, because the kernel IP check used to be "ip < 0" :-) Sparc kernel addresses are not negative. But now with machine__kernel_ip(), which works using the symbol table determined kernel address range, it does trigger. What it all boils down to is that on architectures like sparc, machine__kernel_ip() should always return false in this scenerio, and therefore this kind of logic: if (cpumode == PERF_RECORD_MISC_USER && machine && mg != &machine->kmaps && machine__kernel_ip(machine, al->addr)) { is basically invalid. PERF_RECORD_MISC_USER implies no kernel address can possibly match for the sample/event in question (no matter how hard you try!) :-) </> So, I thought something had changed and in the past we would somehow find that address in the kallsyms, but I couldn't find anything to back that up, the patch introducing this is over a decade old, lots of things changed, so I was just thinking I was missing something. I tried a gtod busy loop to generate vdso activity and added a 'perf probe' at that branch, on x86_64 to see if it ever gets hit: Made thread__find_map() noinline, as 'perf probe' in lines of inline functions seems to not be working, only at function start. (Masami?) # perf probe -x ~/bin/perf -L thread__find_map:57 <thread__find_map@/home/acme/git/perf/tools/perf/util/event.c:57> 57 if (cpumode == PERF_RECORD_MISC_USER && machine && 58 mg != &machine->kmaps && 59 machine__kernel_ip(machine, al->addr)) { 60 mg = &machine->kmaps; 61 load_map = true; 62 goto try_again; } } else { /* * Kernel maps might be changed when loading * symbols so loading * must be done prior to using kernel maps. */ 69 if (load_map) 70 map__load(al->map); 71 al->addr = al->map->map_ip(al->map, al->addr); # perf probe -x ~/bin/perf thread__find_map:60 Added new event: probe_perf:thread__find_map (on thread__find_map:60 in /home/acme/bin/perf) You can now use it in all perf tools, such as: perf record -e probe_perf:thread__find_map -aR sleep 1 # Then used this to see if, system wide, those probe points were being hit: # perf trace -e *perf:thread*/max-stack=8/ ^C[root@jouet ~]# No hits when running 'perf top' and: # cat gtod.c #include <sys/time.h> int main(void) { struct timeval tv; while (1) gettimeofday(&tv, 0); return 0; } [root@jouet c]# ./gtod ^C Pressed 'P' in 'perf top' and the [vdso] samples are there: 62.84% [vdso] [.] __vdso_gettimeofday 8.13% gtod [.] main 7.51% [vdso] [.] 0x0000000000000914 5.78% [vdso] [.] 0x0000000000000917 5.43% gtod [.] _init 2.71% [vdso] [.] 0x000000000000092d 0.35% [kernel] [k] native_io_delay 0.33% libc-2.26.so [.] __memmove_avx_unaligned_erms 0.20% [vdso] [.] 0x000000000000091d 0.17% [i2c_i801] [k] i801_access 0.06% firefox [.] free 0.06% libglib-2.0.so.0.5400.3 [.] g_source_iter_next 0.05% [vdso] [.] 0x0000000000000919 0.05% libpthread-2.26.so [.] __pthread_mutex_lock 0.05% libpixman-1.so.0.34.0 [.] 0x000000000006d3a7 0.04% [kernel] [k] entry_SYSCALL_64_trampoline 0.04% libxul.so [.] style::dom_apis::query_selector_slow 0.04% [kernel] [k] module_get_kallsym 0.04% firefox [.] malloc 0.04% [vdso] [.] 0x0000000000000910 I added a 'perf probe' to thread__find_map:69, and that surely got tons of hits, i.e. for every map found, just to make sure the 'perf probe' command was really working. In the process I noticed a bug, we're only have records for '[vdso]' for pre-existing commands, i.e. ones that are running when we start 'perf top', when we will generate the PERF_RECORD_MMAP by looking at /perf/PID/maps. I.e. like this, for preexisting processes with a vdso map, again, tracing for all the system, only pre-existing processes get a [vdso] map (when having one): [root@jouet ~]# perf probe -x ~/bin/perf __machine__addnew_vdso Added new event: probe_perf:__machine__addnew_vdso (on __machine__addnew_vdso in /home/acme/bin/perf) You can now use it in all perf tools, such as: perf record -e probe_perf:__machine__addnew_vdso -aR sleep 1 [root@jouet ~]# perf trace -e probe_perf:__machine__addnew_vdso/max-stack=8/ 0.000 probe_perf:__machine__addnew_vdso:(568eb3) __machine__addnew_vdso (/home/acme/bin/perf) map__new (/home/acme/bin/perf) machine__process_mmap2_event (/home/acme/bin/perf) machine__process_event (/home/acme/bin/perf) perf_event__process (/home/acme/bin/perf) perf_tool__process_synth_event (/home/acme/bin/perf) perf_event__synthesize_mmap_events (/home/acme/bin/perf) __event__synthesize_thread (/home/acme/bin/perf) The kernel is generating a PERF_RECORD_MMAP for vDSOs, but somehow 'perf top' is not getting those records while 'perf record' is: # perf record ~acme/c/gtod ^C[ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.076 MB perf.data (1499 samples) ] # perf report -D | grep PERF_RECORD_MMAP2 71293612401913 0x11b48 [0x70]: PERF_RECORD_MMAP2 25484/25484: [0x400000(0x1000) @ 0 fd:02 1137 541179306]: r-xp /home/acme/c/gtod 71293612419012 0x11be0 [0x70]: PERF_RECORD_MMAP2 25484/25484: [0x7fa4a2783000(0x227000) @ 0 fd:00 3146370 854107250]: r-xp /usr/lib64/ld-2.26.so 71293612432110 0x11c50 [0x60]: PERF_RECORD_MMAP2 25484/25484: [0x7ffcdb53a000(0x2000) @ 0 00:00 0 0]: r-xp [vdso] 71293612509944 0x11cb0 [0x70]: PERF_RECORD_MMAP2 25484/25484: [0x7fa4a23cd000(0x3b6000) @ 0 fd:00 3149723 262067164]: r-xp /usr/lib64/libc-2.26.so # # perf script | grep vdso | head gtod 25484 71293.612768: 2485554 cycles:ppp: 7ffcdb53a914 [unknown] ([vdso]) gtod 25484 71293.613576: 2149343 cycles:ppp: 7ffcdb53a917 [unknown] ([vdso]) gtod 25484 71293.614274: 1814652 cycles:ppp: 7ffcdb53aca8 __vdso_gettimeofday+0x98 ([vdso]) gtod 25484 71293.614862: 1669070 cycles:ppp: 7ffcdb53acc5 __vdso_gettimeofday+0xb5 ([vdso]) gtod 25484 71293.615404: 1451589 cycles:ppp: 7ffcdb53acc5 __vdso_gettimeofday+0xb5 ([vdso]) gtod 25484 71293.615999: 1269941 cycles:ppp: 7ffcdb53ace6 __vdso_gettimeofday+0xd6 ([vdso]) gtod 25484 71293.616405: 1177946 cycles:ppp: 7ffcdb53a914 [unknown] ([vdso]) gtod 25484 71293.616775: 1121290 cycles:ppp: 7ffcdb53ac47 __vdso_gettimeofday+0x37 ([vdso]) gtod 25484 71293.617150: 1037721 cycles:ppp: 7ffcdb53ace6 __vdso_gettimeofday+0xd6 ([vdso]) gtod 25484 71293.617478: 994526 cycles:ppp: 7ffcdb53ace6 __vdso_gettimeofday+0xd6 ([vdso]) # The patch is the obvious one and with it we also continue to resolve vdso symbols for pre-existing processes in 'perf top' and for all processes in 'perf record' + 'perf report/script'. Suggested-by: David Miller <davem@davemloft.net> Acked-by: David Miller <davem@davemloft.net> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-cs7skq9pp0kjypiju6o7trse@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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0ed149cf |
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11-Oct-2018 |
David Miller <davem@davemloft.net> |
perf cpu_map: Align cpu map synthesized events properly. The size of the resulting cpu map can be smaller than a multiple of sizeof(u64), resulting in SIGBUS on cpus like Sparc as the next event will not be aligned properly. Signed-off-by: David S. Miller <davem@davemloft.net> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@intel.com> Fixes: 6c872901af07 ("perf cpu_map: Add cpu_map event synthesize function") Link: http://lkml.kernel.org/r/20181011.224655.716771175766946817.davem@davemloft.net Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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e5adfc3e |
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06-Aug-2018 |
Konstantin Khlebnikov <koct9i@gmail.com> |
perf map: Synthesize maps only for thread group leader Threads share map_groups, all map events are merged into it. Thus we could send mmaps only for thread group leader. Otherwise it took ages to attach and record something from processes with many vmas and threads. Thread group leader could be already dead, but it seems perf cannot handle this case anyway. Testing dummy: #include <stdio.h> #include <stdlib.h> #include <sys/mman.h> #include <pthread.h> #include <unistd.h> void *thread(void *arg) { pause(); } int main(int argc, char **argv) { int threads = 10000; int vmas = 50000; pthread_t th; for (int i = 0; i < threads; i++) pthread_create(&th, NULL, thread, NULL); for (int i = 0; i < vmas; i++) mmap(NULL, 4096, (i & 1) ? PROT_READ : PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS | MAP_NORESERVE, -1, 0); sleep(60); return 0; } Comment by Jiri Olsa: We actualy synthesize the group leader (if we found one) for the thread even if it's not present in the thread_map, so the process maps are always in data. Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/153363294102.396323.6277944760215058174.stgit@buzz Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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a8ce99b0 |
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22-May-2018 |
Adrian Hunter <adrian.hunter@intel.com> |
perf machine: Synthesize and process mmap events for x86 PTI entry trampolines Like the kernel text, the location of x86 PTI entry trampolines must be recorded in the perf.data file. Like the kernel, synthesize a mmap event for that, and add processing for it. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: x86@kernel.org Link: http://lkml.kernel.org/r/1526986485-6562-10-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
5759a682 |
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22-May-2018 |
Adrian Hunter <adrian.hunter@intel.com> |
perf machine: Allow for extra kernel maps Identify extra kernel maps by name so that they can be distinguished from the kernel map and module maps. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: x86@kernel.org Link: http://lkml.kernel.org/r/1526986485-6562-8-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
3183f8ca |
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26-Apr-2018 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf symbols: Unify symbol maps Remove the split of symbol tables for data (MAP__VARIABLE) and for functions (MAP__FUNCTION), its unneeded and there were various places doing two lookups to find a symbol, so simplify this. We still will consider only the symbols that matched the filters in place, i.e. see the (elf_(sec,sym)|symbol_type)__filter() routines in the patch, just so that we consider only the same symbols as before, to reduce the possibility of regressions. All the tests on 50-something build environments, in varios versions of lots of distros and cross build environments were performed without build regressions, as usual with all pull requests the other tests were also performed: 'perf test' and 'make -C tools/perf build-test'. Also this was done at a great granularity so that regressions can be bisected more easily. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-hiq0fy2rsleupnqqwuojo1ne@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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404eb5a4 |
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26-Apr-2018 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf thread: Make thread__find_map() search all maps We still have the split internally, but users don't see it anymore, simplifying the growing number of cases where we end up searching in the MAP__VARIABLE maps. This further paves the way for ditching the split. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-86mfxrztf310konutxvhr5ua@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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117d3c24 |
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25-Apr-2018 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf thread: Ditch __thread__find_symbol() Simulate having all symbols in just one tree by searching the still existing two trees. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-uss70e8tvzzbzs326330t83q@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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e85e0e0c |
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25-Apr-2018 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Use kallsyms__is_function() Replacing equivalent, the equivalent and longer variation: symbol__is_a(type, MAP__FUNCTION); Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-9t3dqogher54owfl9o2mir52@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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abe5449d |
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24-Apr-2018 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf map: Shorten map_groups__find() signature Removing the map_type, that is going away. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-18iiiw25r75xn7zlppjldk48@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
68a74186 |
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24-Apr-2018 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf machine: Introduce machine__kernel_maps() That returns the a data structure contained the ordered list of kernel modules + the main kernel maps, one more step in removing the MAP__{FUNCTION,VARIABLE} split. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-qsgbxfyaohc80c9ma049dubm@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
d9a5f274 |
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23-Apr-2018 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf thread: Make thread__find_symbol() return the symbol searched Instead of just returning it in al.sym, allowing for some simplification in its users, and to make it consistent with thread__find_map(). Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-4axi2sigslffdixzxbehvgoj@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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71a84b5a |
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24-Apr-2018 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf thread: Make thread__find_map() return the map It was returning the searched map just on the addr_location passed, with the function itself returning void. Make it return the map so that we can make the code more compact. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-tzlrrzdeoof4i6ktyqv1t6ks@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
4546263d |
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24-Apr-2018 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf thread: Introduce thread__find_symbol() Out of thread__find_addr_location(..., MAP__FUNCTION, ...), idea here is to continue removing references to MAP__{FUNCTION,VARIABLE} ahead of getting both types of symbols in the same rbtree, as various places do two lookups, looking first at MAP__FUNCTION, then at MAP__VARIABLE. So thread__find_symbol() will eventually do just that, and 'struct symbol' will have the symbol type, for code that cares about that. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-n7528en9e08yd3flzmb26tth@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
f07a2d32 |
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24-Apr-2018 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf thread: Introduce thread__find_map() Out of thread__find_add_map(..., MAP__FUNCTION, ...), idea here is to continue removing references to MAP__{FUNCTION,VARIABLE} ahead of getting both types of symbols in the same rbtree, as various places do two lookups, looking first at MAP__FUNCTION, then at MAP__VARIABLE. So thread__find_map() will eventually do just that, and 'struct symbol' will have the symbol type, for code that cares about that. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-q27xee34l4izpfau49w103s6@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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b3f35b5d |
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09-Apr-2018 |
Alexey Budankov <alexey.budankov@linux.intel.com> |
perf report: Extend raw dump (-D) out with switch out event type Print additional 'preempt' tag for PERF_RECORD_SWITCH[_CPU_WIDE] OUT records when event header misc field contains PERF_RECORD_MISC_SWITCH_OUT_PREEMPT bit set designating preemption context switch out event: tools/perf/perf report -D -i perf.data | grep _SWITCH 0 768361415226 0x27f076 [0x28]: PERF_RECORD_SWITCH_CPU_WIDE IN prev pid/tid: 8/8 4 768362216813 0x28f45e [0x28]: PERF_RECORD_SWITCH_CPU_WIDE OUT next pid/tid: 0/0 4 768362217824 0x28f486 [0x28]: PERF_RECORD_SWITCH_CPU_WIDE IN prev pid/tid: 4073/4073 0 768362414027 0x27f0ce [0x28]: PERF_RECORD_SWITCH_CPU_WIDE OUT preempt next pid/tid: 8/8 0 768362414367 0x27f0f6 [0x28]: PERF_RECORD_SWITCH_CPU_WIDE IN prev pid/tid: 0/0 Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/6f5aebb9-b96c-f304-f08f-8f046d38de4f@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
a73e24d2 |
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15-Feb-2018 |
Jiri Olsa <jolsa@kernel.org> |
perf tools: Do not create kernel maps in sample__resolve() There's no need for kernel maps to be allocated at this point - sample processing. We search for kernel maps using the kernel map_groups in machine::kmaps which is static. If vmlinux maps for any reason still don't exist, the search correctly fails because they are not in the map group. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20180215122635.24029-9-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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8c7f1bb3 |
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15-Feb-2018 |
Jiri Olsa <jolsa@kernel.org> |
perf machine: Move kernel mmap name into struct machine It simplifies and centralizes the code. The kernel mmap name is set for machine type, which we know from the beginning, so there's no reason to generate it every time we need it. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20180215122635.24029-5-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
3d7c27b6 |
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07-Jan-2018 |
Jiri Olsa <jolsa@kernel.org> |
perf script: Add support to display lost events Adding option to display lost events: $ perf script --show-lost-events ... mplayer 13810 [002] 468011.402396: 100 cycles:ppp: ff.. mplayer 13810 [002] 468011.402396: PERF_RECORD_LOST lost 3880 mplayer 13810 [002] 468011.402397: 100 cycles:ppp: ff.. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20180107160356.28203-10-jolsa@kernel.org [ Use PRIu64 when printing u64 values, fixing the build in some arches ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
b2441318 |
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01-Nov-2017 |
Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
License cleanup: add SPDX GPL-2.0 license identifier to files with no license Many source files in the tree are missing licensing information, which makes it harder for compliance tools to determine the correct license. By default all files without license information are under the default license of the kernel, which is GPL version 2. Update the files which contain no license information with the 'GPL-2.0' SPDX license identifier. The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. This patch is based on work done by Thomas Gleixner and Kate Stewart and Philippe Ombredanne. How this work was done: Patches were generated and checked against linux-4.14-rc6 for a subset of the use cases: - file had no licensing information it it. - file was a */uapi/* one with no licensing information in it, - file was a */uapi/* one with existing licensing information, Further patches will be generated in subsequent months to fix up cases where non-standard license headers were used, and references to license had to be inferred by heuristics based on keywords. The analysis to determine which SPDX License Identifier to be applied to a file was done in a spreadsheet of side by side results from of the output of two independent scanners (ScanCode & Windriver) producing SPDX tag:value files created by Philippe Ombredanne. Philippe prepared the base worksheet, and did an initial spot review of a few 1000 files. The 4.13 kernel was the starting point of the analysis with 60,537 files assessed. Kate Stewart did a file by file comparison of the scanner results in the spreadsheet to determine which SPDX license identifier(s) to be applied to the file. She confirmed any determination that was not immediately clear with lawyers working with the Linux Foundation. Criteria used to select files for SPDX license identifier tagging was: - Files considered eligible had to be source code files. - Make and config files were included as candidates if they contained >5 lines of source - File already had some variant of a license header in it (even if <5 lines). All documentation files were explicitly excluded. The following heuristics were used to determine which SPDX license identifiers to apply. - when both scanners couldn't find any license traces, file was considered to have no license information in it, and the top level COPYING file license applied. For non */uapi/* files that summary was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 11139 and resulted in the first patch in this series. If that file was a */uapi/* path one, it was "GPL-2.0 WITH Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 WITH Linux-syscall-note 930 and resulted in the second patch in this series. - if a file had some form of licensing information in it, and was one of the */uapi/* ones, it was denoted with the Linux-syscall-note if any GPL family license was found in the file or had no licensing in it (per prior point). Results summary: SPDX license identifier # files ---------------------------------------------------|------ GPL-2.0 WITH Linux-syscall-note 270 GPL-2.0+ WITH Linux-syscall-note 169 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17 LGPL-2.1+ WITH Linux-syscall-note 15 GPL-1.0+ WITH Linux-syscall-note 14 ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5 LGPL-2.0+ WITH Linux-syscall-note 4 LGPL-2.1 WITH Linux-syscall-note 3 ((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3 ((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1 and that resulted in the third patch in this series. - when the two scanners agreed on the detected license(s), that became the concluded license(s). - when there was disagreement between the two scanners (one detected a license but the other didn't, or they both detected different licenses) a manual inspection of the file occurred. - In most cases a manual inspection of the information in the file resulted in a clear resolution of the license that should apply (and which scanner probably needed to revisit its heuristics). - When it was not immediately clear, the license identifier was confirmed with lawyers working with the Linux Foundation. - If there was any question as to the appropriate license identifier, the file was flagged for further research and to be revisited later in time. In total, over 70 hours of logged manual review was done on the spreadsheet to determine the SPDX license identifiers to apply to the source files by Kate, Philippe, Thomas and, in some cases, confirmation by lawyers working with the Linux Foundation. Kate also obtained a third independent scan of the 4.13 code base from FOSSology, and compared selected files where the other two scanners disagreed against that SPDX file, to see if there was new insights. The Windriver scanner is based on an older version of FOSSology in part, so they are related. Thomas did random spot checks in about 500 files from the spreadsheets for the uapi headers and agreed with SPDX license identifier in the files he inspected. For the non-uapi files Thomas did random spot checks in about 15000 files. In initial set of patches against 4.14-rc6, 3 files were found to have copy/paste license identifier errors, and have been fixed to reflect the correct identifier. Additionally Philippe spent 10 hours this week doing a detailed manual inspection and review of the 12,461 patched files from the initial patch version early this week with: - a full scancode scan run, collecting the matched texts, detected license ids and scores - reviewing anything where there was a license detected (about 500+ files) to ensure that the applied SPDX license was correct - reviewing anything where there was no detection but the patch license was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied SPDX license was correct This produced a worksheet with 20 files needing minor correction. This worksheet was then exported into 3 different .csv files for the different types of files to be modified. These .csv files were then reviewed by Greg. Thomas wrote a script to parse the csv files and add the proper SPDX tag to the file, in the format that the file expected. This script was further refined by Greg based on the output to detect more types of files automatically and to distinguish between header and source .c files (which need different comment types.) Finally Greg ran the script using the .csv files to generate the patches. Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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1fb7d06a |
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19-Oct-2017 |
Milian Wolff <milian.wolff@kdab.com> |
perf report: Use srcline from callchain for hist entries This also removes the symbol name from the srcline column, more on this below. This ensures we use the correct srcline, which could originate from a potentially inlined function. The hist entries used to query for the srcline based purely on the IP, which leads to wrong results for inlined entries. Before: ~~~~~ perf report --inline -s srcline -g none --stdio ... # Children Self Source:Line # ........ ........ .................................................................................................................................. # 94.23% 0.00% __libc_start_main+18446603487898210537 94.23% 0.00% _start+41 44.58% 0.00% main+100 44.58% 0.00% std::_Norm_helper<true>::_S_do_it<double>+100 44.58% 0.00% std::__complex_abs+100 44.58% 0.00% std::abs<double>+100 44.58% 0.00% std::norm<double>+100 36.01% 0.00% hypot+18446603487892193300 25.81% 0.00% main+41 25.81% 0.00% std::__detail::_Adaptor<std::linear_congruential_engine<unsigned long, 16807ul, 0ul, 2147483647ul>, double>::operator()+41 25.81% 0.00% std::uniform_real_distribution<double>::operator()<std::linear_congruential_engine<unsigned long, 16807ul, 0ul, 2147483647ul> >+41 25.75% 25.75% random.h:143 18.39% 0.00% main+57 18.39% 0.00% std::__detail::_Adaptor<std::linear_congruential_engine<unsigned long, 16807ul, 0ul, 2147483647ul>, double>::operator()+57 18.39% 0.00% std::uniform_real_distribution<double>::operator()<std::linear_congruential_engine<unsigned long, 16807ul, 0ul, 2147483647ul> >+57 13.80% 13.80% random.tcc:3330 5.64% 0.00% ??:0 4.13% 4.13% __hypot_finite+163 4.13% 0.00% __hypot_finite+18446603487892193443 ... ~~~~~ After: ~~~~~ perf report --inline -s srcline -g none --stdio ... # Children Self Source:Line # ........ ........ ........................................... # 94.30% 1.19% main.cpp:39 94.23% 0.00% __libc_start_main+18446603487898210537 94.23% 0.00% _start+41 48.44% 1.70% random.h:1823 48.44% 0.00% random.h:1814 46.74% 2.53% random.h:185 44.68% 0.10% complex:589 44.68% 0.00% complex:597 44.68% 0.00% complex:654 44.68% 0.00% complex:664 40.61% 13.80% random.tcc:3330 36.01% 0.00% hypot+18446603487892193300 26.81% 0.00% random.h:151 26.81% 0.00% random.h:332 25.75% 25.75% random.h:143 5.64% 0.00% ??:0 4.13% 4.13% __hypot_finite+163 4.13% 0.00% __hypot_finite+18446603487892193443 ... ~~~~~ Note that this change removes the symbol from the source:line hist column. If this information is desired, users should explicitly query for it if needed. I.e. run this command instead: ~~~~~ perf report --inline -s sym,srcline -g none --stdio ... # To display the perf.data header info, please use --header/--header-only options. # # # Total Lost Samples: 0 # # Samples: 1K of event 'cycles:uppp' # Event count (approx.): 1381229476 # # Children Self Symbol Source:Line # ........ ........ ................................................................................................................................... ........................................... # 94.30% 1.19% [.] main main.cpp:39 94.23% 0.00% [.] __libc_start_main __libc_start_main+18446603487898210537 94.23% 0.00% [.] _start _start+41 48.44% 0.00% [.] std::uniform_real_distribution<double>::operator()<std::linear_congruential_engine<unsigned long, 16807ul, 0ul, 2147483647ul> > (inlined) random.h:1814 48.44% 0.00% [.] std::uniform_real_distribution<double>::operator()<std::linear_congruential_engine<unsigned long, 16807ul, 0ul, 2147483647ul> > (inlined) random.h:1823 46.74% 0.00% [.] std::__detail::_Adaptor<std::linear_congruential_engine<unsigned long, 16807ul, 0ul, 2147483647ul>, double>::operator() (inlined) random.h:185 44.68% 0.00% [.] std::_Norm_helper<true>::_S_do_it<double> (inlined) complex:654 44.68% 0.00% [.] std::__complex_abs (inlined) complex:589 44.68% 0.00% [.] std::abs<double> (inlined) complex:597 44.68% 0.00% [.] std::norm<double> (inlined) complex:664 39.80% 13.59% [.] std::generate_canonical<double, 53ul, std::linear_congruential_engine<unsigned long, 16807ul, 0ul, 2147483647ul> > random.tcc:3330 36.01% 0.00% [.] hypot hypot+18446603487892193300 26.81% 0.00% [.] std::__detail::__mod<unsigned long, 2147483647ul, 16807ul, 0ul> (inlined) random.h:151 26.81% 0.00% [.] std::linear_congruential_engine<unsigned long, 16807ul, 0ul, 2147483647ul>::operator() (inlined) random.h:332 25.75% 0.00% [.] std::__detail::_Mod<unsigned long, 2147483647ul, 16807ul, 0ul, true, true>::__calc (inlined) random.h:143 25.19% 25.19% [.] std::generate_canonical<double, 53ul, std::linear_congruential_engine<unsigned long, 16807ul, 0ul, 2147483647ul> > random.h:143 4.13% 4.13% [.] __hypot_finite __hypot_finite+163 4.13% 0.00% [.] __hypot_finite __hypot_finite+18446603487892193443 ... ~~~~~ Compared to the old behavior, this reduces duplication in the output. Before we used to print the symbol name in the srcline column even when the sym column was explicitly requested. I.e. the output was: ~~~~~ perf report --inline -s sym,srcline -g none --stdio ... # To display the perf.data header info, please use --header/--header-only options. # # # Total Lost Samples: 0 # # Samples: 1K of event 'cycles:uppp' # Event count (approx.): 1381229476 # # Children Self Symbol Source:Line # ........ ........ ................................................................................................................................... .................................................................................................................................. # 94.23% 0.00% [.] __libc_start_main __libc_start_main+18446603487898210537 94.23% 0.00% [.] _start _start+41 44.58% 0.00% [.] main main+100 44.58% 0.00% [.] std::_Norm_helper<true>::_S_do_it<double> (inlined) std::_Norm_helper<true>::_S_do_it<double>+100 44.58% 0.00% [.] std::__complex_abs (inlined) std::__complex_abs+100 44.58% 0.00% [.] std::abs<double> (inlined) std::abs<double>+100 44.58% 0.00% [.] std::norm<double> (inlined) std::norm<double>+100 36.01% 0.00% [.] hypot hypot+18446603487892193300 25.81% 0.00% [.] main main+41 25.81% 0.00% [.] std::__detail::_Adaptor<std::linear_congruential_engine<unsigned long, 16807ul, 0ul, 2147483647ul>, double>::operator() (inlined) std::__detail::_Adaptor<std::linear_congruential_engine<unsigned long, 16807ul, 0ul, 2147483647ul>, double>::operator()+41 25.81% 0.00% [.] std::uniform_real_distribution<double>::operator()<std::linear_congruential_engine<unsigned long, 16807ul, 0ul, 2147483647ul> > (inlined) std::uniform_real_distribution<double>::operator()<std::linear_congruential_engine<unsigned long, 16807ul, 0ul, 2147483647ul> >+41 25.69% 25.69% [.] std::generate_canonical<double, 53ul, std::linear_congruential_engine<unsigned long, 16807ul, 0ul, 2147483647ul> > random.h:143 18.39% 0.00% [.] main main+57 18.39% 0.00% [.] std::__detail::_Adaptor<std::linear_congruential_engine<unsigned long, 16807ul, 0ul, 2147483647ul>, double>::operator() (inlined) std::__detail::_Adaptor<std::linear_congruential_engine<unsigned long, 16807ul, 0ul, 2147483647ul>, double>::operator()+57 18.39% 0.00% [.] std::uniform_real_distribution<double>::operator()<std::linear_congruential_engine<unsigned long, 16807ul, 0ul, 2147483647ul> > (inlined) std::uniform_real_distribution<double>::operator()<std::linear_congruential_engine<unsigned long, 16807ul, 0ul, 2147483647ul> >+57 13.80% 13.80% [.] std::generate_canonical<double, 53ul, std::linear_congruential_engine<unsigned long, 16807ul, 0ul, 2147483647ul> > random.tcc:3330 4.13% 4.13% [.] __hypot_finite __hypot_finite+163 4.13% 0.00% [.] __hypot_finite __hypot_finite+18446603487892193443 ... ~~~~~ Signed-off-by: Milian Wolff <milian.wolff@kdab.com> Reviewed-by: Andi Kleen <ak@linux.intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20171019113836.5548-5-milian.wolff@kdab.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
0c6b4994 |
|
29-Sep-2017 |
Kan Liang <kan.liang@intel.com> |
perf top: Add option to set the number of thread for event synthesize Using UINT_MAX to indicate the default thread#, which is the max number of online CPU. Committer testing: # perf trace --no-inherit -e clone -o /tmp/output perf top --num-thread-synthesize 9 # cat /tmp/output ? ( ? ): ... [continued]: clone()) = 26651 (perf) 0.059 ( 0.010 ms): clone(flags: VM|FS|FILES|SIGHAND|THREAD|SYSVSEM|SETTLS|PARENT_SETTID|CHILD_CLEARTID, child_stack: 0x7f5bfac44f30, parent_tidptr: 0x7f5bfac459d0, child_tidptr: 0x7f5bfac459d0, tls: 0x7f5bfac45700) = 26652 (perf) 0.116 ( 0.014 ms): clone(flags: VM|FS|FILES|SIGHAND|THREAD|SYSVSEM|SETTLS|PARENT_SETTID|CHILD_CLEARTID, child_stack: 0x7f5bfa443f30, parent_tidptr: 0x7f5bfa4449d0, child_tidptr: 0x7f5bfa4449d0, tls: 0x7f5bfa444700) = 26653 (perf) 0.141 ( 0.009 ms): clone(flags: VM|FS|FILES|SIGHAND|THREAD|SYSVSEM|SETTLS|PARENT_SETTID|CHILD_CLEARTID, child_stack: 0x7f5bf9c42f30, parent_tidptr: 0x7f5bf9c439d0, child_tidptr: 0x7f5bf9c439d0, tls: 0x7f5bf9c43700) = 26654 (perf) 0.160 ( 0.012 ms): clone(flags: VM|FS|FILES|SIGHAND|THREAD|SYSVSEM|SETTLS|PARENT_SETTID|CHILD_CLEARTID, child_stack: 0x7f5bf9441f30, parent_tidptr: 0x7f5bf94429d0, child_tidptr: 0x7f5bf94429d0, tls: 0x7f5bf9442700) = 26655 (perf) 0.232 ( 0.013 ms): clone(flags: VM|FS|FILES|SIGHAND|THREAD|SYSVSEM|SETTLS|PARENT_SETTID|CHILD_CLEARTID, child_stack: 0x7f5bf8c40f30, parent_tidptr: 0x7f5bf8c419d0, child_tidptr: 0x7f5bf8c419d0, tls: 0x7f5bf8c41700) = 26656 (perf) 0.393 ( 0.011 ms): clone(flags: VM|FS|FILES|SIGHAND|THREAD|SYSVSEM|SETTLS|PARENT_SETTID|CHILD_CLEARTID, child_stack: 0x7f5be3ffef30, parent_tidptr: 0x7f5be3fff9d0, child_tidptr: 0x7f5be3fff9d0, tls: 0x7f5be3fff700) = 26657 (perf) 0.802 ( 0.012 ms): clone(flags: VM|FS|FILES|SIGHAND|THREAD|SYSVSEM|SETTLS|PARENT_SETTID|CHILD_CLEARTID, child_stack: 0x7f5be37fdf30, parent_tidptr: 0x7f5be37fe9d0, child_tidptr: 0x7f5be37fe9d0, tls: 0x7f5be37fe700) = 26658 (perf) 1.411 ( 0.022 ms): clone(flags: VM|FS|FILES|SIGHAND|THREAD|SYSVSEM|SETTLS|PARENT_SETTID|CHILD_CLEARTID, child_stack: 0x7f5be2ffcf30, parent_tidptr: 0x7f5be2ffd9d0, child_tidptr: 0x7f5be2ffd9d0, tls: 0x7f5be2ffd700) = 26659 (perf) 246.422 ( 0.042 ms): clone(flags: VM|FS|FILES|SIGHAND|THREAD|SYSVSEM|SETTLS|PARENT_SETTID|CHILD_CLEARTID, child_stack: 0x7f5be2ffcf30, parent_tidptr: 0x7f5be2ffd9d0, child_tidptr: 0x7f5be2ffd9d0, tls: 0x7f5be2ffd700) = 26660 (perf) # Signed-off-by: Kan Liang <kan.liang@intel.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Andi Kleen <ak@linux.intel.com> Cc: He Kuang <hekuang@huawei.com> Cc: Lukasz Odzioba <lukasz.odzioba@intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/1506696477-146932-5-git-send-email-kan.liang@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
340b47f5 |
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29-Sep-2017 |
Kan Liang <kan.liang@intel.com> |
perf top: Implement multithreading for perf_event__synthesize_threads The proc files which is sorted with alphabetical order are evenly assigned to several synthesize threads to be processed in parallel. For 'perf top', the threads number hard code to online CPU number. The following patch will introduce an option to set it. For other perf tools, the thread number is 1. Because the process function is not ready for multithreading, e.g. process_synthesized_event. This patch series only support event synthesize multithreading for 'perf top'. For other tools, it can be done separately later. With multithread applied, the total processing time can get up to 1.56x speedup on Knights Mill for 'perf top'. For specific single event processing, the processing time could increase because of the lock contention. So proc_map_timeout may need to be increased. Otherwise some proc maps will be truncated. Based on my test, increasing the proc_map_timeout has small impact on the total processing time. The total processing time still get 1.49x speedup on Knights Mill after increasing the proc_map_timeout. The patch itself doesn't increase the proc_map_timeout. Doesn't need to implement multithreading for per task monitoring, perf_event__synthesize_thread_map. It doesn't have performance issue. Committer testing: # getconf _NPROCESSORS_ONLN 4 # perf trace --no-inherit -e clone -o /tmp/output perf top # tail -4 /tmp/bla 0.124 ( 0.041 ms): clone(flags: VM|FS|FILES|SIGHAND|THREAD|SYSVSEM|SETTLS|PARENT_SETTID|CHILD_CLEARTID, child_stack: 0x7fc3eb3a8f30, parent_tidptr: 0x7fc3eb3a99d0, child_tidptr: 0x7fc3eb3a99d0, tls: 0x7fc3eb3a9700) = 9548 (perf) 0.246 ( 0.023 ms): clone(flags: VM|FS|FILES|SIGHAND|THREAD|SYSVSEM|SETTLS|PARENT_SETTID|CHILD_CLEARTID, child_stack: 0x7fc3eaba7f30, parent_tidptr: 0x7fc3eaba89d0, child_tidptr: 0x7fc3eaba89d0, tls: 0x7fc3eaba8700) = 9549 (perf) 0.286 ( 0.019 ms): clone(flags: VM|FS|FILES|SIGHAND|THREAD|SYSVSEM|SETTLS|PARENT_SETTID|CHILD_CLEARTID, child_stack: 0x7fc3ea3a6f30, parent_tidptr: 0x7fc3ea3a79d0, child_tidptr: 0x7fc3ea3a79d0, tls: 0x7fc3ea3a7700) = 9550 (perf) 246.540 ( 0.047 ms): clone(flags: VM|FS|FILES|SIGHAND|THREAD|SYSVSEM|SETTLS|PARENT_SETTID|CHILD_CLEARTID, child_stack: 0x7fc3ea3a6f30, parent_tidptr: 0x7fc3ea3a79d0, child_tidptr: 0x7fc3ea3a79d0, tls: 0x7fc3ea3a7700) = 9551 (perf) # Signed-off-by: Kan Liang <kan.liang@intel.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Andi Kleen <ak@linux.intel.com> Cc: He Kuang <hekuang@huawei.com> Cc: Lukasz Odzioba <lukasz.odzioba@intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/1506696477-146932-4-git-send-email-kan.liang@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
c23c2a0f |
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11-Sep-2017 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Make copyfile_offset() static There are no usage outside util.c and this is the only remaining reason for fcntl.h to be included in util.h, to get the loff_t definition in Alpine Linux, so make it static. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-2dzlsao7k6ihozs5karw6kpx@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
ecdad24d |
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07-Sep-2017 |
Kan Liang <kan.liang@intel.com> |
perf tools: Use scandir() to replace readdir() In perf_event__synthesize_threads() perf goes through all proc files serially by readdir. scandir() does a snapshoot of /proc, which is multithreading friendly. It's possible that some threads which are added during event synthesize. But the number of lost threads should be small. They should not impact the final analysis. Signed-off-by: Kan Liang <kan.liang@intel.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Lukasz Odzioba <lukasz.odzioba@intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1504806954-150842-3-git-send-email-kan.liang@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
e9def1b2 |
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17-Jul-2017 |
David Carrillo-Cisneros <davidcc@google.com> |
perf tools: Add feature header record to pipe-mode Add header record types to pipe-mode, reusing the functions used in file-mode and leveraging the new struct feat_fd. For alignment, check that synthesized events don't exceed pagesize. Add the perf_event__synthesize_feature event call back to process the new header records. Before this patch: $ perf record -o - -e cycles sleep 1 | perf report --stdio --header [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.000 MB - ] ... After this patch: $ perf record -o - -e cycles sleep 1 | perf report --stdio --header # ======== # captured on: Mon May 22 16:33:43 2017 # ======== # # hostname : my_hostname # os release : 4.11.0-dbx-up_perf # perf version : 4.11.rc6.g6277c80 # arch : x86_64 # nrcpus online : 72 # nrcpus avail : 72 # cpudesc : Intel(R) Xeon(R) CPU E5-2696 v3 @ 2.30GHz # cpuid : GenuineIntel,6,63,2 # total memory : 263457192 kB # cmdline : /root/perf record -o - -e cycles -c 100000 sleep 1 # HEADER_CPU_TOPOLOGY info available, use -I to display # HEADER_NUMA_TOPOLOGY info available, use -I to display # pmu mappings: intel_bts = 6, uncore_imc_4 = 22, uncore_sbox_1 = 47, uncore_cbox_5 = 33, uncore_ha_0 = 16, uncore_cbox [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.000 MB - ] ... Support added for the subcommands: report, inject, annotate and script. Signed-off-by: David Carrillo-Cisneros <davidcc@google.com> Acked-by: David Ahern <dsahern@gmail.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: He Kuang <hekuang@huawei.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Turner <pjt@google.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Simon Que <sque@chromium.org> Cc: Stephane Eranian <eranian@google.com> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/20170718042549.145161-16-davidcc@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
b843f62a |
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27-Apr-2017 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf symbols: Accept symbols starting at address 0 That is the case of _text on s390, and we have some functions that return an address, using address zero to report problems, oops. This would lead the symbol loading routines to not use "_text" as the reference relocation symbol, or the first symbol for the kernel, but use instead "_stext", that is at the same address on x86_64 and others, but not on s390: [acme@localhost perf-4.11.0-rc6]$ head -15 /proc/kallsyms 0000000000000000 T _text 0000000000000418 t iplstart 0000000000000800 T start 000000000000080a t .base 000000000000082e t .sk8x8 0000000000000834 t .gotr 0000000000000842 t .cmd 0000000000000846 t .parm 000000000000084a t .lowcase 0000000000010000 T startup 0000000000010010 T startup_kdump 0000000000010214 t startup_kdump_relocated 0000000000011000 T startup_continue 00000000000112a0 T _ehead 0000000000100000 T _stext [acme@localhost perf-4.11.0-rc6]$ Which in turn would make 'perf test vmlinux' to fail because it wouldn't find the symbols before "_stext" in kallsyms. Fix it by using the return value only for errors and storing the address, when the symbol is successfully found, in a provided pointer arg. Before this patch: After: [acme@localhost perf-4.11.0-rc6]$ tools/perf/perf test -v 1 1: vmlinux symtab matches kallsyms : --- start --- test child forked, pid 40693 Looking at the vmlinux_path (8 entries long) Using /usr/lib/debug/lib/modules/3.10.0-654.el7.s390x/vmlinux for symbols ERR : 0: _text not on kallsyms ERR : 0x418: iplstart not on kallsyms ERR : 0x800: start not on kallsyms ERR : 0x80a: .base not on kallsyms ERR : 0x82e: .sk8x8 not on kallsyms ERR : 0x834: .gotr not on kallsyms ERR : 0x842: .cmd not on kallsyms ERR : 0x846: .parm not on kallsyms ERR : 0x84a: .lowcase not on kallsyms ERR : 0x10000: startup not on kallsyms ERR : 0x10010: startup_kdump not on kallsyms ERR : 0x10214: startup_kdump_relocated not on kallsyms ERR : 0x11000: startup_continue not on kallsyms ERR : 0x112a0: _ehead not on kallsyms <SNIP warnings> test child finished with -1 ---- end ---- vmlinux symtab matches kallsyms: FAILED! [acme@localhost perf-4.11.0-rc6]$ After: [acme@localhost perf-4.11.0-rc6]$ tools/perf/perf test -v 1 1: vmlinux symtab matches kallsyms : --- start --- test child forked, pid 47160 <SNIP warnings> test child finished with 0 ---- end ---- vmlinux symtab matches kallsyms: Ok [acme@localhost perf-4.11.0-rc6]$ Reported-by: Michael Petlan <mpetlan@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-9x9bwgd3btwdk1u51xie93fz@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
5ab8c689 |
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25-Apr-2017 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Move event prototypes from util.h to event.h More needs to be done to have the actual functions and variables in a smaller .c file that can then be included in the python binding, avoiding dragging more stuff into it. Link: http://lkml.kernel.org/n/tip-uecxz7cqkssouj7tlxrkqpl4@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
9d43f5e8 |
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20-Apr-2017 |
Jiri Olsa <jolsa@kernel.org> |
perf tools: Fix the code to strip command name Recent commit broke command name strip in perf_event__get_comm_ids function. It replaced left to right search for '\n' with rtrim, which actually does right to left search. It occasionally caught earlier '\n' and kept trash in the command name. Keeping the ltrim, but moving back the left to right '\n' search instead of the rtrim. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Acked-by: Taeung Song <treeze.taeung@gmail.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Yao Jin <yao.jin@linux.intel.com> Fixes: bdd97ca63faa ("perf tools: Refactor the code to strip command name with {l,r}trim()") Link: http://lkml.kernel.org/r/20170420092430.29657-1-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
7a8ef4c4 |
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19-Apr-2017 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Remove string.h, unistd.h and sys/stat.h from util.h Not needed in this header, added to the places that need FILE, putchar(), access() and a few other prototypes. Link: http://lkml.kernel.org/n/tip-xxtdsl6nsna82j7puwbdjqhs@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
76b31a29 |
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17-Apr-2017 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Remove include dirent.h from util.h The files using the dirent.h routines should instead include it, reducing the includes hell that lead to longer build times. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-42g2f4z6nfg7mdb2ae97n7tj@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
a43783ae |
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18-Apr-2017 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Include errno.h where needed Removing it from util.h, part of an effort to disentangle the includes hell, that makes changes to util.h or something included by it to cause a complete rebuild of the tools. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-ztrjy52q1rqcchuy3rubfgt2@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
a067558e |
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17-Apr-2017 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Move extra string util functions to util/string2.h Moving them from util.h, where they don't belong. Since libc already have string.h, name it slightly differently, as string2.h. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-eh3vz5sqxsrdd8lodoro4jrw@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
3d689ed6 |
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17-Apr-2017 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Move sane ctype stuff from util.h to sane_ctype.h More stuff that came from git, out of the hodge-podge that is util.h Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-e3lana4gctz3ub4hn4y29hkw@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
fd20e811 |
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17-Apr-2017 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Including missing inttypes.h header Needed to use the PRI[xu](32,64) formatting macros. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-wkbho8kaw24q67dd11q0j39f@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
877a7a11 |
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17-Apr-2017 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Add include <linux/kernel.h> where ARRAY_SIZE() is used To pave the way for further cleanups where linux/kernel.h may stop being included in some header. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-qqxan6tfsl6qx3l0v3nwgjvk@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
16eb8136 |
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12-Apr-2017 |
David Carrillo-Cisneros <davidcc@google.com> |
Revert "perf tools: Fix include of linux/mman.h" In https://lkml.org/lkml/2017/2/2/16 I reported a build error that I believed was caused by wrong uapi includes. The synthom was fixed by Arnaldo in: commit 2f7db5557994 ("perf tools: Fix include of linux/mman.h") but I was wrong attributing the problem to the uapi include. The root cause was that I was using ARCH=x86_64, hence using the wrong uapi include path. This explains why no one else ran into this build problem. Signed-off-by: David Carrillo-Cisneros <davidcc@google.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: He Kuang <hekuang@huawei.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Paul Turner <pjt@google.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Simon Que <sque@chromium.org> Cc: Stephane Eranian <eranian@google.com> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/20170412064919.92449-8-davidcc@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
bdd97ca6 |
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07-Apr-2017 |
Taeung Song <treeze.taeung@gmail.com> |
perf tools: Refactor the code to strip command name with {l,r}trim() After reading command name from /proc/<pid>/status, use ltrim() and rtrim() to strip command name, not using just while loop, isspace() and etc. Signed-off-by: Taeung Song <treeze.taeung@gmail.com> Acked-by: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/1491575061-704-6-git-send-email-treeze.taeung@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
05a1f47e |
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16-Mar-2017 |
Alexander Shishkin <alexander.shishkin@linux.intel.com> |
perf tools: Handle partial AUX records and print a warning This patch decodes the 'partial' flag in AUX records and prints a warning to the user, so that they don't have to guess why their PT traces contain gaps (or missing altogether): Warning: AUX data had gaps in it 8 times out of 8! Are you running a KVM guest in the background? Trying to be even more helpful, we will detect if the user's kvm driver sets up exclusive VMX root mode for the entire lifespan of the kvm process: Reloading kvm_intel module with vmm_exclusive=0 will reduce the gaps to only guest's timeslices. Note however, that you'll still have gaps in cpu-wide traces even with vmm_exclusive=0, but the number of gaps will be below 100% (as opposed to the above example). Currently this is the only reason for partial records. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Stephane Eranian <eranian@google.com> Cc: Vince Weaver <vince@deater.net> Link: http://lkml.kernel.org/r/8760j941ig.fsf@ashishki-desk.ger.corp.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
88b897a3 |
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15-Mar-2017 |
Stephane Eranian <eranian@google.com> |
perf tools: Make perf_event__synthesize_mmap_events() scale This patch significantly improves the execution time of perf_event__synthesize_mmap_events() when running perf record on systems where processes have lots of threads. It just happens that cat /proc/pid/maps support uses a O(N^2) algorithm to generate each map line in the maps file. If you have 1000 threads, then you have necessarily 1000 stacks. For each vma, you need to check if it corresponds to a thread's stack. With a large number of threads, this can take a very long time. I have seen latencies >> 10mn. As of today, perf does not use the fact that a mapping is a stack, therefore we can work around the issue by using /proc/pid/tasks/pid/maps. This entry does not try to map a vma to stack and is thus much faster with no loss of functonality. The proc-map-timeout logic is kept in case users still want some upper limit. In V2, we fix the file path from /proc/pid/tasks/pid/maps to actual /proc/pid/task/pid/maps, tasks -> task. Thanks Arnaldo for catching this. Committer note: This problem seems to have been elliminated in the kernel since commit : b18cb64ead40 ("fs/proc: Stop trying to report thread stacks"). Signed-off-by: Stephane Eranian <eranian@google.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20170315135059.GC2177@redhat.com Link: http://lkml.kernel.org/r/1489598233-25586-1-git-send-email-eranian@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
e907caf3 |
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07-Mar-2017 |
Hari Bathini <hbathini@linux.vnet.ibm.com> |
perf record: Synthesize namespace events for current processes Synthesize PERF_RECORD_NAMESPACES events for processes that were running prior to invocation of perf record. The data for this is taken from /proc/$PID/ns. These changes make way for analyzing events with regard to namespaces. Committer notes: Check if 'tool' is NULL in perf_event__synthesize_namespaces(), as in the test__mmap_thread_lookup case, i.e. 'perf test Lookup mmap thread". Testing it: # ps axH > /tmp/allthreads # perf record -a --namespaces usleep 1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 1.169 MB perf.data (8 samples) ] # perf report -D | grep PERF_RECORD_NAMESPACES | wc -l 602 # wc -l /tmp/allthreads 601 /tmp/allthreads # tail /tmp/allthreads 16951 pts/4 T 0:00 git rebase -i a033bf1bfacdaa25642e6bcc857a7d0f67cc3c92^ 16952 pts/4 T 0:00 /bin/sh /usr/libexec/git-core/git-rebase -i a033bf1bfacdaa25642e6bcc857a7d0f67cc3c92^ 17176 pts/4 T 0:00 git commit --amend --no-post-rewrite 17204 pts/4 T 0:00 vim /home/acme/git/linux/.git/COMMIT_EDITMSG 18939 ? S 0:00 [kworker/2:1] 18947 ? S 0:00 [kworker/3:0] 18974 ? S 0:00 [kworker/1:0] 19047 ? S 0:00 [kworker/0:1] 19152 pts/6 S+ 0:00 weechat 19153 pts/7 R+ 0:00 ps axH # perf report -D | grep PERF_RECORD_NAMESPACES | tail 0 0 0x125068 [0xa0]: PERF_RECORD_NAMESPACES 17176/17176 - nr_namespaces: 7 0 0 0x1255b8 [0xa0]: PERF_RECORD_NAMESPACES 17204/17204 - nr_namespaces: 7 0 0 0x125df0 [0xa0]: PERF_RECORD_NAMESPACES 18939/18939 - nr_namespaces: 7 0 0 0x125f00 [0xa0]: PERF_RECORD_NAMESPACES 18947/18947 - nr_namespaces: 7 0 0 0x126010 [0xa0]: PERF_RECORD_NAMESPACES 18974/18974 - nr_namespaces: 7 0 0 0x126120 [0xa0]: PERF_RECORD_NAMESPACES 19047/19047 - nr_namespaces: 7 0 0 0x126230 [0xa0]: PERF_RECORD_NAMESPACES 19152/19152 - nr_namespaces: 7 0 0 0x129330 [0xa0]: PERF_RECORD_NAMESPACES 19154/19154 - nr_namespaces: 7 0 0 0x12a1f8 [0xa0]: PERF_RECORD_NAMESPACES 19155/19155 - nr_namespaces: 7 0 0 0x12b0b8 [0xa0]: PERF_RECORD_NAMESPACES 19155/19155 - nr_namespaces: 7 # Humm, investigate why we got two record for the 19155 pid/tid... Signed-off-by: Hari Bathini <hbathini@linux.vnet.ibm.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexei Starovoitov <ast@fb.com> Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com> Cc: Aravinda Prasad <aravinda@linux.vnet.ibm.com> Cc: Brendan Gregg <brendan.d.gregg@gmail.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: Eric Biederman <ebiederm@xmission.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sargun Dhillon <sargun@sargun.me> Cc: Steven Rostedt <rostedt@goodmis.org> Link: http://lkml.kernel.org/r/148891931111.25309.11073854609798681633.stgit@hbathini.in.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
f3b3614a |
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07-Mar-2017 |
Hari Bathini <hbathini@linux.vnet.ibm.com> |
perf tools: Add PERF_RECORD_NAMESPACES to include namespaces related info Introduce a new option to record PERF_RECORD_NAMESPACES events emitted by the kernel when fork, clone, setns or unshare are invoked. And update perf-record documentation with the new option to record namespace events. Committer notes: Combined it with a later patch to allow printing it via 'perf report -D' and be able to test the feature introduced in this patch. Had to move here also perf_ns__name(), that was introduced in another later patch. Also used PRIu64 and PRIx64 to fix the build in some enfironments wrt: util/event.c:1129:39: error: format '%lx' expects argument of type 'long unsigned int', but argument 6 has type 'long long unsigned int' [-Werror=format=] ret += fprintf(fp, "%u/%s: %lu/0x%lx%s", idx ^ Testing it: # perf record --namespaces -a ^C[ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 1.083 MB perf.data (423 samples) ] # # perf report -D <SNIP> 3 2028902078892 0x115140 [0xa0]: PERF_RECORD_NAMESPACES 14783/14783 - nr_namespaces: 7 [0/net: 3/0xf0000081, 1/uts: 3/0xeffffffe, 2/ipc: 3/0xefffffff, 3/pid: 3/0xeffffffc, 4/user: 3/0xeffffffd, 5/mnt: 3/0xf0000000, 6/cgroup: 3/0xeffffffb] 0x1151e0 [0x30]: event: 9 . . ... raw event: size 48 bytes . 0000: 09 00 00 00 02 00 30 00 c4 71 82 68 0c 7f 00 00 ......0..q.h.... . 0010: a9 39 00 00 a9 39 00 00 94 28 fe 63 d8 01 00 00 .9...9...(.c.... . 0020: 03 00 00 00 00 00 00 00 ce c4 02 00 00 00 00 00 ................ <SNIP> NAMESPACES events: 1 <SNIP> # Signed-off-by: Hari Bathini <hbathini@linux.vnet.ibm.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexei Starovoitov <ast@fb.com> Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com> Cc: Aravinda Prasad <aravinda@linux.vnet.ibm.com> Cc: Brendan Gregg <brendan.d.gregg@gmail.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: Eric Biederman <ebiederm@xmission.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sargun Dhillon <sargun@sargun.me> Cc: Steven Rostedt <rostedt@goodmis.org> Link: http://lkml.kernel.org/r/148891930386.25309.18412039920746995488.stgit@hbathini.in.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
2f7db555 |
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07-Feb-2017 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Fix include of linux/mman.h It was using uapi/linux/mmap.h which caused for at least one reporter, that hasn't specified in what environment the problem manifests itself: ---- The original error is: In file included from util/event.c:2:0: ...tools/include/uapi/linux/mman.h:4:27: fatal error: uapi/asm/mman.h: No such file or directory #include <uapi/asm/mman.h> ^ compilation terminated. ---- Test built it on these containers: # dm 1 alpine:3.4: Ok 2 android-ndk:r12b-arm: Ok 3 archlinux:latest: Ok 4 centos:5: Ok 5 centos:6: Ok 6 centos:7: Ok 7 debian:7: Ok 8 debian:8: Ok 9 debian:experimental: Ok 10 debian:experimental-x-arm64: Ok 11 debian:experimental-x-mips: Ok 12 debian:experimental-x-mips64: Ok 13 debian:experimental-x-mipsel: Ok 14 fedora:20: Ok 15 fedora:21: Ok 16 fedora:22: Ok 17 fedora:23: Ok 18 fedora:24: Ok 19 fedora:24-x-ARC-uClibc: Ok 20 fedora:25: Ok 21 fedora:rawhide: Ok 22 mageia:5: Ok 23 opensuse:13.2: Ok 24 opensuse:42.1: Ok 25 opensuse:tumbleweed: Ok 26 ubuntu:12.04.5: Ok 27 ubuntu:14.04.4-x-linaro-arm64: Ok 28 ubuntu:15.10: Ok 29 ubuntu:16.04: Ok 30 ubuntu:16.04-x-arm: Ok 31 ubuntu:16.04-x-arm64: Ok 32 ubuntu:16.04-x-powerpc: Ok 33 ubuntu:16.04-x-powerpc64: Ok 34 ubuntu:16.04-x-powerpc64el: Ok 35 ubuntu:16.04-x-s390: Ok 36 ubuntu:16.10: Ok Reported-by: David Carrillo-Cisneros <davidcc@google.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: He Kuang <hekuang@huawei.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Michal Marek <mmarek@suse.com> Cc: Paul Turner <pjt@google.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Cc: Wang Nan <wangnan0@huawei.com> Fixes: fbef103fad50 ("perf tools: Do hugetlb handling in more systems") Link: http://lkml.kernel.org/n/tip-4wm5xmjz5wgbq7ucyz4dyd72@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
973186ca |
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23-Sep-2016 |
Adrian Hunter <adrian.hunter@intel.com> |
perf tools: Fix MMAP event synthesis broken by MAP_HUGETLB change Patch "perf record: Mark MAP_HUGETLB when synthesizing mmap events") breaks MMAP event synthesis. The executable name comparison will match any name if the length is zero, resulting in all the user space maps becoming anonymous. This is particularly noticeable with system-wide traces. Example: perf record -a sleep 1 perf script --show-mmap-events Committer note: That is not the case when, say, one has a qemu instance and libvirt actually mounts hugetlbfs. To test this I had to first umount it: [root@jouet ~]# mount | grep hugetlbfs hugetlbfs on /dev/hugepages type hugetlbfs (rw,relatime,seclabel) [root@jouet ~]# After unmount it the error fixed by this patch manifests itself: # perf record -a sleep 1 # perf script --show-mmap-events | grep PERF_RECORD_MMAP2 | head -5 systemd 0 [000] 0.000000: PERF_RECORD_MMAP2 1/1: [0x557d47ed8000(0x167000) @ 0 fd:00 3146896 7362875424355726126]: r-xp //anon systemd 0 [000] 0.000000: PERF_RECORD_MMAP2 1/1: [0x7f96c488d000(0x4000) @ 0 fd:00 3153214 7362875424355726126]: r-xp //anon systemd 0 [000] 0.000000: PERF_RECORD_MMAP2 1/1: [0x7f96c4a92000(0x3d000) @ 0 fd:00 3159276 7362875424355726126]: r-xp //anon systemd 0 [000] 0.000000: PERF_RECORD_MMAP2 1/1: [0x7f96c4cd5000(0x15000) @ 0 fd:00 3153725 7362875424355726126]: r-xp //anon systemd 0 [000] 0.000000: PERF_RECORD_MMAP2 1/1: [0x7f96c4eeb000(0x25000) @ 0 fd:00 3153260 7362875424355726126]: r-xp //anon # Fixed version: # perf record -a sleep 1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 1.419 MB perf.data (182 samples) ] # perf script --show-mmap-events | grep PERF_RECORD_MMAP2 | head -5 systemd 0 [000] 0.000000: PERF_RECORD_MMAP2 1/1: [0x557d47ed8000(0x167000) @ 0 fd:00 3146896 7362875424355726126]: r-xp /usr/lib/systemd/systemd systemd 0 [000] 0.000000: PERF_RECORD_MMAP2 1/1: [0x7f96c488d000(0x4000) @ 0 fd:00 3153214 7362875424355726126]: r-xp /usr/lib64/libuuid.so.1.3.0 systemd 0 [000] 0.000000: PERF_RECORD_MMAP2 1/1: [0x7f96c4a92000(0x3d000) @ 0 fd:00 3159276 7362875424355726126]: r-xp /usr/lib64/libblkid.so.1.1.0 systemd 0 [000] 0.000000: PERF_RECORD_MMAP2 1/1: [0x7f96c4cd5000(0x15000) @ 0 fd:00 3153725 7362875424355726126]: r-xp /usr/lib64/libz.so.1.2.8 systemd 0 [000] 0.000000: PERF_RECORD_MMAP2 1/1: [0x7f96c4eeb000(0x25000) @ 0 fd:00 3153260 7362875424355726126]: r-xp /usr/lib64/liblzma.so.5.2.2 [root@jouet ~]# Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Link: http://lkml.kernel.org/r/1474641528-18776-3-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
fbef103f |
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12-Sep-2016 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Do hugetlb handling in more systems The csets: 0ac3348e5024 ("perf tools: Recognize hugetlb mapping as anon mapping") d7e404af115b ("perf record: Mark MAP_HUGETLB when synthesizing mmap events") Added code conditional on MAP_HUGETLB, to make it build in older systems where that define wasn't available. Now that we grabbed copies of uapi/linux/mmap.h to have all those definitions in tools/, use it so that we can support building the tools for older systems (without the MAP_HUGETLB define in its libc headers) using new kernels that support such maps. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Cc: Zefan Li <lizefan@huawei.com> Link: http://lkml.kernel.org/n/tip-wv6oqbfkpxbix4umj2kcfmaz@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
d7e404af |
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05-Sep-2016 |
Wang Nan <wangnan0@huawei.com> |
perf record: Mark MAP_HUGETLB when synthesizing mmap events When synthesizing mmap events, add MAP_HUGETLB map flag if the source of mapping is file in hugetlbfs. After this patch, perf can identify hugetlb mapping even if perf is started after the mapping of huge pages (like with 'perf top'). Signed-off-by: Wang Nan <wangnan0@huawei.com> Reviewed-by: Nilay Vaish <nilayvaish@gmail.com> Cc: He Kuang <hekuang@huawei.com> Cc: Hou Pengyang <houpengyang@huawei.com> Cc: Zefan Li <lizefan@huawei.com> Link: http://lkml.kernel.org/r/1473137909-142064-4-git-send-email-wangnan0@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
be39db9f |
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01-Sep-2016 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf symbols: Remove symbol_filter_t machinery We're not using it anymore, few users were, but we really could do without it, simplify lots of functions by removing it. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-1zng8wdznn00iiz08bb7q3vn@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
0890e97c |
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01-Sep-2016 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf machine: Remove machine->symbol_filter and friends Including machines__set_symbol_filter(), not used anymore. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-7o1qgmrpvzuis4a9f0t8mnri@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
a24020e6 |
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28-Jun-2016 |
Jiri Olsa <jolsa@kernel.org> |
perf tools: Change cpu_map__fprintf output Display cpu map in standard list form. (perf report -D output on perf stat data). before: 0x590 [0x18]: PERF_RECORD_CPU_MAP nr: 4 cpus: 0, 1, 2, 3 after: 0x590 [0x18]: PERF_RECORD_CPU_MAP: 0-3 Adding automated testcase. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1467113345-12669-4-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
3dc6c1d5 |
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24-May-2016 |
Wang Nan <wangnan0@huawei.com> |
perf record: Fix crash when kptr is restricted Before this patch, a simple 'perf record' could fail if kptr_restrict is set to 1 (for normal user) or 2 (for root): # perf record ls WARNING: Kernel address maps (/proc/{kallsyms,modules}) are restricted, check /proc/sys/kernel/kptr_restrict. Samples in kernel functions may not be resolved if a suitable vmlinux file is not found in the buildid cache or in the vmlinux path. Samples in kernel modules won't be resolved at all. If some relocation was applied (e.g. kexec) symbols may be misresolved even with a suitable vmlinux or kallsyms file. Segmentation fault (core dumped) This patch skips perf_event__synthesize_kernel_mmap() when kptr is not available. Signed-off-by: Wang Nan <wangnan0@huawei.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Fixes: 45e90056904b ("perf machine: Do not bail out if not managing to read ref reloc symbol") Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1464081688-167940-2-git-send-email-wangnan0@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
2515e614 |
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08-Apr-2016 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Use readdir() instead of deprecated readdir_r() The readdir() function is thread safe as long as just one thread uses a DIR, which is the case when synthesizing events for pre-existing threads by traversing /proc, so, to avoid breaking the build with glibc-2.23.90 (upcoming 2.24), use it instead of readdir_r(). See: http://man7.org/linux/man-pages/man3/readdir.3.html "However, in modern implementations (including the glibc implementation), concurrent calls to readdir() that specify different directory streams are thread-safe. In cases where multiple threads must read from the same directory stream, using readdir() with external synchronization is still preferable to the use of the deprecated readdir_r(3) function." Noticed while building on a Fedora Rawhide docker container. CC /tmp/build/perf/util/event.o util/event.c: In function '__event__synthesize_thread': util/event.c:466:2: error: 'readdir_r' is deprecated [-Werror=deprecated-declarations] while (!readdir_r(tasks, &dirent, &next) && next) { ^~~~~ In file included from /usr/include/features.h:368:0, from /usr/include/stdint.h:25, from /usr/lib/gcc/x86_64-redhat-linux/6.0.0/include/stdint.h:9, from /git/linux/tools/include/linux/types.h:6, from util/event.c:1: /usr/include/dirent.h:189:12: note: declared here Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-i1vj7nyjp2p750rirxgrfd3c@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
7093b4c9 |
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08-Apr-2016 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Use readdir() instead of deprecated readdir_r() The readdir() function is thread safe as long as just one thread uses a DIR, which is the case when synthesizing events for pre-existing threads by traversing /proc, so, to avoid breaking the build with glibc-2.23.90 (upcoming 2.24), use it instead of readdir_r(). See: http://man7.org/linux/man-pages/man3/readdir.3.html "However, in modern implementations (including the glibc implementation), concurrent calls to readdir() that specify different directory streams are thread-safe. In cases where multiple threads must read from the same directory stream, using readdir() with external synchronization is still preferable to the use of the deprecated readdir_r(3) function." Noticed while building on a Fedora Rawhide docker container. CC /tmp/build/perf/util/event.o util/event.c: In function '__event__synthesize_thread': util/event.c:466:2: error: 'readdir_r' is deprecated [-Werror=deprecated-declarations] while (!readdir_r(tasks, &dirent, &next) && next) { ^~~~~ In file included from /usr/include/features.h:368:0, from /usr/include/stdint.h:25, from /usr/lib/gcc/x86_64-redhat-linux/6.0.0/include/stdint.h:9, from /git/linux/tools/include/linux/types.h:6, from util/event.c:1: /usr/include/dirent.h:189:12: note: declared here Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-i1vj7nyjp2p750rirxgrfd3c@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
46bc29b9 |
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08-Mar-2016 |
Adrian Hunter <adrian.hunter@intel.com> |
perf tools: Add time conversion event Intel PT uses the time members from the perf_event_mmap_page to convert between TSC and perf time. Due to a lack of foresight when Intel PT was implemented, those time members were recorded in the (implementation dependent) AUXTRACE_INFO event, the structure of which is generally inaccessible outside of the Intel PT decoder. However now the conversion between TSC and perf time is needed when processing a jitdump file when Intel PT has been used for tracing. So add a user event to record the time members. 'perf record' will synthesize the event if the information is available. And session processing will put a copy of the event on the session so that tools like 'perf inject' can easily access it. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1457426324-30158-1-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
3ea223ad |
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29-Mar-2016 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Add missing initialization of perf_sample.cpumode in synthesized samples In 473398a21d28 ("perf tools: Add cpumode to struct perf_sample"), I missed some places where perf_sample fields are directly initialized in addition to what is done in perf_evsel__parse_sample(), namely when synthesizing PERF_RECORD_{MMAP*,COMM,FORK,EXIT} for pre-existing threads and also in intel_pt and intel_bts when synthesizing events from processor trace, the jitdump code also was affected, fix it. The problem was noticed with running: # perf record -e intel_pt//u true # perf script Where the samples wouldn't get resolved because perf_sample.cpumode would be left as zero, i.e. PERF_RECORD_MISC_CPUMODE_UNKNOWN, not resolving as kernel, hypervisor or user cpu modes. Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Fixes: 473398a21d28 ("perf tools: Add cpumode to struct perf_sample") Link: http://lkml.kernel.org/n/tip-n5sdauxgk24d5nun8kuuu2mh@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
c2740a87 |
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22-Mar-2016 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf thread: Rename perf_event__preprocess_sample_addr to thread__resolve Since none of the perf_event fields are used anymore, just the perf_sample ones, and since this resolves to (map, symbol) from data structures within struct thread, rename it to thread__resolve and make the argument ordering similar to the one in machine__resolve(). Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Hemant Kumar <hemant@linux.vnet.ibm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Cc: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-2b33hs9bp550tezzlhl4kejh@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
bb3eb566 |
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22-Mar-2016 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf machine: Rename perf_event__preprocess_sample to machine__resolve Since we only deal with fields in the passed struct perf_sample move this method to struct machine, that is where the perf_sample fields will be resolved to a struct addr_location, i.e. thread, map, symbol, etc. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Hemant Kumar <hemant@linux.vnet.ibm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Cc: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-a1ww2lbm2vbuqsv4p7ilubu9@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
473398a2 |
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22-Mar-2016 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Add cpumode to struct perf_sample To avoid parsing event->header.misc in many locations. This will also allow setting perf.sample.{ip,cpumode} in a single place, from tracepoint fields, as needed by 'perf kvm' with PPC guests, where the guest hardware counters is not available at the host. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Hemant Kumar <hemant@linux.vnet.ibm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Cc: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-qp3yradhyt6q3wl895b1aat0@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
89fee59b |
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19-Jan-2016 |
Marcin Ślusarz <marcin.slusarz@gmail.com> |
perf tools: handle spaces in file names obtained from /proc/pid/maps Steam frequently puts game binaries in folders with spaces. Note: "(deleted)" markers are now treated as part of the file name. Signed-off-by: Marcin Ślusarz <marcin.slusarz@gmail.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Fixes: 6064803313ba ("perf tools: Use sscanf for parsing /proc/pid/maps") Link: http://lkml.kernel.org/r/20160119190303.GA17579@marcin-Inspiron-7720 Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
b0fb978e |
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12-Jan-2016 |
Wang Nan <wangnan0@huawei.com> |
perf tools: Fix mmap2 event allocation in synthesize code perf_event__synthesize_mmap_events() issues mmap2 events, but the memory of that event is allocated using: mmap_event = malloc(sizeof(mmap_event->mmap) + machine->id_hdr_size); If path of mmap source file is long (near PATH_MAX), random crash would happen. Should use sizeof(mmap_event->mmap2). Fix two memory allocations. Signed-off-by: Wang Nan <wangnan0@huawei.com> Reviewed-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: He Kuang <hekuang@huawei.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1452593524-138970-1-git-send-email-wangnan0@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
ffe77725 |
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25-Oct-2015 |
Jiri Olsa <jolsa@kernel.org> |
perf tools: Add event_update user level event It'll serve as a base event for additional event attributes details, that are not part of the attr event. At the moment this event is just a dummy one without any specific functionality. The type value will distinguish the update event details. It'll come in the following patches. The idea for this event is to be extensible for any update that the event might need in the future. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Kan Liang <kan.liang@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1445784728-21732-21-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
d4c22591 |
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25-Oct-2015 |
Jiri Olsa <jolsa@kernel.org> |
perf tools: Add stat round event synthesize function Introduce the perf_event__synthesize_stat_round function to synthesize a 'struct stat_round_event'. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Kan Liang <kan.liang@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1445784728-21732-19-git-send-email-jolsa@kernel.org [ Renamed 'time' parameter to 'evtime' to fix build on older systems ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
2d8f0f18 |
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25-Oct-2015 |
Jiri Olsa <jolsa@kernel.org> |
perf tools: Add stat round user level event Adding the stat round event to be stored after each stat interval round, so that report tools (report/script) gets notified and process interval data. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Kan Liang <kan.liang@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1445784728-21732-18-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
5796f8f0 |
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25-Oct-2015 |
Jiri Olsa <jolsa@kernel.org> |
perf tools: Add stat event synthesize function Introduce the perf_event__synthesize_stat function to synthesize a 'struct stat_event'. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Kan Liang <kan.liang@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1445784728-21732-16-git-send-email-jolsa@kernel.org [ Renamed 'stat' parameter to 'st' to fix 'already defined' build error with older distros (e.g. RHEL6.7) ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
d80518c9 |
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25-Oct-2015 |
Jiri Olsa <jolsa@kernel.org> |
perf tools: Add stat user level event Adding a stat event to store a 'struct perf_counter_values' for a given event/cpu/thread. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Kan Liang <kan.liang@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1445784728-21732-15-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
8e381596 |
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25-Oct-2015 |
Jiri Olsa <jolsa@kernel.org> |
perf tools: Add stat config event read function Introducing the perf_event__read_stat_config function to read a struct perf_stat_config object data from a stat config event. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Kan Liang <kan.liang@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1445784728-21732-14-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
67424342 |
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25-Oct-2015 |
Jiri Olsa <jolsa@kernel.org> |
perf tools: Add stat config event synthesize function Introduce the perf_event__synthesize_stat_config to synthesize a 'struct perf_stat_config'. Storing the stat config in the form of tag-value pairs will, I believe, sort out future version extensibility issues. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Kan Liang <kan.liang@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1445784728-21732-13-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
374fb9e3 |
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25-Oct-2015 |
Jiri Olsa <jolsa@kernel.org> |
perf tools: Add stat config user level event Adding the stat config event to pass/store stat config data, so report tools (report/script) know how to interpret stat data. The config data is stored in a 'tag|value' way to allow for easy extension and backwards compatibility. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Kan Liang <kan.liang@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1445784728-21732-12-git-send-email-jolsa@kernel.org [ stat_config_term_event -> stat_config_event_entry ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
eb12a1af |
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25-Oct-2015 |
Jiri Olsa <jolsa@kernel.org> |
perf cpu_map: Add perf_event__fprintf_cpu_map function To display a cpu_map event for raw dump. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Kan Liang <kan.liang@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1445784728-21732-11-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
6c872901 |
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25-Oct-2015 |
Jiri Olsa <jolsa@kernel.org> |
perf cpu_map: Add cpu_map event synthesize function Introduce the perf_event__synthesize_cpu_map function to synthesize a struct cpu_map. Added generic interface: cpu_map_data__alloc cpu_map_data__synthesize to make the cpu_map synthesizing usable for other events. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Kan Liang <kan.liang@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1445784728-21732-9-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
6640b6c2 |
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25-Oct-2015 |
Jiri Olsa <jolsa@kernel.org> |
perf cpu_map: Add cpu_map user level event Adding the cpu_map event to pass/store cpu maps as data in a pipe/perf.data. We store maps in 2 formats: - list of cpus - mask of cpus The format that takes less space is selected transparently in the following patch. The interface is made generic, so we could add the cpumap event data into another event in the following patches. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Kan Liang <kan.liang@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1445784728-21732-8-git-send-email-jolsa@kernel.org [ cpu_map_data_cpus -> cpu_map_entries, cpu_map_data_mask -> cpu_map_mask ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
ec7fa596 |
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25-Oct-2015 |
Jiri Olsa <jolsa@kernel.org> |
perf thread_map: Add perf_event__fprintf_thread_map function To display a thread_map event for a raw dump. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Kan Liang <kan.liang@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1445784728-21732-7-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
99471c96 |
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25-Oct-2015 |
Jiri Olsa <jolsa@kernel.org> |
perf thread_map: Add thread_map event sythesize function Introduce the perf_event__synthesize_thread_map2 function to synthesize struct thread_map. The perf_event__synthesize_thread_map name is already taken for synthesizing the complete threads data (comm/mmap/fork). Signed-off-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Kan Liang <kan.liang@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1445784728-21732-5-git-send-email-jolsa@kernel.org [ Rename thread_map_data_event to thread_map_event_entry ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
5f3339d2 |
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25-Oct-2015 |
Jiri Olsa <jolsa@kernel.org> |
perf thread_map: Add thread_map user level event Adding the thread_map event to pass/store thread maps as data in the pipe/perf.data. Storing the thread ID along with the standard comm[16] thread name string. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Kan Liang <kan.liang@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1445784728-21732-4-git-send-email-jolsa@kernel.org [ Renamed thread_map_data_event to thread_map_event_entry ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
38349665 |
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06-Oct-2015 |
Andrzej Hajda <a.hajda@samsung.com> |
perf tools: Fix handling read result using a signed variable The function can return negative value, assigning it to unsigned variable can cause memory corruption. The problem has been detected using proposed semantic patch scripts/coccinelle/tests/unsigned_lesser_than_zero.cocci [1]. [1]: http://permalink.gmane.org/gmane.linux.kernel/2038576 Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Cc: Marek Szyprowski <m.szyprowski@samsung.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: kernel-janitors@vger.kernel.org Link: http://lkml.kernel.org/r/1444122017-16856-1-git-send-email-a.hajda@samsung.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
a5e813c6 |
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30-Sep-2015 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf machine: Add method for common kernel_map(FUNCTION) operation And it is also a step in the direction of killing the separation of data and text maps in map_groups. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-rrds86kb3wx5wk8v38v56gw8@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
77e65977 |
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30-Sep-2015 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf machine: Use machine__kernel_map() thoroughly In places where we were using its open coded equivalent. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-khkdugcdoqy3tkszm3jdxgbe@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
ab9c2bdc |
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23-Sep-2015 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Use __map__is_kernel() when synthesizing kernel module mmap records Equivalent and removes one more case of using dso->kernel. # perf record -a usleep 1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.768 MB perf.data (30 samples) ] Before: [root@zoo ~]# perf script --show-task --show-mmap | head -3 swapper 0 [0] 0.0: PERF_RECORD_MMAP -1/0: [0xffffffff81000000(0x1f000000) @ 0xffffffff81000000]: x [kernel.kallsyms]_text swapper 0 [0] 0.0: PERF_RECORD_MMAP -1/0: [0xffffffffa0000000(0xa000) @ 0]: x /lib/modules/4.3.0-rc1+/kernel/drivers/acpi/video.ko swapper 0 [0] 0.0: PERF_RECORD_MMAP -1/0: [0xffffffffa000a000(0x5000) @ 0]: x /lib/modules/4.3.0-rc1+/kernel/drivers/i2c/algos/i2c-algo-bit.ko # # perf script --show-task --show-mmap | head -3 swapper 0 [0] 0.0: PERF_RECORD_MMAP -1/0: [0xffffffff81000000(0x1f000000) @ 0xffffffff81000000]: x [kernel.kallsyms]_text swapper 0 [0] 0.0: PERF_RECORD_MMAP -1/0: [0xffffffffa0000000(0xa000) @ 0]: x /lib/modules/4.3.0-rc1+/kernel/drivers/acpi/video.ko swapper 0 [0] 0.0: PERF_RECORD_MMAP -1/0: [0xffffffffa000a000(0x5000) @ 0]: x /lib/modules/4.3.0-rc1+/kernel/drivers/i2c/algos/i2c-algo-bit.ko # Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Stephane Eranian <eranian@google.com> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-b65xe578dwq22mzmmj5y94wr@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
e803cf97 |
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21-Sep-2015 |
Namhyung Kim <namhyung@kernel.org> |
perf record: Synthesize COMM event for a command line workload When perf creates a new child to profile, the events are enabled on exec(). And in this case, it doesn't synthesize any event for the child since they'll be generated during exec(). But there's an window between the enabling and the event generation. It used to be overcome since samples are only in kernel (so we always have the map) and the comm is overridden by a later COMM event. However it won't work if events are processed and displayed before the COMM event overrides like in 'perf script'. This leads to those early samples (like native_write_msr_safe) not having a comm but pid (like ':15328'). So it needs to synthesize COMM event for the child explicitly before enabling so that it can have a correct comm. But at this time, the comm will be "perf" since it's not exec-ed yet. Committer note: Before this patch: # perf record usleep 1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.017 MB perf.data (7 samples) ] # perf script --show-task-events :4429 4429 27909.079372: 1 cycles: ffffffff8105f45a native_write_msr_safe (/lib/modules/4. :4429 4429 27909.079375: 1 cycles: ffffffff8105f45a native_write_msr_safe (/lib/modules/4. :4429 4429 27909.079376: 10 cycles: ffffffff8105f45a native_write_msr_safe (/lib/modules/4. :4429 4429 27909.079377: 223 cycles: ffffffff8105f45a native_write_msr_safe (/lib/modules/4. :4429 4429 27909.079378: 6571 cycles: ffffffff8105f45a native_write_msr_safe (/lib/modules/4. usleep 4429 27909.079380: PERF_RECORD_COMM exec: usleep:4429/4429 usleep 4429 27909.079381: 185403 cycles: ffffffff810a72d3 flush_signal_handlers (/lib/modules/4. usleep 4429 27909.079444: 2241110 cycles: 7fc575355be3 _dl_start (/usr/lib64/ld-2.20.so) usleep 4429 27909.079875: PERF_RECORD_EXIT(4429:4429):(4429:4429) After: # perf record usleep 1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.017 MB perf.data (7 samples) ] # perf script --show-task perf 0 0.000000: PERF_RECORD_COMM: perf:8446/8446 perf 8446 30154.038944: 1 cycles: ffffffff8105f45a native_write_msr_safe (/lib/modules/4. perf 8446 30154.038948: 1 cycles: ffffffff8105f45a native_write_msr_safe (/lib/modules/4. perf 8446 30154.038949: 9 cycles: ffffffff8105f45a native_write_msr_safe (/lib/modules/4. perf 8446 30154.038950: 230 cycles: ffffffff8105f45a native_write_msr_safe (/lib/modules/4. perf 8446 30154.038951: 6772 cycles: ffffffff8105f45a native_write_msr_safe (/lib/modules/4. usleep 8446 30154.038952: PERF_RECORD_COMM exec: usleep:8446/8446 usleep 8446 30154.038954: 196923 cycles: ffffffff81766440 _raw_spin_lock (/lib/modules/4.3.0-rc1 usleep 8446 30154.039021: 2292130 cycles: 7f609a173dc4 memcpy (/usr/lib64/ld-2.20.so) usleep 8446 30154.039349: PERF_RECORD_EXIT(8446:8446):(8446:8446) # Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1442881495-2928-1-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
0c4c4deb |
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04-Sep-2015 |
Kan Liang <kan.liang@intel.com> |
perf tools: Add processor socket info to hist_entry and addr_location This information will come from perf.data files of from the current system, cached when needed, such as when the 'socket' sort order gets introduced. Signed-off-by: Kan Liang <kan.liang@intel.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Stephane Eranian <eranian@google.com> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/1441377946-44429-1-git-send-email-kan.liang@intel.com [ Don't blindly use env->cpu[al.cpu].socket_id & use machine->env, fixes by Jiri & Arnaldo ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
0286039f |
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20-Jul-2015 |
Adrian Hunter <adrian.hunter@intel.com> |
perf tools: Add new PERF_RECORD_SWITCH event Support processing of PERF_RECORD_SWITCH events and PERF_RECORD_SWITCH_CPU_WIDE events. There is a single tools callback for them both so that the tool must check the event type before using the extra members in PERF_RECORD_SWITCH_CPU_WIDE. There is still no way to select the events, though. That is added in a subsequest patch. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Tested-by: Jiri Olsa <jolsa@redhat.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Pawel Moll <pawel.moll@arm.com> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1437471846-26995-3-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
e13798c7 |
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22-Jun-2015 |
Jiri Olsa <jolsa@kernel.org> |
perf thread_map: Don't access the array entries directly Instead provide a method to set the array entries, and another to access the contents. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1435012588-9007-2-git-send-email-jolsa@kernel.org [ Split providing the set/get accessors from transforming the entries structs ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
9d9cad76 |
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17-Jun-2015 |
Kan Liang <kan.liang@intel.com> |
perf tools: Configurable per thread proc map processing time out The time out to limit the individual proc map processing was hard code to 500ms. This patch introduce a new option --proc-map-timeout to make the time limit configurable. Signed-off-by: Kan Liang <kan.liang@intel.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Ying Huang <ying.huang@intel.com> Link: http://lkml.kernel.org/r/1434549071-25611-2-git-send-email-kan.liang@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
930e6fcd |
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17-Jun-2015 |
Kan Liang <kan.liang@intel.com> |
perf tools: Add time out to force stop proc map processing System wide sampling like 'perf top' or 'perf record -a' read all threads /proc/xxx/maps before sampling. If there are any threads which generating a keeping growing huge maps, perf will do infinite loop during synthesizing. Nothing will be sampled. This patch fixes this issue by adding per-thread timeout to force stop this kind of endless proc map processing. PERF_RECORD_MISC_PROC_MAP_PARSE_TIME_OUT is introduced to indicate that the mmap record are truncated by time out. User will get warning notification when truncated mmap records are detected. Reported-by: Ying Huang <ying.huang@intel.com> Signed-off-by: Kan Liang <kan.liang@intel.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Ying Huang <ying.huang@intel.com> Link: http://lkml.kernel.org/r/1434549071-25611-1-git-send-email-kan.liang@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
c4937a91 |
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10-May-2015 |
Kan Liang <kan.liang@intel.com> |
perf tools: handle PERF_RECORD_LOST_SAMPLES This patch modifies the perf tool to handle the new RECORD type, PERF_RECORD_LOST_SAMPLES. The number of lost-sample events is stored in .nr_events[PERF_RECORD_LOST_SAMPLES]. The exact number of samples which the kernel dropped is stored in total_lost_samples. When the percentage of dropped samples is greater than 5%, a warning is printed. Here are some examples: Eg 1, Recording different frequently-occurring events is safe with the patch. Only a very low drop rate is associated with such actions. $ perf record -e '{cycles:p,instructions:p}' -c 20003 --no-time ~/tchain ~/tchain $ perf report -D | tail SAMPLE events: 120243 MMAP2 events: 5 LOST_SAMPLES events: 24 FINISHED_ROUND events: 15 cycles:p stats: TOTAL events: 59348 SAMPLE events: 59348 instructions:p stats: TOTAL events: 60895 SAMPLE events: 60895 $ perf report --stdio --group # To display the perf.data header info, please use --header/--header-only options. # # # Total Lost Samples: 24 # # Samples: 120K of event 'anon group { cycles:p, instructions:p }' # Event count (approx.): 24048600000 # # Overhead Command Shared Object Symbol # ................ ........... ................ .................................. # 99.74% 99.86% tchain_edit tchain_edit [.] f3 0.09% 0.02% tchain_edit tchain_edit [.] f2 0.04% 0.00% tchain_edit [kernel.vmlinux] [k] ixgbe_read_reg Eg 2, Recording the same thing multiple times can lead to high drop rate, but it is not a useful configuration. $ perf record -e '{cycles:p,cycles:p}' -c 20003 --no-time ~/tchain Warning: Processed 600592 samples and lost 99.73% samples! [perf record: Woken up 148 times to write data] [perf record: Captured and wrote 36.922 MB perf.data (1206322 samples)] [perf record: Woken up 1 times to write data] [perf record: Captured and wrote 0.121 MB perf.data (1629 samples)] Signed-off-by: Kan Liang <kan.liang@intel.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: acme@infradead.org Cc: eranian@google.com Link: http://lkml.kernel.org/r/1431285195-14269-9-git-send-email-kan.liang@intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
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#
1eee78ae |
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21-May-2015 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Introduce struct maps That for now has the maps rbtree and the list for the dead maps, that may be still referenced from some hist_entry, etc. This paves the way for protecting the rbtree with a lock, then refcount the maps and finally remove the removed_maps list, as it'll not ne anymore needed. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-fl0fa6142pj8khj97fow3uw0@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
4bb7123d |
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22-May-2015 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Use maps__first()/map__next() In a few more remaining places, for consistency. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-c2n7slwtto29wndfttdrhfrx@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
b91fc39f |
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06-Apr-2015 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf machine: Protect the machine->threads with a rwlock In addition to using refcounts for the struct thread lifetime management, we need to protect access to machine->threads from concurrent access. That happens in 'perf top', where a thread processes events, inserting and deleting entries from that rb_tree while another thread decays hist_entries, that end up dropping references and ultimately deleting threads from the rb_tree and releasing its resources when no further hist_entry (or other data structures, like in 'perf sched') references it. So the rule is the same for refcounts + protected trees in the kernel, get the tree lock, find object, bump the refcount, drop the tree lock, return, use object, drop the refcount if no more use of it is needed, keep it if storing it in some other data structure, drop when releasing that data structure. I.e. pair "t = machine__find(new)_thread()" with a "thread__put(t)", and "perf_event__preprocess_sample(&al)" with "addr_location__put(&al)". The addr_location__put() one is because as we return references to several data structures, we may end up adding more reference counting for the other data structures and then we'll drop it at addr_location__put() time. Acked-by: David Ahern <dsahern@gmail.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: Don Zickus <dzickus@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-bs9rt4n0jw3hi9f3zxyy3xln@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
0ad21f68 |
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30-Apr-2015 |
Adrian Hunter <adrian.hunter@intel.com> |
perf tools: Add support for PERF_RECORD_ITRACE_START Add support for the PERF_RECORD_ITRACE_START event type. This event can be used to determine the pid and tid that are running when Instruction Tracing starts. Generally that information would come from a sched_switch event but, at the start, no sched_switch events may yet have been recorded. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1430404667-10593-8-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
4a96f7a0 |
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30-Apr-2015 |
Adrian Hunter <adrian.hunter@intel.com> |
perf tools: Add support for PERF_RECORD_AUX Add support for the PERF_RECORD_AUX event type. PERF_RECORD_AUX is a new kernel event that records when new data lands in the AUX buffer. Currently it is assumed that AUX data follows the same ring buffer conventions used by the perf events buffer, and consequently the AUX event is not processed during recording. It is processed during session processing so that the information in the 'flags' member is made available. The format of PERF_RECORD_AUX is outlined in the linux/perf_events.h header file. The 'flags' are also enumerated. Intel PT and Intel BTS use the flag named PERF_AUX_FLAG_TRUNCATED to determine if data has been lost because the buffer became full as perf was not able to empty it fast enough. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1430404667-10593-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
e9bf54d2 |
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09-Apr-2015 |
Adrian Hunter <adrian.hunter@intel.com> |
perf tools: Add a user event for AUX area tracing errors Errors encountered when decoding an AUX area trace need to be reported to the user. However the "user" might be a script or another tool, so provide a new user event to capture those errors. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1428594864-29309-8-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
a16ac023 |
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09-Apr-2015 |
Adrian Hunter <adrian.hunter@intel.com> |
perf tools: Add user events for AUX area tracing Add two user events for AUX area tracing. PERF_RECORD_AUXTRACE_INFO contains metadata, consisting primarily the type of the AUX area tracing data plus some amount of architecture-specific information. There should be only one PERF_RECORD_AUXTRACE_INFO event. PERF_RECORD_AUXTRACE identifies AUX area tracing data copied from the mmapped AUX area tracing region. The actual data is not part of the event but immediately follows it. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1428594864-29309-4-git-send-email-adrian.hunter@intel.com [ s/MIN/min/g and use cast to fix up wrt -Werror=sign-compare till we adopt min_t() ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
d998b732 |
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08-Apr-2015 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Fix error path to do closedir() when synthesizing threads When traversing /proc to synthesize the PERF_RECORD_FORK et al events we were bailing out on errors without calling closedir(), fix it. Reported-by: David Ahern <dsahern@gmail.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: Don Zickus <dzickus@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-vxtp593rfztgbi8noy0m967p@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
7764a385 |
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08-Apr-2015 |
David Ahern <david.ahern@oracle.com> |
perf tools: Fix synthesizing fork_event.ppid for non-main thread Commit ca6c41c59b9 sets the ppid based on what is read from the /proc/pid/status file when synthesizing fork events. This is correct thing to do for new processes but not threads of a process. Fix ppid for threads to be the main thread when synthesizing fork events (ie., assume main thread spawned all sub-threads in a process). Reported-by: Arnaldo Carvalho de Melo <arnaldo.melo@gmail.com> Signed-off-by: David Ahern <david.ahern@oracle.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Acked-by: Don Zickus <dzickus@redhat.com> Link: http://lkml.kernel.org/r/1428598107-178999-1-git-send-email-david.ahern@oracle.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
ca6c41c5 |
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30-Mar-2015 |
David Ahern <dsahern@gmail.com> |
perf tools: Fix ppid for synthesized fork events 363b785f38 added synthesized fork events and set a thread's parent id to itself. Since we are already processing /proc/<pid>/status the ppid can be determined properly. Make it so. Signed-off-by: David Ahern <dsahern@gmail.com> Acked-by: Don Zickus <dzickus@redhat.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Joe Mario <jmario@redhat.com> Link: http://lkml.kernel.org/r/1427747758-18510-2-git-send-email-dsahern@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
5aa0b030 |
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30-Mar-2015 |
David Ahern <dsahern@gmail.com> |
perf tools: Refactor comm/tgid lookup Rather than parsing /proc/pid/status file one line at a time, read it into a buffer in one shot and search for all strings in one pass. tgid conversion also simplified -- removing the isspace walk. As noted by Arnaldo those are not needed for atoi == strtol calls. Signed-off-by: David Ahern <dsahern@gmail.com> Acked-by: Don Zickus <dzickus@redhat.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Joe Mario <jmario@redhat.com> Link: http://lkml.kernel.org/r/1427747758-18510-1-git-send-email-dsahern@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
4aa5f4f7 |
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27-Feb-2015 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Fix FORK after COMM when synthesizing records for pre-existing threads In this commit: commit 363b785f3805a2632eb09a8b430842461c21a640 Author: Don Zickus <dzickus@redhat.com> Date: Fri Mar 14 10:43:44 2014 -0400 perf tools: Speed up thread map generation We ended up emitting PERF_RECORD_FORK events after their corresponding PERF_RECORD_COMM, so the code below will remove the "existing thread" and then recreates it, unnecessarily: [root@ssdandy ~]# perf probe -x ~/bin/perf -L machine__process_fork_event <machine__process_fork_event@/home/acme/git/linux/tools/perf/util/machine.c:0> 0 int machine__process_fork_event(struct machine *machine, union perf_event *event, struct perf_sample *sample) 2 { 3 struct thread *thread = machine__find_thread(machine, event->fork.pid, event->fork.tid); 6 struct thread *parent = machine__findnew_thread(machine, event->fork.ppid, event->fork.ptid); /* if a thread currently exists for the thread id remove it */ if (thread != NULL) 12 machine__remove_thread(machine, thread); 14 thread = machine__findnew_thread(machine, event->fork.pid, event->fork.tid); 16 if (dump_trace) 17 perf_event__fprintf_task(event, stdout); 19 if (thread == NULL || parent == NULL || 20 thread__fork(thread, parent, sample->time) < 0) { 21 dump_printf("problem processing PERF_RECORD_FORK, skipping event.\n"); 22 return -1; } 25 return 0; 26 } [root@ssdandy ~]# perf probe -x ~/bin/perf fork_after_comm=machine__process_fork_event:12 Added new event: probe_perf:fork_after_comm (on machine__process_fork_event:12 in /home/acme/bin/perf) You can now use it in all perf tools, such as: perf record -e probe_perf:fork_after_comm -aR sleep 1 [root@ssdandy ~]# [root@ssdandy ~]# perf record -g -e probe_perf:* trace -o /tmp/bla ^C[ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.021 MB perf.data (30 samples) ] Terminated [root@ssdandy ~]# [root@ssdandy ~]# perf report --no-children --show-total-period --stdio # To display the perf.data header info, please use --header/--header-only options. # # Samples: 30 of event 'probe_perf:fork_after_comm' # Event count (approx.): 30 # # Overhead Period Command Shared Object Symbol # ........ ............ ....... ............. ............................... # 100.00% 30 trace trace [.] machine__process_fork_event | ---machine__process_fork_event __event__synthesize_thread.part.2 perf_event__synthesize_threads cmd_trace main __libc_start_main [root@ssdandy ~]# And Looking at 'perf report -D' output we see it: 0 0 0x8698 [0x30]: PERF_RECORD_COMM: auditd:703/707 0 0 0x86c8 [0x38]: PERF_RECORD_FORK(703:707):(703:703) Fix it by more closely mimicking how the kernel generates those records when a new fork happens, i.e. first a PERF_RECORD_FORK, then a PERF_RECORD_COMM. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-h0emvymi2t3mw8dlqd6d6z73@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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50674065 |
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24-Feb-2015 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Print the thread's tid on PERF_RECORD_COMM events when -D is asked Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-fmto8ft6jrtwz09dxn5d4z8w@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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3c659eed |
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27-Oct-2014 |
Adrian Hunter <adrian.hunter@intel.com> |
perf tools: Add id index Add an index of the event identifiers, in preparation for Intel PT. The event id (also called the sample id) is a unique number allocated by the kernel to the event created by perf_event_open(). Events can include the event id by having a sample type including PERF_SAMPLE_ID or PERF_SAMPLE_IDENTIFIER. Currently the main use of the event id is to match an event back to the evsel to which it belongs i.e. perf_evlist__id2evsel() The purpose of this patch is to make it possible to match an event back to the mmap from which it was read. The reason that is useful is because the mmap represents a time-ordered context (either for a cpu or for a thread). Intel PT decodes trace information on that basis. In full-trace mode, that information can be recorded when the Intel PT trace is read, but in sample-mode the Intel PT trace data is embedded in a sample and it is in that case that the "id index" is needed. So the mmaps are numbered (idx) and the cpu and tid recorded against the id by perf_evlist__set_sid_idx() which is called by perf_evlist__mmap_per_evsel(). That information is recorded on the perf.data file in the new "id index". idx, cpu and tid are added to struct perf_sample_id (which is the node of evlist's hash table to match ids to evsels). The information can be retrieved using perf_evlist__id2sid(). Note however this all depends on having a sample type including PERF_SAMPLE_ID or PERF_SAMPLE_IDENTIFIER, otherwise ids are not recorded. The "id index" is a synthesized event record which will be created when Intel PT sampling is used by calling perf_event__synthesize_id_index(). Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1414417770-18602-2-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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bb871a9c |
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22-Oct-2014 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: A thread's machine can be found via thread->mg->machine So stop passing both machine and thread to several thread methods, reducing function signature length. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jean Pihet <jean.pihet@linaro.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-ckcy19dcp1jfkmdihdjcqdn1@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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a5c2a4c9 |
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24-Sep-2014 |
Andi Kleen <ak@linux.intel.com> |
perf tools: Fix perf record as non root with kptr_restrict == 1 Currently perf record always errors out when you run it as non-root with kptr_restrict == 1, which is often the default. Make it only warn instead and fix the kernel resolve code to not segfault later. Profiling works still fine, except kernel symbols are not resolved. Signed-off-by: Andi Kleen <ak@linux.intel.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1411594794-7229-1-git-send-email-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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fbe2af45 |
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15-Aug-2014 |
Adrian Hunter <adrian.hunter@intel.com> |
perf tools: Add machine__kernel_ip() Add a function to determine if an address is in the kernel. This is based on the kernel function kernel_ip(). Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1408129739-17368-5-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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9b0d2d87 |
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22-Jul-2014 |
Adrian Hunter <adrian.hunter@intel.com> |
perf tools: Expose 'addr' functions so they can be reused Move some functions and functionality related to the use of 'addr' out of builtin-script so they can be reused. The moved functions are: is_bts_event() and sample_addr_correlates_sym() and a new function perf_event__preprocess_sample_addr() is created from bits of print_sample_addr(). perf_event__preprocess_sample_addr() is the equivalent of perf_event__preprocess_sample() but for 'addr' instead of 'ip'. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1406035081-14301-31-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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1f2a7069 |
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14-Jul-2014 |
Adrian Hunter <adrian.hunter@intel.com> |
perf tools: Fix missing kernel map load thread__find_addr_map() falls back to trying the kernel maps if the address is negative and is not found in userspace maps. As commented in the code, the kernel maps must be "loaded" before use. This patch ensures that happens under the fallback condition also. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1405332185-4050-8-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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022c50d0 |
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14-Jul-2014 |
Adrian Hunter <adrian.hunter@intel.com> |
perf script: Display PERF_RECORD_MISC_COMM_EXEC flag Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1405332185-4050-4-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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a5a5ba72 |
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30-May-2014 |
Don Zickus <dzickus@redhat.com> |
Revert "perf: Disable PERF_RECORD_MMAP2 support" This reverts commit 3090ffb5a2515990182f3f55b0688a7817325488. Re-enable the mmap2 interface as we will have a user soon. Since things have changed since perf disabled mmap2, small tweaks to the revert had to be done: o commit 9d4ecc88 forced (n!=8) to become (n<7) o a new libunwind test needed updating to use mmap2 interface Signed-off-by: Don Zickus <dzickus@redhat.com> Link: http://lkml.kernel.org/r/1401461382-209586-1-git-send-email-dzickus@redhat.com Signed-off-by: Jiri Olsa <jolsa@kernel.org>
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7ef80703 |
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19-May-2014 |
Don Zickus <dzickus@redhat.com> |
perf tools: Update mmap2 interface with protection and flag bits The kernel piece passes more info now. Update the perf tool to reflect that and adjust the synthesized maps to play along. Signed-off-by: Don Zickus <dzickus@redhat.com> Link: http://lkml.kernel.org/r/1400526833-141779-4-git-send-email-dzickus@redhat.com Signed-off-by: Jiri Olsa <jolsa@kernel.org>
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13ce34df |
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11-May-2014 |
Namhyung Kim <namhyung@kernel.org> |
perf tools: Use tid for finding thread I believe that passing pid (instead of tid) as the 3rd arg of the machine__find*_thread() was to find a main thread so that it can search proper map group for symbols. However with the map sharing patch applied, it now can do it in any thread. It fixes a bug when each thread has different name, it only reports a main thread for samples in other threads. Cc: Adrian Hunter <adrian.hunter@intel.com> Acked-by: David Ahern <dsahern@gmail.com> Acked-by: Stephane Eranian <eranian@google.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Link: http://lkml.kernel.org/r/1399856202-26221-1-git-send-email-namhyung@kernel.org Signed-off-by: Jiri Olsa <jolsa@kernel.org>
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93d5731d |
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21-Mar-2014 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Allocate thread map_groups's dynamically Moving towards sharing map groups within a process threads. Because of this we need the map groups to be dynamically allocated. No other functional change is intended in here. Based on a patch by Jiri Olsa, but this time _just_ making the conversion from statically allocating thread->mg to turning it into a pointer and instead of initializing it at thread's constructor, introduce a constructor/destructor for the map_groups class and call at thread creation time. Later we will introduce the get/put methods when we move to sharing those map_groups, when the get/put refcounting semantics will be needed. Signed-off-by: Arnaldo Carvalho de Melo <acme@kernel.org> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1397490723-1992-3-git-send-email-jolsa@redhat.com Signed-off-by: Jiri Olsa <jolsa@kernel.org>
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574799bf |
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16-Mar-2014 |
Namhyung Kim <namhyung@kernel.org> |
perf tools: Fix memory leak when synthesizing thread records Checking default guest machine should be done before allocating event structures otherwise it'll leak memory. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: Don Zickus <dzickus@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Joe Mario <jmario@redhat.com> Link: http://lkml.kernel.org/r/87ob15tx6a.fsf@sejong.aot.lge.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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466fa764 |
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17-Mar-2014 |
Namhyung Kim <namhyung@kernel.org> |
perf symbols: Apply all filters to an addr_location Instead of bailing out as soon as we find a filter that applies, go on checking all of them so that we can zoom in/out filters. We also need to make sure we only update al->filtered after thread__find_addr_map(), because there is where al->filtered gets initialized to zero. This will increase the cost of processing when all we don't need this toggling, but will provide flexibility for the TUI and GTK+ interfaces, that will incur in creating the hist_entries just once. Signed-off-by: Namhyung Kim <namhyung.kim@lge.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung.kim@lge.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/n/tip-fhv9lhzdjxgp9w3w3668lsfw@git.kernel.org [ yanked this out of a previous patch ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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b3cef7f6 |
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17-Mar-2014 |
Namhyung Kim <namhyung@kernel.org> |
perf symbols: Record the reason for filtering an address_location By turning the addr_location->filtered member from a boolean to a u8 bitmap, reusing (and extending) the hist_filter enum for that. This patch doesn't change the logic at all, as it keeps the meaning of al->filtered !0 to mean that the entry _was_ filtered, so no change in how this value is interpreted needs to be done at this point. This will be soon used in upcoming patches. Signed-off-by: Namhyung Kim <namhyung.kim@lge.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung.kim@lge.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/n/tip-89hmfgtr9t22sky1lyg7nw7l@git.kernel.org [ yanked this out of a previous patch ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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363b785f |
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14-Mar-2014 |
Don Zickus <dzickus@redhat.com> |
perf tools: Speed up thread map generation When trying to capture perf data on a system running spejbb2013, perf hung for about 15 minutes. This is because it took that long to gather about 10,000 thread maps and process them. I don't think a user wants to wait that long. Instead, recognize that thread maps are roughly equivalent to pid maps and just quickly copy those instead. To do this, I synthesize 'fork' events, this eventually calls thread__fork() and copies the maps over. The overhead goes from 15 minutes down to about a few seconds. -- V2: based on Jiri's comments, moved malloc up a level and made sure the memory was freed Signed-off-by: Don Zickus <dzickus@redhat.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Joe Mario <jmario@redhat.com> Link: http://lkml.kernel.org/r/1394808224-113774-1-git-send-email-dzickus@redhat.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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bfd66cc7 |
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26-Feb-2014 |
Don Zickus <dzickus@redhat.com> |
perf tools: Fix synthesizing mmaps for threads Currently if a process creates a bunch of threads using pthread_create and then perf is run in system_wide mode, the mmaps for those threads are not captured with a synthesized mmap event. The reason is those threads are not visible when walking the /proc/ directory looking for /proc/<pid>/maps files. Instead they are discovered using the /proc/<pid>/tasks file (which the synthesized comm event uses). This causes problems when a program is trying to map a data address to a tid. Because the tid has no maps, the event is dropped. Changing the program to look up using the pid instead of the tid, finds the correct maps but creates ugly hacks in the program to carry the correct tid around. Fix this by moving the walking of the /proc/<pid>/tasks up a level (out of the comm function) based on Arnaldo's suggestion. Tweaked things a bit to special case the 'full' bit and 'guest' check. Signed-off-by: Don Zickus <dzickus@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1393429527-167840-2-git-send-email-dzickus@redhat.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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0ae617be |
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29-Jan-2014 |
Adrian Hunter <adrian.hunter@intel.com> |
perf record: Get ref_reloc_sym from kernel map Now that ref_reloc_sym is set up when the kernel map is created, 'perf record' does not need to pass the symbol names to perf_event__synthesize_kernel_mmap() which can read the values needed from ref_reloc_sym directly. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Tested-by: Jiri Olsa <jolsa@redhat.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1391004884-10334-6-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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29b596b5 |
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29-Jan-2014 |
Adrian Hunter <adrian.hunter@intel.com> |
perf tools: Add kallsyms__get_function_start() Separate out the logic used to find the start address of the reference symbol used to track kernel relocation. kallsyms__get_function_start() is used in subsequent patches. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Tested-by: Jiri Olsa <jolsa@redhat.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1391004884-10334-3-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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a18382b6 |
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07-Jan-2014 |
Jiri Olsa <jolsa@redhat.com> |
perf tools: Make perf_event__synthesize_mmap_events global Making perf_event__synthesize_mmap_events global, it will be used in following patch from test code. Signed-off-by: Jiri Olsa <jolsa@redhat.com> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jean Pihet <jean.pihet@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1389098853-14466-4-git-send-email-jolsa@redhat.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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c239c25a |
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20-Dec-2013 |
Dongsheng Yang <yangds.fnst@cn.fujitsu.com> |
perf tools: Do not synthesize the treads of default guest. As the default guest is designed to handle orphan kernel symboles with --guestkallsysms and --guestmodules, it has no user space. So we should skip synthesizing threads if machine is default guest. Signed-off-by: Dongsheng Yang <yangds.fnst@cn.fujitsu.com> Cc: David Ahern <dsahern@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung.kim@lge.com> Link: http://lkml.kernel.org/r/e9ddb5dac6f963169657218b12ceb3c2030f54e8.1387572416.git.yangds.fnst@cn.fujitsu.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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f5db57c4 |
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20-Dec-2013 |
Dongsheng Yang <yangds.fnst@cn.fujitsu.com> |
perf tools: Use machine->pid for tgid if machine is guest. When we synthesize an comm event, if machine is guest, we should use the pid of machine as the event->comm.pid, rather than tgid of thread. Signed-off-by: Dongsheng Yang <yangds.fnst@cn.fujitsu.com> Cc: David Ahern <dsahern@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung.kim@lge.com> Link: http://lkml.kernel.org/r/22455abe107c618a361e7b667ad0f098f7c9b4a3.1387572416.git.yangds.fnst@cn.fujitsu.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
73547aac |
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20-Dec-2013 |
Dongsheng Yang <yangds.fnst@cn.fujitsu.com> |
perf tools: Set event->header.misc to PERF_RECORD_MISC_GUEST_USER if machine is guest. When we synthesize the mmap events of user space, if machine is guest, we should set the event->header.misc to PERF_RECORD_MISC_GUEST_USER, rather than PERF_RECORD_MISC_USER. Signed-off-by: Dongsheng Yang <yangds.fnst@cn.fujitsu.com> Cc: David Ahern <dsahern@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung.kim@lge.com> Link: http://lkml.kernel.org/r/e6f8ff6505d2db8a4b21bff8e448bb9be0bcff35.1387572416.git.yangds.fnst@cn.fujitsu.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
99563465 |
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20-Dec-2013 |
Dongsheng Yang <yangds.fnst@cn.fujitsu.com> |
perf tools: Find the proc info under machine->root_dir. When we synthesize the threads, we are looking for the infomation under /proc. But it is only for host. This patch look for the path of proc under machine->root_dir, then XXX__synthesize_threads() functions can support guest machines. Signed-off-by: Dongsheng Yang <yangds.fnst@cn.fujitsu.com> Cc: David Ahern <dsahern@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung.kim@lge.com> Link: http://lkml.kernel.org/r/927b937da9177a079abafe4532fa9c9b60b5c4b7.1387572416.git.yangds.fnst@cn.fujitsu.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
fb50bb43 |
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20-Dec-2013 |
Dongsheng Yang <yangds.fnst@cn.fujitsu.com> |
perf tools: Add support for PERF_RECORD_MISC_GUEST_USER in thread__find_addr_map(). This patch remove a TODO in thread__find_addr_map() and add support of PERF_RECORD_MISC_GUEST_USER. Signed-off-by: Dongsheng Yang <yangds.fnst@cn.fujitsu.com> Cc: David Ahern <dsahern@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung.kim@lge.com> Link: http://lkml.kernel.org/r/3dd652201171a19c910b500984c7c3590e77603b.1387572416.git.yangds.fnst@cn.fujitsu.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
cc22e575 |
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19-Dec-2013 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf symbols: Add 'machine' member to struct addr_location The addr_location struct should fully qualify an address, and to do that it should have in it the machine where the thread was found. Thus all functions that receive an addr_location now don't need to also receive a 'machine', those functions just need to access al->machine instead, just like it does with the other parts of an address location: al->thread, al->map, etc. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-o51iiee7vyq4r3k362uvuylg@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
c506c96b |
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11-Dec-2013 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
tools lib symbol: Start carving out symbol parsing routines from perf Eventually this should be useful to other tools/ living utilities. For now don't try to build any .a, just trying the minimal approach of separating existing code into multiple .c files that can then be included wherever they are needed, using whatever build machinery already in place. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@alien8.de> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-pfa8i5zpf4bf9rcccryi0lt3@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
1f3878c1 |
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18-Nov-2013 |
David Ahern <dsahern@gmail.com> |
perf thread: Move comm_list check into function Signed-off-by: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1384806771-2945-5-git-send-email-dsahern@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
9d4ecc88 |
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13-Nov-2013 |
Don Zickus <dzickus@redhat.com> |
perf tools: Synthesize anon MMAP records again When introducing the PERF_RECORD_MMAP2 in: 5c5e854bc760 perf tools: Add attr->mmap2 support A check for the number of entries parsed by sscanf was introduced that assumed all of the 8 fields needed to be correctly parsed so that particular /proc/pid/maps line would be considered synthesizable. That broke anon records synthesizing, as it doesn't have the 'execname' field. Fix it by keeping the sscanf return check, changing it to not require that the 'execname' variable be parsed, so that the preexisting logic can kick in and set it to '//anon'. This should get things like JIT profiling working again. Signed-off-by: Don Zickus <dzickus@redhat.com> Cc: Bill Gray <bgray@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Joe Mario <jmario@redhat.com> Cc: Richard Fowles <rfowles@redhat.com> Cc: Stephane Eranian <eranian@google.com> Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/n/tip-bo4akalno7579shpz29u867j@git.kernel.org [ commit log message is mine, dzickus reported the problem with a patch ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
62605dc50 |
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11-Nov-2013 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf record: Synthesize non-exec MMAP records when --data used When perf_event_attr.mmap_data is set the kernel will generate PERF_RECORD_MMAP events when non-exec (data, SysV mem) mmaps are created, so we need to synthesize from /proc/pid/maps for existing threads, as we do for exec mmaps. Right now just 'perf record' does it, but any other tool that uses perf_event__synthesize_thread(s|map) can request it. Reported-by: Don Zickus <dzickus@redhat.com> Tested-by: Don Zickus <dzickus@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Bill Gray <bgray@redhat.com> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Joe Mario <jmario@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Richard Fowles <rfowles@redhat.com> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-ihwzraikx23ian9txinogvv2@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
316c7136 |
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05-Nov-2013 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Finish the removal of 'self' arguments They convey no information, perhaps I was bitten by some snake at some point, complete the detox by naming the last of those arguments more sensibly. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-u1r0dnjoro08dgztiy2g3t2q@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
162f0bef |
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11-Sep-2013 |
Frederic Weisbecker <fweisbec@gmail.com> |
perf tools: Add time argument on COMM setting This way we can later delimit a lifecycle for the COMM and map a hist to a precise COMM:timeslice couple. PERF_RECORD_COMM and PERF_RECORD_FORK events that don't have PERF_SAMPLE_TIME samples can only send 0 value as a timestamp and thus should overwrite any previous COMM on a given thread because there is no sensible way to keep track of all the comms lifecycles in a thread without time informations. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Tested-by: Jiri Olsa <jolsa@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: David Ahern <dsahern@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-6tyow99vgmmtt9qwr2u2lqd7@git.kernel.org [ Made it cope with PERF_RECORD_MMAP2 ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
b9c5143a |
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11-Sep-2013 |
Frederic Weisbecker <fweisbec@gmail.com> |
perf tools: Use an accessor to read thread comm As the thread comm is going to be implemented by way of a more complicated data structure than just a pointer to a string from the thread struct, convert the readers of comm to use an accessor instead of accessing it directly. The accessor will be later overriden to support an enhanced comm implementation. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Tested-by: Jiri Olsa <jolsa@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: David Ahern <dsahern@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-wr683zwy94hmj4ibogmnv9ce@git.kernel.org [ Rename thread__comm_curr() to thread__comm_str() ] Signed-off-by: Namhyung Kim <namhyung@kernel.org> [ Fixed up some minor const pointer issues ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
2fd869f0 |
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28-Oct-2013 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Fix up /proc/PID/maps parsing When introducing support for MMAP2 we considered more parts of each map representation in /proc/PID/maps, and when disabling it we forgot to reduce the number of expected parsed/assigned entries in the sscanf call, fix it to expect the right number of desired fields, 5. Reported-by: Markus Trippelsdorf <markus@trippelsdorf.de> Based-on-a-patch-by: Markus Trippelsdorf <markus@trippelsdorf.de> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-vrbo1wik997ahjzl1chm3bdm@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
3090ffb5 |
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17-Oct-2013 |
Stephane Eranian <eranian@google.com> |
perf: Disable PERF_RECORD_MMAP2 support For now, we disable the extended MMAP record support (MMAP2). We have identified cases where it would not report the correct mapping information, clone(VM_CLONE) but with separate pids. We will revisit the support once we find a solution for this case. The patch changes the kernel to return EINVAL if attr->mmap2 is set. The patch also modifies the perf tool to use regular PERF_RECORD_MMAP for synthetic events and it also prevents the tool from requesting attr->mmap2 mode because the kernel would reject it. The support will be revisited once the kenrel interface is updated. In V2, we reduce the patch to the strict minimum. In V3, we avoid calling perf_event_open() with mmap2 set because we know it will fail and require fallback retry. Signed-off-by: Stephane Eranian <eranian@google.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20131017173215.GA8820@quad Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
5c5e854b |
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20-Aug-2013 |
Stephane Eranian <eranian@google.com> |
perf tools: Add attr->mmap2 support This patch adds support for the new PERF_RECORD_MMAP2 record type exposed by the kernel. This is an extended PERF_RECORD_MMAP record. It adds for each file-backed mapping the device major, minor number and the inode number and generation. This triplet uniquely identifies the source of a file-backed mapping. It can be used to detect identical virtual mappings between processes, for instance. The patch will prefer MMAP2 over MMAP. Signed-off-by: Stephane Eranian <eranian@google.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung.kim@lge.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1377079825-19057-3-git-send-email-eranian@google.com [ Cope with 314add6 "Change machine__findnew_thread() to set thread pid", fix 'perf test' regression test entry affected, use perf_missing_features.mmap2 to fallback to not using .mmap2 in older kernels, so that new tools can work with kernels where this feature is not present ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
ef89325f |
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27-Aug-2013 |
Adrian Hunter <adrian.hunter@intel.com> |
perf tools: Remove references to struct ip_event The ip_event struct assumes fixed positions for ip, pid and tid. That is no longer true with the addition of PERF_SAMPLE_IDENTIFIER. The information is anyway in struct sample, so use that instead. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1377591794-30553-5-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
314add6b |
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27-Aug-2013 |
Adrian Hunter <adrian.hunter@intel.com> |
perf tools: change machine__findnew_thread() to set thread pid Add a new parameter for 'pid' to machine__findnew_thread(). Change callers to pass 'pid' when it is known. Note that callers sometimes want to find the main thread which has the memory maps. The main thread has tid == pid so the usage in that case is: machine__findnew_thread(machine, pid, pid) whereas the usage to find the specific thread is: machine__findnew_thread(machine, pid, tid) Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: David Ahern <dsahern@gmail.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1377591794-30553-2-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
326f59bf |
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08-Aug-2013 |
Adrian Hunter <adrian.hunter@intel.com> |
perf tools: Remove filter parameter of thread__find_addr_map() Now that the symbol filter is recorded on the machine there is no need to pass it to thread__find_addr_map(). So remove it. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1375961547-30267-9-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
61710bde |
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08-Aug-2013 |
Adrian Hunter <adrian.hunter@intel.com> |
perf tools: Remove filter parameter of thread__find_addr_location() Now that the symbol filter is recorded on the machine there is no need to pass it to thread__find_addr_location(). So remove it. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1375961547-30267-8-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
e44baa3e |
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08-Aug-2013 |
Adrian Hunter <adrian.hunter@intel.com> |
perf tools: Remove filter parameter of perf_event__preprocess_sample() Now that the symbol filter is recorded on the machine there is no need to pass it to perf_event__preprocess_sample(). So remove it. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1375961547-30267-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
5b7ba82a |
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07-Aug-2013 |
Adrian Hunter <adrian.hunter@intel.com> |
perf symbols: Load kernel maps before using In order to use kernel maps to read object code, those maps must be adjusted to map to the dso file offset. Because lazy-initialization is used, that is not done until symbols are loaded. However the maps are first used by thread__find_addr_map() before symbols are loaded. So this patch changes thread__find_addr() to "load" kernel maps before using them. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1375875537-4509-3-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
38051234 |
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04-Jul-2013 |
Adrian Hunter <adrian.hunter@intel.com> |
perf tools: struct thread has a tid not a pid As evident from 'machine__process_fork_event()' and 'machine__process_exit_event()' the 'pid' member of struct thread is actually the tid. Rename 'pid' to 'tid' in struct thread accordingly. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: David Ahern <dsahern@gmail.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1372944040-32690-13-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
0b9e01a4 |
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25-Jan-2013 |
Thomas Jarosch <thomas.jarosch@intra2net.com> |
perf tools: Fix memory leak on error cppcheck reported: [util/event.c:480]: (error) Memory leak: event Signed-off-by: Thomas Jarosch <thomas.jarosch@intra2net.com> Link: http://lkml.kernel.org/r/2717013.8dV0naNhAV@storm Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
60648033 |
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11-Nov-2012 |
Namhyung Kim <namhyung@kernel.org> |
perf tools: Use sscanf for parsing /proc/pid/maps When reading those files to synthesize MMAP events. It makes the code shorter and cleaner. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1352643651-13891-1-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
ba361c92 |
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17-Oct-2012 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Don't stop synthesizing threads when one vanishes The perf_event__synthesize_threads routine synthesizes all the existing threads in the system, because we don't have any kernel facilities to ask for PERF_RECORD_{FORK,MMAP,COMM} for existing threads. It was returning an error as soon as one thread couldn't be synthesized, which is a bit extreme when, for instance, a forkish workload is running, like a kernel compile. Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-i7oas1eodpoer2bx38fwyasv@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
b0a7d1a0 |
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06-Oct-2012 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf machine: Carve up event processing specific from perf_tool The perf_tool vtable expects methods that receive perf_tool and perf_sample entries, but for tools not interested in doing any special processing on non PERF_RECORD_SAMPLE events, like 'perf top', and for those not using perf_session, like 'perf trace', they were using perf_event__process passing tool and sample paramenters that were just not used. Provide 'machine' methods for this purpose and make the perf_event ones use them. Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-ot9cc6mt025o8kbngzckcrx9@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
f62d3f0f |
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06-Oct-2012 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf event: No need to create a thread when handling PERF_RECORD_EXIT When we were processing a PERF_RECORD_EXIT event we first used machine__findnew_thread for both the thread exiting and for its parent, only to use just the thread struct associated with the one exiting, and to just delete it. If it existed, i.e. not created at this very moment in machine__findnew_thread, it will be moved to the machine->dead_threads linked list, because we may have hist_entries pointing to it, but if it was created just do be deleted, it will just sit there with no references at all. Use the new machine__find_thread() method so that if it is not there, we don't create it. As a bonus the parent thread will also not be created at this point. Create process_fork() and process_exit() helpers to use this and make the builtins use it instead of the generic process_task(), ditched by this patch. Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-z7n2y98ebjyrvmytaope4vdl@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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1500b93b |
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07-Sep-2012 |
Feng Tang <feng.tang@intel.com> |
perf symbols: Filter samples with unresolved symbol when "--symbols" option is used Report/top commands support to only handle specific symbols with "--symbols" option, but current code will keep those samples whose symbol can't be resolved, which should actually be filtered. If we run following commands: $perf record -a tree $perf report --symbols intel_idle -n the output will be: Without the patch: ================== 46.27% 156 sshd [unknown] 26.05% 48 swapper [kernel.kallsyms] 17.26% 38 tree libc-2.12.1.so 7.69% 17 tree tree 2.73% 6 tree ld-2.12.1.so With the patch: =============== 100.00% 48 swapper [kernel.kallsyms] Signed-off-by: Feng Tang <feng.tang@intel.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1347007349-3102-2-git-send-email-feng.tang@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
1d037ca1 |
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10-Sep-2012 |
Irina Tirdea <irina.tirdea@gmail.com> |
perf tools: Use __maybe_used for unused variables perf defines both __used and __unused variables to use for marking unused variables. The variable __used is defined to __attribute__((__unused__)), which contradicts the kernel definition to __attribute__((__used__)) for new gcc versions. On Android, __used is also defined in system headers and this leads to warnings like: warning: '__used__' attribute ignored __unused is not defined in the kernel and is not a standard definition. If __unused is included everywhere instead of __used, this leads to conflicts with glibc headers, since glibc has a variables with this name in its headers. The best approach is to use __maybe_unused, the definition used in the kernel for __attribute__((unused)). In this way there is only one definition in perf sources (instead of 2 definitions that point to the same thing: __used and __unused) and it works on both Linux and Android. This patch simply replaces all instances of __used and __unused with __maybe_unused. Signed-off-by: Irina Tirdea <irina.tirdea@intel.com> Acked-by: Pekka Enberg <penberg@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Namhyung Kim <namhyung.kim@lge.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Steven Rostedt <rostedt@goodmis.org> Link: http://lkml.kernel.org/r/1347315303-29906-7-git-send-email-irina.tirdea@intel.com [ committer note: fixed up conflict with a116e05 in builtin-sched.c ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
9ac3e487 |
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10-Sep-2012 |
Irina Tirdea <irina.tirdea@gmail.com> |
perf tools: fix ALIGN redefinition in system headers On some systems (e.g. Android), ALIGN is defined in system headers as ALIGN(p). The definition of ALIGN used in perf takes 2 parameters: ALIGN(x,a). This leads to redefinition conflicts. Redefinition error on Android: In file included from util/include/linux/list.h:1:0, from util/callchain.h:5, from util/hist.h:6, from util/session.h:4, from util/build-id.h:4, from util/annotate.c:11: util/include/linux/kernel.h:11:0: error: "ALIGN" redefined [-Werror] bionic/libc/include/sys/param.h:38:0: note: this is the location of the previous definition Conflics with system defined ALIGN in Android: util/event.c: In function 'perf_event__synthesize_comm': util/event.c:115:32: error: macro "ALIGN" passed 2 arguments, but takes just 1 util/event.c:115:9: error: 'ALIGN' undeclared (first use in this function) util/event.c:115:9: note: each undeclared identifier is reported only once for each function it appears in In order to avoid this redefinition, ALIGN is renamed to PERF_ALIGN. Signed-off-by: Irina Tirdea <irina.tirdea@intel.com> Acked-by: Pekka Enberg <penberg@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Irina Tirdea <irina.tirdea@intel.com> Cc: Namhyung Kim <namhyung.kim@lge.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Steven Rostedt <rostedt@goodmis.org> Link: http://lkml.kernel.org/r/1347315303-29906-5-git-send-email-irina.tirdea@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
1e6d5322 |
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26-Aug-2012 |
David Ahern <dsahern@gmail.com> |
perf tool: handle errors in synthesized event functions Handle error from process callback and propagate back to caller. Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1346005487-62961-3-git-send-email-dsahern@gmail.com Signed-off-by: David Ahern <dsahern@gmail.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
82151520 |
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10-Aug-2012 |
Cody P Schafer <cody@linux.vnet.ibm.com> |
perf symbols: Remove unused 'end' arg in kallsyms parse cb kallsyms__parse() takes a callback that is called on every discovered symbol. As /proc/kallsyms does not supply symbol sizes, the callback was simply called with end=start, faking the symbol size to 1. All of the callbacks (there are 2) used in calls to kallsyms__parse() are _only_ used as callbacks for kallsyms__parse(). Given that kallsyms__parse() lacks real information about what end/length should be, don't make up a length in kallsyms__parse(). Instead have the callbacks handle guessing the length. Also relocate a comment regarding symbol creation to the callback which does symbol creation (kallsyms__parse() is not in general used to create symbols). Signed-off-by: Cody P Schafer <cody@linux.vnet.ibm.com> Cc: David Hansen <dave@linux.vnet.ibm.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Matt Hellsley <matthltc@us.ibm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Link: http://lkml.kernel.org/r/1344637382-22789-3-git-send-email-cody@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
cfbd70c1 |
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24-Feb-2012 |
David Ahern <dsahern@gmail.com> |
perf tools: Ensure comm string is properly terminated If threads in a multi-threaded process have names shorter than the main thread the comm for the named threads is not properly terminated. E.g., for the process 'namedthreads' where each thread is named noploop%d where %d is the thread number: Before: perf script -f comm,tid,ip,sym,dso noploop:4ads 21616 400a49 noploop (/tmp/namedthreads) The 'ads' in the thread comm bleeds over from the process name. After: perf script -f comm,tid,ip,sym,dso noploop:4 21616 400a49 noploop (/tmp/namedthreads) Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1330111898-68071-1-git-send-email-dsahern@gmail.com Signed-off-by: David Ahern <dsahern@gmail.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
bf32c9eb |
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05-Feb-2012 |
Jiri Olsa <jolsa@redhat.com> |
perf tools: Fix prefix matching for kernel maps In some perf ancient versions we used '[kernel.kallsyms._text]' as the name for the kernel map. This got changed with commit: perf: 'perf kvm' tool for monitoring guest performance from host commit a1645ce12adb6c9cc9e19d7695466204e3f017fe Author: Zhang, Yanmin <yanmin_zhang@linux.intel.com> and we started to use following name '[kernel.kallsyms]_text'. This name change is important for the report code dealing with ancient perf data. When processing the kernel map event, we need to recognize the old naming (dont match the last ']') and initialize the kernel map correctly. The subsequent call to maps__set_kallsyms_ref_reloc_sym deals with the superfluous ']' to get correct symbol name. Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1328461865-6127-1-git-send-email-jolsa@redhat.com Signed-off-by: Jiri Olsa <jolsa@redhat.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
f5faf726 |
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22-Dec-2011 |
David Ahern <dsahern@gmail.com> |
perf tools: Look up thread names for system wide profiling This handles multithreaded processes with named threads when doing system wide profiling: the comm for each thread is looked up allowing them to be different from the thread group leader. v2: - fixed sizeof arg to perf_event__get_comm_tgid Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1324578603-12762-3-git-send-email-dsahern@gmail.com Signed-off-by: David Ahern <dsahern@gmail.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
defd8d38 |
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22-Dec-2011 |
David Ahern <dsahern@gmail.com> |
perf tools: Fix comm for processes with named threads perf does not properly handle monitoring of processes with named threads. For example: $ ps -C myapp -L PID LWP TTY TIME CMD 25118 25118 ? 00:00:00 myapp 25118 25119 ? 00:00:00 myapp:worker perf record -e cs -c 1 -fo /tmp/perf.data -p 25118 -- sleep 10 perf report --stdio -i /tmp/perf.data 100.00% myapp:worker [kernel.kallsyms] [k] perf_event_task_sched_out The process name is set to the name of the last thread it finds for the process. The Problem: perf-top and perf-record both create a thread_map of threads to be monitored. That map is used in perf_event__synthesize_thread_map which loops over the entries in thread_map and calls __event__synthesize_thread to generate COMM and MMAP events. __event__synthesize_thread calls perf_event__synthesize_comm which opens /proc/pid/status, reads the name of the task and its thread group id. That's all fine. The problem is that it then reads /proc/pid/task and generates COMM events for each task it finds - but using the name found in /proc/pid/status where pid is the thread of interest. The end result (looping over thread_map + synthesizing comm events for each thread each time) means the name of the last thread processed sets the name for all threads in the process - which is not good for multithreaded processes with named threads. The Fix: perf_event__synthesize_comm has an input argument (full) that decides whether to process task entries for each pid it is passed. It currently never set to 0 (perf_event__synthesize_comm has a single caller and it always passes the value 1). Let's fix that. Add the full input argument to __event__synthesize_thread which passes it to perf_event__synthesize_comm. For thread/process monitoring set full to 0 which means COMM and MMAP events are only generated for the pid passed to it. For system wide monitoring set full to 1 so that COMM events are generated for all threads in a process. Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1324578603-12762-2-git-send-email-dsahern@gmail.com Signed-off-by: David Ahern <dsahern@gmail.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
cb8f4e9a |
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12-Dec-2011 |
Namhyung Kim <namhyung@gmail.com> |
perf events: Tidy up perf_event__preprocess_sample Use local variable 'dso' to reduce typing a bit and rearrange the if condition. Also NULL check of al->map in the condition is not necessary. Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1323703017-6060-7-git-send-email-namhyung@gmail.com Signed-off-by: Namhyung Kim <namhyung@gmail.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
482ad897 |
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02-Dec-2011 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf event: Introduce perf_event__fprintf So that tools like 'perf test' can print the events when in verbose mode, for instance. Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-xnovdqfi25nc48gy6604k7yp@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
45694aa7 |
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28-Nov-2011 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Rename perf_event_ops to perf_tool To better reflect that it became the base class for all tools, that must be in each tool struct and where common stuff will be put. Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-qgpc4msetqlwr8y2k7537cxe@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
743eb868 |
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28-Nov-2011 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Resolve machine earlier and pass it to perf_event_ops Reducing the exposure of perf_session further, so that we can use the classes in cases where no perf.data file is created. Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-stua66dcscsezzrcdugvbmvd@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
d20deb64 |
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25-Nov-2011 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Pass tool context in the the perf_event_ops functions So that we don't need to have that many globals. Next steps will remove the 'session' pointer, that in most cases is not needed. Then we can rename perf_event_ops to 'perf_tool' that better describes this class hierarchy. Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-wp4djox7x6w1i2bab1pt4xxp@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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6a0e55d8 |
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29-Aug-2011 |
Anton Blanchard <anton@samba.org> |
perf symbols: Synthesize anonymous mmap events perf_event__synthesize_mmap_events does not create anonymous mmap events even though the kernel does. As a result an already running application with dynamically created code will not get profiled - all samples end up in the unknown bucket. This patch skips any entries with '[' in the name to avoid adding events for special regions (eg the vsyscall page). All other executable mmaps are assumed to be anonymous and an event is synthesized. Acked-by: Pekka Enberg <penberg@kernel.org> Cc: Eric B Munson <emunson@mgebm.net> Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Pekka Enberg <penberg@cs.helsinki.fi> Link: http://lkml.kernel.org/r/20110830091506.60b51fe8@kryten Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
56722381 |
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02-Jun-2011 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Don't die if sample_{id_all|type} is invalid Fixes two more cases where the python binding would not load: . Not finding die(), which it shouldn't anyway, not good to just stop the world because some particular perf.data file is invalid, just propagate the error to the caller. . Not finding perf_sample_size: fix it by moving it from event.c to evsel, where it belongs, as most cases are moving to operate on an evsel object.o One of the fixed problems: [root@emilia ~]# python >>> import perf Traceback (most recent call last): File "<stdin>", line 1, in <module> ImportError: /home/acme/git/build/perf/python/perf.so: undefined symbol: perf_sample_size >>> [root@emilia ~]# Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-1hkj7b2cvgbfnoizsekjb6c9@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
c2a70653 |
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02-Jun-2011 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Don't die if sample_{id_all|type} is invalid Fixes two more cases where the python binding would not load: . Not finding die(), which it shouldn't anyway, not good to just stop the world because some particular perf.data file is invalid, just propagate the error to the caller. . Not finding perf_sample_size: fix it by moving it from event.c to evsel, where it belongs, as most cases are moving to operate on an evsel object.o One of the fixed problems: [root@emilia ~]# python >>> import perf Traceback (most recent call last): File "<stdin>", line 1, in <module> ImportError: /home/acme/git/build/perf/python/perf.so: undefined symbol: perf_sample_size >>> [root@emilia ~]# Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-1hkj7b2cvgbfnoizsekjb6c9@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
ec80fde7 |
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26-May-2011 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf symbols: Handle /proc/sys/kernel/kptr_restrict Perf uses /proc/modules to figure out where kernel modules are loaded. With the advent of kptr_restrict, non root users get zeroes for all module start addresses. So check if kptr_restrict is non zero and don't generate the syntethic PERF_RECORD_MMAP events for them. Warn the user about it in perf record and in perf report. In perf report the reference relocation symbol being zero means that kptr_restrict was set, thus /proc/kallsyms has only zeroed addresses, so don't use it to fixup symbol addresses when using a valid kallsyms (in the buildid cache) or vmlinux (in the vmlinux path) build-id located automatically or specified by the user. Provide an explanation about it in 'perf report' if kernel samples were taken, checking if a suitable vmlinux or kallsyms was found/specified. Restricted /proc/kallsyms don't go to the buildid cache anymore. Example: [acme@emilia ~]$ perf record -F 100000 sleep 1 WARNING: Kernel address maps (/proc/{kallsyms,modules}) are restricted, check /proc/sys/kernel/kptr_restrict. Samples in kernel functions may not be resolved if a suitable vmlinux file is not found in the buildid cache or in the vmlinux path. Samples in kernel modules won't be resolved at all. If some relocation was applied (e.g. kexec) symbols may be misresolved even with a suitable vmlinux or kallsyms file. [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.005 MB perf.data (~231 samples) ] [acme@emilia ~]$ [acme@emilia ~]$ perf report --stdio Kernel address maps (/proc/{kallsyms,modules}) were restricted, check /proc/sys/kernel/kptr_restrict before running 'perf record'. If some relocation was applied (e.g. kexec) symbols may be misresolved. Samples in kernel modules can't be resolved as well. # Events: 13 cycles # # Overhead Command Shared Object Symbol # ........ ....... ................. ..................... # 20.24% sleep [kernel.kallsyms] [k] page_fault 20.04% sleep [kernel.kallsyms] [k] filemap_fault 19.78% sleep [kernel.kallsyms] [k] __lru_cache_add 19.69% sleep ld-2.12.so [.] memcpy 14.71% sleep [kernel.kallsyms] [k] dput 4.70% sleep [kernel.kallsyms] [k] flush_signal_handlers 0.73% sleep [kernel.kallsyms] [k] perf_event_comm 0.11% sleep [kernel.kallsyms] [k] native_write_msr_safe # # (For a higher level overview, try: perf report --sort comm,dso) # [acme@emilia ~]$ This is because it found a suitable vmlinux (build-id checked) in /lib/modules/2.6.39-rc7+/build/vmlinux (use -v in perf report to see the long file name). If we remove that file from the vmlinux path: [root@emilia ~]# mv /lib/modules/2.6.39-rc7+/build/vmlinux \ /lib/modules/2.6.39-rc7+/build/vmlinux.OFF [acme@emilia ~]$ perf report --stdio [kernel.kallsyms] with build id 57298cdbe0131f6871667ec0eaab4804dcf6f562 not found, continuing without symbols Kernel address maps (/proc/{kallsyms,modules}) were restricted, check /proc/sys/kernel/kptr_restrict before running 'perf record'. As no suitable kallsyms nor vmlinux was found, kernel samples can't be resolved. Samples in kernel modules can't be resolved as well. # Events: 13 cycles # # Overhead Command Shared Object Symbol # ........ ....... ................. ...... # 80.31% sleep [kernel.kallsyms] [k] 0xffffffff8103425a 19.69% sleep ld-2.12.so [.] memcpy # # (For a higher level overview, try: perf report --sort comm,dso) # [acme@emilia ~]$ Reported-by: Stephane Eranian <eranian@google.com> Suggested-by: David Miller <davem@davemloft.net> Cc: Dave Jones <davej@redhat.com> Cc: David Miller <davem@davemloft.net> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Kees Cook <kees.cook@canonical.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> Link: http://lkml.kernel.org/n/tip-mt512joaxxbhhp1odop04yit@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
0f61f3e4 |
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23-May-2011 |
Frederic Weisbecker <fweisbec@gmail.com> |
perf tools: Fix sample type size calculation in 32 bits archs The shift used here to count the number of bits set in the mask doesn't work above the low part for archs that are not 64 bits. Fix the constant used for the shift. This fixes a 32-bit perf top failure reported by Eric Dumazet: Can't parse sample, err = -14 Can't parse sample, err = -14 ... Reported-and-tested-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Eric Dumazet <eric.dumazet@gmail.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Stephane Eranian <eranian@google.com Link: http://lkml.kernel.org/r/1306200686-17317-1-git-send-email-fweisbec@gmail.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
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#
3cb6d154 |
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23-May-2011 |
Frederic Weisbecker <fweisbec@gmail.com> |
perf tools: Fix sample size bit operations What we want is to count the number of bits in the mask, not some other random operation written in the middle of the night. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1306148788-6179-2-git-send-email-fweisbec@gmail.com [ Fixed perf_event__names[] alignment which was nearby and hurting my eyes ... ] Signed-off-by: Ingo Molnar <mingo@elte.hu>
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#
a2854124 |
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21-May-2011 |
Frederic Weisbecker <fweisbec@gmail.com> |
perf tools: Pre-check sample size before parsing Check that the total size of the sample fields having a fixed size do not exceed the one of the whole event. This robustifies the sample parsing. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Stephane Eranian <eranian@google.com>
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#
6c6804fb |
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23-Mar-2011 |
Andrew Lutomirski <luto@mit.edu> |
perf symbols: Fix vsyscall symbol lookup Perf can't currently trace into the vsyscall page. It looks like it was meant to work. Tested on 2.6.38 and today's -git. The bug is easy to reproduce. Compile this: int main() { int i; struct timespec t; for(i = 0; i < 10000000; i++) clock_gettime(CLOCK_MONOTONIC, &t); return 0; } and run it through perf record; perf report. The top entry shows "[unknown]" and you can't zoom in. It looks like there are two issues. The first is a that a test for user mode executing in kernel space is backwards. (That's the first hunk below). The second (I think) is that something's wrong with the code that generates lots of little struct dso objects for different sections -- when it runs on vmlinux it results in bogus long_name values which cause objdump to fail. Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> LPU-Reference: <AANLkTikxSw5+wJZUWNz++nL7mgivCh_Zf=2Kq6=f9Ce_@mail.gmail.com> Signed-off-by: Andy Lutomirski <luto@mit.edu> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
d7603d51 |
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04-Mar-2011 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf hists: Remove needless global col lenght calcs To support multiple events we need to do these calcs per 'struct hists' instance, and it turns out we already do that at: __hists__add_entry hists__inc_nr_entries hists__calc_col_len for all the unfiltered hist_entry instances we stash in the rb tree, so trow away the dead code. Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
401b8e13 |
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09-Feb-2011 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Fix thread_map event synthesizing in top and record Jeff Moyer reported these messages: Warning: ... trying to fall back to cpu-clock-ticks couldn't open /proc/-1/status couldn't open /proc/-1/maps [ls output] [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.008 MB perf.data (~363 samples) ] That lead me and David Ahern to see that something was fishy on the thread synthesizing routines, at least for the case where the workload is started from 'perf record', as -1 is the default for target_tid in 'perf record --tid' parameter, so somehow we were trying to synthesize the PERF_RECORD_MMAP and PERF_RECORD_COMM events for the thread -1, a bug. So I investigated this and noticed that when we introduced support for recording a process and its threads using --pid some bugs were introduced and that the way to fix it was to instead of passing the target_tid to the event synthesizing routines we should better pass the thread_map that has the list of threads for a --pid or just the single thread for a --tid. Checked in the following ways: On a 8-way machine run cyclictest: [root@emilia ~]# perf record cyclictest -a -t -n -p99 -i100 -d50 policy: fifo: loadavg: 0.00 0.13 0.31 2/139 28798 T: 0 (28791) P:99 I:100 C: 25072 Min: 4 Act: 5 Avg: 6 Max: 122 T: 1 (28792) P:98 I:150 C: 16715 Min: 4 Act: 6 Avg: 5 Max: 27 T: 2 (28793) P:97 I:200 C: 12534 Min: 4 Act: 5 Avg: 4 Max: 8 T: 3 (28794) P:96 I:250 C: 10028 Min: 4 Act: 5 Avg: 5 Max: 96 T: 4 (28795) P:95 I:300 C: 8357 Min: 5 Act: 6 Avg: 5 Max: 12 T: 5 (28796) P:94 I:350 C: 7163 Min: 5 Act: 6 Avg: 5 Max: 12 T: 6 (28797) P:93 I:400 C: 6267 Min: 4 Act: 5 Avg: 5 Max: 9 T: 7 (28798) P:92 I:450 C: 5571 Min: 4 Act: 5 Avg: 5 Max: 9 ^C[ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.108 MB perf.data (~4719 samples) ] [root@emilia ~]# This will create one extra thread per CPU: [root@emilia ~]# tuna -t cyclictest -CP thread ctxt_switches pid SCHED_ rtpri affinity voluntary nonvoluntary cmd 28825 OTHER 0 0xff 2169 671 cyclictest 28832 FIFO 93 6 52338 1 cyclictest 28833 FIFO 92 7 46524 1 cyclictest 28826 FIFO 99 0 209360 1 cyclictest 28827 FIFO 98 1 139577 1 cyclictest 28828 FIFO 97 2 104686 0 cyclictest 28829 FIFO 96 3 83751 1 cyclictest 28830 FIFO 95 4 69794 1 cyclictest 28831 FIFO 94 5 59825 1 cyclictest [root@emilia ~]# So we should expect only samples for the above 9 threads when using the --dump-raw-trace|-D perf report switch to look at the column with the tid: [root@emilia ~]# perf report -D | grep RECORD_SAMPLE | cut -d/ -f2 | cut -d: -f1 | sort | uniq -c 629 28825 110 28826 491 28827 308 28828 198 28829 621 28830 225 28831 203 28832 89 28833 [root@emilia ~]# So for workloads started by 'perf record' seems to work, now for existing workloads, just run cyclictest first, without 'perf record': [root@emilia ~]# tuna -t cyclictest -CP thread ctxt_switches pid SCHED_ rtpri affinity voluntary nonvoluntary cmd 28859 OTHER 0 0xff 594 200 cyclictest 28864 FIFO 95 4 16587 1 cyclictest 28865 FIFO 94 5 14219 1 cyclictest 28866 FIFO 93 6 12443 0 cyclictest 28867 FIFO 92 7 11062 1 cyclictest 28860 FIFO 99 0 49779 1 cyclictest 28861 FIFO 98 1 33190 1 cyclictest 28862 FIFO 97 2 24895 1 cyclictest 28863 FIFO 96 3 19918 1 cyclictest [root@emilia ~]# and then later did: [root@emilia ~]# perf record --pid 28859 sleep 3 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.027 MB perf.data (~1195 samples) ] [root@emilia ~]# To collect 3 seconds worth of samples for pid 28859 and its children: [root@emilia ~]# perf report -D | grep RECORD_SAMPLE | cut -d/ -f2 | cut -d: -f1 | sort | uniq -c 15 28859 33 28860 19 28861 13 28862 13 28863 10 28864 11 28865 9 28866 255 28867 [root@emilia ~]# Works, last thing is to check if looking at just one of those threads also works: [root@emilia ~]# perf record --tid 28866 sleep 3 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.006 MB perf.data (~242 samples) ] [root@emilia ~]# perf report -D | grep RECORD_SAMPLE | cut -d/ -f2 | cut -d: -f1 | sort | uniq -c 3 28866 [root@emilia ~]# Works too. Reported-by: Jeff Moyer <jmoyer@redhat.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Jeff Moyer <jmoyer@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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8115d60c |
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29-Jan-2011 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Kill event_t typedef, use 'union perf_event' instead And move the event_t methods to the perf_event__ too. No code changes, just namespace consistency. Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
8d50e5b4 |
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29-Jan-2011 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Rename 'struct sample_data' to 'struct perf_sample' Making the namespace more uniform. Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
ef2bf6d0 |
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29-Jan-2011 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf events: Account PERF_RECORD_LOST events in event__process Right now this function is only used by perf top, that uses PROT_READ only, i.e. overwrite mode, so no PERF_RECORD_LOST events are generated, but don't forget those events. The patch that moved this out of perf top was made so that this routine could be used by 'perf probe' in the uprobes patchset, so perhaps there they need to check for LOST events and warn the user, as will be done in the following patches that will switch 'perf top' to non overwrite mode (mmap with PROT_READ|PROT_WRITE). Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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d0dd74e8 |
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21-Jan-2011 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Move event__parse_sample to evsel.c To avoid linking more stuff in the python binding I'm working on, future csets will make the sample type be taken from the evsel itself, but for that we need to first have one file per cpu and per sample_type, not a single perf.data file. Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
9486aa38 |
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22-Jan-2011 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Fix 64 bit integer format strings Using %L[uxd] has issues in some architectures, like on ppc64. Fix it by making our 64 bit integers typedefs of stdint.h types and using PRI[ux]64 like, for instance, git does. Reported by Denis Kirjanov that provided a patch for one case, I went and changed all cases. Reported-by: Denis Kirjanov <dkirjanov@kernel.org> Tested-by: Denis Kirjanov <dkirjanov@kernel.org> LKML-Reference: <20110120093246.GA8031@hera.kernel.org> Cc: Denis Kirjanov <dkirjanov@kernel.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Pingtian Han <phan@redhat.com> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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3b01a413 |
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21-Dec-2010 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf symbols: Improve kallsyms symbol end addr calculation For kallsyms we don't have the symbol address end, so we do an extra pass and set the symbol end addr as being the start of the next minus one. But this was being done just after we filtered the symbols of a particular type (functions, variables), so the symbol end was sometimes after what it really is. Fixing up symbol end also was falling apart when we have symbol aliases, then the end address of all but the last alias was being set to be before its start. Fix it up by checking for symbol aliases and making the kallsyms__parse routine use the next symbol, whatever its type, as the limit for the previous symbol, passing that end address to the callback. This was detected by the 'perf test' synthetic paranoid regression tests, fix it up so that even that case doesn't mislead us. Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Stephane Eranian <eranian@google.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
3835bc00 |
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06-Dec-2010 |
Thomas Gleixner <tglx@linutronix.de> |
perf event: Prevent unbound event__name array access event__name[] is missing an entry for PERF_RECORD_FINISHED_ROUND, but we happily access the array from the dump code. Make event__name[] static and provide an accessor function, fix up all callers and add the missing string. Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ian Munsie <imunsie@au1.ibm.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <peterz@infradead.org> LKML-Reference: <20101207124550.432593943@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
9c90a61c |
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02-Dec-2010 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Ask for ID PERF_SAMPLE_ info on all PERF_RECORD_ events So that we can use -T == --timestamp, asking for PERF_SAMPLE_TIME: $ perf record -aT $ perf report -D | grep PERF_RECORD_ <SNIP> 3 5951915425 0x47530 [0x58]: PERF_RECORD_SAMPLE(IP, 1): 16811/16811: 0xffffffff8138c1a2 period: 215979 cpu:3 3 5952026879 0x47588 [0x90]: PERF_RECORD_SAMPLE(IP, 1): 16811/16811: 0xffffffff810cb480 period: 215979 cpu:3 3 5952059959 0x47618 [0x38]: PERF_RECORD_FORK(6853:6853):(16811:16811) 3 5952138878 0x47650 [0x78]: PERF_RECORD_SAMPLE(IP, 1): 16811/16811: 0xffffffff811bac35 period: 431478 cpu:3 3 5952375068 0x476c8 [0x30]: PERF_RECORD_COMM: find:6853 3 5952395923 0x476f8 [0x50]: PERF_RECORD_MMAP 6853/6853: [0x400000(0x25000) @ 0]: /usr/bin/find 3 5952413756 0x47748 [0xa0]: PERF_RECORD_SAMPLE(IP, 1): 6853/6853: 0xffffffff810d080f period: 859332 cpu:3 3 5952419837 0x477e8 [0x58]: PERF_RECORD_MMAP 6853/6853: [0x3f44600000(0x21d000) @ 0]: /lib64/ld-2.5.so 3 5952437929 0x47840 [0x48]: PERF_RECORD_MMAP 6853/6853: [0x7fff7e1c9000(0x1000) @ 0x7fff7e1c9000]: [vdso] 3 5952570127 0x47888 [0x58]: PERF_RECORD_MMAP 6853/6853: [0x3f46200000(0x218000) @ 0]: /lib64/libselinux.so.1 3 5952623637 0x478e0 [0x58]: PERF_RECORD_MMAP 6853/6853: [0x3f44a00000(0x356000) @ 0]: /lib64/libc-2.5.so 3 5952675720 0x47938 [0x58]: PERF_RECORD_MMAP 6853/6853: [0x3f44e00000(0x204000) @ 0]: /lib64/libdl-2.5.so 3 5952710080 0x47990 [0x58]: PERF_RECORD_MMAP 6853/6853: [0x3f45a00000(0x246000) @ 0]: /lib64/libsepol.so.1 3 5952847802 0x479e8 [0x58]: PERF_RECORD_SAMPLE(IP, 1): 6853/6853: 0xffffffff813897f0 period: 1142536 cpu:3 <SNIP> First column is the cpu and the second the timestamp. That way we can investigate problems in the event stream. If the new perf binary is run on an older kernel, it will disable this feature automatically. Tested-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Ian Munsie <imunsie@au1.ibm.com> Acked-by: Thomas Gleixner <tglx@linutronix.de> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Ian Munsie <imunsie@au1.ibm.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Stephane Eranian <eranian@google.com> LKML-Reference: <1291318772-30880-5-git-send-email-acme@infradead.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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640c03ce |
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02-Dec-2010 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf session: Parse sample earlier At perf_session__process_event, so that we reduce the number of lines in eache tool sample processing routine that now receives a sample_data pointer already parsed. This will also be useful in the next patch, where we'll allow sample the identity fields in MMAP, FORK, EXIT, etc, when it will be possible to see (cpu, timestamp) just after before every event. Also validate callchains in perf_session__process_event, i.e. as early as possible, and keep a counter of the number of events discarded due to invalid callchains, warning the user about it if it happens. There is an assumption that was kept that all events have the same sample_type, that will be dealt with in the future, when this preexisting limitation will be removed. Tested-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Ian Munsie <imunsie@au1.ibm.com> Acked-by: Thomas Gleixner <tglx@linutronix.de> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Ian Munsie <imunsie@au1.ibm.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Stephane Eranian <eranian@google.com> LKML-Reference: <1291318772-30880-4-git-send-email-acme@infradead.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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9d1faba5 |
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24-Nov-2010 |
Ian Munsie <imunsie@au1.ibm.com> |
perf symbols: Correct final kernel map guesses If a 32bit userspace perf is running on a 64bit kernel, the end of the final map in the kernel would incorrectly be set to 2^32-1 rather than 2^64-1. Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <1290658375-10342-1-git-send-email-imunsie@au1.ibm.com> Signed-off-by: Ian Munsie <imunsie@au1.ibm.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
b83f920e |
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02-Aug-2010 |
Srikar Dronamraju <srikar@linux.vnet.ibm.com> |
perf: expose event__process function The event__process function is useful in processing /proc/<pid>/maps. All of the functions that are called from event__process are defined in util/event.c. Though its defined in builtin-top.c, it could be reused for perf probe for uprobes. Hence moving it to util/event.c and exporting the function. LKML-Reference: <20100802123851.GD22812@linux.vnet.ibm.com> Signed-off-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
b5a63254 |
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02-Aug-2010 |
Dave Martin <dave.martin@linaro.org> |
perf events: Fix mmap offset determination Fix buggy-looking code which unnecessarily adjusts the file offset fields read from /proc/*/maps. This may have gone unnoticed since the offset is usually 0 (and the logic in util/symbol.c may work incorrectly for other offset values). Commiter note: This fixes a bug introduced in 4af8b35, there is no need to shift pgoff twice, the show_map_vma routine in fs/proc/task_mmu.c already converts it from the number of pages to the size in bytes, and that is what appears in /proc/PID/map. Cc: Nicolas Pitre <nicolas.pitre@linaro.org> Cc: Will Deacon <Will.Deacon@arm.com> LKML-Reference: <1280836116-6654-2-git-send-email-dave.martin@linaro.org> Signed-off-by: Dave Martin <dave.martin@linaro.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
d65a458b |
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30-Jul-2010 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Release session and symbol resources on exit So that we reduce the noise when looking for leaks using tools such as valgrind. Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
6e406257 |
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29-Jul-2010 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf symbols: Precisely specify if dso->{long,short}_name should be freed Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
361d1346 |
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27-Jul-2010 |
Dave Martin <dave.martin@linaro.org> |
perf report: Don't abbreviate file paths relative to the cwd This avoids around some problems where the full path is executables and DSOs it needed for finding debug symbols on platforms with separated debug symbol files such as Ubuntu. This is simpler than tracking an extra name for each image. The only impact should be that paths in verbose output from the perf tools become absolute, instead of relative to . LKML-Reference: <new-submission> Signed-off-by: Dave Martin <dave.martin@linaro.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
8a6c5b26 |
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20-Jul-2010 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf sort: Make column width code per hists instance They were globals, and since we support multiple hists and sessions at the same time, it doesn't make sense to calculate those values considereing all symbols in all sessions. Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
720a3aeb |
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17-Jun-2010 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf session: Remove threads from tree on PERF_RECORD_EXIT Move them to a session->dead_threads list just like we do with maps that are replaced, because we may have hist_entries pointing to them. This fixes a bug when inserting maps for a new thread that reused the TID, mixing maps for two different threads, causing an endless loop. The code for insering maps should be made more robust but for .35 this is the minimalistic patch. Reported-by: Ingo Molnar <mingo@elte.hu> Cc: David S. Miller <davem@davemloft.net> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
f60f3593 |
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04-Jun-2010 |
Arun Sharma <aruns@google.com> |
perf report: Implement --sort cpu In a shared multi-core environment, users want to analyze why their program was slow. In particular, if the code ran slower only on certain CPUs due to interference from other programs or kernel threads, the user should be able to notice that. Sample usage: perf record -f -a -- sleep 3 perf report --sort cpu,comm Workload: program is running on 16 CPUs Experiencing interference from an antagonist only on 4 CPUs. Samples: 106218177676 cycles Overhead CPU Command ........ ... ............... 6.25% 2 program 6.24% 6 program 6.24% 11 program 6.24% 5 program 6.24% 9 program 6.24% 10 program 6.23% 15 program 6.23% 7 program 6.23% 3 program 6.23% 14 program 6.22% 1 program 6.20% 13 program 3.17% 12 program 3.15% 8 program 3.14% 0 program 3.13% 4 program 3.11% 4 antagonist 3.11% 0 antagonist 3.10% 8 antagonist 3.07% 12 antagonist Cc: David S. Miller <davem@davemloft.net> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <20100505181612.GA5091@sharma-home.net> Signed-off-by: Arun Sharma <aruns@google.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
41a37e20 |
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04-Jun-2010 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Make event__preprocess_sample parse the sample Simplifying the tools that were using both in sequence and allowing upcoming simplifications, such as Arun's patch to sort by cpus. Cc: David S. Miller <davem@davemloft.net> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
761844b9 |
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27-May-2010 |
Stephane Eranian <eranian@google.com> |
perf report: Make -D print sampled CPU It is useful to know on which CPU a sample was captured on. The information is captured with perf record -R but it was not printed out by perf report -D. This patch adds this. When -R is not used, cpu is set to -1to indicate that the CPU is unknown (it is not captured). Cc: David S. Miller <davem@davemloft.net> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <4bff964c.e88cd80a.3106.7d31@mx.google.com> Signed-off-by: Stephane Eranian <eranian@google.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
dd833d71 |
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31-May-2010 |
Frederic Weisbecker <fweisbec@gmail.com> |
perf: Do the comm inheritance per thread in event__process_task event__process_task() doesn't propagate the comm copy on clone, but only on process fork. So we loose all the tid:comm resolution for tasks that aren't a main process thread. Progragate the per thread granularity to event__process_task for pid resolution. This fixes various unresolved pids in perf sched, especially when we trace multithread processes. The problem is quickly reproducible with the messaging benchmark using the multithread mode "-t" : perf sched record perf bench sched messaging -t Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Tom Zanussi <tzanussi@gmail.com> Cc: Stephane Eranian <eranian@google.com>
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#
13eb04fd |
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31-May-2010 |
Frederic Weisbecker <fweisbec@gmail.com> |
perf: Process comm events by tid When we synthetize the existing running tasks though procfs, we walk through every threads of a process, queuing one comm events per tid. But then on report time, event__process_comm() only creates and sets the comm on a per process granularity. This is the right thing for comm events that came from the kernel, as they are only created on exec. Sub-threads then inherit their comm from fork events. But that doesn't work with our synthetized comm events taken from procfs informations as the per thread granularity is done on comm events directly there. Hence we need event__process_comm() to work with the tid rather than the pid. It won't change anything for comm events coming from the kernel but this will fix the synthetized ones. Before: $ ./perf report -D | grep COMM | grep firefox 0x2c7b8 [0x18]: PERF_RECORD_COMM: firefox:5297 0x2c7d0 [0x18]: PERF_RECORD_COMM: firefox:5297 0x2c7e8 [0x18]: PERF_RECORD_COMM: firefox:5297 0x2c800 [0x18]: PERF_RECORD_COMM: firefox:5297 0x2c818 [0x18]: PERF_RECORD_COMM: firefox:5297 0x2c830 [0x18]: PERF_RECORD_COMM: firefox:5297 After: $ ./perf report -D | grep COMM | grep firefox 0x2c7b8 [0x18]: PERF_RECORD_COMM: firefox:5297 0x2c7d0 [0x18]: PERF_RECORD_COMM: firefox:5299 0x2c7e8 [0x18]: PERF_RECORD_COMM: firefox:5300 0x2c800 [0x18]: PERF_RECORD_COMM: firefox:5308 0x2c818 [0x18]: PERF_RECORD_COMM: firefox:5309 0x2c830 [0x18]: PERF_RECORD_COMM: firefox:5312 This fixes various unresolved pid on perf sched. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Tom Zanussi <tzanussi@gmail.com> Cc: Stephane Eranian <eranian@google.com>
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#
cee75ac7 |
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14-May-2010 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf hist: Clarify events_stats fields usage The events_stats.total field is too generic, rename it to .total_period, and also add a comment explaining that it is the sum of all the .period fields in samples, that is needed because we use auto-freq to avoid sampling artifacts. Ditto for events_stats.lost, that is the sum of all lost_event.lost fields, i.e. the number of events the kernel dropped. Looking at the users, builtin-sched.c can make use of these fields and stop doing it again. Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
c8446b9b |
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14-May-2010 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf hist: Make event__totals per hists This is one more thing that started global but are more useful per hist or per session. Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
1c02c4d2 |
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10-May-2010 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf hist: Introduce hists class and move lots of methods to it In cbbc79a we introduced support for multiple events by introducing a new "event_stat_id" struct and then made several perf_session methods receive a point to it instead of a pointer to perf_session, and kept the event_stats and hists rb_tree in perf_session. While working on the new newt based browser, I realised that it would be better to introduce a new class, "hists" (short for "histograms"), renaming the "event_stat_id" struct and the perf_session methods that were really "hists" methods, as they manipulate only struct hists members, not touching anything in the other perf_session members. Other optimizations, such as calculating the maximum lenght of a symbol name present in an hists instance will be possible as we add them, avoiding a re-traversal just for finding that information. The rationale for the name "hists" to replace "event_stat_id" is that we may have multiple sets of hists for the same event_stat id, as, for instance, the 'perf diff' tool has, so event stat id is not what characterizes what this struct and the functions that manipulate it do. Cc: Eric B Munson <ebmunson@us.ibm.com> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
1f626bc3 |
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09-May-2010 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf session: Embed the host machine data on perf_session We have just one host on a given session, and that is the most common setup right now, so embed a ->host_machine struct machine instance directly in the perf_session class, check if we're looking for it before going to the rb_tree. This also fixes a problem found when we try to process old perf.data files where we didn't have MMAP events for the kernel and modules and thus don't create the kernel maps, do it in event__preprocess_sample if it wasn't already. Reported-by: Ingo Molnar <mingo@elte.hu> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Tom Zanussi <tzanussi@gmail.com> Cc: Zhang, Yanmin <yanmin_zhang@linux.intel.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
4cc49458 |
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09-May-2010 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf symbols: Check if a struct machine instance was found Which can happen when processing old files that had no fake kernel MMAP, events. That shouldn't result in perf_session__create_kernel_maps not being called, this will be fixed in a followup patch, for now do these checks to avoid segfaulting. Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
3ceb0d44 |
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09-May-2010 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf symbols: Consider unresolved DSOs in the dso__col_widt calculation By using BITS_PER_LONG / 4, that is the number of chars that will be used in such cases as the DSO "name". Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
9890948d |
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04-May-2010 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf report: Make dso__calc_col_width agree with hist_entry__dso_snprintf The first was always using the ->long_name, while the later used ->short_name if verbose was not set, resulting in the dso column to be much wider than needed most of the time. Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
02bf60aa |
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04-May-2010 |
Anton Blanchard <anton@samba.org> |
perf: Fix performance issue with perf report On a large machine we spend a lot of time in perf_header__find_attr when running perf report. If we are parsing a file without PERF_SAMPLE_ID then for each sample we call perf_header__find_attr and loop through all counter IDs, never finding a match. As the machine gets larger there are more per cpu counters and we spend an awful lot of time in there. The patch below initialises each sample id to -1ULL and checks for this in perf_header__find_attr. We may need to do something more intelligent eventually (eg a hash lookup from counter id to attr) but this at least fixes the most common usage of perf report. Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Eric B Munson <ebmunson@us.ibm.com> Acked-by: Eric B Munson <ebmunson@us.ibm.com> LKML-Reference: <20100504111915.GB14636@kryten> Signed-off-by: Anton Blanchard <anton@samba.org> -- Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
d28c6223 |
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27-Apr-2010 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf machine: Adopt some map_groups functions Those functions operated on members now grouped in 'struct machine', so move those methods to this new class. The changes made to 'perf probe' shows that using this abstraction inserting probes on guests almost got supported for free. Cc: Avi Kivity <avi@redhat.com> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Masami Hiramatsu <mhiramat@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Zhang, Yanmin <yanmin_zhang@linux.intel.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
48ea8f54 |
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27-Apr-2010 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf machine: Pass buffer size to machine__mmap_name Don't blindly assume that the size of the buffer is enough, use snprintf. Cc: Avi Kivity <avi@redhat.com> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Zhang, Yanmin <yanmin_zhang@linux.intel.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
23346f21 |
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27-Apr-2010 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Rename "kernel_info" to "machine" struct kernel_info and kerninfo__ are too vague, what they really describe are machines, virtual ones or hosts. There are more changes to introduce helpers to shorten function calls and to make more clear what is really being done, but I left that for subsequent patches. Cc: Avi Kivity <avi@redhat.com> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Zhang, Yanmin <yanmin_zhang@linux.intel.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
a1645ce1 |
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18-Apr-2010 |
Zhang, Yanmin <yanmin_zhang@linux.intel.com> |
perf: 'perf kvm' tool for monitoring guest performance from host Here is the patch of userspace perf tool. Signed-off-by: Zhang Yanmin <yanmin_zhang@linux.intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
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#
4af8b35d |
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03-Apr-2010 |
Anton Blanchard <anton@samba.org> |
perf symbols: Fill in pgoff in mmap synthesized events When we synthesize mmap events we need to fill in the pgoff field. I wasn't able to test this completely since I couldn't find an executable region with a non 0 offset. We will see it when we start doing data profiling. Signed-off-by: Anton Blanchard <anton@samba.org> Cc: David Miller <davem@davemloft.net> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <20100403115331.GK5594@kryten> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
b177f63f |
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25-Mar-2010 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf symbols: Pass the mmap parameters instead of using mmap_event To reduce the coupling of the symbol system with the rest of perf. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1269557941-15617-2-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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#
96415e4d |
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24-Mar-2010 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf symbols: Avoid unnecessary symbol loading when dso list is specified We were performing the full thread__find_addr_location operation, i.e. resolving to a map/dso _and_ loading its symbols when we can optimize it by first calling thread__find_addr_map to find just the map/dso, check if it is one that we are interested in (passed via --dsos/-d in 'perf annotate', 'perf report', etc) and if not avoid loading the symtab. Nice speedup when we know which DSO we're interested in. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1269459619-982-2-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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#
10fe12ef |
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20-Feb-2010 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf symbols: Fix up map end too on modular kernels with no modules installed In 2161db9 we stopped failing when not finding modules when asked too, but then the kernel maps (just one, for vmlinux) wasn't having its ->end field correctly set up, so symbols were not being found for the vmlinux map because its range was 0-0. Reported-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1266702793-29434-1-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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#
7fbfc683 |
|
08-Feb-2010 |
Anton Blanchard <anton@samba.org> |
perf: Fix hypervisor sample reporting cpumode bits are defined as such: #define PERF_RECORD_MISC_KERNEL (1 << 0) #define PERF_RECORD_MISC_USER (2 << 0) #define PERF_RECORD_MISC_HYPERVISOR (3 << 0) We need to compare against the complete value of cpumode, otherwise hypervisor samples get incorrectly attributed as userspace. Signed-off-by: Anton Blanchard <anton@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: fweisbec@gmail.com LKML-Reference: <20100209034304.GA3702@kryten> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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9de89fe7 |
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03-Feb-2010 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf symbols: Remove perf_session usage in symbols layer I noticed while writing the first test in 'perf regtest' that to just test the symbol handling routines one needs to create a perf session, that is a layer centered on a perf.data file, events, etc, so I untied these layers. This reduces the complexity for the users as the number of parameters to most of the symbols and session APIs now was reduced while not adding more state to all the map instances by only having data that is needed to split the kernel (kallsyms and ELF symtab sections) maps and do vmlinux relocation on the main kernel map. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1265223128-11786-1-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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#
f162f87ad |
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19-Jan-2010 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf symbols: Set dso->kernel when handling the fake vmlinux MMAP event Because it may be possible that there was no buildid section, where we would set this to 1. Found while analysing a perf.data file collected on an ARM machine where an explicitely specified vmlinux was being disregarded. Reported-by: Jamie Iles <jamie.iles@picochip.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1263904574-30732-1-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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#
881516eb |
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15-Jan-2010 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf symbols: Accept an alias when looking for "_text" As it is in PARISC64: parisc:~# uname -a Linux parisc 2.6.33-rc4-tip+ #1 SMP Thu Jan 14 13:33:34 BRST 2010 parisc64 GNU/Linux parisc:~# grep -w _text /proc/kallsyms 0000000040100000 A _text parisc:~# grep 0000000040100000 /proc/kallsyms 0000000040100000 T stext 0000000040100000 T _stext 0000000040100000 A _text parisc:~# Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1263586107-1756-2-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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#
460848fc |
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15-Jan-2010 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf symbols: The synthesized kernel modules MMAP must use the pathnames Since we use ->long_name in dsos__find now. Now 'perf buildid_list' is not duplicating those and managing to show the proper build-ids for the DSOs with hits: [root@doppio linux-2.6-tip]# perf buildid-list -H 74f9930ee94475b6b3238caf3725a50d59cb994b [kernel.kallsyms] 9ffdcac0a7935922d1f04b6cc9029dfef0f066ef /lib/modules/2.6.33-rc4-tip+/kernel/arch/x86/crypto/aes-x86_64.ko 3aaf89c32ebfc438ff546c93597d41788e3e65f3 /lib/modules/2.6.33-rc4-tip+/kernel/drivers/net/wireless/iwlwifi/iwl3945.ko 19f46033f73e1ec612937189bb118c5daba5a0c8 /lib/modules/2.6.33-rc4-tip+/kernel/net/mac80211/mac80211.ko 1772f014a7a7272859655acb0c64a20ab20b75ee /lib/modules/2.6.33-rc4-tip+/kernel/drivers/net/e1000e/e1000e.ko eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1 /lib64/libc-2.10.2.so 5c68f7afeb33309c78037e374b0deee84dd441f6 /lib64/libpthread-2.10.2.so e9c9ad5c138ef882e4507d2605645b597da43873 /bin/dbus-daemon bcda7d09eb6c9ee380dae0ed3d591d4311decc31 /lib64/libdbus-1.so.3.4.0 7cc449a77f48b85d6088114000e970ced613bed8 /usr/lib64/libcrypto.so.0.9.8k fdd1ccd1ff7917ab020653147ab3bacf0a85b5b9 /lib64/libglib-2.0.so.0.2000.5 e4417ebb8762e5f2eee93c8011a71115ff5edad8 /lib64/libgobject-2.0.so.0.2000.5 931e49461f6df99104f0febcc52f6fed5e2efce6 /usr/sbin/sshd dab5f724c088f89fbd8304da553ed6cb30bbec96 /usr/lib64/libgdk-x11-2.0.so.0.1600.6 f2037a091ef36b591187a858d75e203690ea9409 /usr/sbin/openvpn a8e4f743b40fb1fd8b85e2f9b88d93b661472b8f /bin/find 81120aada06e68b1e85882925a0fc6d7345ef59a /home/acme/bin/perf [root@doppio linux-2.6-tip]# Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1263568672-30323-1-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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#
59ee68ec |
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14-Jan-2010 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf symbols: Create thread__find_addr_map from thread__find_addr_location Because some tools will only want to know with maps had hits, not needing the full symbol resolution done by thread__find_addr_location. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1263519930-22803-3-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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#
18c3daa4 |
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14-Jan-2010 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf record: Encode the domain while synthesizing MMAP events In the past 'perf record' had to process only userspace MMAP events, the ones generated in the kernel, but after we reused the MMAP events to encode the module mapings we ended up adding them first to the list of userspace DSOs (dsos__user) and to the kernel one (dsos__kernel). Fix this by encoding the header.misc field and then using it, like other parts to decide the right DSOs list to insert/find. The gotcha here is that since the kernel puts zero in .misc, which isn't PERF_RECORD_MISC_KERNEL (1 << 1), to differentiate, we put 1 in .misc. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1263519930-22803-2-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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#
9e201442 |
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14-Jan-2010 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf symbols: Cache /proc/kallsyms files by build-id So that when we don't have a vmlinux handy we can store the kallsyms for later use by 'perf report'. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1263501006-14185-3-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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#
0d755034 |
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13-Jan-2010 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Don't cast RIP to pointers Since they can come from another architecture with bigger pointers, i.e. processing a 64-bit perf.data on a 32-bit arch. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1263478990-8200-1-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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#
b7cece76 |
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13-Jan-2010 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Encode kernel module mappings in perf.data We were always looking at the running machine /proc/modules, even when processing a perf.data file, which only makes sense when we're doing 'perf record' and 'perf report' on the same machine, and in close sucession, or if we don't use modules at all, right Peter? ;-) Now, at 'perf record' time we read /proc/modules, find the long path for modules, and put them as PERF_MMAP events, just like we did to encode the reloc reference symbol for vmlinux. Talking about that now it is encoded in .pgoff, so that we can use .{start,len} to store the address boundaries for the kernel so that when we reconstruct the kmaps tree we can do lookups right away, without having to fixup the end of the kernel maps like we did in the past (and now only in perf record). One more step in the 'perf archive' direction when we'll finally be able to collect data in one machine and analyse in another. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1263396139-4798-1-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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#
cf553114 |
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07-Jan-2010 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Create typedef for common event synthesizing callback Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1262901583-8074-3-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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#
56b03f3c |
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05-Jan-2010 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Handle relocatable kernels DSOs don't have this problem because the kernel emits a PERF_MMAP for each new executable mapping it performs on monitored threads. To fix the kernel case we simulate the same behaviour, by having 'perf record' to synthesize a PERF_MMAP for the kernel, encoded like this: [root@doppio ~]# perf record -a -f sleep 1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.344 MB perf.data (~15038 samples) ] [root@doppio ~]# perf report -D | head -10 0xd0 [0x40]: event: 1 . . ... raw event: size 64 bytes . 0000: 01 00 00 00 00 00 40 00 00 00 00 00 00 00 00 00 ......@........ . 0010: 00 00 00 81 ff ff ff ff 00 00 00 00 00 00 00 00 ............... . 0020: 00 00 00 00 00 00 00 00 5b 6b 65 72 6e 65 6c 2e ........ [kernel . 0030: 6b 61 6c 6c 73 79 6d 73 2e 5f 74 65 78 74 5d 00 kallsyms._text] . 0xd0 [0x40]: PERF_RECORD_MMAP 0/0: [0xffffffff81000000((nil)) @ (nil)]: [kernel.kallsyms._text] I.e. we identify such event as having: .pid = 0 .filename = [kernel.kallsyms.REFNAME] .start = REFNAME addr in /proc/kallsyms at 'perf record' time and use now a hardcoded value of '.text' for REFNAME. Then, later, in 'perf report', if there are any kernel hits and thus we need to resolve kernel symbols, we search for REFNAME and if its address changed, relocation happened and we thus must change the kernel mapping routines to one that uses .pgoff as the relocation to apply. This way we use the same mechanism used for the other DSOs and don't have to do a two pass in all the kernel symbols. Reported-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> LKML-Reference: <1262717431-1246-1-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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#
d599db3f |
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15-Dec-2009 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf report: Generalize perf_session__fprintf_hists() Pull it out of builtin-report - further changes will be made and it will then be reusable in 'perf diff' as well. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1260914682-29652-4-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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#
c410a338 |
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15-Dec-2009 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf symbols: Move symbol filtering to event__preprocess_sample() So that --dsos, --comm, --symbols can bem used in more tools, like in perf diff: $ perf record -f find / > /dev/null $ perf record -f find / > /dev/null $ perf diff --dsos /lib64/libc-2.10.1.so | head -5 1 +22392124 /lib64/libc-2.10.1.so _IO_vfprintf_internal 2 +6410655 /lib64/libc-2.10.1.so __GI_memmove 3 +1 +9192692 /lib64/libc-2.10.1.so _int_malloc 4 -1 -15158605 /lib64/libc-2.10.1.so _int_free 5 +45669 /lib64/libc-2.10.1.so _IO_new_file_xsputn $ Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1260914682-29652-3-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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#
f823e441 |
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14-Dec-2009 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf session: Event statistics also are per session Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1260810361-22828-1-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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#
4aa65636 |
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13-Dec-2009 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf session: Move kmaps to perf_session There is still some more work to do to disentangle map creation from DSO loading, but this happens only for the kernel, and for the early adopters of perf diff, where this disentanglement matters most, we'll be testing different kernels, so no problem here. Further clarification: right now we create the kernel maps for the various modules and discontiguous kernel text maps when loading the DSO, we should do it as a two step process, first creating the maps, for multiple mappings with the same DSO store, then doing the dso load just once, for the first hit on one of the maps sharing this DSO backing store. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1260741029-4430-6-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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#
b3165f41 |
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13-Dec-2009 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf session: Move the global threads list to perf_session So that we can process two perf.data files. We still need to add a O_MMAP mode for perf_session so that we can do all the mmap stuff in it. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1260741029-4430-5-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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#
ec913369 |
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13-Dec-2009 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf session: Reduce the number of parms to perf_session__process_events By having the cwd/cwdlen in the perf_session struct and full_paths in perf_event_ops. Now its just a matter of passing the ops. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1260741029-4430-4-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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#
d8f66248 |
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13-Dec-2009 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf session: Pass the perf_session to the event handling operations They will need it to get the right threads list, etc. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1260741029-4430-1-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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#
9958e1f0 |
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11-Dec-2009 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf symbols: Rename kthreads to kmaps, using another abstraction for it Using a struct thread instance just to hold the kernel space maps (vmlinux + modules) is overkill and confuses people trying to understand the perf symbols abstractions. The kernel maps are really present in all threads, i.e. the kernel is a library, not a separate thread. So introduce the 'map_groups' abstraction and use it for the kernel maps, now in the kmaps global variable. It, in turn, will move, together with the threads list to the perf_file abstraction, so that we can support multiple perf_file instances, needed by perf diff. Brainstormed-with: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Eduardo Habkost <ehabkost@redhat.com> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1260550239-5372-1-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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#
180f95e2 |
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06-Dec-2009 |
OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> |
perf: Make common SAMPLE_EVENT parser Currently, sample event data is parsed for each commands, and it is assuming that the data is not including other data. (E.g. timechart, trace, etc. can't parse the event if it has PERF_SAMPLE_CALLCHAIN) So, even if we record the superset data for multiple commands at a time, commands can't parse. etc. To fix it, this makes common sample event parser, and use it to parse sample event correctly. (PERF_SAMPLE_READ is unsupported for now though, it seems to be not using.) Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <87hbs48imv.fsf@devron.myhome.or.jp> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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#
bab81b62 |
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30-Nov-2009 |
Li Zefan <lizf@cn.fujitsu.com> |
perf annotate: Fix perf data parsing perf-annotate doesn't parse perf.data correctly in that it doesn't read perf header. Fix this by using mmap_dispatch_perf_file(). Before: TOTAL events: 17565 MMAP events: 3221 LOST events: 10 COMM events: 235 EXIT events: 2 THROTTLE events: 1 UNTHROTTLE events: 2 FORK events: 10 READ events: 1 SAMPLE events: 14083 After: TOTAL events: 17290 MMAP events: 3203 LOST events: 0 COMM events: 234 EXIT events: 1 THROTTLE events: 0 UNTHROTTLE events: 0 FORK events: 0 READ events: 0 SAMPLE events: 13852 Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Arnaldo Carvalho de Melo <acme@infradead.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Arjan van de Ven <arjan@infradead.org> LKML-Reference: <4B14B201.9030708@cn.fujitsu.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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1ed091c4 |
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27-Nov-2009 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Consolidate symbol resolving across all tools Now we have a very high level routine for simple tools to process IP sample events: int event__preprocess_sample(const event_t *self, struct addr_location *al, symbol_filter_t filter) It receives the event itself and will insert new threads in the global threads list and resolve the map and symbol, filling all this info into the new addr_location struct, so that tools like annotate and report can further process the event by creating hist_entries in their specific way (with or without callgraphs, etc). It in turn uses the new next layer function: void thread__find_addr_location(struct thread *self, u8 cpumode, enum map_type type, u64 addr, struct addr_location *al, symbol_filter_t filter) This one will, given a thread (userspace or the kernel kthread one), will find the given type (MAP__FUNCTION now, MAP__VARIABLE too in the near future) at the given cpumode, taking vdsos into account (userspace hit, but kernel symbol) and will fill all these details in the addr_location given. Tools that need a more compact API for plain function resolution, like 'kmem', can use this other one: struct symbol *thread__find_function(struct thread *self, u64 addr, symbol_filter_t filter) So, to resolve a kernel symbol, that is all the 'kmem' tool needs, its just a matter of calling: sym = thread__find_function(kthread, addr, NULL); The 'filter' parameter is needed because we do lazy parsing/loading of ELF symtabs or /proc/kallsyms. With this we remove more code duplication all around, which is always good, huh? :-) Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: John Kacur <jkacur@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1259346563-12568-12-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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62daacb5 |
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27-Nov-2009 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Reorganize event processing routines, lotsa dups killed While implementing event__preprocess_sample, that will do all of the symbol lookup in one convenient function, I noticed that util/process_event.[ch] were not being used at all, then started looking if there were other functions that could be shared and... All those functions really don't need to receive offset + head, the only thing they did was common to all of them, so do it at one place instead. Stats about number of each type of event processed now is done in a central place. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: John Kacur <jkacur@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1259346563-12568-11-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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234fbbf5 |
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26-Oct-2009 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Generalize event synthesizing routines Because we will need it in 'perf top' to support userspace symbols for existing threads. Now we pass a callback that will receive the synthesized event and then write it to the output file in 'perf record' and in the upcoming patch for 'perf top' we will just immediatelly create the in memory representation of threads and maps. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Mike Galbraith <efault@gmx.de> LKML-Reference: <1256592199-9608-2-git-send-email-acme@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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