diff options
| author | Namhyung Kim <namhyung@kernel.org> | 2023-03-13 23:48:23 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2023-03-14 14:33:20 +0300 |
| commit | 1811e82767dcc6ebfdb2a57877f1756f067990b8 (patch) | |
| tree | 5906a2a68862c701a08ab0ab4a36c56403667da0 /tools/perf/builtin-lock.c | |
| parent | 3ace2435bb93445e7713d69336011c46558a18af (diff) | |
| download | linux-1811e82767dcc6ebfdb2a57877f1756f067990b8.tar.xz | |
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 <namhyung@kernel.org>
Cc: Boqun Feng <boqun.feng@gmail.com>
Cc: Hao Luo <haoluo@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Juri Lelli <juri.lelli@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Song Liu <song@kernel.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Waiman Long <longman@redhat.com>
Cc: Will Deacon <will@kernel.org>
Cc: bpf@vger.kernel.org
Link: https://lore.kernel.org/r/20230313204825.2665483-2-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/builtin-lock.c')
| -rw-r--r-- | tools/perf/builtin-lock.c | 3 |
1 files changed, 1 insertions, 2 deletions
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; |