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| author | Namhyung Kim <namhyung@kernel.org> | 2022-12-09 11:07:26 -0800 | 
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2022-12-14 11:24:31 -0300 | 
| commit | 688d2e8de231c54e289b640547af246343732348 (patch) | |
| tree | 5b9f5c578a77035a26cdb4efa403977d9197c559 /lib/mpi/mpi-mod.c | |
| parent | eca949b2b4addd941d369d4c2014b87f3c3e203b (diff) | |
perf lock contention: Add -l/--lock-addr option
The -l/--lock-addr option is to implement per-lock-instance contention
stat using LOCK_AGGR_ADDR.  It displays lock address and optionally
symbol name if exists.
  $ sudo ./perf lock con -abl sleep 1
   contended   total wait     max wait     avg wait            address   symbol
           1     36.28 us     36.28 us     36.28 us   ffff92615d6448b8
           9     10.91 us      1.84 us      1.21 us   ffffffffbaed50c0   rcu_state
           1     10.49 us     10.49 us     10.49 us   ffff9262ac4f0c80
           8      4.68 us      1.67 us       585 ns   ffffffffbae07a40   jiffies_lock
           3      3.03 us      1.45 us      1.01 us   ffff9262277861e0
           1       924 ns       924 ns       924 ns   ffff926095ba9d20
           1       436 ns       436 ns       436 ns   ffff9260bfda4f60
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/20221209190727.759804-4-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'lib/mpi/mpi-mod.c')
0 files changed, 0 insertions, 0 deletions
