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authorNamhyung Kim <[email protected]>2022-12-19 12:17:31 -0800
committerArnaldo Carvalho de Melo <[email protected]>2022-12-21 14:52:39 -0300
commit5e3febe7b7b99f942311ddfa05bb06910d06b14d (patch)
tree58baf1524707635c5f58de9b601e34fc37049c73 /net/unix/af_unix.c
parent511e19b9e2112463c33a744ecb8a798056074408 (diff)
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 <[email protected]> Cc: Adrian Hunter <[email protected]> Cc: Blake Jones <[email protected]> Cc: Ian Rogers <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Song Liu <[email protected]> Cc: [email protected] Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
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