perf lock contention: Support lock type filtering for BPF
authorNamhyung Kim <namhyung@kernel.org>
Mon, 19 Dec 2022 20:17:29 +0000 (12:17 -0800)
committerArnaldo Carvalho de Melo <acme@redhat.com>
Wed, 21 Dec 2022 17:52:39 +0000 (14:52 -0300)
commit529772c4df286159fea453957a6052e20b90e8a8
tree4c40a895970292a77994ce4111edc6df44d045fe
parentb4a7eff93c39f985b33ac114f83ac5b325f42151
perf lock contention: Support lock type filtering for BPF

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>
tools/perf/builtin-lock.c
tools/perf/util/bpf_lock_contention.c
tools/perf/util/bpf_skel/lock_contention.bpf.c
tools/perf/util/lock-contention.h