https://github.com/torvalds/linux
Revision 529772c4df286159fea453957a6052e20b90e8a8 authored by Namhyung Kim on 19 December 2022, 20:17:29 UTC, committed by Arnaldo Carvalho de Melo on 21 December 2022, 17:52:39 UTC
Likewise, add type_filter BPF hash map and check it when user gave a
lock type filter.
$ sudo ./perf lock con -ab -Y rwlock -- ./perf bench sched messaging
# Running 'sched/messaging' benchmark:
# 20 sender and receiver processes per group
# 10 groups == 400 processes run
Total time: 0.203 [sec]
contended total wait max wait avg wait type caller
15 156.19 us 19.45 us 10.41 us rwlock:W do_exit+0x36d
1 11.12 us 11.12 us 11.12 us rwlock:R do_wait+0x8b
1 5.09 us 5.09 us 5.09 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/20221219201732.460111-4-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
1 parent b4a7eff
Tip revision: 529772c4df286159fea453957a6052e20b90e8a8 authored by Namhyung Kim on 19 December 2022, 20:17:29 UTC
perf lock contention: Support lock type filtering for BPF
perf lock contention: Support lock type filtering for BPF
Tip revision: 529772c
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| .clang-format | -rw-r--r-- | 20.0 KB |
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