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c698eaeb |
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06-Sep-2023 |
Rong Tao <rongtao@cestc.cn> |
selftests/bpf: trace_helpers.c: Optimize kallsyms cache Static ksyms often have problems because the number of symbols exceeds the MAX_SYMS limit. Like changing the MAX_SYMS from 300000 to 400000 in commit e76a014334a6("selftests/bpf: Bump and validate MAX_SYMS") solves the problem somewhat, but it's not the perfect way. This commit uses dynamic memory allocation, which completely solves the problem caused by the limitation of the number of kallsyms. At the same time, add APIs: load_kallsyms_local() ksym_search_local() ksym_get_addr_local() free_kallsyms_local() There are used to solve the problem of selftests/bpf updating kallsyms after attach new symbols during testmod testing. Signed-off-by: Rong Tao <rongtao@cestc.cn> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Acked-by: Jiri Olsa <jolsa@kernel.org> Acked-by: Stanislav Fomichev <sdf@google.com> Link: https://lore.kernel.org/bpf/tencent_C9BDA68F9221F21BE4081566A55D66A9700A@qq.com
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b2440443 |
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25-Oct-2022 |
Jiri Olsa <jolsa@kernel.org> |
selftests/bpf: Add kprobe_multi kmod attach api tests Adding kprobe_multi kmod attach api tests that attach bpf_testmod functions via bpf_program__attach_kprobe_multi_opts. Running it as serial test, because we don't want other tests to reload bpf_testmod while it's running. Acked-by: Song Liu <song@kernel.org> Signed-off-by: Jiri Olsa <jolsa@kernel.org> Link: https://lore.kernel.org/r/20221025134148.3300700-9-jolsa@kernel.org Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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