From 1811e82767dcc6ebfdb2a57877f1756f067990b8 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Mon, 13 Mar 2023 13:48:23 -0700 Subject: perf lock contention: Track and show siglock with address Likewise, we can display siglock by following the pointer like current->sighand->siglock. $ sudo ./perf lock con -abl -- sleep 1 contended total wait max wait avg wait address symbol 16 2.18 ms 305.35 us 136.34 us ffffffff92e06080 tasklist_lock 28 521.78 us 31.16 us 18.63 us ffff8cc703783ec4 7 119.03 us 23.55 us 17.00 us ffff8ccb92479440 15 88.29 us 10.06 us 5.89 us ffff8cd560b5f380 siglock 7 37.67 us 9.16 us 5.38 us ffff8d053daf0c80 5 8.81 us 4.92 us 1.76 us ffff8d053d6b0c80 Signed-off-by: Namhyung Kim Cc: Boqun Feng Cc: Hao Luo Cc: Ingo Molnar Cc: Jiri Olsa Cc: Juri Lelli Cc: Peter Zijlstra Cc: Song Liu Cc: Stephane Eranian Cc: Waiman Long Cc: Will Deacon Cc: bpf@vger.kernel.org Link: https://lore.kernel.org/r/20230313204825.2665483-2-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-lock.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'tools/perf/builtin-lock.c') diff --git a/tools/perf/builtin-lock.c b/tools/perf/builtin-lock.c index 1b0dc946fe85..28fa0d0dc276 100644 --- a/tools/perf/builtin-lock.c +++ b/tools/perf/builtin-lock.c @@ -1662,8 +1662,7 @@ static void print_contention_result(struct lock_contention *con) pid, pid == -1 ? "Unknown" : thread__comm_str(t)); break; case LOCK_AGGR_ADDR: - pr_info(" %016llx %s\n", (unsigned long long)st->addr, - (st->flags & LCD_F_MMAP_LOCK) ? "mmap_lock" : st->name); + pr_info(" %016llx %s\n", (unsigned long long)st->addr, st->name); break; default: break; -- cgit v1.2.3