#
a61f89bf |
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14-Dec-2023 |
Kan Liang <kan.liang@linux.intel.com> |
perf top: Uniform the event name for the hybrid machine It's hard to distinguish the default cycles events among hybrid PMUs. For example, $ perf top Available samples 385 cycles:P 903 cycles:P The other tool, e.g., perf record, uniforms the event name and adds the hybrid PMU name before opening the event. So the events can be easily distinguished. Apply the same methodology for the perf top as well. The evlist__uniquify_name() will be invoked by both record and top. Move it to util/evlist.c With the patch: $ perf top Available samples 148 cpu_atom/cycles:P/ 1K cpu_core/cycles:P/ Reviewed-by: Ian Rogers <irogers@google.com> Signed-off-by: Kan Liang <kan.liang@linux.intel.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Hector Martin <marcan@marcan.st> Cc: Marc Zyngier <maz@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lore.kernel.org/r/20231214144612.1092028-2-kan.liang@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
9c95e4ef |
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03-Sep-2023 |
Yang Jihong <yangjihong1@huawei.com> |
perf evlist: Add evlist__findnew_tracking_event() helper Currently, intel-bts, intel-pt, and arm-spe may add tracking event to the evlist. We may need to search for the tracking event for some settings. Therefore, add evlist__findnew_tracking_event() helper. If system_wide is true, evlist__findnew_tracking_event() set the cpu map of the evsel to all online CPUs. Signed-off-by: Yang Jihong <yangjihong1@huawei.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Tested-by: Ravi Bangoria <ravi.bangoria@amd.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Anshuman Khandual <anshuman.khandual@arm.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Richter <tmricht@linux.ibm.com> Link: https://lore.kernel.org/r/20230904023340.12707-3-yangjihong1@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
7b100989 |
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27-May-2023 |
Ian Rogers <irogers@google.com> |
perf evlist: Remove __evlist__add_default __evlist__add_default adds a cycles event to a typically empty evlist and was extended for hybrid with evlist__add_default_hybrid, as more than 1 PMU was necessary. Rather than have dedicated logic for the cycles event, this change switches to parsing 'cycles:P' which will handle wildcarding the PMUs appropriately for hybrid. Reviewed-by: Kan Liang <kan.liang@linux.intel.com> 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: Athira Rajeev <atrajeev@linux.vnet.ibm.com> Cc: Dmitrii Dolgov <9erthalion6@gmail.com> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Ingo Molnar <mingo@redhat.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: Kajol Jain <kjain@linux.ibm.com> Cc: Kang Minchul <tegongkang@gmail.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Madhavan Srinivasan <maddy@linux.ibm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mike Leach <mike.leach@linaro.org> Cc: Ming Wang <wangming01@loongson.cn> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ravi Bangoria <ravi.bangoria@amd.com> Cc: Rob Herring <robh@kernel.org> Cc: Sandipan Das <sandipan.das@amd.com> Cc: Sean Christopherson <seanjc@google.com> Cc: Suzuki Poulouse <suzuki.poulose@arm.com> Cc: Thomas Richter <tmricht@linux.ibm.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/20230527072210.2900565-14-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
5ac72634 |
|
27-May-2023 |
Ian Rogers <irogers@google.com> |
perf tools: Warn if no user requested CPUs match PMU's CPUs In commit 1d3351e631fc ("perf tools: Enable on a list of CPUs for hybrid") perf on hybrid will warn if a user requested CPU doesn't match the PMU of the given event but only for hybrid PMUs. Make the logic generic for all PMUs and remove the hybrid logic. Warn if a CPU is requested that isn't present/offline for events not on the core. Warn if a CPU is requested for a core PMU, but the CPU isn't within the cpu map of that PMU. For example on a 16 (0-15) CPU system: ``` $ perf stat -e imc_free_running/data_read/,cycles -C 16 true WARNING: A requested CPU in '16' is not supported by PMU 'uncore_imc_free_running_1' (CPUs 0-15) for event 'imc_free_running/data_read/' WARNING: A requested CPU in '16' is not supported by PMU 'uncore_imc_free_running_0' (CPUs 0-15) for event 'imc_free_running/data_read/' WARNING: A requested CPU in '16' is not supported by PMU 'cpu' (CPUs 0-15) for event 'cycles' Performance counter stats for 'CPU(s) 16': <not supported> MiB imc_free_running/data_read/ <not supported> cycles 0.000575312 seconds time elapsed ``` Remove evlist__fix_hybrid_cpus that previously produced the warnings and also perf_pmu__cpus_match that worked with evlist__fix_hybrid_cpus to change CPU maps for hybrid CPUs, something that is no longer necessary as CPU map propagation properly intersects user requested CPUs with the core PMU's CPU map. Reviewed-by: Kan Liang <kan.liang@linux.intel.com> 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: Athira Rajeev <atrajeev@linux.vnet.ibm.com> Cc: Dmitrii Dolgov <9erthalion6@gmail.com> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Ingo Molnar <mingo@redhat.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: Kajol Jain <kjain@linux.ibm.com> Cc: Kang Minchul <tegongkang@gmail.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Madhavan Srinivasan <maddy@linux.ibm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mike Leach <mike.leach@linaro.org> Cc: Ming Wang <wangming01@loongson.cn> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ravi Bangoria <ravi.bangoria@amd.com> Cc: Rob Herring <robh@kernel.org> Cc: Sandipan Das <sandipan.das@amd.com> Cc: Sean Christopherson <seanjc@google.com> Cc: Suzuki Poulouse <suzuki.poulose@arm.com> Cc: Thomas Richter <tmricht@linux.ibm.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/20230527072210.2900565-12-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
411ad22e |
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02-May-2023 |
Ian Rogers <irogers@google.com> |
perf parse-events: Add pmu filter To support the cputype argument added to "perf stat" for hybrid it is necessary to filter events during wildcard matching. Add a scanner argument for the filter and checking it when wildcard matching. Signed-off-by: Ian Rogers <irogers@google.com> Tested-by: Kan Liang <kan.liang@linux.intel.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ahmad Yasin <ahmad.yasin@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Athira Rajeev <atrajeev@linux.vnet.ibm.com> Cc: Caleb Biggers <caleb.biggers@intel.com> Cc: Edward Baker <edward.baker@intel.com> 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: Kajol Jain <kjain@linux.ibm.com> Cc: Kang Minchul <tegongkang@gmail.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Perry Taylor <perry.taylor@intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ravi Bangoria <ravi.bangoria@amd.com> Cc: Rob Herring <robh@kernel.org> Cc: Samantha Alt <samantha.alt@intel.com> Cc: Stephane Eranian <eranian@google.com> Cc: Sumanth Korikkar <sumanthk@linux.ibm.com> Cc: Suzuki Poulouse <suzuki.poulose@arm.com> Cc: Thomas Richter <tmricht@linux.ibm.com> Cc: Tiezhu Yang <yangtiezhu@loongson.cn> Cc: Weilin Wang <weilin.wang@intel.com> Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com> Cc: Yang Jihong <yangjihong1@huawei.com> Link: https://lore.kernel.org/r/20230502223851.2234828-30-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
9d2dc632 |
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11-Mar-2023 |
Ian Rogers <irogers@google.com> |
perf evlist: Remove nr_groups Maintaining the number of groups during event parsing is problematic and since changing to sort/regroup events can only be computed by a linear pass over the evlist. As the value is generally only used in tests, rather than hold it in a variable compute it by passing over the evlist when necessary. This change highlights that libpfm's counting of groups with a single entry disagreed with regular event parsing. The libpfm tests are updated accordingly. Signed-off-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> 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: Kajol Jain <kjain@linux.ibm.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Kim Phillips <kim.phillips@amd.com> Cc: Leo Yan <leo.yan@linaro.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: Sean Christopherson <seanjc@google.com> Cc: Steinar H. Gunderson <sesse@google.com> Cc: Stephane Eranian <eranian@google.com> Cc: Suzuki Poulouse <suzuki.poulose@arm.com> Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com> Link: https://lore.kernel.org/r/20230312021543.3060328-2-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
347c2f0a |
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11-Mar-2023 |
Ian Rogers <irogers@google.com> |
perf parse-events: Sort and group parsed events This change is intended to be a no-op for most current cases, the default sort order is the order the events were parsed. Where it varies is in how groups are handled. Previously an uncore and core event that are grouped would most often cause the group to be removed: ``` $ perf stat -e '{instructions,uncore_imc_free_running_0/data_total/}' -a sleep 1 WARNING: grouped events cpus do not match, disabling group: anon group { instructions, uncore_imc_free_running_0/data_total/ } ... ``` However, when wildcards are used the events should be re-sorted and re-grouped in parse_events__set_leader, but this currently fails for simple examples: ``` $ perf stat -e '{uncore_imc_free_running/data_read/,uncore_imc_free_running/data_write/}' -a sleep 1 Performance counter stats for 'system wide': <not counted> MiB uncore_imc_free_running/data_read/ <not counted> MiB uncore_imc_free_running/data_write/ 1.000996992 seconds time elapsed ``` A futher failure mode, fixed in this patch, is to force topdown events into a group. This change moves sorting the evsels in the evlist after parsing. It requires parsing to set up groups. First the evsels are sorted respecting the existing groupings and parse order, but also reordering to ensure evsels of the same PMU and group appear together. So that software and aux events respect groups, their pmu_name is taken from the group leader. The sorting is done with list_sort removing a memory allocation. After sorting a pass is done to correct the group leaders and for topdown events ensuring they have a group leader. This fixes the problems seen before: ``` $ perf stat -e '{uncore_imc_free_running/data_read/,uncore_imc_free_running/data_write/}' -a sleep 1 Performance counter stats for 'system wide': 727.42 MiB uncore_imc_free_running/data_read/ 81.84 MiB uncore_imc_free_running/data_write/ 1.000948615 seconds time elapsed ``` As well as making groups not fail for cases like: ``` $ perf stat -e '{imc_free_running_0/data_total/,imc_free_running_1/data_total/}' -a sleep 1 Performance counter stats for 'system wide': 256.47 MiB imc_free_running_0/data_total/ 256.48 MiB imc_free_running_1/data_total/ 1.001165442 seconds time elapsed ``` Signed-off-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> 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: Kajol Jain <kjain@linux.ibm.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Kim Phillips <kim.phillips@amd.com> Cc: Leo Yan <leo.yan@linaro.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: Sean Christopherson <seanjc@google.com> Cc: Steinar H. Gunderson <sesse@google.com> Cc: Stephane Eranian <eranian@google.com> Cc: Suzuki Poulouse <suzuki.poulose@arm.com> Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com> Link: https://lore.kernel.org/r/20230312021543.3060328-2-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
5f8f9567 |
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13-Dec-2022 |
Ian Rogers <irogers@google.com> |
perf evlist: Remove group option. The group option predates grouping events using curly braces added in commit 89efb029502d7f2d ("perf tools: Add support to parse event group syntax"). The --group option was retained for legacy support (in August 2012) but keeping it adds complexity. 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: Anshuman Khandual <anshuman.khandual@arm.com> Cc: Athira Jajeev <atrajeev@linux.vnet.ibm.com> Cc: Eelco Chaudron <echaudro@redhat.com> Cc: German Gomez <german.gomez@arm.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Kim Phillips <kim.phillips@amd.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Riccardo Mancini <rickyman7@gmail.com> Cc: Sandipan Das <sandipan.das@amd.com> Cc: Sean Christopherson <seanjc@google.com> Cc: Shaomin Deng <dengshaomin@cdjrlc.com> Cc: Stephane Eranian <eranian@google.com> Cc: Timothy Hayes <timothy.hayes@arm.com> Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com> Cc: bpf@vger.kernel.org Link: https://lore.kernel.org/r/20221213232651.1269909-6-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
378ef0f5 |
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05-Dec-2022 |
Ian Rogers <irogers@google.com> |
perf build: Use libtraceevent from the system Remove the LIBTRACEEVENT_DYNAMIC and LIBTRACEFS_DYNAMIC make command line variables. If libtraceevent isn't installed or NO_LIBTRACEEVENT=1 is passed to the build, don't compile in libtraceevent and libtracefs support. This also disables CONFIG_TRACE that controls "perf trace". CONFIG_LIBTRACEEVENT is used to control enablement in Build/Makefiles, HAVE_LIBTRACEEVENT is used in C code. Without HAVE_LIBTRACEEVENT tracepoints are disabled and as such the commands kmem, kwork, lock, sched and timechart are removed. The majority of commands continue to work including "perf test". Committer notes: Fixed up a tools/perf/util/Build reject and added: #include <traceevent/event-parse.h> to tools/perf/util/scripting-engines/trace-event-perl.c. Committer testing: $ rpm -qi libtraceevent-devel Name : libtraceevent-devel Version : 1.5.3 Release : 2.fc36 Architecture: x86_64 Install Date: Mon 25 Jul 2022 03:20:19 PM -03 Group : Unspecified Size : 27728 License : LGPLv2+ and GPLv2+ Signature : RSA/SHA256, Fri 15 Apr 2022 02:11:58 PM -03, Key ID 999f7cbf38ab71f4 Source RPM : libtraceevent-1.5.3-2.fc36.src.rpm Build Date : Fri 15 Apr 2022 10:57:01 AM -03 Build Host : buildvm-x86-05.iad2.fedoraproject.org Packager : Fedora Project Vendor : Fedora Project URL : https://git.kernel.org/pub/scm/libs/libtrace/libtraceevent.git/ Bug URL : https://bugz.fedoraproject.org/libtraceevent Summary : Development headers of libtraceevent Description : Development headers of libtraceevent-libs $ Default build: $ ldd ~/bin/perf | grep tracee libtraceevent.so.1 => /lib64/libtraceevent.so.1 (0x00007f1dcaf8f000) $ # perf trace -e sched:* --max-events 10 0.000 migration/0/17 sched:sched_migrate_task(comm: "", pid: 1603763 (perf), prio: 120, dest_cpu: 1) 0.005 migration/0/17 sched:sched_wake_idle_without_ipi(cpu: 1) 0.011 migration/0/17 sched:sched_switch(prev_comm: "", prev_pid: 17 (migration/0), prev_state: 1, next_comm: "", next_prio: 120) 1.173 :0/0 sched:sched_wakeup(comm: "", pid: 3138 (gnome-terminal-), prio: 120) 1.180 :0/0 sched:sched_switch(prev_comm: "", prev_prio: 120, next_comm: "", next_pid: 3138 (gnome-terminal-), next_prio: 120) 0.156 migration/1/21 sched:sched_migrate_task(comm: "", pid: 1603763 (perf), prio: 120, orig_cpu: 1, dest_cpu: 2) 0.160 migration/1/21 sched:sched_wake_idle_without_ipi(cpu: 2) 0.166 migration/1/21 sched:sched_switch(prev_comm: "", prev_pid: 21 (migration/1), prev_state: 1, next_comm: "", next_prio: 120) 1.183 :0/0 sched:sched_wakeup(comm: "", pid: 1602985 (kworker/u16:0-f), prio: 120, target_cpu: 1) 1.186 :0/0 sched:sched_switch(prev_comm: "", prev_prio: 120, next_comm: "", next_pid: 1602985 (kworker/u16:0-f), next_prio: 120) # Had to tweak tools/perf/util/setup.py to make sure the python binding shared object links with libtraceevent if -DHAVE_LIBTRACEEVENT is present in CFLAGS. Building with NO_LIBTRACEEVENT=1 uncovered some more build failures: - Make building of data-convert-bt.c to CONFIG_LIBTRACEEVENT=y - perf-$(CONFIG_LIBTRACEEVENT) += scripts/ - bpf_kwork.o needs also to be dependent on CONFIG_LIBTRACEEVENT=y - The python binding needed some fixups and util/trace-event.c can't be built and linked with the python binding shared object, so remove it in tools/perf/util/setup.py and exclude it from the list of dependencies in the python/perf.so Makefile.perf target. Building without libtraceevent-devel installed uncovered more build failures: - The python binding tools/perf/util/python.c was assuming that traceevent/parse-events.h was always available, which was the case when we defaulted to using the in-kernel tools/lib/traceevent/ files, now we need to enclose it under ifdef HAVE_LIBTRACEEVENT, just like the other parts of it that deal with tracepoints. - We have to ifdef the rules in the Build files with CONFIG_LIBTRACEEVENT=y to build builtin-trace.c and tools/perf/trace/beauty/ as we only ifdef setting CONFIG_TRACE=y when setting NO_LIBTRACEEVENT=1 in the make command line, not when we don't detect libtraceevent-devel installed in the system. Simplification here to avoid these two ways of disabling builtin-trace.c and not having CONFIG_TRACE=y when libtraceevent-devel isn't installed is the clean way. From Athira: <quote> tools/perf/arch/powerpc/util/Build -perf-y += kvm-stat.o +perf-$(CONFIG_LIBTRACEEVENT) += kvm-stat.o </quote> Then, ditto for arm64 and s390, detected by container cross build tests. - s/390 uses test__checkevent_tracepoint() that is now only available if HAVE_LIBTRACEEVENT is defined, enclose the callsite with ifder HAVE_LIBTRACEEVENT. Also from Athira: <quote> With this change, I could successfully compile in these environment: - Without libtraceevent-devel installed - With libtraceevent-devel installed - With “make NO_LIBTRACEEVENT=1” </quote> Then, finally rename CONFIG_TRACEEVENT to CONFIG_LIBTRACEEVENT for consistency with other libraries detected in tools/perf/. Signed-off-by: Ian Rogers <irogers@google.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Tested-by: Athira Rajeev <atrajeev@linux.vnet.ibm.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Nick Desaulniers <ndesaulniers@google.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: bpf@vger.kernel.org Link: http://lore.kernel.org/lkml/20221205225940.3079667-3-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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182bb594 |
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03-Oct-2022 |
Namhyung Kim <namhyung@kernel.org> |
perf tools: Add evlist__add_sched_switch() Add a help to create a system-wide sched_switch event. One merit is that it sets the system-wide bit before adding it to evlist so that the libperf can handle the cpu and thread maps correctly. Reviewed-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lore.kernel.org/r/20221003204647.1481128-5-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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6657a099 |
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24-Aug-2022 |
Adrian Hunter <adrian.hunter@intel.com> |
perf record: Allow multiple recording time ranges AUX area traces can produce too much data to record successfully or analyze subsequently. Add another means to reduce data collection by allowing multiple recording time ranges. This is useful, for instance, in cases where a workload produces predictably reproducible events in specific time ranges. Today we only have perf record -D <msecs> to start at a specific region, or some complicated approach using snapshot mode and external scripts sending signals or using the fifos. But these approaches are difficult to set up compared with simply having perf do it. Extend perf record option -D/--delay option to specifying relative time stamps for start stop controlled by perf with the right time offset, for instance: perf record -e intel_pt// -D 10-20,30-40 to record 10ms to 20ms into the trace and 30ms to 40ms. Example: The example workload is: $ cat repeat-usleep.c int usleep(useconds_t usec); int usage(int ret, const char *msg) { if (msg) fprintf(stderr, "%s\n", msg); fprintf(stderr, "Usage is: repeat-usleep <microseconds>\n"); return ret; } int main(int argc, char *argv[]) { unsigned long usecs; char *end_ptr; if (argc != 2) return usage(1, "Error: Wrong number of arguments!"); errno = 0; usecs = strtoul(argv[1], &end_ptr, 0); if (errno || *end_ptr || usecs > UINT_MAX) return usage(1, "Error: Invalid argument!"); while (1) { int ret = usleep(usecs); if (ret & errno != EINTR) return usage(1, "Error: usleep() failed!"); } return 0; } $ perf record -e intel_pt//u --delay 10-20,40-70,110-160 -- ./repeat-usleep 500 Events disabled Events enabled Events disabled Events enabled Events disabled Events enabled Events disabled [ perf record: Woken up 5 times to write data ] [ perf record: Captured and wrote 0.204 MB perf.data ] Terminated A dlfilter is used to determine continuous data collection (timestamps less than 1ms apart): $ cat dlfilter-show-delays.c static __u64 start_time; static __u64 last_time; int start(void **data, void *ctx) { printf("%-17s\t%-9s\t%-6s\n", " Time", " Duration", " Delay"); return 0; } int filter_event_early(void *data, const struct perf_dlfilter_sample *sample, void *ctx) { __u64 delta; if (!sample->time) return 1; if (!last_time) goto out; delta = sample->time - last_time; if (delta < 1000000) goto out2;; printf("%17.9f\t%9.1f\t%6.1f\n", start_time / 1000000000.0, (last_time - start_time) / 1000000.0, delta / 1000000.0); out: start_time = sample->time; out2: last_time = sample->time; return 1; } int stop(void *data, void *ctx) { printf("%17.9f\t%9.1f\n", start_time / 1000000000.0, (last_time - start_time) / 1000000.0); return 0; } The result shows the times roughly match the --delay option: $ perf script --itrace=qb --dlfilter dlfilter-show-delays.so Time Duration Delay 39215.302317300 9.7 20.5 39215.332480217 30.4 40.9 39215.403837717 49.8 Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexey Bayduraev <alexey.v.bayduraev@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lore.kernel.org/r/20220824072814.16422-6-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
329725d5 |
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24-Aug-2022 |
Adrian Hunter <adrian.hunter@intel.com> |
perf evlist: Add evlist__{en/dis}able_non_dummy() Dummy events are used to provide sideband information like MMAP events that are always needed even when main events are disabled. Add functions that take that into account. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Ian Rogers <irogers@google.com> Cc: Alexey Bayduraev <alexey.v.bayduraev@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lore.kernel.org/r/20220824072814.16422-5-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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feff0b61 |
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24-Aug-2022 |
Adrian Hunter <adrian.hunter@intel.com> |
perf record: Change evlist->ctl_fd to use fdarray_flag__non_perf_event Patch "perf record: Fix way of handling non-perf-event pollfds" added a generic way to handle non-perf-event file descriptors like evlist->ctl_fd. Use it instead of handling evlist->ctl_fd separately. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Ian Rogers <irogers@google.com> Cc: Alexey Bayduraev <alexey.v.bayduraev@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lore.kernel.org/r/20220824072814.16422-4-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
cdb204ad |
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21-Jul-2022 |
Kan Liang <kan.liang@linux.intel.com> |
perf x86 evlist: Add default hybrid events for perf stat Provide a new solution to replace the reverted commit ac2dc29edd21f9ec ("perf stat: Add default hybrid events") For the default software attrs, nothing is changed. For the default hardware attrs, create a new evsel for each hybrid pmu. With the new solution, adding a new default attr will not require the special support for the hybrid platform anymore. Also, the "--detailed" is supported on the hybrid platform With the patch, $ perf stat -a -ddd sleep 1 Performance counter stats for 'system wide': 32,231.06 msec cpu-clock # 32.056 CPUs utilized 529 context-switches # 16.413 /sec 32 cpu-migrations # 0.993 /sec 69 page-faults # 2.141 /sec 176,754,151 cpu_core/cycles/ # 5.484 M/sec (41.65%) 161,695,280 cpu_atom/cycles/ # 5.017 M/sec (49.92%) 48,595,992 cpu_core/instructions/ # 1.508 M/sec (49.98%) 32,363,337 cpu_atom/instructions/ # 1.004 M/sec (58.26%) 10,088,639 cpu_core/branches/ # 313.010 K/sec (58.31%) 6,390,582 cpu_atom/branches/ # 198.274 K/sec (58.26%) 846,201 cpu_core/branch-misses/ # 26.254 K/sec (66.65%) 676,477 cpu_atom/branch-misses/ # 20.988 K/sec (58.27%) 14,290,070 cpu_core/L1-dcache-loads/ # 443.363 K/sec (66.66%) 9,983,532 cpu_atom/L1-dcache-loads/ # 309.749 K/sec (58.27%) 740,725 cpu_core/L1-dcache-load-misses/ # 22.982 K/sec (66.66%) <not supported> cpu_atom/L1-dcache-load-misses/ 480,441 cpu_core/LLC-loads/ # 14.906 K/sec (66.67%) 326,570 cpu_atom/LLC-loads/ # 10.132 K/sec (58.27%) 329 cpu_core/LLC-load-misses/ # 10.208 /sec (66.68%) 0 cpu_atom/LLC-load-misses/ # 0.000 /sec (58.32%) <not supported> cpu_core/L1-icache-loads/ 21,982,491 cpu_atom/L1-icache-loads/ # 682.028 K/sec (58.43%) 4,493,189 cpu_core/L1-icache-load-misses/ # 139.406 K/sec (33.34%) 4,711,404 cpu_atom/L1-icache-load-misses/ # 146.176 K/sec (50.08%) 13,713,090 cpu_core/dTLB-loads/ # 425.462 K/sec (33.34%) 9,384,727 cpu_atom/dTLB-loads/ # 291.170 K/sec (50.08%) 157,387 cpu_core/dTLB-load-misses/ # 4.883 K/sec (33.33%) 108,328 cpu_atom/dTLB-load-misses/ # 3.361 K/sec (50.08%) <not supported> cpu_core/iTLB-loads/ <not supported> cpu_atom/iTLB-loads/ 37,655 cpu_core/iTLB-load-misses/ # 1.168 K/sec (33.32%) 61,661 cpu_atom/iTLB-load-misses/ # 1.913 K/sec (50.03%) <not supported> cpu_core/L1-dcache-prefetches/ <not supported> cpu_atom/L1-dcache-prefetches/ <not supported> cpu_core/L1-dcache-prefetch-misses/ <not supported> cpu_atom/L1-dcache-prefetch-misses/ 1.005466919 seconds time elapsed Signed-off-by: Kan Liang <kan.liang@linux.intel.com> Acked-by: Ian Rogers <irogers@google.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lore.kernel.org/r/20220721065706.2886112-5-zhengjun.xing@linux.intel.com Signed-off-by: Xing Zhengjun <zhengjun.xing@linux.intel.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
a9c1ecda |
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21-Jul-2022 |
Kan Liang <kan.liang@linux.intel.com> |
perf evlist: Always use arch_evlist__add_default_attrs() Current perf stat uses the evlist__add_default_attrs() to add the generic default attrs, and uses arch_evlist__add_default_attrs() to add the Arch specific default attrs, e.g., Topdown for x86. It works well for the non-hybrid platforms. However, for a hybrid platform, the hard code generic default attrs don't work. Uses arch_evlist__add_default_attrs() to replace the evlist__add_default_attrs(). The arch_evlist__add_default_attrs() is modified to invoke the same __evlist__add_default_attrs() for the generic default attrs. No functional change. Add default_null_attrs[] to indicate the arch specific attrs. No functional change for the arch specific default attrs either. Signed-off-by: Kan Liang <kan.liang@linux.intel.com> Acked-by: Ian Rogers <irogers@google.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lore.kernel.org/r/20220721065706.2886112-4-zhengjun.xing@linux.intel.com Signed-off-by: Xing Zhengjun <zhengjun.xing@linux.intel.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
126d68fd |
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24-May-2022 |
Adrian Hunter <adrian.hunter@intel.com> |
perf evlist: Add evlist__add_dummy_on_all_cpus() Add evlist__add_dummy_on_all_cpus() to enable creating a system-wide dummy event that sets up the system-wide maps before map propagation. For convenience, add evlist__add_aux_dummy() so that the logic can be used whether or not the event needs to be system-wide. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Ian Rogers <irogers@google.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Alexey Bayduraev <alexey.v.bayduraev@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Leo Yan <leo.yan@linaro.org> Link: https://lore.kernel.org/r/20220524075436.29144-6-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
024b3b42 |
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06-May-2022 |
Adrian Hunter <adrian.hunter@intel.com> |
perf auxtrace: Move evlist__enable_event_idx() to auxtrace.c evlist__enable_event_idx() is used only by auxtrace. Move it to auxtrace.c in preparation for making it even more auxtrace specific. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Ian Rogers <irogers@google.com> Cc: Alexey Bayduraev <alexey.v.bayduraev@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Leo Yan <leo.yan@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lore.kernel.org/lkml/20220506122601.367589-5-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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6fbe4f48 |
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17-Jan-2022 |
Alexey Bayduraev <alexey.v.bayduraev@linux.intel.com> |
perf record: Introduce function to propagate control commands Introduce evlist__ctlfd_update() function to propagate external control commands to global evlist object. Reviewed-by: Riccardo Mancini <rickyman7@gmail.com> Signed-off-by: Alexey Bayduraev <alexey.v.bayduraev@linux.intel.com> Tested-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Riccardo Mancini <rickyman7@gmail.com> Acked-by: Andi Kleen <ak@linux.intel.com> Acked-by: Namhyung Kim <namhyung@gmail.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Antonov <alexander.antonov@linux.intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexei Budankov <abudankov@huawei.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lore.kernel.org/r/7df52c9816b13c74897b9e518128b29a391462fe.1642440724.git.alexey.v.bayduraev@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
6d18804b |
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04-Jan-2022 |
Ian Rogers <irogers@google.com> |
perf cpumap: Give CPUs their own type A common problem is confusing CPU map indices with the CPU, by wrapping the CPU with a struct then this is avoided. This approach is similar to atomic_t. Committer notes: To make it build with BUILD_BPF_SKEL=1 these files needed the conversions to 'struct perf_cpu' usage: tools/perf/util/bpf_counter.c tools/perf/util/bpf_counter_cgroup.c tools/perf/util/bpf_ftrace.c Also perf_env__get_cpu() was removed back in "perf cpumap: Switch cpu_map__build_map to cpu function". Additionally these needed to be fixed for the ARM builds to complete: tools/perf/arch/arm/util/cs-etm.c tools/perf/arch/arm64/util/pmu.c Suggested-by: John Garry <john.garry@huawei.com> Signed-off-by: Ian Rogers <irogers@google.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Kajol Jain <kjain@linux.ibm.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Mike Leach <mike.leach@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Clarke <pc@us.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Riccardo Mancini <rickyman7@gmail.com> Cc: Stephane Eranian <eranian@google.com> Cc: Suzuki Poulouse <suzuki.poulose@arm.com> Cc: Vineet Singh <vineet.singh@intel.com> Cc: coresight@lists.linaro.org Cc: linux-arm-kernel@lists.infradead.org Cc: zhengjun.xing@intel.com Link: https://lore.kernel.org/r/20220105061351.120843-49-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
472832d2 |
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04-Jan-2022 |
Ian Rogers <irogers@google.com> |
perf evlist: Refactor evlist__for_each_cpu() Previously evlist__for_each_cpu() needed to iterate over the evlist in an inner loop and call "skip" routines. Refactor this so that the iteratr is smarter and the next function can update both the current CPU and evsel. By using a cpu map index, fix apparent off-by-1 in __run_perf_stat's call to perf_evsel__close_cpu(). Signed-off-by: Ian Rogers <irogers@google.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@redhat.com> 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: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Mike Leach <mike.leach@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Clarke <pc@us.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Riccardo Mancini <rickyman7@gmail.com> Cc: Stephane Eranian <eranian@google.com> Cc: Suzuki Poulouse <suzuki.poulose@arm.com> Cc: Vineet Singh <vineet.singh@intel.com> Cc: coresight@lists.linaro.org Cc: linux-arm-kernel@lists.infradead.org Cc: zhengjun.xing@intel.com Link: https://lore.kernel.org/r/20220105061351.120843-35-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
e69dc842 |
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09-Sep-2021 |
Jin Yao <yao.jin@linux.intel.com> |
perf stat: Support --cputype option for hybrid events In previous patch, we have supported the syntax which enables the event on a specified pmu, such as: cpu_core/<event>/ cpu_atom/<event>/ While this syntax is not very easy for applying on a set of events or applying on a group. In following example, we have to explicitly assign the pmu prefix. # ./perf stat -e '{cpu_core/cycles/,cpu_core/instructions/}' -- sleep 1 Performance counter stats for 'sleep 1': 1,158,545 cpu_core/cycles/ 1,003,113 cpu_core/instructions/ 1.002428712 seconds time elapsed A much easier way is: # ./perf stat --cputype core -e '{cycles,instructions}' -- sleep 1 Performance counter stats for 'sleep 1': 1,101,071 cpu_core/cycles/ 939,892 cpu_core/instructions/ 1.002363142 seconds time elapsed For this example, the '--cputype' enables the events from specified pmu (cpu_core). If '--cputype' conflicts with pmu prefix, '--cputype' is ignored. # ./perf stat --cputype core -e cycles,cpu_atom/instructions/ -a -- sleep 1 Performance counter stats for 'system wide': 21,003,407 cpu_core/cycles/ 367,886 cpu_atom/instructions/ 1.002203520 seconds time elapsed Signed-off-by: Jin Yao <yao.jin@linux.intel.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/20210909062215.10278-1-yao.jin@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
94dbfd67 |
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30-Nov-2021 |
Ian Rogers <irogers@google.com> |
perf parse-events: Architecture specific leader override Currently topdown events must appear after a slots event: $ perf stat -e '{slots,topdown-fe-bound}' /bin/true Performance counter stats for '/bin/true': 3,183,090 slots 986,133 topdown-fe-bound Reversing the events yields: $ perf stat -e '{topdown-fe-bound,slots}' /bin/true Error: The sys_perf_event_open() syscall returned with 22 (Invalid argument) for event (topdown-fe-bound). For metrics the order of events is determined by iterating over a hashmap, and so slots isn't guaranteed to be first which can yield this error. Change the set_leader in parse-events, called when a group is closed, so that rather than always making the first event the leader, if the slots event exists then it is made the leader. It is then moved to the head of the evlist otherwise it won't be opened in the correct order. The result is: $ perf stat -e '{topdown-fe-bound,slots}' /bin/true Performance counter stats for '/bin/true': 3,274,795 slots 1,001,702 topdown-fe-bound A problem with this approach is the slots event is identified by name, names can be overwritten like 'cpu/slots,name=foo/' and this causes the leader change to fail. The change also modifies and fixes mixed groups like, with the change: $ perf stat -e '{instructions,slots,topdown-fe-bound}' -a -- sleep 2 Performance counter stats for 'system wide': 5574985410 slots 971981616 instructions 1348461887 topdown-fe-bound 2.001263120 seconds time elapsed Without the change: $ perf stat -e '{instructions,slots,topdown-fe-bound}' -a -- sleep 2 Performance counter stats for 'system wide': <not counted> instructions <not counted> slots <not supported> topdown-fe-bound 2.006247990 seconds time elapsed Something that may be undesirable here is that the events are reordered in the output. Reviewed-by: Kajol Jain <kjain@linux.ibm.com> Signed-off-by: Ian Rogers <irogers@google.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: John Garry <john.garry@huawei.com> Cc: Kajol Jain <kjain@linux.ibm.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Clarke <pc@us.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Riccardo Mancini <rickyman7@gmail.com> Cc: Stephane Eranian <eranian@google.com> Cc: Vineet Singh <vineet.singh@intel.com> Link: http://lore.kernel.org/lkml/20211130174945.247604-2-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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79e7ed56 |
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21-Aug-2021 |
Riccardo Mancini <rickyman7@gmail.com> |
perf evlist: Add evlist__for_each_entry_from() macro This patch adds a new iteration macro for evlist that resumes iteration from a given evsel in the evlist. This macro will be used in the workqueue series. Signed-off-by: Riccardo Mancini <rickyman7@gmail.com> Cc: Ian Rogers <irogers@google.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/2386505f8b598adf0dbcd04ec21804c6bcf00826.1629490974.git.rickyman7@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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2e6263ab |
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06-Jul-2021 |
Jiri Olsa <jolsa@redhat.com> |
libperf: Adopt evlist__set_leader() from tools/perf as perf_evlist__set_leader() Move the implementation of evlist__set_leader() to a new libperf perf_evlist__set_leader() function with the same functionality make it a libperf exported API. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Requested-by: Shunsuke Nakamura <nakamura.shun@fujitsu.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20210706151704.73662-6-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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3a683120 |
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06-Jul-2021 |
Jiri Olsa <jolsa@redhat.com> |
libperf: Move 'nr_groups' from tools/perf to evlist::nr_groups Move evsel::nr_groups to perf_evsel::nr_groups, so we can move the group interface to libperf. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Requested-by: Shunsuke Nakamura <nakamura.shun@fujitsu.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20210706151704.73662-5-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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d5a8bd0f |
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26-May-2021 |
Jin Yao <yao.jin@linux.intel.com> |
perf mem: Disable 'mem-loads-aux' group before reporting For some platforms, such as Alderlake, the 'mem-loads' event is required to use together with 'mem-loads-aux' within a group and 'mem-loads-aux' must be the group leader. Now we disable this group before reporting because 'mem-loads-aux' is just an auxiliary event. It doesn't carry any valid memory load result. If we show the 'mem-loads-aux' + 'mem-loads' as a group in report, it needs many of changes but they are totally unnecessary. Signed-off-by: Jin Yao <yao.jin@linux.intel.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Kan Liang <kan.liang@intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lore.kernel.org/r/20210527001610.10553-8-yao.jin@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
9865ea8a |
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14-Apr-2021 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Add a method to return the list of evsels as a string Add a 'scnprintf' method to obtain the list of evsels in a evlist as a string, excluding the "dummy" event used for things like receiving metadata events (PERF_RECORD_FORK, MMAP, etc) when synthesizing preexisting threads. Will be used to improve the error message for workload failure in 'perf record. Acked-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lore.kernel.org/lkml/20210414131628.2064862-2-acme@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
e16c2ce7 |
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04-Feb-2021 |
Yang Jihong <yangjihong1@huawei.com> |
perf record: Fix continue profiling after draining the buffer Commit da231338ec9c0987 ("perf record: Use an eventfd to wakeup when done") uses eventfd() to solve a rare race where the setting and checking of 'done' which add done_fd to pollfd. When draining buffer, revents of done_fd is 0 and evlist__filter_pollfd function returns a non-zero value. As a result, perf record does not stop profiling. The following simple scenarios can trigger this condition: # sleep 10 & # perf record -p $! After the sleep process exits, perf record should stop profiling and exit. However, perf record keeps running. If pollfd revents contains only POLLERR or POLLHUP, perf record indicates that buffer is draining and need to stop profiling. Use fdarray_flag__nonfilterable() to set done eventfd to nonfilterable objects, so that evlist__filter_pollfd() does not filter and check done eventfd. Fixes: da231338ec9c0987 ("perf record: Use an eventfd to wakeup when done") Signed-off-by: Yang Jihong <yangjihong1@huawei.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Tested-by: Jiri Olsa <jolsa@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: zhangjinhao2@huawei.com Link: http://lore.kernel.org/lkml/20210205065001.23252-1-yangjihong1@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
42641d6f |
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21-Jan-2021 |
Kan Liang <kan.liang@linux.intel.com> |
perf stat: Add Topdown metrics events as default events The Topdown Microarchitecture Analysis (TMA) Method is a structured analysis methodology to identify critical performance bottlenecks in out-of-order processors. From the Ice Lake and later platforms, the Topdown information can be retrieved from the dedicated "metrics" register, which isn't impacted by other events. Also, the Topdown metrics support both per thread/process and per core measuring. Adding Topdown metrics events as default events can enrich the default measuring information, and would not cost any extra multiplexing. Introduce arch_evlist__add_default_attrs() to allow architecture specific default events. Add the Topdown metrics events in the X86 specific arch_evlist__add_default_attrs(). Other architectures can add their own default events later separately. With the patch: $ perf stat sleep 1 Performance counter stats for 'sleep 1': 0.82 msec task-clock:u # 0.001 CPUs utilized 0 context-switches:u # 0.000 K/sec 0 cpu-migrations:u # 0.000 K/sec 61 page-faults:u # 0.074 M/sec 319,941 cycles:u # 0.388 GHz 242,802 instructions:u # 0.76 insn per cycle 54,380 branches:u # 66.028 M/sec 4,043 branch-misses:u # 7.43% of all branches 1,585,555 slots:u # 1925.189 M/sec 238,941 topdown-retiring:u # 15.0% retiring 410,378 topdown-bad-spec:u # 25.8% bad speculation 634,222 topdown-fe-bound:u # 39.9% frontend bound 304,675 topdown-be-bound:u # 19.2% backend bound 1.001791625 seconds time elapsed 0.000000000 seconds user 0.001572000 seconds sys Signed-off-by: Kan Liang <kan.liang@linux.intel.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lore.kernel.org/lkml/20210121133752.118327-1-kan.liang@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
47fddcb4 |
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26-Dec-2020 |
Jiri Olsa <jolsa@kernel.org> |
perf tools: Add 'ping' control command Add a control 'ping' command to detect if perf is up and its control interface is operational. It will be used in following daemon patches to synchronize with record session - when control interface is up and running, we know that perf record is monitoring and ready to receive signals. Example session: terminal 1: # mkfifo control ack # perf record --control=fifo:control,ack terminal 2: # echo ping > control # cat ack ack Signed-off-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexei Budankov <abudankov@huawei.com> Cc: Ian Rogers <irogers@google.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lore.kernel.org/lkml/20201226232038.390883-5-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
f186cd61 |
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26-Dec-2020 |
Jiri Olsa <jolsa@kernel.org> |
perf tools: Add 'stop' control command Adding control 'stop' command to stop perf record. When it is received, perf will set the 'done' variable to 1 to stop its mmap ring buffer reading loop. Example session: terminal 1: # mkfifo control ack # perf record --control=fifo:control,ack terminal 2: # echo stop > control terminal 1: [ perf record: Woken up 7 times to write data ] [ perf record: Captured and wrote 3.214 MB perf.data (38280 samples) ] # Signed-off-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexei Budankov <abudankov@huawei.com> Cc: Ian Rogers <irogers@google.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lore.kernel.org/lkml/20201226232038.390883-4-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
142544a9 |
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26-Dec-2020 |
Jiri Olsa <jolsa@kernel.org> |
perf tools: Add 'evlist' control command Add a new 'evlist' control command to display all the evlist events. When it is received, perf will scan and print current evlist into perf record terminal. The interface string for control file is: evlist [-v|-g|-F] The syntax follows perf evlist command: -F Show just the sample frequency used for each event. -v Show all fields. -g Show event group information. Example session: terminal 1: # mkfifo control ack # perf record --control=fifo:control,ack -e '{cycles,instructions}' terminal 2: # echo evlist > control terminal 1: cycles instructions dummy:HG terminal 2: # echo 'evlist -v' > control terminal 1: cycles: size: 120, { sample_period, sample_freq }: 4000, sample_type: \ IP|TID|TIME|ID|CPU|PERIOD, read_format: ID, disabled: 1, inherit: 1, freq: 1, \ sample_id_all: 1, exclude_guest: 1 instructions: size: 120, config: 0x1, { sample_period, sample_freq }: 4000, \ sample_type: IP|TID|TIME|ID|CPU|PERIOD, read_format: ID, inherit: 1, freq: 1, \ sample_id_all: 1, exclude_guest: 1 dummy:HG: type: 1, size: 120, config: 0x9, { sample_period, sample_freq }: 4000, \ sample_type: IP|TID|TIME|ID|CPU|PERIOD, read_format: ID, inherit: 1, mmap: 1, \ comm: 1, freq: 1, task: 1, sample_id_all: 1, mmap2: 1, comm_exec: 1, ksymbol: 1, \ bpf_event: 1 terminal 2: # echo 'evlist -g' > control terminal 1: {cycles,instructions} dummy:HG terminal 2: # echo 'evlist -F' > control terminal 1: cycles: sample_freq=4000 instructions: sample_freq=4000 dummy:HG: sample_freq=4000 This new evlist command is handy to get real event names when wildcards are used. Adding evsel_fprintf.c object to python/perf.so build, because it's now evlist.c dependency. Adding PYTHON_PERF define for python/perf.so compilation, so we can use it to compile in only evsel__fprintf from evsel_fprintf.c object. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexei Budankov <abudankov@huawei.com> Cc: Ian Rogers <irogers@google.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lore.kernel.org/lkml/20201226232038.390883-3-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
7cfcd1e0 |
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10-Dec-2020 |
Jiri Olsa <jolsa@kernel.org> |
perf tools: Add evlist__disable_evsel/evlist__enable_evsel Adding interface to enable/disable single event in the evlist based on its name. It will be used later in new control enable/disable interface. Keeping the evlist::enabled true when one or more events are enabled so the toggle can work properly and toggle evlist to disabled state. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Acked-by: Namhyung Kim <namhyung@kernel.org> Acked-by: Alexei Budankov <abudankov@huawei.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Stephane Eranian <eranian@google.com> Link: https://lore.kernel.org/r/20201210204330.233864-2-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
1420ba2f |
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30-Nov-2020 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Use the right prefix for 'struct evlist' header methods perf_evlist__ is for 'struct perf_evlist' methods, in tools/lib/perf/, go on completing this split. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
25f84702 |
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30-Nov-2020 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Use the right prefix for 'struct evlist' mmap pages parsing method perf_evlist__ is for 'struct perf_evlist' methods, in tools/lib/perf/, go on completing this split. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
78e1bc25 |
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30-Nov-2020 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Use the right prefix for 'struct evlist' event attribute config methods perf_evlist__ is for 'struct perf_evlist' methods, in tools/lib/perf/, go on completing this split. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
606e2c29 |
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30-Nov-2020 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Use the right prefix for alternative 'struct evlist' constructors perf_evlist__ is for 'struct perf_evlist' methods, in tools/lib/perf/, go on completing this split. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
900c8ead |
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30-Nov-2020 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Use the right prefix for 'struct evlist' event selection methods perf_evlist__ is for 'struct perf_evlist' methods, in tools/lib/perf/, go on completing this split. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
64b4778b |
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30-Nov-2020 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Use the right prefix for 'struct evlist' event group methods perf_evlist__ is for 'struct perf_evlist' methods, in tools/lib/perf/, go on completing this split. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
7748bb71 |
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30-Nov-2020 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Use the right prefix for 'struct evlist' create maps methods perf_evlist__ is for 'struct perf_evlist' methods, in tools/lib/perf/, go on completing this split. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
e414fd1a |
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30-Nov-2020 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Use the right prefix for 'struct evlist' evsel list methods perf_evlist__ is for 'struct perf_evlist' methods, in tools/lib/perf/, go on completing this split. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
37b01abe |
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30-Nov-2020 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Use the right prefix for 'struct evlist' enable event methods perf_evlist__ is for 'struct perf_evlist' methods, in tools/lib/perf/, go on completing this split. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
0a7e7ec9 |
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30-Nov-2020 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Use the right prefix for 'struct evlist' id_pos methods perf_evlist__ is for 'struct perf_evlist' methods, in tools/lib/perf/, go on completing this split. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
e80db255 |
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30-Nov-2020 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Use the right prefix for 'struct evlist' tracking event methods perf_evlist__ is for 'struct perf_evlist' methods, in tools/lib/perf/, go on completing this split. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
3ccf8a7b |
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30-Nov-2020 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Use the right prefix for 'struct evlist' sample id lookup methods perf_evlist__ is for 'struct perf_evlist' methods, in tools/lib/perf/, go on completing this split. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
fd643db5 |
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30-Nov-2020 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Ditch unused set/reset sample_bit methods Not used anymore, ditch them. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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b02736f7 |
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30-Nov-2020 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Use the right prefix for 'struct evlist' 'find' methods perf_evlist__ is for 'struct perf_evlist' methods, in tools/lib/perf/, go on completing this split. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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2a6599cd |
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30-Nov-2020 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Use the right prefix for 'struct evlist' sample parsing methods perf_evlist__ is for 'struct perf_evlist' methods, in tools/lib/perf/, go on completing this split. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
08c83997 |
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30-Nov-2020 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Use the right prefix for 'struct evlist' sideband thread methods perf_evlist__ is for 'struct perf_evlist' methods, in tools/lib/perf/, go on completing this split. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
24bf91a7 |
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30-Nov-2020 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Use the right prefix for 'struct evlist' 'filter' methods perf_evlist__ is for 'struct perf_evlist' methods, in tools/lib/perf/, go on completing this split. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
ade9d208 |
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30-Nov-2020 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Use the right prefix for 'struct evlist' 'toggle' methods perf_evlist__ is for 'struct perf_evlist' methods, in tools/lib/perf/, go on completing this split. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
7b392ef0 |
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30-Nov-2020 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Use the right prefix for 'struct evlist' 'workload' methods perf_evlist__ is for 'struct perf_evlist' methods, in tools/lib/perf/, go on completing this split. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
a622eafa |
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30-Nov-2020 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Use the right prefix for 'struct evlist' methods: evlist__set_leader() perf_evlist__ is for 'struct perf_evlist' methods, in tools/lib/perf/, go on completing this split. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
b214ba8c |
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24-Sep-2020 |
Namhyung Kim <namhyung@kernel.org> |
perf tools: Copy metric events properly when expand cgroups The metricgroup__copy_metric_events() is to handle metrics events when expanding event for cgroups. As the metric events keep pointers to evsel, it should be refreshed when events are cloned during the operation. The perf_stat__collect_metric_expr() is also called in case an event has a metric directly. During the copy, it references evsel by index as the evlist now has cloned evsels for the given cgroup. Also kernel test robot found an issue in the python module import so add empty implementations of those two functions to fix it. Reported-by: kernel test robot <rong.a.chen@intel.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Acked-by: Jiri Olsa <jolsa@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: John Garry <john.garry@huawei.com> Cc: Kajol Jain <kjain@linux.ibm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lore.kernel.org/lkml/20200924124455.336326-4-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
ee7fe31e |
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03-Sep-2020 |
Adrian Hunter <adrian.hunter@intel.com> |
perf tools: Consolidate close_control_option()'s into one function Consolidate control option fifo closing into one function. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Suggested-by: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lore.kernel.org/lkml/20200903122937.25691-1-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
d20aff15 |
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31-Aug-2020 |
Adrian Hunter <adrian.hunter@intel.com> |
perf record: Add 'snapshot' control command Add 'snapshot' control command to create an AUX area tracing snapshot the same as if sending SIGUSR2. The advantage of the FIFO is that access is governed by access to the FIFO. Example: $ mkfifo perf.control $ mkfifo perf.ack $ cat perf.ack & [1] 15235 $ sudo ~/bin/perf record --control fifo:perf.control,perf.ack -S -e intel_pt//u -- sleep 60 & [2] 15243 $ ps -e | grep perf 15244 pts/1 00:00:00 perf $ kill -USR2 15244 bash: kill: (15244) - Operation not permitted $ echo snapshot > perf.control ack $ Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Alexey Budankov <alexey.budankov@linux.intel.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lore.kernel.org/lkml/20200901093758.32293-6-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
a8fcbd26 |
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02-Sep-2020 |
Adrian Hunter <adrian.hunter@intel.com> |
perf tools: Add FIFO file names as alternative options to --control Enable the --control option to accept file names as an alternative to file descriptors. Example: $ mkfifo perf.control $ mkfifo perf.ack $ cat perf.ack & [1] 6808 $ perf record --control fifo:perf.control,perf.ack -- sleep 300 & [2] 6810 $ echo disable > perf.control $ Events disabled ack $ echo enable > perf.control $ Events enabled ack $ echo disable > perf.control $ Events disabled ack $ kill %2 [ perf record: Woken up 4 times to write data ] $ [ perf record: Captured and wrote 0.018 MB perf.data (7 samples) ] [1]- Done cat perf.ack [2]+ Terminated perf record --control fifo:perf.control,perf.ack -- sleep 300 $ Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Alexey Budankov <alexey.budankov@linux.intel.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lore.kernel.org/lkml/20200902105707.11491-1-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
9864a66d |
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31-Aug-2020 |
Adrian Hunter <adrian.hunter@intel.com> |
perf tools: Consolidate --control option parsing into one function Consolidate --control option parsing into one function, in preparation for adding FIFO file name options. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Alexey Budankov <alexey.budankov@linux.intel.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lore.kernel.org/lkml/20200901093758.32293-2-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
2162b9c6 |
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17-Jul-2020 |
Alexey Budankov <alexey.budankov@linux.intel.com> |
perf stat: extend -D,--delay option with -1 value Extend -D,--delay option with -1 value to start monitoring with events disabled to be enabled later by enable command provided via control file descriptor. Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/81ac633c-a844-5cfb-931c-820f6e6cbd12@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
ec886bf5 |
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17-Jul-2020 |
Alexey Budankov <alexey.budankov@linux.intel.com> |
perf evlist: Implement control command handling functions Implement functions of initialization, finalization and processing of control command messages coming from control file descriptors. Allocate control file descriptor as descriptor at struct pollfd object of evsel_list for atomic poll() operation. Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/62518ceb-1cc9-2aba-593b-55408d07c1bf@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
8ab705b5 |
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17-Jul-2020 |
Alexey Budankov <alexey.budankov@linux.intel.com> |
perf evlist: Introduce control file descriptors Define and initialize control file descriptors. Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/0dd4f544-2610-96d6-1bdb-6582bdc3dc2c@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
442ad225 |
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28-Jun-2020 |
Adrian Hunter <adrian.hunter@intel.com> |
perf record: Fix duplicated sideband events with Intel PT system wide tracing Commit 0a892c1c9472 ("perf record: Add dummy event during system wide synthesis") reveals an issue with Intel PT system wide tracing. Specifically that Intel PT already adds a dummy tracking event, and it is not the first event. Adding another dummy tracking event causes duplicated sideband events. Fix by checking for an existing dummy tracking event first. Example showing duplicated switch events: Before: # perf record -a -e intel_pt//u uname Linux [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.895 MB perf.data ] # perf script --no-itrace --show-switch-events | head swapper 0 [007] 6390.516222: PERF_RECORD_SWITCH_CPU_WIDE OUT preempt next pid/tid: 11/11 swapper 0 [007] 6390.516222: PERF_RECORD_SWITCH_CPU_WIDE OUT preempt next pid/tid: 11/11 rcu_sched 11 [007] 6390.516223: PERF_RECORD_SWITCH_CPU_WIDE IN prev pid/tid: 0/0 rcu_sched 11 [007] 6390.516224: PERF_RECORD_SWITCH_CPU_WIDE IN prev pid/tid: 0/0 rcu_sched 11 [007] 6390.516227: PERF_RECORD_SWITCH_CPU_WIDE OUT next pid/tid: 0/0 rcu_sched 11 [007] 6390.516227: PERF_RECORD_SWITCH_CPU_WIDE OUT next pid/tid: 0/0 swapper 0 [007] 6390.516228: PERF_RECORD_SWITCH_CPU_WIDE IN prev pid/tid: 11/11 swapper 0 [007] 6390.516228: PERF_RECORD_SWITCH_CPU_WIDE IN prev pid/tid: 11/11 swapper 0 [002] 6390.516415: PERF_RECORD_SWITCH_CPU_WIDE OUT preempt next pid/tid: 5556/5559 swapper 0 [002] 6390.516416: PERF_RECORD_SWITCH_CPU_WIDE OUT preempt next pid/tid: 5556/5559 After: # perf record -a -e intel_pt//u uname Linux [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.868 MB perf.data ] # perf script --no-itrace --show-switch-events | head swapper 0 [005] 6450.567013: PERF_RECORD_SWITCH_CPU_WIDE OUT preempt next pid/tid: 7179/7181 perf 7181 [005] 6450.567014: PERF_RECORD_SWITCH_CPU_WIDE IN prev pid/tid: 0/0 perf 7181 [005] 6450.567028: PERF_RECORD_SWITCH_CPU_WIDE OUT next pid/tid: 0/0 swapper 0 [005] 6450.567029: PERF_RECORD_SWITCH_CPU_WIDE IN prev pid/tid: 7179/7181 swapper 0 [005] 6450.571699: PERF_RECORD_SWITCH_CPU_WIDE OUT preempt next pid/tid: 11/11 rcu_sched 11 [005] 6450.571700: PERF_RECORD_SWITCH_CPU_WIDE IN prev pid/tid: 0/0 rcu_sched 11 [005] 6450.571702: PERF_RECORD_SWITCH_CPU_WIDE OUT next pid/tid: 0/0 swapper 0 [005] 6450.571703: PERF_RECORD_SWITCH_CPU_WIDE IN prev pid/tid: 11/11 swapper 0 [005] 6450.579703: PERF_RECORD_SWITCH_CPU_WIDE OUT preempt next pid/tid: 11/11 rcu_sched 11 [005] 6450.579704: PERF_RECORD_SWITCH_CPU_WIDE IN prev pid/tid: 0/0 Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200629091955.17090-3-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
92c7d7cd |
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17-Jun-2020 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Fix the class prefix for 'struct evlist' branch_type methods To differentiate from libperf's 'struct perf_evlist' methods. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
8cedf3a5 |
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17-Jun-2020 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Fix the class prefix for 'struct evlist' sample_id_all methods To differentiate from libperf's 'struct perf_evlist' methods. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
b3c2cc2b |
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17-Jun-2020 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Fix the class prefix for 'struct evlist' sample_type methods To differentiate from libperf's 'struct perf_evlist' methods. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
d1f249ec |
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17-Jun-2020 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Fix the class prefix for 'struct evlist' strerror methods To differentiate from libperf's 'struct perf_evlist' methods. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
e251abee |
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17-Jun-2020 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Fix the class prefix for 'struct evlist' 'add' evsel methods To differentiate from libperf's 'struct perf_evlist' methods. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
65ddce3f |
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29-Apr-2020 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evsel: Rename 'struct perf_evsel__sb_cb_t' to 'struct evsel__sb_cb_t' As the "perf_" prefix should be restricted to functions and types in tools/lib/perf/, aka libperf, this way we reduce a bit the confusion for types only in libperf or the ones in the more contained tools/perf/ project. 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> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
976be845 |
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27-Apr-2020 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Allow reusing the side band thread for more purposes I.e. so far we had just one event in that side band thread, a dummy one with attr.bpf_event set, so that 'perf record' can go ahead and ask the kernel for further information about BPF programs being loaded. Allow for more than one event to be there, so that we can use it as well for the upcoming --switch-output-event feature. Acked-by: Jiri Olsa <jolsa@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Song Liu <songliubraving@fb.com> Link: http://lore.kernel.org/lkml/20200429131106.27974-6-acme@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
b38d85ef |
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23-Apr-2020 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf bpf: Decouple creating the evlist from adding the SB event Renaming bpf_event__add_sb_event() to evlist__add_sb_event() and requiring that the evlist be allocated beforehand. This will allow using the same side band thread and evlist to be used for multiple purposes in addition to react to PERF_RECORD_BPF_EVENT soon after they are generated. Acked-by: Jiri Olsa <jolsa@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Song Liu <songliubraving@fb.com> Link: http://lore.kernel.org/lkml/20200429131106.27974-4-acme@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
40c7d246 |
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05-May-2020 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Move routines that probe for perf API features to separate file Trying to disentangle this a bit further, unfortunately it uses parse_events(), its interesting to have it separated anyway, so do it. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
4804e011 |
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20-Nov-2019 |
Andi Kleen <ak@linux.intel.com> |
perf stat: Use affinity for opening events Restructure the event opening in perf stat to cycle through the events by CPU after setting affinity to that CPU. This eliminates IPI overhead in the perf API. We have to loop through the CPU in the outter builtin-stat code instead of leaving that to low level functions. It has to change the weak group fallback strategy slightly. Since we cannot easily undo the opens for other CPUs move the weak group retry to a separate loop. Before with a large test case with 94 CPUs: % time seconds usecs/call calls errors syscall ------ ----------- ----------- --------- --------- ---------------- 42.75 4.050910 67 60046 110 perf_event_open After: 26.86 0.944396 16 58069 110 perf_event_open (the number changes slightly because the weak group retries work differently and the test case relies on weak groups) Committer notes: Added one of the hunks in a patch provided by Andi after I noticed that the "event times" 'perf test' entry was segfaulting. Signed-off-by: Andi Kleen <ak@linux.intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Link: http://lore.kernel.org/lkml/20191121001522.180827-10-andi@firstfloor.org Link: http://lore.kernel.org/lkml/20191127232657.GL84886@tassilo.jf.intel.com # Fix Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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a8cbe40f |
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20-Nov-2019 |
Andi Kleen <ak@linux.intel.com> |
perf evsel: Add iterator to iterate over events ordered by CPU Add some common code that is needed to iterate over all events in CPU order. Used in followon patches Signed-off-by: Andi Kleen <ak@linux.intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Link: http://lore.kernel.org/lkml/20191121001522.180827-6-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
9bca1a4e |
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15-Nov-2019 |
Adrian Hunter <adrian.hunter@intel.com> |
perf record: Add a function to test for kernel support for AUX area sampling Architectures are expected to know if AUX area sampling is supported by the hardware. Add a function perf_can_aux_sample() which will determine whether the kernel supports it. Committer notes: I reported that this message was taking place on a kernel without the required bits: # perf record --aux-sample -e '{intel_pt//u,branch-misses:u}' Error: The sys_perf_event_open() syscall returned with 7 (Argument list too long) for event (branch-misses:u). /bin/dmesg | grep -i perf may provide additional information. Adrian sent a patch addressing it, with this explanation: ---- perf_can_aux_sample_size() always returned true because it did not pass the attribute size to sys_perf_event_open, nor correctly check the return value and errno. ---- After applying it I get, later in the series, when --aux-sample is added: # perf record --aux-sample -e '{intel_pt//u,branch-misses:u}' AUX area sampling is not supported by kernel Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20191115124225.5247-4-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
1827ab5b |
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07-Oct-2019 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Introduce append_tp_filter_pid() and append_tp_filter_pids() We'll need this to support 'perf trace e tracepoint --filter=expr', as the command line tracepoint filter is attache to the preceding evsel, just like in 'perf record' and when we go to set pid filters, which we do at the minimum to filter 'perf trace' own syscalls, we need to append, not set the tp filter. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Luis Cláudio Gonçalves <lclaudio@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-daynpknni44ywuzi8iua57nn@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
53c92f73 |
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07-Oct-2019 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Introduce append_tp_filter() method Will be used by 'perf trace' to support 'perf trace --filter', we need to append to any pre-existing filter. When parse_filter() gets invoked to process --filter, it'll set the filter to that specified on the command line, later on, when we filter out 'perf trace' own pid to avoid an event feedback loop, we need to preserve the command line filter put in place by parse_filter(). Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Luis Cláudio Gonçalves <lclaudio@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-h9rot08qmxlnfmte0holt68x@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
c0e53476 |
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01-Oct-2019 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Adopt __set_tracepoint_handlers method from perf_session It all operates on the evsels in the session's evlist, so move it to the evlist layer to make it useful to tools not using perf_session, just evlists, like 'perf trace' in live mode. 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-9oc53gnfi53vg82fvolkm85g@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
bd704620 |
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24-Sep-2019 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Remove unused perf_evlist__fprintf() method Ditch it, noone is using it, one more stdio.h include in a hot header. Fix the fallout in parse-events.y, where we end up using a FILE pointer, I think due to YYDEBUG being set and in some places, like Amazon Linux 1 we don't get stdio.h included by luck, like in most other places, add a explicit stdio.h include directive. 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-37k5q0lhdbo2hvvfbnnzn7og@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
80ab2987 |
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31-Aug-2019 |
Jiri Olsa <jolsa@kernel.org> |
libperf: Add perf_evlist__poll() function Move perf_evlist__poll() from tools/perf to libperf, it will be used in the following patches. And rename the existing perf's function to evlist__poll(). 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 <a.p.zijlstra@chello.nl> Link: http://lore.kernel.org/lkml/20190913132355.21634-39-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
f4009e7b |
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16-Aug-2019 |
Jiri Olsa <jolsa@kernel.org> |
libperf: Add perf_evlist__add_pollfd() function Move perf_evlist__add_pollfd() from tools/perf to libperf, it will be used in the following patches. Also rename perf's perf_evlist__add_pollfd()/perf_evlist__filter_pollfd() to evlist__add_pollfd()/evlist__filter_pollfd(). 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 <a.p.zijlstra@chello.nl> Link: http://lore.kernel.org/lkml/20190913132355.21634-38-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
31f67fc4 |
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06-Aug-2019 |
Jiri Olsa <jolsa@kernel.org> |
libperf: Add perf_evlist__alloc_pollfd() function Move perf_evlist__alloc_pollfd() from tools/perf to libperf, it will be used in the following patches. 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 <a.p.zijlstra@chello.nl> Link: http://lore.kernel.org/lkml/20190913132355.21634-37-jolsa@kernel.org [ Added api/fd/array.h include to the lib/evlist.c file ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
d5a99483 |
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03-Sep-2019 |
Jiri Olsa <jolsa@kernel.org> |
libperf: Add perf_evlist__id_add_fd() function Add the perf_evlist__id_add_fd() function to libperf as an internal function. 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 <a.p.zijlstra@chello.nl> Link: http://lore.kernel.org/lkml/20190913132355.21634-32-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
b0031c22 |
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03-Sep-2019 |
Jiri Olsa <jolsa@kernel.org> |
libperf: Add perf_evlist__id_add() function Add the perf_evlist__id_add() function to libperf as an internal function. We already have the 'heads' member in 'struct perf_evlist'. 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 <a.p.zijlstra@chello.nl> Link: http://lore.kernel.org/lkml/20190913132355.21634-31-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
ff47d86a |
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03-Sep-2019 |
Jiri Olsa <jolsa@kernel.org> |
libperf: Add perf_evlist__read_format() function Add the perf_evlist__read_format() function to libperf as internal function. 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 <a.p.zijlstra@chello.nl> Link: http://lore.kernel.org/lkml/20190913132355.21634-30-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
515dbe48 |
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03-Sep-2019 |
Jiri Olsa <jolsa@kernel.org> |
libperf: Add perf_evlist__first()/last() functions Add perf_evlist__first()/last() functions to libperf, as internal functions and rename perf's origins to evlist__first/last. 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 <a.p.zijlstra@chello.nl> Link: http://lore.kernel.org/lkml/20190913132355.21634-29-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
1d5af02d |
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02-Sep-2019 |
Jiri Olsa <jolsa@kernel.org> |
libperf: Move 'heads' from 'struct evlist' to 'struct perf_evlist' Move 'heads' hash table from 'struct evlist' to 'struct perf_evlist'. 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 <a.p.zijlstra@chello.nl> Link: http://lore.kernel.org/lkml/20190913132355.21634-27-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
40cb2d51 |
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06-Aug-2019 |
Jiri Olsa <jolsa@kernel.org> |
libperf: Move 'pollfd' from 'struct evlist' to 'struct perf_evlist' Moving 'pollfd' from 'struct evlist' to 'struct perf_evlist' it will be used in following patches. 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 <a.p.zijlstra@chello.nl> Link: http://lore.kernel.org/lkml/20190913132355.21634-23-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
f6fa4375 |
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06-Aug-2019 |
Jiri Olsa <jolsa@kernel.org> |
libperf: Move 'mmap_len' from 'struct evlist' to 'struct perf_evlist' Moving 'mmap_len' from 'struct evlist' to 'struct perf_evlist' it will be used in following patches. 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 <a.p.zijlstra@chello.nl> Link: http://lore.kernel.org/lkml/20190913132355.21634-22-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
c976ee11 |
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30-Jul-2019 |
Jiri Olsa <jolsa@kernel.org> |
libperf: Move 'nr_mmaps' from 'struct evlist' to 'struct perf_evlist' Moving 'nr_mmaps' from 'struct evlist' to 'struct perf_evlist', it will be used in following patches. 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 <a.p.zijlstra@chello.nl> Link: http://lore.kernel.org/lkml/20190913132355.21634-21-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
e0fcfb08 |
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22-Sep-2019 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Adopt backwards ring buffer state enum As this isn't used at all in mmap.h but in evlist.h, so to cut down the header dependency tree, move it to where it is used. Also add mmap.h to the places using it but previously getting it indirectly via evlist.h. Add missing pthread.h to evlist.h, as it has a pthread_t struct member and was getting the header via mmap.h. Noticed while processing a Jiri's libperf batch touching mmap.h, where almost everything gets rebuilt because evlist.h is so popular, so cut down't this rebuild the world party. 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-he0uljeftl0xfveh3d6vtode@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
470579b0 |
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02-Sep-2019 |
Jiri Olsa <jolsa@kernel.org> |
perf tools: Rename perf_evlist__exit() to evlist__exit() Rename perf_evlist__exit() to evlist__exit(), so we don't have a name clash when we add perf_evlist__exit() to libperf. 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 <a.p.zijlstra@chello.nl> Link: http://lore.kernel.org/lkml/20190913132355.21634-8-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
db6b7b13 |
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16-Aug-2019 |
Jiri Olsa <jolsa@kernel.org> |
perf tools: Rename perf_evlist__munmap() to evlist__munmap() Rename perf_evlist__munmap() to evlist__munmap(), so we don't have a name clash when we add perf_evlist__munmap() in libperf. 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 <a.p.zijlstra@chello.nl> Link: http://lore.kernel.org/lkml/20190913132355.21634-6-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
9521b5f2 |
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27-Jul-2019 |
Jiri Olsa <jolsa@kernel.org> |
perf tools: Rename perf_evlist__mmap() to evlist__mmap() Rename perf_evlist__mmap() to evlist__mmap(), so we don't have a name clash when we add perf_evlist__mmap() in libperf. 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 <a.p.zijlstra@chello.nl> Link: http://lore.kernel.org/lkml/20190913132355.21634-5-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
a5830532 |
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27-Jul-2019 |
Jiri Olsa <jolsa@kernel.org> |
perf tools: Rename 'struct perf_mmap' to 'struct mmap' Rename 'struct perf_evlist' to 'struct evlist', so we don't have a name clash when we add 'struct perf_mmap' to libperf. 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 <a.p.zijlstra@chello.nl> Link: http://lore.kernel.org/lkml/20190913132355.21634-4-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
47729258 |
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30-Aug-2019 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Move 'struct events_stats' and prototypes to separate header This will allow us to untangle the header dependency a bit more, as some places will not need event.h anymore. 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-enqncj29ovzaat3cd9203rwl@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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#
2da39f1c |
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27-Aug-2019 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Remove needless util.h from evlist.h There is no need for that util/util.h include there and, remove it, pruning the include tree, fix the fallout by adding necessary headers to places that were getting needed includes indirectly from evlist.h -> util.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-s9f7uve8wvykr5itcm7m7d8q@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
453fa030 |
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21-Jul-2019 |
Jiri Olsa <jolsa@kernel.org> |
libperf: Add perf_evlist__set_maps() function Move the evlist__set_maps() function from tools/perf to libperf. Committer notes: Fix up reject due to earlier inversion in calling perf_evlist__init(). 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/20190721112506.12306-57-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
03617c22 |
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21-Jul-2019 |
Jiri Olsa <jolsa@kernel.org> |
libperf: Add threads to struct perf_evlist Move threads from tools/perf's evlist to libperf's perf_evlist struct. 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/20190721112506.12306-56-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
f72f901d |
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21-Jul-2019 |
Jiri Olsa <jolsa@kernel.org> |
libperf: Add cpus to struct perf_evlist Move cpus from tools/perf's evlist to libperf's perf_evlist struct. Committer notes: Fixed up this one: tools/perf/arch/arm/util/cs-etm.c 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/20190721112506.12306-55-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
ec903f26 |
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21-Jul-2019 |
Jiri Olsa <jolsa@kernel.org> |
libperf: Add has_user_cpus to struct perf_evlist Move has_user_cpus from tools/perf's evlist to libbperf's perf_evlist struct. 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/20190721112506.12306-54-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
6484d2f9 |
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21-Jul-2019 |
Jiri Olsa <jolsa@kernel.org> |
libperf: Add nr_entries to struct perf_evlist Move nr_entries count from 'struct perf' to into perf_evlist struct. Committer notes: Fix tools/perf/arch/s390/util/auxtrace.c case. And also the comment in tools/perf/util/annotate.h. 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/20190721112506.12306-42-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
ce9036a6 |
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21-Jul-2019 |
Jiri Olsa <jolsa@kernel.org> |
libperf: Include perf_evlist in evlist object Include perf_evlist in the evlist object, will continue to move other generic things into libperf's perf_evlist. 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/20190721112506.12306-37-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
b27c4ece |
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21-Jul-2019 |
Jiri Olsa <jolsa@kernel.org> |
libperf: Include perf_evsel in evsel object Including perf_evsel in evsel object, will continue to move other generic things into libperf's perf_evsel struct. 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/20190721112506.12306-36-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
e74676de |
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21-Jul-2019 |
Jiri Olsa <jolsa@kernel.org> |
perf evlist: Rename perf_evlist__disable() to evlist__disable() Rename perf_evlist__disable() to evlist__disable(), so we don't have a name clash when we add perf_evlist__disable() in 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/20190721112506.12306-23-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
1c87f165 |
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21-Jul-2019 |
Jiri Olsa <jolsa@kernel.org> |
perf evlist: Rename perf_evlist__enable() to evlist__enable() Rename perf_evlist__enable() to evlist__enable(), so we don't have a name clash when we add perf_evlist__enable() in 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/20190721112506.12306-22-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
750b4ede |
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21-Jul-2019 |
Jiri Olsa <jolsa@kernel.org> |
perf evlist: Rename perf_evlist__close() to evlist__close() Rename perf_evlist__close() to evlist__close(), so we don't have a name clash when we add perf_evlist__close() in 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/20190721112506.12306-21-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
474ddc4c |
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21-Jul-2019 |
Jiri Olsa <jolsa@kernel.org> |
perf evlist: Rename perf_evlist__open() to evlist__open() Rename perf_evlist__open() to evlist__open(), so we don't have a name clash when we add perf_evlist__open() in 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/20190721112506.12306-20-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
16251027 |
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21-Jul-2019 |
Jiri Olsa <jolsa@kernel.org> |
perf evlist: Rename perf_evlist__remove() to evlist__remove() Rename perf_evlist__remove() to evlist__remove(), so we don't have a name clash when we add perf_evlist__remove() in 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/20190721112506.12306-14-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
a1cf3a75 |
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21-Jul-2019 |
Jiri Olsa <jolsa@kernel.org> |
perf evlist: Rename perf_evlist__add() to evlist__add() Rename perf_evlist__add() to evlist__add(), so we don't have a name clash when we add perf_evlist__add() in 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/20190721112506.12306-13-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
c12995a5 |
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21-Jul-2019 |
Jiri Olsa <jolsa@kernel.org> |
perf evlist: Rename perf_evlist__delete() to evlist__delete() Rename perf_evlist__delete() to evlist__delete(), so we don't have a name clash when we add perf_evlist__delete() in 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/20190721112506.12306-10-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
0f98b11c |
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21-Jul-2019 |
Jiri Olsa <jolsa@kernel.org> |
perf evlist: Rename perf_evlist__new() to evlist__new() Rename perf_evlist__new() to evlist__new(), so we don't have a name clash when we add perf_evlist__new() in 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/20190721112506.12306-9-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
52c86bca |
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21-Jul-2019 |
Jiri Olsa <jolsa@kernel.org> |
perf evlist: Rename perf_evlist__init() to evlist__init() Rename perf_evlist__init() to evlist__init(), so we don't have a name clash when we add perf_evlist__init() in 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/20190721112506.12306-8-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
63503dba |
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21-Jul-2019 |
Jiri Olsa <jolsa@kernel.org> |
perf evlist: Rename struct perf_evlist to struct evlist Rename struct perf_evlist to struct evlist, so we don't have a name clash when we add struct perf_evlist in libperf. Committer notes: Added fixes to build on arm64, from Jiri and from me (tools/perf/util/cs-etm.c) 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/20190721112506.12306-6-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
32dcd021 |
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21-Jul-2019 |
Jiri Olsa <jolsa@kernel.org> |
perf evsel: Rename struct perf_evsel to struct evsel Rename struct perf_evsel to struct evsel, so we don't have a name clash when we add struct perf_evsel in 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/20190721112506.12306-5-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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#
51255a8a |
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18-Mar-2019 |
Alexey Budankov <alexey.budankov@linux.intel.com> |
perf mmap: Implement dedicated memory buffer for data compression Implemented mmap data buffer that is used as the memory to operate on when compressing data in case of serial trace streaming. 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/49b31321-0f70-392b-9a4f-649d3affe090@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
470530bb |
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18-Mar-2019 |
Alexey Budankov <alexey.budankov@linux.intel.com> |
perf record: Implement --mmap-flush=<number> option Implement a --mmap-flush option that specifies minimal number of bytes that is extracted from mmaped kernel buffer to store into a trace. The default option value is 1 byte what means every time trace writing thread finds some new data in the mmaped buffer the data is extracted, possibly compressed and written to a trace. $ tools/perf/perf record --mmap-flush 1024 -e cycles -- matrix.gcc $ tools/perf/perf record --aio --mmap-flush 1K -e cycles -- matrix.gcc The option is independent from -z setting, doesn't vary with compression level and can serve two purposes. The first purpose is to increase the compression ratio of a trace data. Larger data chunks are compressed more effectively so the implemented option allows specifying data chunk size to compress. Also at some cases executing more write syscalls with smaller data size can take longer than executing less write syscalls with bigger data size due to syscall overhead so extracting bigger data chunks specified by the option value could additionally decrease runtime overhead. The second purpose is to avoid self monitoring live-lock issue in system wide (-a) profiling mode. Profiling in system wide mode with compression (-a -z) can additionally induce data into the kernel buffers along with the data from monitored processes. If performance data rate and volume from the monitored processes is high then trace streaming and compression activity in the tool is also high. High tool process activity can lead to subtle live-lock effect when compression of single new byte from some of mmaped kernel buffer leads to generation of the next single byte at some mmaped buffer. So perf tool process ends up in endless self monitoring. Implemented synch parameter is the mean to force data move independently from the specified flush threshold value. Despite the provided flush value the tool needs capability to unconditionally drain memory buffers, at least in the end of the collection. Committer testing: Running with the default value, i.e. as soon as there is something to read go on consuming, we first write the synthesized events, small chunks of about 128 bytes: # perf trace -m 2048 --call-graph dwarf -e write -- perf record <SNIP> 101.142 ( 0.004 ms): perf/25821 write(fd: 3</root/perf.data>, buf: 0x210db60, count: 120) = 120 __libc_write (/usr/lib64/libpthread-2.28.so) ion (/home/acme/bin/perf) record__write (inlined) process_synthesized_event (/home/acme/bin/perf) perf_tool__process_synth_event (inlined) perf_event__synthesize_mmap_events (/home/acme/bin/perf) Then we move to reading the mmap buffers consuming the events put there by the kernel perf infrastructure: 107.561 ( 0.005 ms): perf/25821 write(fd: 3</root/perf.data>, buf: 0x7f1befc02000, count: 336) = 336 __libc_write (/usr/lib64/libpthread-2.28.so) ion (/home/acme/bin/perf) record__write (inlined) record__pushfn (/home/acme/bin/perf) perf_mmap__push (/home/acme/bin/perf) record__mmap_read_evlist (inlined) record__mmap_read_all (inlined) __cmd_record (inlined) cmd_record (/home/acme/bin/perf) 12919.953 ( 0.136 ms): perf/25821 write(fd: 3</root/perf.data>, buf: 0x7f1befc83150, count: 184984) = 184984 <SNIP same backtrace as in the 107.561 timestamp> 12920.094 ( 0.155 ms): perf/25821 write(fd: 3</root/perf.data>, buf: 0x7f1befc02150, count: 261816) = 261816 <SNIP same backtrace as in the 107.561 timestamp> 12920.253 ( 0.093 ms): perf/25821 write(fd: 3</root/perf.data>, buf: 0x7f1befb81120, count: 170832) = 170832 <SNIP same backtrace as in the 107.561 timestamp> If we limit it to write only when more than 16MB are available for reading, it throttles that to a quarter of the --mmap-pages set for 'perf record', which by default get to 528384 bytes, found out using 'record -v': mmap flush: 132096 mmap size 528384B With that in place all the writes coming from record__mmap_read_evlist(), i.e. from the mmap buffers setup by the kernel perf infrastructure were at least 132096 bytes long. Trying with a bigger mmap size: perf trace -e write perf record -v -m 2048 --mmap-flush 16M 74982.928 ( 2.471 ms): perf/26500 write(fd: 3</root/perf.data>, buf: 0x7ff94a6cc000, count: 3580888) = 3580888 74985.406 ( 2.353 ms): perf/26500 write(fd: 3</root/perf.data>, buf: 0x7ff949ecb000, count: 3453256) = 3453256 74987.764 ( 2.629 ms): perf/26500 write(fd: 3</root/perf.data>, buf: 0x7ff9496ca000, count: 3859232) = 3859232 74990.399 ( 2.341 ms): perf/26500 write(fd: 3</root/perf.data>, buf: 0x7ff948ec9000, count: 3769032) = 3769032 74992.744 ( 2.064 ms): perf/26500 write(fd: 3</root/perf.data>, buf: 0x7ff9486c8000, count: 3310520) = 3310520 74994.814 ( 2.619 ms): perf/26500 write(fd: 3</root/perf.data>, buf: 0x7ff947ec7000, count: 4194688) = 4194688 74997.439 ( 2.787 ms): perf/26500 write(fd: 3</root/perf.data>, buf: 0x7ff9476c6000, count: 4029760) = 4029760 Was again limited to a quarter of the mmap size: mmap flush: 2098176 mmap size 8392704B A warning about that would be good to have but can be added later, something like: "max flush is a quarter of the mmap size, if wanting to bump the mmap flush further, bump the mmap size as well using -m/--mmap-pages" Also rename the 'sync' parameters to 'synch' to keep tools/perf building with older glibcs: cc1: warnings being treated as errors builtin-record.c: In function 'record__mmap_read_evlist': builtin-record.c:775: warning: declaration of 'sync' shadows a global declaration /usr/include/unistd.h:933: warning: shadowed declaration is here builtin-record.c: In function 'record__mmap_read_all': builtin-record.c:856: warning: declaration of 'sync' shadows a global declaration /usr/include/unistd.h:933: warning: shadowed declaration is here Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com> Reviewed-by: Jiri Olsa <jolsa@kernel.org> 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: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/f6600d72-ecfa-2eb7-7e51-f6954547d500@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
4e8a5c15 |
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14-Mar-2019 |
Jiri Olsa <jolsa@kernel.org> |
perf evsel: Fix max perf_event_attr.precise_ip detection After a discussion with Andi, move the perf_event_attr.precise_ip detection for maximum precise config (via :P modifier or for default cycles event) to perf_evsel__open(). The current detection in perf_event_attr__set_max_precise_ip() is tricky, because precise_ip config is specific for given event and it currently checks only hw cycles. We now check for valid precise_ip value right after failing sys_perf_event_open() for specific event, before any of the perf_event_attr fallback code gets executed. This way we get the proper config in perf_event_attr together with allowed precise_ip settings. We can see that code activity with -vv, like: $ perf record -vv ls ... ------------------------------------------------------------ perf_event_attr: size 112 { sample_period, sample_freq } 4000 ... precise_ip 3 sample_id_all 1 exclude_guest 1 mmap2 1 comm_exec 1 ksymbol 1 ------------------------------------------------------------ sys_perf_event_open: pid 9926 cpu 0 group_fd -1 flags 0x8 sys_perf_event_open failed, error -95 decreasing precise_ip by one (2) ------------------------------------------------------------ perf_event_attr: size 112 { sample_period, sample_freq } 4000 ... precise_ip 2 sample_id_all 1 exclude_guest 1 mmap2 1 comm_exec 1 ksymbol 1 ------------------------------------------------------------ sys_perf_event_open: pid 9926 cpu 0 group_fd -1 flags 0x8 = 4 ... Suggested-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Jiri Olsa <jolsa@kernel.org> Link: http://lkml.kernel.org/n/tip-dkvxxbeg7lu74155d4jhlmc9@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
657ee553 |
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11-Mar-2019 |
Song Liu <songliubraving@fb.com> |
perf evlist: Introduce side band thread This patch introduces side band thread that captures extended information for events like PERF_RECORD_BPF_EVENT. This new thread uses its own evlist that uses ring buffer with very low watermark for lower latency. To use side band thread, we need to: 1. add side band event(s) by calling perf_evlist__add_sb_event(); 2. calls perf_evlist__start_sb_thread(); 3. at the end of perf run, perf_evlist__stop_sb_thread(). In the next patch, we use this thread to handle PERF_RECORD_BPF_EVENT. Committer notes: Add fix by Jiri Olsa for when te sb_tread can't get started and then at the end the stop_sb_thread() segfaults when joining the (non-existing) thread. That can happen when running 'perf top' or 'perf record' as a normal user, for instance. Further checks need to be done on top of this to more graciously handle these possible failure scenarios. Signed-off-by: Song Liu <songliubraving@fb.com> Reviewed-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stanislav Fomichev <sdf@google.com> Link: http://lkml.kernel.org/r/20190312053051.2690567-15-songliubraving@fb.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
9d2ed645 |
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22-Jan-2019 |
Alexey Budankov <alexey.budankov@linux.intel.com> |
perf record: Allocate affinity masks Allocate affinity option and masks for mmap data buffers and record thread as well as initialize allocated objects. Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com> Reviewed-by: Jiri Olsa <jolsa@redhat.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> Link: http://lkml.kernel.org/r/526fa2b0-07de-6dbd-a7e9-26ba875593c9@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
93115d32 |
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17-Jan-2019 |
Thomas Richter <tmricht@linux.ibm.com> |
perf report: Display arch specific diagnostic counter sets, starting with s390 On s390 the event bc000 (also named CF_DIAG) extracts the CPU Measurement Facility diagnostic counter sets and displays them as counter number and counter value pairs sorted by counter set number. Output: [root@s35lp76 perf]# ./perf report -D --stdio [00000000] Counterset:0 Counters:6 Counter:000 Value:0x000000000085ec36 Counter:001 Value:0x0000000000796c94 Counter:002 Value:0x0000000000005ada Counter:003 Value:0x0000000000092460 Counter:004 Value:0x0000000000006073 Counter:005 Value:0x00000000001a9a73 [0x000038] Counterset:1 Counters:2 Counter:000 Value:0x000000000007c59f Counter:001 Value:0x000000000002fad6 [0x000050] Counterset:2 Counters:16 Counter:000 Value:000000000000000000 Counter:001 Value:000000000000000000 Counter:002 Value:000000000000000000 Counter:003 Value:000000000000000000 Counter:004 Value:000000000000000000 Counter:005 Value:000000000000000000 Counter:006 Value:000000000000000000 Counter:007 Value:000000000000000000 Counter:008 Value:000000000000000000 Counter:009 Value:000000000000000000 Counter:010 Value:000000000000000000 Counter:011 Value:000000000000000000 Counter:012 Value:000000000000000000 Counter:013 Value:000000000000000000 Counter:014 Value:000000000000000000 Counter:015 Value:000000000000000000 [0x0000d8] Counterset:3 Counters:128 Counter:000 Value:0x000000000000020f Counter:001 Value:0x00000000000001d8 Counter:002 Value:0x000000000000d7fa Counter:003 Value:0x000000000000008b ... The number in brackets is the offset into the raw data field of the sample. New functions trace_event_sample_raw__init() and s390_sample_raw() are introduced in the code path to enable interpretation on non s390 platforms. This event bc000 attached raw data is generated only on s390 platform. Correct display on other platforms requires correct endianness handling. Committer notes: Added a init function that sets up a evlist function pointer to avoid repeated tests on evlist->env and calls to perf_env__name() that involves normalizing, etc, for each PERF_RECORD_SAMPLE. Removed needless __maybe_unused from the trace_event_raw() prototype in session.h, move it to be an static function in evlist. The 'offset' variable is a size_t, not an u64, fix it to avoid this on some arches: CC /tmp/build/perf/util/s390-sample-raw.o util/s390-sample-raw.c: In function 's390_cpumcfdg_testctr': util/s390-sample-raw.c:77:4: error: format '%llx' expects argument of type 'long long unsigned int', but argument 4 has type 'size_t' [-Werror=format=] pr_err("Invalid counter set entry at %#" PRIx64 "\n", ^ cc1: all warnings being treated as errors Signed-off-by: Thomas Richter <tmricht@linux.ibm.com> Reviewed-by: Hendrik Brueckner <brueckner@linux.ibm.com> Link: https://lkml.kernel.org/r/9c856ac0-ef23-72b5-901d-a1f815508976@linux.ibm.com Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Link: https://lkml.kernel.org/n/tip-s3jhif06et9ug78qhclw41z1@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
d3d1af6f |
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05-Nov-2018 |
Alexey Budankov <alexey.budankov@linux.intel.com> |
perf record: Enable asynchronous trace writing The trace file offset is read once before mmaps iterating loop and written back after all performance data is enqueued for aio writing. The trace file offset is incremented linearly after every successful aio write operation. record__aio_sync() blocks till completion of the started AIO operation and then proceeds. record__aio_mmap_read_sync() implements a barrier for all incomplete aio write requests. Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com> Reviewed-by: Jiri Olsa <jolsa@redhat.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/ce2d45e9-d236-871c-7c8f-1bed2d37e8ac@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
7ad92a33 |
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06-Nov-2018 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Rename perf_evlist__set_filter* to perf_evlist__set_tp_filter* To better reflect that this is a tracepoint filter, as opposed, for instance to map based BPF filters. 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-9138svli6ddcphrr3ymy9oy3@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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c3537fc2 |
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01-Oct-2018 |
Andi Kleen <ak@linux.intel.com> |
perf evlist: Move perf_evsel__reset_weak_group into evlist - Move the function from builtin-stat to evlist for reuse - Rename to evlist to match purpose better - Pass the evlist as first argument. - No functional changes Signed-off-by: Andi Kleen <ak@linux.intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Link: http://lkml.kernel.org/r/20181001195927.14211-1-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
e2bdbe80 |
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21-May-2018 |
Jin Yao <yao.jin@linux.intel.com> |
perf evlist: Introduce force_leader() method For non-explicit group (e.g. those created with -e '{eventA,eventB}'), 'perf report' supports a option '--group' which can enable group output. We also need to support 'perf annotate' with the same '--group'. Create a new function perf_evlist__force_leader() which contains common code to force setting the group leader. 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: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1526914666-31839-2-git-send-email-yao.jin@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
6afad54d |
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01-Mar-2018 |
Kan Liang <kan.liang@linux.intel.com> |
perf mmap: Discard legacy interfaces for mmap read forward Discards legacy interfaces perf_evlist__mmap_read_forward(), perf_evlist__mmap_read() and perf_evlist__mmap_consume(). No tools use them. Signed-off-by: Kan Liang <kan.liang@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/1519945751-37786-14-git-send-email-kan.liang@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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6888ff66 |
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18-Jan-2018 |
Kan Liang <kan.liang@intel.com> |
perf evlist: Remove stale mmap read for backward perf_evlist__mmap_read_catchup() and perf_evlist__mmap_read_backward() are only for overwrite mode. But they read the evlist->mmap buffer which is for non-overwrite mode. It did not bring any serious problem yet, because there is no one use it. Remove the unused interfaces. Signed-off-by: Kan Liang <kan.liang@intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Acked-by: Wang Nan <wangnan0@huawei.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1516310792-208685-2-git-send-email-kan.liang@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
bafae98e |
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22-Jan-2018 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Remove fcntl.h from evlist.h Not needed there, fixup the places where it is needed and was getting only by luck via evlist.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: https://lkml.kernel.org/n/tip-yxjpetn64z8vjuguu84gr6x6@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
6011518d |
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08-Dec-2017 |
Jin Yao <yao.jin@linux.intel.com> |
perf header: Add infrastructure to record first and last sample time perf report/script/... have a --time option to limit the time range of output. That's very useful to slice large traces, e.g. when processing the output of perf script for some analysis. But right now --time only supports absolute time. Also there is no fast way to get the start/end times of a given trace except for looking at it. This makes it hard to e.g. only decode the first half of the trace, which is useful for parallelization of scripts Another problem is that perf records are variable size and there is no synchronization mechanism. So the only way to find the last sample reliably would be to walk all samples. But we want to avoid that in perf report/... because it is already quite expensive. That is why storing the first sample time and last sample time in perf record is better. This patch creates a new header feature type HEADER_SAMPLE_TIME and related ops. Save the first sample time and the last sample time to the feature section in perf file header. That will be done when, for instance, processing build-ids, where we already have to process all samples to create the build-id table, take advantage of that to further amortize that processing by storing HEADER_SAMPLE_TIME to make 'perf report/script' faster when using --time. Committer testing: After this patch is applied the header is written with zeroes, we need the next patch, for "perf record" to actually write the timestamps: # perf report -D | grep PERF_RECORD_SAMPLE\( 22501155244406 0x44f0 [0x28]: PERF_RECORD_SAMPLE(IP, 0x4001): 25016/25016: 0xffffffffa21be8c5 period: 1 addr: 0 <SNIP> 22501155793625 0x4a30 [0x28]: PERF_RECORD_SAMPLE(IP, 0x4001): 25016/25016: 0xffffffffa21ffd50 period: 2828043 addr: 0 # perf report --header | grep "time of " # time of first sample : 0.000000 # time of last sample : 0.000000 # Changelog: v7: 1. Rebase to latest perf/core branch. 2. Add following clarification in patch description according to Arnaldo's suggestion. "That will be done when, for instance, processing build-ids, where we already have to process all samples to create the build-id table, take advantage of that to further amortize that processing by storing HEADER_SAMPLE_TIME to make 'perf report/script' faster when using --time." v4: Use perf script time style for timestamp printing. Also add with the printing of sample duration. v3: Remove the definitions of first_sample_time/last_sample_time from perf_session. Just define them in perf_evlist Signed-off-by: Jin Yao <yao.jin@linux.intel.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: Andi Kleen <ak@linux.intel.com> Cc: Kan Liang <kan.liang@intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1512738826-2628-2-git-send-email-yao.jin@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
0b72d69a |
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04-Dec-2017 |
Wang Nan <wangnan0@huawei.com> |
perf tools: Rename 'backward' to 'overwrite' in evlist, mmap and record Remove the backward/forward concept to make it uniform with user interface (the '--overwrite' option). Signed-off-by: Wang Nan <wangnan0@huawei.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Kan Liang <kan.liang@intel.com> Cc: Mengting Zhang <zhangmengting@huawei.com> Link: http://lkml.kernel.org/r/20171204165107.95327-4-wangnan0@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
144b9a4f |
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02-Dec-2017 |
Wang Nan <wangnan0@huawei.com> |
perf evlist: Remove evlist->overwrite evlist->overwrite is set to false in all users. It can be removed. Signed-off-by: Wang Nan <wangnan0@huawei.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Kan Liang <kan.liang@intel.com> Link: http://lkml.kernel.org/r/20171203020044.81680-4-wangnan0@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
7a276ff6 |
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02-Dec-2017 |
Wang Nan <wangnan0@huawei.com> |
perf evlist: Remove 'overwrite' parameter from perf_evlist__mmap_ex All users of perf_evlist__mmap_ex set !overwrite. Remove it from its arguments list. Signed-off-by: Wang Nan <wangnan0@huawei.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Kan Liang <kan.liang@intel.com> Link: http://lkml.kernel.org/r/20171203020044.81680-3-wangnan0@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
f74b9d3a |
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02-Dec-2017 |
Wang Nan <wangnan0@huawei.com> |
perf evlist: Remove 'overwrite' parameter from perf_evlist__mmap Now all perf_evlist__mmap's users doesn't set 'overwrite'. Remove it from arguments list. Signed-off-by: Wang Nan <wangnan0@huawei.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Kan Liang <kan.liang@intel.com> Link: http://lkml.kernel.org/r/20171203020044.81680-2-wangnan0@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
5b0d1cb4 |
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14-Nov-2017 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Add helper to check if attr.exclude_kernel is set in all evsels The warning about kptr_restrict needs to be emitted only when it is set and we ask for kernel space samples, so add a helper to help with that. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-fh7drty6yljei9gxxzer6eup@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
01468120 |
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03-Aug-2017 |
Jiri Olsa <jolsa@kernel.org> |
perf evlist: Add perf_evlist__parse_sample_timestamp function Add perf_evlist__parse_sample_timestamp to retrieve the timestamp of the sample. The idea is to use this function instead of the full sample parsing before we queue the sample. At that time only the timestamp is needed and we parse the sample once again later on delivery. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-o7syqo8lipj4or7renpu8e8y@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
07d6f446 |
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14-Nov-2017 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Add helper to check if attr.exclude_kernel is set in all evsels The warning about kptr_restrict needs to be emitted only when it is set and we ask for kernel space samples, so add a helper to help with that. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-fh7drty6yljei9gxxzer6eup@git.kernel.org 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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#
16958497 |
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06-Oct-2017 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf mmap: Move perf_mmap and methods to separate mmap.[ch] files To better organize the sources, and we may end up even using it directly, without evlists and evsels. 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-oiqrm7grflurnnzo2ovfnslg@git.kernel.org 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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#
64831a21 |
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20-Jul-2017 |
David Carrillo-Cisneros <davidcc@google.com> |
perf sort: Use default sort if evlist is empty Fixes bug noted by Jiri in https://lkml.org/lkml/2017/6/13/755 and caused by commit d49dadea7862 ("perf tools: Make 'trace' or 'trace_fields' sort key default for tracepoint events") not taking into account that evlist is empty in pipe-mode. Before this commit, pipe mode will only show bogus "100.00% N/A" instead of correct output as follows: $ perf record -o - sleep 1 | perf report -i - # To display the perf.data header info, please use --header/--header-only options. # [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.000 MB - ] # # Total Lost Samples: 0 # # Samples: 8 of event 'cycles:ppH' # Event count (approx.): 145658 # # Overhead Trace output # ........ ............ # 100.00% N/A Correct output, after patch: $ perf record -o - sleep 1 | perf report -i - # To display the perf.data header info, please use --header/--header-only options. # [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.000 MB - ] # # Total Lost Samples: 0 # # Samples: 8 of event 'cycles:ppH' # Event count (approx.): 191331 # # Overhead Command Shared Object Symbol # ........ ....... ................. ................................. # 81.63% sleep libc-2.19.so [.] _exit 13.58% sleep ld-2.19.so [.] do_lookup_x 2.34% sleep [kernel.kallsyms] [k] context_switch 2.34% sleep libc-2.19.so [.] __GI___libc_nanosleep 0.11% perf [kernel.kallsyms] [k] __intel_pmu_enable_a Reported-by: Jiri Olsa <jolsa@kernel.org> Report-Link: https://lkml.kernel.org/r/20170613185422.GA6092@krava Signed-off-by: David Carrillo-Cisneros <davidcc@google.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: Namhyung Kim <namhyung@kernel.org> Cc: Paul Turner <pjt@google.com> Cc: Simon Que <sque@chromium.org> Cc: Stephane Eranian <eranian@google.com> Cc: Wang Nan <wangnan0@huawei.com> Fixes: d49dadea7862 ("perf tools: Make 'trace' or 'trace_fields' sort key default for tracepoint events") Link: https://lkml.kernel.org/r/20170721051157.47331-1-davidcc@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
db918acb |
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03-Jul-2017 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Allow asking for max precise_ip in add_default() There are cases where we want to leave attr.precise_ip as zero, such as when using 'perf record --no-samples', where this would make the kernel return -EINVAL. 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-0u2m2a8rqw781r6m8svqyne8@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
5c97cac6 |
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16-Jun-2017 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
tools: Adopt __aligned from kernel sources To have a more compact way to ask the compiler to use a specific alignment, making tools/ look more like kernel source code. 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-8jiem6ubg9rlpbs7c2p900no@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
9607ad3a |
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19-Apr-2017 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Add signal.h to places using its definitions And remove it from util.h, disentangling it a bit more. Link: http://lkml.kernel.org/n/tip-2zg9s5nx90yde64j3g4z2uhk@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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#
25a3720c |
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21-Feb-2017 |
Elena Reshetova <elena.reshetova@intel.com> |
perf evlist: Convert perf_map.refcnt from atomic_t to refcount_t The refcount_t type and corresponding API should be used instead of atomic_t when the variable is used as a reference counter. This allows to avoid accidental refcounter overflows that might lead to use-after-free situations. Signed-off-by: Elena Reshetova <elena.reshetova@intel.com> Signed-off-by: David Windsor <dwindsor@gmail.com> Signed-off-by: Hans Liljestrand <ishkamiel@gmail.com> Signed-off-by: Kees Kook <keescook@chromium.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: David Windsor <dwindsor@gmail.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Hans Liljestrand <ishkamiel@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kees Kook <keescook@chromium.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Matija Glavinic Pecotic <matija.glavinic-pecotic.ext@nokia.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: alsa-devel@alsa-project.org Link: http://lkml.kernel.org/r/1487691303-31858-8-git-send-email-elena.reshetova@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
0c582449 |
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09-Jan-2017 |
Jiri Olsa <jolsa@kernel.org> |
perf record: Add switch-output size warning Adding switch-output size warning if the requested size of lower than the wakeup ring buffer size. $ perf record --switch-output=1K ls WARNING: switch-output data size lower than wakeup kernel buffer size (258K) expect bigger perf.data sizes ... Signed-off-by: Jiri Olsa <jolsa@kernel.org> Suggested-and-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> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/1483955520-29063-6-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
f6cdff83 |
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14-Jul-2016 |
Wang Nan <wangnan0@huawei.com> |
perf evlist: Make {pause,resume} internal helpers There's no user of these two function outside evlist.c. Remove them from public namespace. Signed-off-by: Wang Nan <wangnan0@huawei.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: He Kuang <hekuang@huawei.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Nilay Vaish <nilayvaish@gmail.com> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1468485287-33422-13-git-send-email-wangnan0@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
54cc54de |
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14-Jul-2016 |
Wang Nan <wangnan0@huawei.com> |
perf evlist: Setup backward mmap state machine Introduce a bkw_mmap_state state machine to evlist: .________________(forbid)_____________. | V NOTREADY --(0)--> RUNNING --(1)--> DATA_PENDING --(2)--> EMPTY ^ ^ | ^ | | |__(forbid)____/ |___(forbid)___/| | | \_________________(3)_______________/ NOTREADY : Backward ring buffers are not ready RUNNING : Backward ring buffers are recording DATA_PENDING : We are required to collect data from backward ring buffers EMPTY : We have collected data from backward ring buffers. (0): Setup backward ring buffer (1): Pause ring buffers for reading (2): Read from ring buffers (3): Resume ring buffers for recording We can't avoid this complexity. Since we deliberately drop records from overwritable ring buffer, there's no way for us to check remaining from ring buffer itself (by checking head and old pointers). Therefore, we need DATA_PENDING and EMPTY state to help us recording what we have done to the ring buffer. In record__mmap_read_evlist(), drive this state machine from DATA_PENDING to EMPTY. In perf_evlist__mmap_per_evsel(), drive this state machine from NOTREADY to RUNNING when creating backward mmap. Signed-off-by: Wang Nan <wangnan0@huawei.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: He Kuang <hekuang@huawei.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Nilay Vaish <nilayvaish@gmail.com> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1468485287-33422-11-git-send-email-wangnan0@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
a0c6f451 |
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14-Jul-2016 |
Wang Nan <wangnan0@huawei.com> |
perf evlist: Drop evlist->backward Now there's no real user of evlist->backward. Drop it. We are going to use evlist->backward_mmap as a container for backward ring buffer. Signed-off-by: Wang Nan <wangnan0@huawei.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: He Kuang <hekuang@huawei.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Nilay Vaish <nilayvaish@gmail.com> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1468485287-33422-10-git-send-email-wangnan0@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
b2cb615d |
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14-Jul-2016 |
Wang Nan <wangnan0@huawei.com> |
perf evlist: Introduce backward_mmap array for evlist Add backward_mmap to evlist, free it together with normal mmap. Improve perf_evlist__pick_pc(), search backward_mmap if evlist->mmap is not available. This patch doesn't alloc this array. It will be allocated conditionally in the following commits. Signed-off-by: Wang Nan <wangnan0@huawei.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: He Kuang <hekuang@huawei.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Nilay Vaish <nilayvaish@gmail.com> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1468485287-33422-8-git-send-email-wangnan0@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
8db6d6b1 |
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14-Jul-2016 |
Wang Nan <wangnan0@huawei.com> |
perf evlist: Update mmap related APIs and helpers Currently, the evlist mmap related helpers and APIs accept evlist and idx, and dereference 'struct perf_mmap' by evlist->mmap[idx]. This is unnecessary, and force each evlist contains only one mmap array. Following commits are going to introduce multiple mmap arrays to a evlist. This patch refators these APIs and helpers, introduces functions accept perf_mmap pointer directly. New helpers and APIs are decoupled with perf_evlist, and become perf_mmap functions (so they have perf_mmap prefix). Old functions are reimplemented with new functions. Some of them will be removed in following commits. Signed-off-by: Wang Nan <wangnan0@huawei.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: He Kuang <hekuang@huawei.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Nilay Vaish <nilayvaish@gmail.com> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1468485287-33422-4-git-send-email-wangnan0@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
7cb5c5ac |
|
10-Jul-2016 |
Jiri Olsa <jolsa@kernel.org> |
perf evlist: Make event2evsel public It will be used outside of evlist.c object in folowing patches. Signed-off-by: Jiri Olsa <jolsa@kernel.org> 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/1468148882-10362-2-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
e5cadb93 |
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23-Jun-2016 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Rename for_each() macros to for_each_entry() To match the semantics for list.h in the kernel, that are used to implement those macros. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Milian Wolff <milian.wolff@kdab.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Taeung Song <treeze.taeung@gmail.com> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-qbcjlgj0ffxquxscahbpddi3@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
5a5ddeb6 |
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25-May-2016 |
Wang Nan <wangnan0@huawei.com> |
perf evlist: Choose correct reading direction according to evlist->backward Now we have evlist->backward to indicate the mmap direction. Make perf_evlist__mmap_read() choose right direction automatically. Signed-off-by: Wang Nan <wangnan0@huawei.com> Cc: He Kuang <hekuang@huawei.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1464183898-174512-3-git-send-email-wangnan0@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
3a62a7b8 |
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23-May-2016 |
Wang Nan <wangnan0@huawei.com> |
perf record: Read from backward ring buffer Introduce rb_find_range() to find start and end position from a backward ring buffer. Signed-off-by: Wang Nan <wangnan0@huawei.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1463987628-163563-5-git-send-email-wangnan0@huawei.com Signed-off-by: He Kuang <hekuang@huawei.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
65aea233 |
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23-May-2016 |
Wang Nan <wangnan0@huawei.com> |
perf evlist: Add API to pause/resume perf_evlist__toggle_{pause,resume}() are introduced to pause/resume events in an evlist. Utilize PERF_EVENT_IOC_PAUSE_OUTPUT ioctl. Following commits use them to ensure overwrite ring buffer is paused before reading. Signed-off-by: Wang Nan <wangnan0@huawei.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1463987628-163563-2-git-send-email-wangnan0@huawei.com Signed-off-by: He Kuang <hekuang@huawei.com> [ Return -1, like all other ioctl() usage in evlist.c, rename 'pause' arg to avoid breaking the build on ubuntu 12.04 and other old systems ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
d4c6fb36 |
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20-May-2016 |
Wang Nan <wangnan0@huawei.com> |
perf evsel: Record fd into perf_mmap Add a fd field into struct perf_mmap so that perf can track the mmap fd. This feature will be used for toggling overwrite ring buffers. Signed-off-by: Wang Nan <wangnan0@huawei.com> Cc: He Kuang <hekuang@huawei.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1463762315-155689-3-git-send-email-wangnan0@huawei.com Signed-off-by: He Kuang <hekuang@huawei.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
e24c7520 |
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08-May-2016 |
Wang Nan <wangnan0@huawei.com> |
perf tools: Support reading from backward ring buffer perf_evlist__mmap_read_backward() is introduced for reading backward ring buffer. Since direction for reading such ring buffer is different from the direction kernel writing to it, and since user need to fetch most recent record from it, a perf_evlist__mmap_read_catchup() is introduced to move the reading pointer to the end of the buffer. Signed-off-by: Wang Nan <wangnan0@huawei.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1462758471-89706-2-git-send-email-wangnan0@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
f5e7150c |
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15-Apr-2016 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Expose perf_event_mlock_kb_in_pages() helper When the user doesn't set --mmap-pages, perf_evlist__mmap() will do it by reading the maximum possible for a non-root user from the /proc/sys/kernel/perf_event_mlock_kb file. Expose that function so that 'perf trace' can, for root users, to bump mmap-pages to a higher value for root, based on the contents of this proc file. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Milian Wolff <milian.wolff@kdab.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-xay69plylwibpb3l4isrpl1k@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
22c8a376 |
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11-Apr-2016 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Add (reset,set)_sample_bit methods For fiddling with sample_type fields in all evsels in an evlist. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Milian Wolff <milian.wolff@kdab.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-dg6yavctt0hzl2tsgfb43qsr@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
e68ae9cf |
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11-Apr-2016 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evsel: Do not use globals in config() Instead receive a callchain_param pointer to configure callchain aspects, not doing so if NULL is passed. This will allow fine grained control over which evsels in an evlist gets callchains enabled. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Milian Wolff <milian.wolff@kdab.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-2mupip6khc92mh5x4nw9to82@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
7630b3e2 |
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22-Feb-2016 |
Wang Nan <wangnan0@huawei.com> |
perf tools: Enable passing event to BPF object A new syntax is added to the parser so that the user can access predefined perf events in BPF objects. After this patch, BPF programs for perf are finally able to utilize bpf_perf_event_read() introduced in commit 35578d798400 ("bpf: Implement function bpf_perf_event_read() that get the selected hardware PMU counter"). Test result: # cat test_bpf_map_2.c /************************ BEGIN **************************/ #include <uapi/linux/bpf.h> #define SEC(NAME) __attribute__((section(NAME), used)) struct bpf_map_def { unsigned int type; unsigned int key_size; unsigned int value_size; unsigned int max_entries; }; static int (*trace_printk)(const char *fmt, int fmt_size, ...) = (void *)BPF_FUNC_trace_printk; static int (*get_smp_processor_id)(void) = (void *)BPF_FUNC_get_smp_processor_id; static int (*perf_event_read)(struct bpf_map_def *, int) = (void *)BPF_FUNC_perf_event_read; struct bpf_map_def SEC("maps") pmu_map = { .type = BPF_MAP_TYPE_PERF_EVENT_ARRAY, .key_size = sizeof(int), .value_size = sizeof(int), .max_entries = __NR_CPUS__, }; SEC("func_write=sys_write") int func_write(void *ctx) { unsigned long long val; char fmt[] = "sys_write: pmu=%llu\n"; val = perf_event_read(&pmu_map, get_smp_processor_id()); trace_printk(fmt, sizeof(fmt), val); return 0; } SEC("func_write_return=sys_write%return") int func_write_return(void *ctx) { unsigned long long val = 0; char fmt[] = "sys_write_return: pmu=%llu\n"; val = perf_event_read(&pmu_map, get_smp_processor_id()); trace_printk(fmt, sizeof(fmt), val); return 0; } char _license[] SEC("license") = "GPL"; int _version SEC("version") = LINUX_VERSION_CODE; /************************* END ***************************/ Normal case: # echo "" > /sys/kernel/debug/tracing/trace # perf record -i -e cycles -e './test_bpf_map_2.c/map:pmu_map.event=cycles/' ls / [SNIP] [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.013 MB perf.data (7 samples) ] # cat /sys/kernel/debug/tracing/trace | grep ls ls-17066 [000] d... 938449.863301: : sys_write: pmu=1157327 ls-17066 [000] dN.. 938449.863342: : sys_write_return: pmu=1225218 ls-17066 [000] d... 938449.863349: : sys_write: pmu=1241922 ls-17066 [000] dN.. 938449.863369: : sys_write_return: pmu=1267445 Normal case (system wide): # echo "" > /sys/kernel/debug/tracing/trace # perf record -i -e cycles -e './test_bpf_map_2.c/map:pmu_map.event=cycles/' -a ^C[ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.811 MB perf.data (120 samples) ] # cat /sys/kernel/debug/tracing/trace | grep -v '18446744073709551594' | grep -v perf | head -n 20 [SNIP] # TASK-PID CPU# |||| TIMESTAMP FUNCTION # | | | |||| | | gmain-30828 [002] d... 2740551.068992: : sys_write: pmu=84373 gmain-30828 [002] d... 2740551.068992: : sys_write_return: pmu=87696 gmain-30828 [002] d... 2740551.068996: : sys_write: pmu=100658 gmain-30828 [002] d... 2740551.068997: : sys_write_return: pmu=102572 Error case 1: # perf record -e './test_bpf_map_2.c' ls / [SNIP] [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.014 MB perf.data ] # cat /sys/kernel/debug/tracing/trace | grep ls ls-17115 [007] d... 2724279.665625: : sys_write: pmu=18446744073709551614 ls-17115 [007] dN.. 2724279.665651: : sys_write_return: pmu=18446744073709551614 ls-17115 [007] d... 2724279.665658: : sys_write: pmu=18446744073709551614 ls-17115 [007] dN.. 2724279.665677: : sys_write_return: pmu=18446744073709551614 (18446744073709551614 is 0xfffffffffffffffe (-2)) Error case 2: # perf record -e cycles -e './test_bpf_map_2.c/map:pmu_map.event=evt/' -a event syntax error: '..ps:pmu_map.event=evt/' \___ Event not found for map setting Hint: Valid config terms: map:[<arraymap>].value=[value] map:[<eventmap>].event=[event] [SNIP] Error case 3: # ls /proc/2348/task/ 2348 2505 2506 2507 2508 # perf record -i -e cycles -e './test_bpf_map_2.c/map:pmu_map.event=cycles/' -p 2348 ERROR: Apply config to BPF failed: Cannot set event to BPF map in multi-thread tracing Error case 4: # perf record -e cycles -e './test_bpf_map_2.c/map:pmu_map.event=cycles/' ls / ERROR: Apply config to BPF failed: Doesn't support inherit event (Hint: use -i to turn off inherit) Error case 5: # perf record -i -e raw_syscalls:sys_enter -e './test_bpf_map_2.c/map:pmu_map.event=raw_syscalls:sys_enter/' ls ERROR: Apply config to BPF failed: Can only put raw, hardware and BPF output event into a BPF map Error case 6: # perf record -i -e './test_bpf_map_2.c/map:pmu_map.event=123/' ls / event syntax error: '.._map.event=123/' \___ Incorrect value type for map [SNIP] Signed-off-by: Wang Nan <wangnan0@huawei.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Brendan Gregg <brendan.d.gregg@gmail.com> Cc: Cody P Schafer <dev@codyps.com> Cc: He Kuang <hekuang@huawei.com> Cc: Jeremie Galarneau <jeremie.galarneau@efficios.com> Cc: Kirill Smelkov <kirr@nexedi.com> Cc: Li Zefan <lizefan@huawei.com> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1456132275-98875-7-git-send-email-wangnan0@huawei.com Signed-off-by: He Kuang <hekuang@huawei.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
d2190a80 |
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07-Jan-2016 |
Jiri Olsa <jolsa@kernel.org> |
perf evlist: Remove perf_evlist__(enable|disable)_event functions Replacing them with perf_evsel__(enable|disable). Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Noel Grandin <noelgrandin@gmail.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1452158050-28061-2-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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5bae0250 |
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07-Jan-2016 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Introduce perf_evlist__new_dummy constructor For case where all we need is an evlist with just an "dummy" evsel, like in some 'perf test' entries. 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-q52le0pblm2k3ncvyilelr9z@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
1c59612d |
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05-Nov-2015 |
Jiri Olsa <jolsa@kernel.org> |
perf evlist: Export id_add_fd() Will be used to storing the event IDs in evlist object so it get stored into perf.data file. 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/1446734469-11352-6-git-send-email-jolsa@kernel.org [ Split from the patch storing the ids in the perf.data file ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
45cf6c33 |
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05-Oct-2015 |
Jiri Olsa <jolsa@kernel.org> |
perf tools: Export perf_event_attr__set_max_precise_ip() It'll be used in following patch. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Kan Liang <kan.liang@intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1444068369-20978-5-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
4768230a |
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25-Sep-2015 |
Adrian Hunter <adrian.hunter@intel.com> |
perf evlist: Add perf_evlist__remove() Add a counterpart to perf_evlist__add() that does the opposite and deletes the evsel. This will be used by perf inject to remove unwanted evsels. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1443186956-18718-23-git-send-email-adrian.hunter@intel.com [ Renamed it from perf_evlist__del() to perf_evlist__remove() and removed the perf_evsel__delete() call ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
dddcf6ab |
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25-Sep-2015 |
Adrian Hunter <adrian.hunter@intel.com> |
perf evlist: Add perf_evlist__id2evsel_strict() perf_evlist__id2evsel_strict() is the same as perf_evlist__id2evsel() except that it ensures that the id must match. This will be used by perf inject to find a specific evsel that is to be deleted, hence the need to match exactly. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1443186956-18718-22-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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f114d6ef |
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08-Sep-2015 |
Adrian Hunter <adrian.hunter@intel.com> |
perf evlist: Fix splice_list_tail() not setting evlist Commit d49e46950772 ("perf evsel: Add a backpointer to the evlist a evsel is in") updated perf_evlist__add() but not perf_evlist__splice_list_tail(). This illustrates that it is better if perf_evlist__splice_list_tail() calls perf_evlist__add() instead of duplicating the logic, so do that. This will also simplify a subsequent fix for propagating maps. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@intel.com> Link: http://lkml.kernel.org/r/1441699142-18905-6-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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ec9a77a7 |
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08-Sep-2015 |
Adrian Hunter <adrian.hunter@intel.com> |
perf evlist: Add has_user_cpus member Subsequent patches will need to call perf_evlist__propagate_maps without reference to a "target". Add evlist->has_user_cpus to record whether the user has specified which cpus to target (and therefore whether that list of cpus should override the default settings for a selected event i.e. the cpu maps should be propagated) Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@intel.com> Link: http://lkml.kernel.org/r/1441699142-18905-5-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
d5bc056e |
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08-Sep-2015 |
Adrian Hunter <adrian.hunter@intel.com> |
perf evlist: Remove redundant validation from propagate_maps() The validation checks that the values that were just assigned, got assigned i.e. the error can't ever happen. Subsequent patches will call this code in places where errors are not being returned. Changing those code paths to return this non-existent error is counter-productive, so just remove it. That in turn results in perf_evlist__set_maps not needing to return an error, but callers aren't checking it either, so remove that too. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@intel.com> Link: http://lkml.kernel.org/r/1441699142-18905-4-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
2c07144d |
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28-Aug-2015 |
Kan Liang <kan.liang@intel.com> |
perf evlist: Add backpointer for perf_env to evlist Add backpointer to perf_env in evlist, so we can easily access env when processing something where we have a evsel or evlist. Suggested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Kan Liang <kan.liang@intel.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Mark Rutland <mark.rutland@arm.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/1440755289-30939-5-git-send-email-kan.liang@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
83509565 |
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12-Aug-2015 |
Adrian Hunter <adrian.hunter@intel.com> |
perf tools: Add a helper function to probe whether cpu-wide tracing is possible Add a helper function to probe whether cpu-wide tracing is possible. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1439458857-30636-2-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
98df858e |
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18-Jul-2015 |
Andi Kleen <ak@linux.intel.com> |
perf report: Add flag for non ANY branch mode Later patches need to cheaply check that the branch mode is in ANY. Add a new function to check all event attrs and add a flag to the report state, which is then initialized. v2: Rename flag Signed-off-by: Andi Kleen <ak@linux.intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lkml.kernel.org/r/1437233094-12844-3-git-send-email-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
b757bb09 |
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20-Jul-2015 |
Adrian Hunter <adrian.hunter@intel.com> |
perf record: Add option --switch-events to select PERF_RECORD_SWITCH events Add an option to select PERF_RECORD_SWITCH events. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> 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/1437471846-26995-4-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
3de5cfb0 |
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21-Jul-2015 |
Jiri Olsa <jolsa@kernel.org> |
perf evlist: Force perf_evlist__set_maps to propagate maps through events Forcing perf_evlist__set_maps to propagate maps through events, so cpu/thread maps get set within evlist. Signed-off-by: Jiri Olsa <jolsa@kernel.org> 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/1437481927-29538-11-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
24e34f68 |
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26-Jun-2015 |
Jiri Olsa <jolsa@kernel.org> |
perf stat: Move perf_evlist__(alloc|free|reset)_stats into stat object Moving perf_evlist__(alloc|free|reset)_stats into stat object, so it could be used in following patches. 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/1435310967-14570-12-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
2b56bcfb |
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17-Jun-2015 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Add toggle_enable() method For an upcoming feature in 'perf top' we will have a hotkey to enable/disable events, so remember if the events in the list are enabled or disabled and allows toggling this state using a new method. 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-64c4jvdl5feg2zhimxvokqka@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
86066064 |
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15-May-2015 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Elliminate alignment holes perf_evsel: Before: /* size: 320, cachelines: 5, members: 35 */ /* sum members: 304, holes: 3, sum holes: 16 */ After: /* size: 304, cachelines: 5, members: 35 */ /* last cacheline: 48 bytes */ perf_evlist: Before: /* size: 2544, cachelines: 40, members: 17 */ /* sum members: 2533, holes: 2, sum holes: 11 */ /* last cacheline: 48 bytes */ After: /* size: 2536, cachelines: 40, members: 17 */ /* sum members: 2533, holes: 1, sum holes: 3 */ /* last cacheline: 40 bytes */ timechart: Before: /* size: 288, cachelines: 5, members: 21 */ /* sum members: 271, holes: 2, sum holes: 10 */ /* padding: 7 */ /* last cacheline: 32 bytes */ After: /* size: 272, cachelines: 5, members: 21 */ /* sum members: 271, holes: 1, sum holes: 1 */ /* last cacheline: 16 bytes */ thread: Before: /* size: 112, cachelines: 2, members: 15 */ /* sum members: 101, holes: 2, sum holes: 11 */ /* last cacheline: 48 bytes */ After: /* size: 104, cachelines: 2, members: 15 */ /* sum members: 101, holes: 1, sum holes: 3 */ /* last cacheline: 40 bytes */ 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-a543w7zjl9yyrg9nkf1teukp@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
7143849a |
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15-May-2015 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Use atomic.h for the perf_mmap refcount Now that we have atomic.h, we should convert all of the existing refcounts to use it. 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-qhpv2etncj3hfofgj1aitkyv@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
e9db1310 |
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09-Apr-2015 |
Adrian Hunter <adrian.hunter@intel.com> |
perf record: Extend -m option for AUX area tracing mmap pages Extend the -m option so that the number of mmap pages for AUX area tracing can be specified by adding a comma followed by the number of pages. 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/1428594864-29309-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
718c602d |
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09-Apr-2015 |
Adrian Hunter <adrian.hunter@intel.com> |
perf evlist: Add support for mmapping an AUX area buffer This patch supports the addition to the kernel of AUX area buffers that can be mmapped separately from the perf-events buffer. The AUX buffer can be configured to contain hardware-produced trace information. The first implementation will support Intel BTS and Intel PT. One auxtrace buffer is mmapped per perf-events buffer. If the requested auxtrace buffer size is zero, which it will be until further support is added, then no auxtrace mmapping is attempted. 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: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1428594864-29309-3-git-send-email-adrian.hunter@intel.com [ Fixed conflict in evlist.h ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
7b8283b5 |
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07-Apr-2015 |
David Ahern <dsahern@gmail.com> |
perf evlist: Fix type for references to data_head/tail The data_head and data_tail fields are defined as __u64 in linux/perf_event.h, but perf userspace uses int and unsigned int. Convert all references to u64 for consistency. Signed-off-by: David Ahern <dsahern@gmail.com> Acked-by: Peter Zijlstra <peterz@infradead.org> 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/r/1428420037-26599-1-git-send-email-dsahern@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
23d4aad4 |
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24-Mar-2015 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Return the first evsel with an invalid filter in apply_filters() Use of a bad filter currently generates the message: Error: failed to set filter with 22 (Invalid argument) Add the event name to make it clear to which event the filter failed to apply: Error: Failed to set filter "foo" on event sched:sg_lb_stats: 22: Invalid argument To test it use something like: # perf record -e sched:sched_switch -e sched:*fork --filter parent_pid==1 -e sched:*wait* --filter bla usleep 1 Error: failed to set filter "bla" on event sched:sched_stat_iowait with 22 (Invalid argument) # Based-on-a-patch-by: David Ahern <dsahern@gmail.com> 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-d7gq2fjvaecozp9o2i0siifu@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
a73b6c19 |
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18-Feb-2015 |
David Ahern <david.ahern@oracle.com> |
perf top: Fix SIGBUS on sparc64 perf-top is terminating due to SIGBUS on sparc64. git bisect points to: commit 82396986032915c1572bfb74b224fcc2e4e8ba7c Author: Arnaldo Carvalho de Melo <acme@redhat.com> Date: Mon Sep 8 13:26:35 2014 -0300 perf evlist: Refcount mmaps We need to know how many fds are using a perf mmap via PERF_EVENT_IOC_SET_OUTPUT, so that we can know when to ditch an mmap, refcount it. This commit added 'int refcnt' to struct perf_mmap and the addition makes the event_copy element no longer 8-byte aligned. Fix by adding __attribute__((aligned(8))) to the event_copy struct member. Signed-off-by: David Ahern <david.ahern@oracle.com> Link: http://lkml.kernel.org/r/1424304198-92028-1-git-send-email-david.ahern@oracle.com [ Switched from 'int pad;' to using __attribute__, David tested/acked that ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
75be989a |
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14-Feb-2015 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Adopt events_stats from perf_session For tools that don't deal with perf.data files, thus do not need to use perf_session. 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: 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-kglq67gvauq9tak02a4se00r@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
be199ada |
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21-Feb-2015 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Introduce set_filter_pids method We need to filter multiple pids in trace, i.e. trace itself, gnome-terminal, X.org, etc. 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: 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-frtpkg7qapqwf7asa35wf8am@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
cfd70a26 |
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21-Feb-2015 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Introduce set_filter_pid method To filter out events for a certain pid, for instance, when tracing system wide, so that the tracer itself doesn't creates an event loop. 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: 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-byoia9dzu4gmkdv87etnd9zf@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
e2726d99 |
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22-Jan-2015 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
tools lib fs: Adopt debugfs open strerrno method As this is not specific to an evlist and may be used with other tools. 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-a9up9mivx1pzdf5tqrqsx62d@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> tools/perf/util/include/asm/hash.h
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#
956fa571 |
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11-Dec-2014 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Introduce strerror_mmap method To pretty print hints about perf_evlist__mmap errors. Will be used in 'trace' in the next patch. 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: 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-2g3gczfwyz0xt3we0s15mqqt@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
724ce97e |
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16-Oct-2014 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Add missing 'struct option' forward declaration It was being found, by chance, because evsel.h needlessly includes util/cgroup.h, which will be sorted out in a following patch. 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-xsvxr747wkkpg1ay9dramorr@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
82396986 |
|
08-Sep-2014 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Refcount mmaps We need to know how many fds are using a perf mmap via PERF_EVENT_IOC_SET_OUTPUT, so that we can know when to ditch an mmap, refcount it. v2: Automatically unmap it when the refcount hits one, which will happen when all fds are filtered by perf_evlist__filter_pollfd(), in later patches. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> 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: Jiri Olsa <jolsa@kernel.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/20140908153824.GG2773@kernel.org Link: http://lkml.kernel.org/n/tip-cpv7v2lw0g74ucmxa39xdpms@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
1b85337d |
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03-Sep-2014 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
tools lib api: Adopt fdarray class from perf's evlist The extensible file description array that grew in the perf_evlist class can be useful for other tools, as it is not something that only evlists need, so move it to tools/lib/api/fd to ease sharing it. v2: Don't use {} like in: libapi_dirs: $(QUIET_MKDIR)mkdir -p $(OUTPUT){fs,fd}/ in Makefiles, as it will not work in some systems, as in ubuntu13.10. v3: Add fd/*.[ch] to LIBAPIKFS_SOURCES (Fix from Jiri Olsa) v4: Leave the fcntl(fd, O_NONBLOCK) in the evlist layer, remains to be checked if it is really needed there, but has no place in the fdarray class (Fix from Jiri Olsa) v5: Remove evlist details from fdarray grow/filter tests. Improve it a bit doing more tests about expected internal state. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> 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: Jiri Olsa <jolsa@kernel.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/n/tip-kleuni3hckbc3s0lu6yb9x40@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
f66a889d |
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18-Aug-2014 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Introduce poll method for common code idiom Since we have access two evlist members in all these poll calls, provide a helper. This will also help to make the patch introducing the pollfd class more clear, as the evlist specific uses will be hiden away perf_evlist__poll(). Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.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: Jiri Olsa <jolsa@kernel.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/n/tip-jr9d4aop4lvy9453qahbcgp0@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
ad6765dd |
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18-Aug-2014 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Allow growing pollfd on add method This way we will be able to add more file descriptors to be polled, like stdin or some timer fd. At this point we might as well yank the pollfd class from evlist so that it can be used in other places. Cc: Adrian Hunter <adrian.hunter@intel.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: Jiri Olsa <jolsa@kernel.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/n/tip-o2mzsjl7taumsoc35ryol00i@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
1ddec7f0 |
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12-Aug-2014 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Introduce perf_evlist__filter_pollfd method To remove all entries in evlist->pollfd[] that have revents matching at least one of the bits in the specified mask. It'll adjust evlist->nr_fds to the number of unfiltered fds and will return this value, as a convenience and to avoid requiring direct access to internal state of perf_evlist objects. This will be used after polling the evlist fds so that we remove fds that were closed by the kernel. Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.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: 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-y2sca7z3wicvvy40a50lozwm@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
1c65056c |
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31-Jul-2014 |
Adrian Hunter <adrian.hunter@intel.com> |
perf evlist: Add perf_evlist__enable_event_idx() Add a function to enable a specific event within a specific perf event buffer. 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/1406786474-9306-14-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
60b0896c |
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31-Jul-2014 |
Adrian Hunter <adrian.hunter@intel.com> |
perf evlist: Add perf_evlist__set_tracking_event() Add a function to change which event is used to track mmap, comm and task events. This is needed with Instruction Tracing because the Instruction Tracing event must come first but cannot be used for tracking because it will be disabled under some circumstances. 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/1406786474-9306-10-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
0050f7aa |
|
10-Jan-2014 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Introduce evlist__for_each() & friends For the common evsel list traversal, so that it becomes more compact. Use the opportunity to start ditching the 'perf_' from 'perf_evlist__', as discussed, as the whole conversion touches a lot of places, lets do it piecemeal when we have the chance due to other work, like in this case. 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-qnkx7dzm2h6m6uptkfk03ni6@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
03ad9747 |
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03-Jan-2014 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Move destruction of maps to evlist destructor Instead of requiring tools to do an extra destructor call just before calling perf_evlist__delete. 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-0jd2ptzyikxb5wp7inzz2ah2@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
735f7e0b |
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03-Jan-2014 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Move the SIGUSR1 error reporting logic to prepare_workload So that we have the boilerplate in the preparation method, instead of open coded in tools wanting the reporting when the exec fails. 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-purbdzcphdveskh7wwmnm4t7@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
b4006796 |
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19-Dec-2013 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Rename 'perf_record_opts' to 'record_opts Reduce typing, functions use class__method convention, so unlikely to clash with other libraries. This actually was discussed in the "Link:" referenced message below. 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/r/20131112113427.GA4053@ghostprotocols.net Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
a025e4f0 |
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11-Dec-2013 |
Adrian Hunter <adrian.hunter@intel.com> |
perf evlist: Add perf_evlist__to_front() Add a function to move a selected event to the front of the list. This is needed because it is not possible to use the PERF_EVENT_IOC_SET_OUTPUT IOCTL from an Instruction Tracing event to a non-Instruction Tracing event. Thus the Instruction Tracing event must come first. Cc: Andi Kleen <ak@linux.intel.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/1386765443-26966-24-git-send-email-alexander.shishkin@linux.intel.com Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
c09ec622 |
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11-Dec-2013 |
Adrian Hunter <adrian.hunter@intel.com> |
perf evlist: Add can_select_event() method Add a function to determine whether an event can be selected. This function is needed to allow a tool to automatically select additional events, but only if they are available. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.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/1386765443-26966-18-git-send-email-alexander.shishkin@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
602ad878 |
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12-Nov-2013 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf target: Shorten perf_target__ to target__ Getting unwieldly long, for this app domain should be descriptive enough and the use of __ to separate the class from the method names should help with avoiding clashes with other code bases. Reported-by: David Ahern <dsahern@gmail.com> Suggested-by: Ingo Molnar <mingo@kernel.org> 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/r/20131112113427.GA4053@ghostprotocols.net Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
a94d342b |
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30-Oct-2013 |
Peter Zijlstra <peterz@infradead.org> |
tools/perf: Add required memory barriers To match patch bf378d341e48 ("perf: Fix perf ring buffer memory ordering") change userspace to also adhere to the ordering outlined. Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: Michael Neuling <mikey@neuling.org> Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> Cc: james.hogan@imgtec.com Cc: Vince Weaver <vince@deater.net> Cc: Victor Kaplansky <VICTORK@il.ibm.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Anton Blanchard <anton@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Cc: Michael Ellerman <michael@ellerman.id.au> Link: http://lkml.kernel.org/r/20131030104246.GH16117@laptop.programming.kicks-ass.net Signed-off-by: Ingo Molnar <mingo@kernel.org>
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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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#
714647bd |
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05-Nov-2013 |
Jiri Olsa <jolsa@redhat.com> |
perf tools: Check maximum frequency rate for record/top Adding the check for maximum allowed frequency rate defined in following file: /proc/sys/kernel/perf_event_max_sample_rate When we cross the maximum value we fail and display detailed error message with advise. $ perf record -F 3000 ls Maximum frequency rate (2000) reached. Please use -F freq option with lower value or consider tweaking /proc/sys/kernel/perf_event_max_sample_rate. In case user does not specify the frequency and the default value cross the maximum, we display warning and set the frequency value to the current maximum. $ perf record ls Lowering default frequency rate to 2000. Please consider tweaking /proc/sys/kernel/perf_event_max_sample_rate. Same messages are used for 'perf top'. Signed-off-by: Jiri Olsa <jolsa@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.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@elte.hu> 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/1383660887-1734-4-git-send-email-jolsa@redhat.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
8e50d384 |
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24-Oct-2013 |
Zhouyi Zhou <zhouzhouyi@gmail.com> |
perf tools: Fixup mmap event consumption The tail position of the event buffer should only be modified after actually use that event. If not the event buffer could be invalid before use, and segment fault occurs when invoking perf top -G. Signed-off-by: Zhouyi Zhou <yizhouzhou@ict.ac.cn> Cc: David Ahern <dsahern@gmail.com> Cc: Zhouyi Zhou <yizhouzhou@ict.ac.cn> Link: http://lkml.kernel.org/r/1382600613-32177-1-git-send-email-zhouzhouyi@gmail.com [ Simplified the logic using exit gotos and renamed write_tail method to mmap_consume ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
a8f23d8f |
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17-Oct-2013 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf trace: Improve messages related to /proc/sys/kernel/perf_event_paranoid kernel/events/core.c has: /* * perf event paranoia level: * -1 - not paranoid at all * 0 - disallow raw tracepoint access for unpriv * 1 - disallow cpu events for unpriv * 2 - disallow kernel profiling for unpriv */ int sysctl_perf_event_paranoid __read_mostly = 1; So, with the default being 1, a non-root user can trace his stuff: [acme@zoo ~]$ cat /proc/sys/kernel/perf_event_paranoid 1 [acme@zoo ~]$ yes > /dev/null & [1] 15338 [acme@zoo ~]$ trace -p 15338 | head -5 0.005 ( 0.005 ms): write(fd: 1</dev/null>, buf: 0x7fe6db765000, count: 4096 ) = 4096 0.045 ( 0.001 ms): write(fd: 1</dev/null>, buf: 0x7fe6db765000, count: 4096 ) = 4096 0.085 ( 0.001 ms): write(fd: 1</dev/null>, buf: 0x7fe6db765000, count: 4096 ) = 4096 0.125 ( 0.001 ms): write(fd: 1</dev/null>, buf: 0x7fe6db765000, count: 4096 ) = 4096 0.165 ( 0.001 ms): write(fd: 1</dev/null>, buf: 0x7fe6db765000, count: 4096 ) = 4096 [acme@zoo ~]$ [acme@zoo ~]$ trace --duration 1 sleep 1 1002.148 (1001.218 ms): nanosleep(rqtp: 0x7fff46c79250 ) = 0 [acme@zoo ~]$ [acme@zoo ~]$ trace -- usleep 1 | tail -5 0.905 ( 0.002 ms): brk( ) = 0x1c82000 0.910 ( 0.003 ms): brk(brk: 0x1ca3000 ) = 0x1ca3000 0.913 ( 0.001 ms): brk( ) = 0x1ca3000 0.990 ( 0.059 ms): nanosleep(rqtp: 0x7fffe31a3280 ) = 0 0.995 ( 0.000 ms): exit_group( [acme@zoo ~]$ But can't do system wide tracing: [acme@zoo ~]$ trace Error: Operation not permitted. Hint: Check /proc/sys/kernel/perf_event_paranoid setting. Hint: For system wide tracing it needs to be set to -1. Hint: The current value is 1. [acme@zoo ~]$ [acme@zoo ~]$ trace --cpu 0 Error: Operation not permitted. Hint: Check /proc/sys/kernel/perf_event_paranoid setting. Hint: For system wide tracing it needs to be set to -1. Hint: The current value is 1. [acme@zoo ~]$ If the paranoid level is >= 2, i.e. turn this perf stuff off for !root users: [acme@zoo ~]$ sudo sh -c 'echo 2 > /proc/sys/kernel/perf_event_paranoid' [acme@zoo ~]$ cat /proc/sys/kernel/perf_event_paranoid 2 [acme@zoo ~]$ [acme@zoo ~]$ trace usleep 1 Error: Permission denied. Hint: Check /proc/sys/kernel/perf_event_paranoid setting. Hint: For your workloads it needs to be <= 1 Hint: For system wide tracing it needs to be set to -1. Hint: The current value is 2. [acme@zoo ~]$ [acme@zoo ~]$ trace Error: Permission denied. Hint: Check /proc/sys/kernel/perf_event_paranoid setting. Hint: For your workloads it needs to be <= 1 Hint: For system wide tracing it needs to be set to -1. Hint: The current value is 2. [acme@zoo ~]$ [acme@zoo ~]$ trace --cpu 1 Error: Permission denied. Hint: Check /proc/sys/kernel/perf_event_paranoid setting. Hint: For your workloads it needs to be <= 1 Hint: For system wide tracing it needs to be set to -1. Hint: The current value is 2. [acme@zoo ~]$ If the user manages to get what he/she wants, convincing root not to be paranoid at all... [root@zoo ~]# echo -1 > /proc/sys/kernel/perf_event_paranoid [root@zoo ~]# cat /proc/sys/kernel/perf_event_paranoid -1 [root@zoo ~]# [acme@zoo ~]$ ps -eo user,pid,comm | grep Xorg root 729 Xorg [acme@zoo ~]$ [acme@zoo ~]$ trace -a --duration 0.001 -e \!select,ioctl,writev | grep Xorg | head -5 23.143 ( 0.003 ms): Xorg/729 setitimer(which: REAL, value: 0x7fffaadf16e0 ) = 0 23.152 ( 0.004 ms): Xorg/729 read(fd: 31, buf: 0x2544af0, count: 4096 ) = 8 23.161 ( 0.002 ms): Xorg/729 read(fd: 31, buf: 0x2544af0, count: 4096 ) = -1 EAGAIN Resource temporarily unavailable 23.175 ( 0.002 ms): Xorg/729 setitimer(which: REAL, value: 0x7fffaadf16e0 ) = 0 23.235 ( 0.002 ms): Xorg/729 setitimer(which: REAL, value: 0x7fffaadf16e0 ) = 0 [acme@zoo ~]$ 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-di28olfwd28rvkox7v3hqhu1@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
6ef068cb |
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16-Oct-2013 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Introduce perf_evlist__strerror_tp method Out of 'perf trace', should be used by other tools that uses tracepoints. 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: Ramkumar Ramachandra <artagnon@gmail.com> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-lyvtxhchz4ga8fwht15x8wou@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
a65cb4b9 |
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02-Oct-2013 |
Jiri Olsa <jolsa@redhat.com> |
perf evlist: Fix perf_evlist__mmap_read event overflow The perf_evlist__mmap_read used 'union perf_event' as a placeholder for event crossing the mmap boundary. This is ok for sample shorter than ~PATH_MAX. However we could grow up to the maximum sample size which is 16 bits max. I hit this overflow issue when using 'perf top -G dwarf' which produces sample with the size around 8192 bytes. We could configure any valid sample size here using: '-G dwarf,size'. Using array with sample max size instead for the event placeholder. Also adding another safe check for the dynamic size of the user stack. TODO: The 'struct perf_mmap' is quite big now, maybe we could use some lazy allocation for event_copy size. Signed-off-by: Jiri Olsa <jolsa@redhat.com> Acked-by: David Ahern <dsahern@gmail.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@elte.hu> 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/1380721599-24285-1-git-send-email-jolsa@redhat.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
b22d54b0 |
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31-Aug-2013 |
Jiri Olsa <jolsa@redhat.com> |
perf evlist: Introduce perf_evlist__new_default function Adding new common function to create evlist with default event. It spares some code lines in automated tests. Signed-off-by: Jiri Olsa <jolsa@redhat.com> Cc: Andi Kleen <ak@linux.intel.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@elte.hu> 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/1378031796-17892-4-git-send-email-jolsa@redhat.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
994a1f78 |
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31-Aug-2013 |
Jiri Olsa <jolsa@redhat.com> |
perf tools: Check mmap pages value early Move the check of the mmap_pages value to the options parsing time, so we could rely on this value on other parts of code. Related changes come in the next patches. Also changes perf_evlist::mmap_len to proper size_t type. Signed-off-by: Jiri Olsa <jolsa@redhat.com> Cc: Andi Kleen <ak@linux.intel.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@elte.hu> 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/1378031796-17892-2-git-send-email-jolsa@redhat.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
395c3070 |
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31-Aug-2013 |
Adrian Hunter <adrian.hunter@intel.com> |
perf tests: Add 'keep tracking' test Add a test for the newly added PERF_COUNT_SW_DUMMY event. The test checks that tracking events continue when an event is disabled but a dummy software event is not disabled. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Jiri Olsa <jolsa@redhat.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/1377975053-3811-4-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
a2f2804a |
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28-Aug-2013 |
David Ahern <dsahern@gmail.com> |
perf evlist: Add tracepoint lookup by name Will be used by upcoming perf-trace replay option. Signed-off-by: David Ahern <dsahern@gmail.com> Cc: Adrian Hunter <adrian.hunter@intel.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/r/1377750593-48046-2-git-send-email-dsahern@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
75562573 |
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27-Aug-2013 |
Adrian Hunter <adrian.hunter@intel.com> |
perf tools: Add support for PERF_SAMPLE_IDENTIFIER Enable parsing of samples with sample format bit PERF_SAMPLE_IDENTIFIER. In addition, if the kernel supports it, prefer it to selecting PERF_SAMPLE_ID thereby allowing non-matching sample types. 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/1377591794-30553-8-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
932a3594 |
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11-Oct-2012 |
Jiri Olsa <jolsa@redhat.com> |
perf evlist: Add perf_evlist__id2sid method to get event ID related data This will be helpful for PERF_FORMAT_GROUP samples where we need to store ID related period value for each event. Signed-off-by: Jiri Olsa <jolsa@redhat.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> 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/n/tip-twmlgsbyim97p7cyohjwb1df@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
9ede473c |
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10-Oct-2012 |
Jiri Olsa <jolsa@redhat.com> |
perf tools: Add support for parsing PERF_SAMPLE_READ sample type Adding support to parse out the PERF_SAMPLE_READ sample bits. The code contains both single and group format specification. This code parse out and prepare PERF_SAMPLE_READ data into the perf_sample struct. It will be used for group leader sampling feature comming in shortly. Signed-off-by: Jiri Olsa <jolsa@redhat.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> 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/n/tip-0tgdoln5rwk3wocshb442cl3@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
a74b4b66 |
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14-Mar-2013 |
Namhyung Kim <namhyung.kim@lge.com> |
perf evlist: Introduce perf_evlist__close() It's a pair of perf_evlist__open(). Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1363326533-3310-1-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
55e162ea |
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11-Mar-2013 |
Namhyung Kim <namhyung.kim@lge.com> |
perf evlist: Add want_signal parameter to perf_evlist__prepare_workload() In case a caller doesn't want to receive SIGUSR1 when the child failed to exec(). Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1362987798-24969-6-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
119fa3c9 |
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11-Mar-2013 |
Namhyung Kim <namhyung.kim@lge.com> |
perf evlist: Do not pass struct record_opts to perf_evlist__prepare_workload() Since it's only used for checking ->pipe_output, we can pass the result directly. Now the perf_evlist__prepare_workload() don't have a dependency of struct perf_record_opts, it can be called from other places like perf stat. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1362987798-24969-5-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
6ef73ec4 |
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11-Mar-2013 |
Namhyung Kim <namhyung.kim@lge.com> |
perf evlist: Pass struct perf_target to perf_evlist__prepare_workload() It's a preparation step of removing @opts arg from the function so that it can be used more widely. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1362987798-24969-4-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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334fe7a3 |
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11-Mar-2013 |
Namhyung Kim <namhyung.kim@lge.com> |
perf evlist: Remove cpus and threads arguments from perf_evlist__new() It's almost always used with NULL for both arguments. Get rid of the arguments from the signature and use perf_evlist__set_maps() if needed. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1362987798-24969-1-git-send-email-namhyung@kernel.org [ committer note: replaced spaces with tabs in some of the affected lines ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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0479b8b9 |
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05-Feb-2013 |
David Ahern <dsahern@gmail.com> |
perf evlist: Make event_copy local to mmaps I am getting segfaults *after* the time sorting of perf samples where the event type is off the charts: (gdb) bt \#0 0x0807b1b2 in hists__inc_nr_events (hists=0x80a99c4, type=1163281902) at util/hist.c:1225 \#1 0x08070795 in perf_session_deliver_event (session=0x80a9b90, event=0xf7a6aff8, sample=0xffffc318, tool=0xffffc520, file_offset=0) at util/session.c:884 \#2 0x0806f9b9 in flush_sample_queue (s=0x80a9b90, tool=0xffffc520) at util/session.c:555 \#3 0x0806fc53 in process_finished_round (tool=0xffffc520, event=0x0, session=0x80a9b90) at util/session.c:645 This is bizarre because the event has already been processed once -- before it was added to the samples queue -- and the event was found to be sane at that time. There seem to be 2 causes: 1. perf_evlist__mmap_read updates the read location even though there are outstanding references to events sitting in the mmap buffers via the ordered samples queue. 2. There is a single evlist->event_copy for all evlist entries. event_copy is used to handle an event wrapping at the mmap buffer boundary. This patch addresses the second problem - making event_copy local to each perf_mmap. With this change my highly repeatable use case no longer fails. The first problem is much more complicated and will be the subject of a future patch. 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> Link: http://lkml.kernel.org/r/1360098762-61827-1-git-send-email-dsahern@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
97f63e4a |
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22-Jan-2013 |
Namhyung Kim <namhyung.kim@lge.com> |
perf tools: Keep group information Add a few of group-related field in struct perf_{evlist,evsel} so that the group information in a evlist can be known easily. It only counts groups which have more than 1 members since leader-only groups are treated as non-group events. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Acked-by: Jiri Olsa <jolsa@redhat.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.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/1358845787-1350-2-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
f77a9518 |
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10-Dec-2012 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Set the leader in the perf_evlist__config method Since we need to ensure the leader is set before configuring the evsel perf_event_attrs. Reducing the boilerplate needed by tools, helping, for instance, 'perf trace', that wasn't setting the leader. 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-22shm0ptkch2kgl7rtqlligx@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
e60fc847 |
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03-Oct-2012 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Remove some unused methods Those were introduced in a previous attempt at implementing 'trace', but are not being used anywhere, ditch 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-ruhm5gocoh32pb7gnr0ai6gh@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
39876e7d |
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03-Oct-2012 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Introduce add_newtp method To reduce the boilerplate of creating and adding a new tracepoint to an evlist. 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-4z90i79gnmsza2czv2dhdrb7@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
745cefc5 |
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26-Sep-2012 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Introduce set_filter() method To apply a filter to all the evsels in an evlist. 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-v9x3q9rv4caxtox7wtjpchq5@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
1491a632 |
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26-Sep-2012 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Renane set_filters method to apply_filters Because that is what it really does, i.e. it applies the filters that were parsed from the command line and stashed into the evsels they refer to. We'll need the set_filter method name to actually apply a filter to all the evsels in an evlist, for instance, to ask that a syswide tracer doesn't trace itself. 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-v9x3q9rv4caxtox7wtjpchq5@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
0807d2d8 |
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25-Sep-2012 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evsel: Know if byte swap is needed Instead of passing it around for parsing as an explicit parameter, will help with reading tracepoint fields when not using a perf session or pevent structure, i.e. for non perf.data centered workflows. 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-qa67ikv2sm49cwa7dyjhhp6g@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
78f067b3 |
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06-Sep-2012 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Add fprintf method For debugging, etc. 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-fjimge1ovgh976qlt8dtmlp0@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
0c21f736 |
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14-Aug-2012 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Introduce evsel list accessors To replace the longer list_entry constructs for things that are widely used: perf_evlist__{first,last}(evlist) perf_evsel__next(evsel) Acked-by: Jiri Olsa <jolsa@redhat.com> Acked-by: Namhyung Kim <namhyung@gmail.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@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-ng7azq26wg1jd801qqpcozwp@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
63dab225 |
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14-Aug-2012 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Rename __group method to __set_leader Just like was done for parse_events__set_leader. Also we need to have the list_entry set_leader method in evlist.c so that we don't grow another dep in the python binding: # ~acme/git/linux/tools/perf/python/twatch.py Traceback (most recent call last): File "/home/acme/git/linux/tools/perf/python/twatch.py", line 16, in <module> import perf ImportError: /home/acme/git/build/perf/python/perf.so: undefined symbol: parse_events__set_leader And also remove a pr_debug from evsel.c so that we avoid this one too: # ~acme/git/linux/tools/perf/python/twatch.py Traceback (most recent call last): File "/home/acme/git/linux/tools/perf/python/twatch.py", line 16, in <module> import perf ImportError: /home/acme/git/build/perf/python/perf.so: undefined symbol: eprintf Acked-by: Jiri Olsa <jolsa@redhat.com> Acked-by: Namhyung Kim <namhyung@gmail.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@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-0hk9dazg9pora9jylkqngovm@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
6a4bb04c |
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07-Aug-2012 |
Jiri Olsa <jolsa@redhat.com> |
perf tools: Enable grouping logic for parsed events This patch adds a functionality that allows to create event groups based on the way they are specified on the command line. Adding functionality to the '{}' group syntax introduced in earlier patch. The current '--group/-g' option behaviour remains intact. If you specify it for record/stat/top command, all the specified events become members of a single group with the first event as a group leader. With the new '{}' group syntax you can create group like: # perf record -e '{cycles,faults}' ls resulting in single event group containing 'cycles' and 'faults' events, with cycles event as group leader. All groups are created with regards to threads and cpus. Thus recording an event group within a 2 threads on server with 4 CPUs will create 8 separate groups. Examples (first event in brackets is group leader): # 1 group (cpu-clock,task-clock) perf record --group -e cpu-clock,task-clock ls perf record -e '{cpu-clock,task-clock}' ls # 2 groups (cpu-clock,task-clock) (minor-faults,major-faults) perf record -e '{cpu-clock,task-clock},{minor-faults,major-faults}' ls # 1 group (cpu-clock,task-clock,minor-faults,major-faults) perf record --group -e cpu-clock,task-clock -e minor-faults,major-faults ls perf record -e '{cpu-clock,task-clock,minor-faults,major-faults}' ls # 2 groups (cpu-clock,task-clock) (minor-faults,major-faults) perf record -e '{cpu-clock,task-clock} -e '{minor-faults,major-faults}' \ -e instructions ls # 1 group # (cpu-clock,task-clock,minor-faults,major-faults,instructions) perf record --group -e cpu-clock,task-clock \ -e minor-faults,major-faults -e instructions ls perf record -e '{cpu-clock,task-clock,minor-faults,major-faults,instructions}' ls It's possible to use standard event modifier for a group, which spans over all events in the group and updates each event modifier settings, for example: # perf record -r '{faults:k,cache-references}:p' resulting in ':kp' modifier being used for 'faults' and ':p' modifier being used for 'cache-references' event. Reviewed-by: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Jiri Olsa <jolsa@redhat.com> Acked-by: Peter Zijlstra <peterz@infradead.org> Cc: Andi Kleen <andi@firstfloor.org> Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ulrich Drepper <drepper@gmail.com> Link: http://lkml.kernel.org/n/tip-ho42u0wcr8mn1otkalqi13qp@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
a3f698fe |
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01-Aug-2012 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evsel: Adopt parse_sample method from perf_event Since we need evsel->{attr.{sample_{id_all,type}},sample_size}, reducing the number of parameters tools have to pass. 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-wdtmgak0ihgsmw1brb54a8h4@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
cb0b29e0 |
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02-Aug-2012 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Introduce perf_evlist__parse_sample That is a more compact form of perf_session__parse_sample and to support multiple evlists per perf_session is the way to go anyway. 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-vkxx3j5qktoj11bvcwmfjj13@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
da378962 |
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27-Jun-2012 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Stop using a global trace events description list The pevent thing is per perf.data file, so I made it stop being static and become a perf_session member, so tools processing perf.data files use perf_session and _there_ we read the trace events description into session->pevent and then change everywhere to stop using that single global pevent variable and use the per session one. Note that it _doesn't_ fall backs to trace__event_id, as we're not interested at all in what is present in the /sys/kernel/debug/tracing/events in the workstation doing the analysis, just in what is in the perf.data file. This patch also introduces perf_session__set_tracepoints_handlers that is the perf perf.data/session way to associate handlers to tracepoint events by resolving their IDs using the events descriptions stored in a perf.data file. Make 'perf sched' use it. Reported-by: Dmitry Antipov <dmitry.antipov@linaro.org> Tested-by: Dmitry Antipov <dmitry.antipov@linaro.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: linaro-dev@lists.linaro.org Cc: patches@linaro.org Link: http://lkml.kernel.org/r/20120625232016.GA28525@infradead.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
79695e1b |
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30-May-2012 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf stat: Initialize default events wrt exclude_{guest,host} When no event is specified the tools use perf_evlist__add_default(), that will call event_attr_init to initialize the KVM exclusion bits. When the change was made to the tools so that by default guest samples would be excluded, the changes were made just to the parsing routines and to perf_evlist__add_default(), not to perf_evlist__add_attrs, that is used so far just by perf stat to add multiple events, according to the level of detail specified. Recently the tools were changed to reconstruct the event name from all the details in perf_event_attr, not just from .type and .config, but taking into account all the feature bits (.exclude_{guest,host,user,kernel,etc}, .precise_ip, etc). That is when we noticed that the default for perf stat wasn't the one for the rest of the tools, i.e. the .exclude_guest bit wasn't being set. I.e. the default, that doesn't call event_attr_init was showing the :HG modifier: $ perf stat usleep 1 Performance counter stats for 'usleep 1': 0.942119 task-clock # 0.454 CPUs utilized 1 context-switches # 0.001 M/sec 0 CPU-migrations # 0.000 K/sec 126 page-faults # 0.134 M/sec 693,193 cycles:HG # 0.736 GHz [40.11%] 407,461 stalled-cycles-frontend:HG # 58.78% frontend cycles idle [72.29%] 365,403 stalled-cycles-backend:HG # 52.71% backend cycles idle 465,982 instructions:HG # 0.67 insns per cycle # 0.87 stalled cycles per insn 89,760 branches:HG # 95.275 M/sec 6,178 branch-misses:HG # 6.88% of all branches 0.002077228 seconds time elapsed While if one explicitely specifies the same events, which will make the parsing code to be called and thus event_attr_init is called: $ perf stat -e task-clock,context-switches,migrations,page-faults,cycles,stalled-cycles-frontend,stalled-cycles-backend,instructions,branches,branch-misses usleep 1 Performance counter stats for 'usleep 1': 1.040349 task-clock # 0.500 CPUs utilized 2 context-switches # 0.002 M/sec 0 CPU-migrations # 0.000 K/sec 127 page-faults # 0.122 M/sec 587,966 cycles # 0.565 GHz [13.18%] 459,167 stalled-cycles-frontend # 78.09% frontend cycles idle 390,249 stalled-cycles-backend # 66.37% backend cycles idle 504,006 instructions # 0.86 insns per cycle # 0.91 stalled cycles per insn 96,455 branches # 92.714 M/sec 6,522 branch-misses # 6.76% of all branches [96.12%] 0.002078681 seconds time elapsed Fix it by introducing a perf_evlist__add_default_attrs method that will call evlist_attr_init in all the perf_event_attr entries before adding the events. Reported-by: Ingo Molnar <mingo@kernel.org> 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-4eysr236r0pgiyum9epwxw7s@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
b809ac10 |
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25-Apr-2012 |
Namhyung Kim <namhyung.kim@lge.com> |
perf evlist: Make create_maps() take struct perf_target Now we have all information that needed to create cpu/thread maps in struct perf_target, it'd be better using it as an argument. Signed-off-by: Namhyung Kim <namhyung.kim@lge.com> Reviewed-by: David Ahern <dsahern@gmail.com> Cc: David Ahern <dsahern@gmail.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1335417327-11796-6-git-send-email-namhyung.kim@lge.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
b52956c9 |
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08-Feb-2012 |
David Ahern <dsahern@gmail.com> |
perf tools: Allow multiple threads or processes in record, stat, top Allow a user to collect events for multiple threads or processes using a comma separated list. e.g., collect data on a VM and its vhost thread: perf top -p 21483,21485 perf stat -p 21483,21485 -ddd perf record -p 21483,21485 or monitoring vcpu threads perf top -t 21488,21489 perf stat -t 21488,21489 -ddd perf record -t 21488,21489 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/1328718772-16688-1-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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#
0529bc1f |
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27-Jan-2012 |
Jiri Olsa <jolsa@redhat.com> |
perf evlist: Make splice_list_tail method public Making perf_evlist__splice_list_tail globaly accessible. It is used in the upcomming paches. Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Link: http://lkml.kernel.org/r/1327674868-10486-2-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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#
0d37aa34 |
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19-Jan-2012 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Introduce per user view The new --uid command line option will show only the tasks for a given user, using the proc interface to figure out the existing tasks. Kernel work is needed to close races at startup, but this should already be useful in many use cases. 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-bdnspm000gw2l984a2t53o8z@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
806fb630 |
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29-Nov-2011 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Always do automatic allocation of pollfd and mmap structures At first tools were required to do that, but while writing the python bindings to simplify the API I made them auto-allocate when needed. This just makes record, stat and top use that auto allocation, simplifying them a bit. 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-iokhcvkzzijr3keioubx8hlq@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
ee29be62 |
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28-Nov-2011 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf tools: Save some loops using perf_evlist__id2evsel Since we already ask for PERF_SAMPLE_ID and use it to quickly find the associated evsel, add handler func + data to struct perf_evsel to avoid using chains of if(strcmp(event_name)) and also to avoid all the linear list searches via trace_event_find. To demonstrate the technique convert 'perf sched' to it: # perf sched record sleep 5m And then: Performance counter stats for '/tmp/oldperf sched lat': 646.929438 task-clock # 0.999 CPUs utilized 9 context-switches # 0.000 M/sec 0 CPU-migrations # 0.000 M/sec 20,901 page-faults # 0.032 M/sec 1,290,144,450 cycles # 1.994 GHz <not supported> stalled-cycles-frontend <not supported> stalled-cycles-backend 1,606,158,439 instructions # 1.24 insns per cycle 339,088,395 branches # 524.151 M/sec 4,550,735 branch-misses # 1.34% of all branches 0.647524759 seconds time elapsed Versus: Performance counter stats for 'perf sched lat': 473.564691 task-clock # 0.999 CPUs utilized 9 context-switches # 0.000 M/sec 0 CPU-migrations # 0.000 M/sec 20,903 page-faults # 0.044 M/sec 944,367,984 cycles # 1.994 GHz <not supported> stalled-cycles-frontend <not supported> stalled-cycles-backend 1,442,385,571 instructions # 1.53 insns per cycle 308,383,106 branches # 651.195 M/sec 4,481,784 branch-misses # 1.45% of all branches 0.474215751 seconds time elapsed [root@emilia ~]# 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-1kbzpl74lwi6lavpqke2u2p3@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
81e36bff |
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11-Nov-2011 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Introduce id_hdr_size method out of perf_session We will need this when not using perf_session in cases like 'perf top' and strace where no perf.data file is created nor consumed. 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-za923wjc41q5xot5vrhuhj3j@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
50a682ce |
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09-Nov-2011 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Handle default value for 'pages' on mmap method Every tool that calls this and allows the user to override the value needs this logic. 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-lwscxpg57xfzahz5dmdfp9uz@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
35b9d88e |
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09-Nov-2011 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Introduce {prepare,start}_workload refactored from 'perf record' So that we can easily start a workload in other tools. 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-zdsksd4aphu0nltg2lpwsw3x@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
0f82ebc4 |
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08-Nov-2011 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evsel: Introduce config attr method Out of the code in 'perf record', so that we can share option parsing, etc. Eventually will be used by 'perf top', but first 'trace' will use it. 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-hzjqsgnte1esk90ytq0ap98v@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
a8c9ae18 |
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05-Nov-2011 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Introduce add_tracepoints method Convenient way of asking for tracepoint events to be added to an existing evlist. 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-0ylj4wrg54791u0baqb9swbb@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
50d08e47 |
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04-Nov-2011 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Introduce perf_evlist__add_attrs Replacing the open coded equivalents in 'perf stat'. 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-1btwadnf2tds2g07hsccsdse@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
727ab04e |
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25-Oct-2011 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Fix grouping of multiple events The __perf_evsel__open routing was grouping just the threads for that specific events per cpu when we want to group all threads in all events to the first fd opened on that cpu. So pass the xyarray with the first event, where the other events will be able to get that first per cpu fd. At some point top and record will switch to using perf_evlist__open that takes care of this detail and probably will also handle the fallback from hw to soft counters, etc. Reported-by: Deng-Cheng Zhu <dczhu@mips.com> Tested-by: Deng-Cheng Zhu <dczhu@mips.com> 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-ebm34rh098i9y9v4cytfdp0x@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
81cce8de |
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05-Oct-2011 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf browsers: Add live mode to the hists, annotate browsers This allows passing a timer to be run periodically, which will update the hists tree that then gers refreshed on the screen, just like the Live mode (symbol entries, annotation) we already have in 'perf top --tui'. Will be used by the new hist_entry/hists based 'top' tool. 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-2r44qd8oe4sagzcgoikl8qzc@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
764e16a3 |
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25-Aug-2011 |
David Ahern <dsahern@gmail.com> |
perf record: Create events initially disabled and enable after init perf-record currently creates events enabled. When doing a system wide collection (-a arg) this causes data collection for perf's initialization activities -- eg., perf_event__synthesize_threads(). For some events (e.g., context switch S/W event or tracepoints like syscalls) perf's initialization causes a lot of events to be captured frequently generating "Check IO/CPU overload!" warnings on larger systems (e.g., 2 socket, quad core, hyperthreading). perf's initialization phase can be skipped by creating events disabled and then enabling them once the initialization is done. 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/1314289075-14706-1-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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#
4152ab37 |
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25-Jul-2011 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Introduce 'disable' method To remove the last case of access to the FD() macro outside the library. Inspired by a patch by Borislav that moved the FD() macro to util.h, for namespace concerns I rather preferred to constrain it to ev{sel,list}.c. Cc: Borislav Petkov <bp@amd64.org> 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-qn893qsstcg366tkucu649qj@git.kernel.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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#
74429964 |
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21-May-2011 |
Frederic Weisbecker <fweisbec@gmail.com> |
perf tools: Move evlist sample helpers to evlist area These APIs should belong to evlist.c as they may not be exclusively tied to the headers. 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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#
aece948f |
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15-May-2011 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Fix per thread mmap setup The PERF_EVENT_IOC_SET_OUTPUT ioctl was returning -EINVAL when using --pid when monitoring multithreaded apps, as we can only share a ring buffer for events on the same thread if not doing per cpu. Fix it by using per thread ring buffers. Tested with: [root@felicio ~]# tuna -t 26131 -CP | nl 1 thread ctxt_switches 2 pid SCHED_ rtpri affinity voluntary nonvoluntary cmd 3 26131 OTHER 0 0,1 10814276 2397830 chromium-browse 4 642 OTHER 0 0,1 14688 0 chromium-browse 5 26148 OTHER 0 0,1 713602 115479 chromium-browse 6 26149 OTHER 0 0,1 801958 2262 chromium-browse 7 26150 OTHER 0 0,1 1271128 248 chromium-browse 8 26151 OTHER 0 0,1 3 0 chromium-browse 9 27049 OTHER 0 0,1 36796 9 chromium-browse 10 618 OTHER 0 0,1 14711 0 chromium-browse 11 661 OTHER 0 0,1 14593 0 chromium-browse 12 29048 OTHER 0 0,1 28125 0 chromium-browse 13 26143 OTHER 0 0,1 2202789 781 chromium-browse [root@felicio ~]# So 11 threads under pid 26131, then: [root@felicio ~]# perf record -F 50000 --pid 26131 [root@felicio ~]# grep perf_event /proc/`pidof perf`/maps | nl 1 7fa4a2538000-7fa4a25b9000 rwxs 00000000 00:09 4064 anon_inode:[perf_event] 2 7fa4a25b9000-7fa4a263a000 rwxs 00000000 00:09 4064 anon_inode:[perf_event] 3 7fa4a263a000-7fa4a26bb000 rwxs 00000000 00:09 4064 anon_inode:[perf_event] 4 7fa4a26bb000-7fa4a273c000 rwxs 00000000 00:09 4064 anon_inode:[perf_event] 5 7fa4a273c000-7fa4a27bd000 rwxs 00000000 00:09 4064 anon_inode:[perf_event] 6 7fa4a27bd000-7fa4a283e000 rwxs 00000000 00:09 4064 anon_inode:[perf_event] 7 7fa4a283e000-7fa4a28bf000 rwxs 00000000 00:09 4064 anon_inode:[perf_event] 8 7fa4a28bf000-7fa4a2940000 rwxs 00000000 00:09 4064 anon_inode:[perf_event] 9 7fa4a2940000-7fa4a29c1000 rwxs 00000000 00:09 4064 anon_inode:[perf_event] 10 7fa4a29c1000-7fa4a2a42000 rwxs 00000000 00:09 4064 anon_inode:[perf_event] 11 7fa4a2a42000-7fa4a2ac3000 rwxs 00000000 00:09 4064 anon_inode:[perf_event] [root@felicio ~]# 11 mmaps, one per thread since we didn't specify any CPU list, so we need one mmap per thread and: [root@felicio ~]# perf record -F 50000 --pid 26131 ^M ^C[ perf record: Woken up 79 times to write data ] [ perf record: Captured and wrote 20.614 MB perf.data (~900639 samples) ] [root@felicio ~]# perf report -D | grep PERF_RECORD_SAMPLE | cut -d/ -f2 | cut -d: -f1 | sort -n | uniq -c | sort -nr | nl 1 371310 26131 2 96516 26148 3 95694 26149 4 95203 26150 5 7291 26143 6 87 27049 7 76 661 8 60 29048 9 47 618 10 43 642 [root@felicio ~]# Ok, one of the threads, 26151 was quiescent, so no samples there, but all the others are there. Then, if I specify one CPU: [root@felicio ~]# perf record -F 50000 --pid 26131 --cpu 1 ^C[ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.680 MB perf.data (~29730 samples) ] [root@felicio ~]# perf report -D | grep PERF_RECORD_SAMPLE | cut -d/ -f2 | cut -d: -f1 | sort -n | uniq -c | sort -nr | nl 1 8444 26131 2 2584 26149 3 2518 26148 4 2324 26150 5 123 26143 6 9 661 7 9 29048 [root@felicio ~]# This machine has two cores, so fewer threads appeared on the radar, and: [root@felicio ~]# grep perf_event /proc/`pidof perf`/maps | nl 1 7f484b922000-7f484b9a3000 rwxs 00000000 00:09 4064 anon_inode:[perf_event] [root@felicio ~]# Just one mmap, as now we can use just one per-cpu buffer instead of the per-thread needed in the previous case. For global profiling: [root@felicio ~]# perf record -F 50000 -a ^C[ perf record: Woken up 26 times to write data ] [ perf record: Captured and wrote 7.128 MB perf.data (~311412 samples) ] [root@felicio ~]# grep perf_event /proc/`pidof perf`/maps | nl 1 7fb49b435000-7fb49b4b6000 rwxs 00000000 00:09 4064 anon_inode:[perf_event] 2 7fb49b4b6000-7fb49b537000 rwxs 00000000 00:09 4064 anon_inode:[perf_event] [root@felicio ~]# It uses per-cpu buffers. For just one thread: [root@felicio ~]# perf record -F 50000 --tid 26148 ^C[ perf record: Woken up 2 times to write data ] [ perf record: Captured and wrote 0.330 MB perf.data (~14426 samples) ] [root@felicio ~]# perf report -D | grep PERF_RECORD_SAMPLE | cut -d/ -f2 | cut -d: -f1 | sort -n | uniq -c | sort -nr | nl 1 9969 26148 [root@felicio ~]# [root@felicio ~]# grep perf_event /proc/`pidof perf`/maps | nl 1 7f286a51b000-7f286a59c000 rwxs 00000000 00:09 4064 anon_inode:[perf_event] [root@felicio ~]# Tested-by: David Ahern <dsahern@gmail.com> Tested-by: Lin Ming <ming.m.lin@intel.com> 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> Link: http://lkml.kernel.org/r/20110426204401.GB1746@ghostprotocols.net Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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#
a91e5431 |
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10-Mar-2011 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf session: Use evlist/evsel for managing perf.data attributes So that we can reuse things like the id to attr lookup routine (perf_evlist__id2evsel) that uses a hash table instead of the linear lookup done in the older perf_header_attr routines, etc. Also to make evsels/evlist more pervasive an API, simplyfing using the emerging perf lib. cc: Arun Sharma <arun@sharma-home.net> 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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#
3d3b5e95 |
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04-Mar-2011 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Split perf_evlist__id_hash The previous situation was to receive an fd from where to read the event ID. Spin off a routine for when we have the ID handy, not having to read it from some fd. 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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#
0a102479 |
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25-Feb-2011 |
Frederic Weisbecker <fweisbec@gmail.com> |
perf: Set filters before mmaping events We currently set the filters after we mmap the events, this is a race that let undesired events record themselves in the buffer before we had the time to set the filters. So set the filters before they can be recorded. That also librarizes the filters setting so that filtering can be done more easily from other tools than perf record later. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Steven Rostedt <rostedt@goodmis.org>
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7e2ed097 |
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30-Jan-2011 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Store pointer to the cpu and thread maps So that we don't have to pass it around to the several methods that needs it, simplifying usage. There is one case where we don't have the thread/cpu map in advance, which is in the parsing routines used by top, stat, record, that we have to wait till all options are parsed to know if a cpu or thread list was passed to then create those maps. For that case consolidate the cpu and thread map creation via perf_evlist__create_maps() out of the code in top and record, while also providing a perf_evlist__set_maps() for cases where multiple evlists share maps or for when maps that represent CPU sockets, for instance, get crafted out of topology information or subsets of threads in a particular application are to be monitored, providing more granularity in specifying which cpus and threads to monitor. 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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f8a95309 |
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30-Jan-2011 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Move evlist methods to evlist.c They were on evsel.c because they came from refactoring existing evsel methods, so, to make reviewing the changes easier, I kept it there, now its a plain move. 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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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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7bb41152 |
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29-Jan-2011 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Support non overwrite mode in perf_evlist__read_on_cpu I.e. stash the overwrite mode in struct perf_evlist and act accordingly in perf_evlist__read_on_cpu, not checking for overwrites and touching the tail after consuming one event, like perf record does, for instance. 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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ef1d1af2 |
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18-Jan-2011 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evsel: Introduce perf_evsel__{in,ex}it Out of the {con,des}structor, as in interpreted language bindings we will need to go back from the wrapper object to the real thing. In that case using container_of will save us to have an extra pointer in the perf_evsel struct. 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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04391deb |
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15-Jan-2011 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Steal mmap reading routine from 'perf top' Will be used in the upcoming 'perf test' entry for the evlist mmap routines. 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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70db7533 |
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12-Jan-2011 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Move the mmap array from perf_evsel Adopting the new model used in 'perf record', where we don't have a map per thread per cpu, instead we have an mmap per cpu, established on the first fd for that cpu and ask the kernel using the PERF_EVENT_IOC_SET_OUTPUT ioctl to send events for the other fds on that cpu for the one with the mmap. The methods moved from perf_evsel to perf_evlist, but for easing review they were modified in place, in evsel.c, the next patch will move the migrated methods to evlist.c. With this 'perf top' now uses the same mmap model used by 'perf record' and the next patches will make 'perf record' use these new routines, establishing a common codebase for both tools. 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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70082dd9 |
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12-Jan-2011 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evsel: Introduce mmap support Out of the code in 'perf top'. Record is next in line. 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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5c581041 |
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11-Jan-2011 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evlist: Adopt the pollfd array Allocating just the space needed for nr_cpus * nr_threads * nr_evsels, not the MAX_NR_CPUS and counters. LKML-Reference: <new-submission> 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> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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361c99a6 |
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11-Jan-2011 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
perf evsel: Introduce perf_evlist Killing two more perf wide global variables: nr_counters and evsel_list as a list_head. There are more operations that will need more fields in perf_evlist, like the pollfd for polling all the fds in a list of evsel instances. Use option->value to pass the evsel_list to parse_{events,filters}. LKML-Reference: <new-submission> 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> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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