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| author | Namhyung Kim <namhyung@kernel.org> | 2022-12-19 21:17:31 +0100 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2022-12-21 18:52:39 +0100 |
| commit | 5e3febe7b7b99f942311ddfa05bb06910d06b14d (patch) | |
| tree | 58baf1524707635c5f58de9b601e34fc37049c73 /tools/perf/util/probe-file.h | |
| parent | perf lock contention: Add -L/--lock-filter option (diff) | |
| download | linux-5e3febe7b7b99f942311ddfa05bb06910d06b14d.tar.xz linux-5e3febe7b7b99f942311ddfa05bb06910d06b14d.zip | |
perf lock contention: Support lock addr/name filtering for BPF
Likewise, add addr_filter BPF hash map and check it with the lock
address.
$ sudo ./perf lock con -ab -L tasklist_lock -- ./perf bench sched messaging
# Running 'sched/messaging' benchmark:
# 20 sender and receiver processes per group
# 10 groups == 400 processes run
Total time: 0.169 [sec]
contended total wait max wait avg wait type caller
18 174.09 us 25.31 us 9.67 us rwlock:W do_exit+0x36d
5 32.34 us 10.87 us 6.47 us rwlock:R do_wait+0x8b
4 15.41 us 4.73 us 3.85 us rwlock:W release_task+0x6e
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Blake Jones <blakejones@google.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Song Liu <song@kernel.org>
Cc: bpf@vger.kernel.org
Link: https://lore.kernel.org/r/20221219201732.460111-6-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/probe-file.h')
0 files changed, 0 insertions, 0 deletions