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author | Namhyung Kim <namhyung@kernel.org> | 2023-09-06 20:49:01 +0300 |
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committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2023-09-12 23:32:00 +0300 |
commit | 4d1792d0a2564caf1620a2cc9aa6f12284b3a56f (patch) | |
tree | fae459f029f42821fcfd0e3d63e0c340466d433a /certs/blacklist_hashes.c | |
parent | d0c502e46e9796b19e3b0fd28750cb5b679f7c4b (diff) | |
download | linux-4d1792d0a2564caf1620a2cc9aa6f12284b3a56f.tar.xz |
perf lock contention: Add --lock-cgroup option
The --lock-cgroup option shows lock contention stats break down by
cgroups.
Add LOCK_AGGR_CGROUP mode and use it instead of use_cgroup field.
$ sudo ./perf lock con -ab --lock-cgroup sleep 1
contended total wait max wait avg wait cgroup
8 15.70 us 6.34 us 1.96 us /
2 1.48 us 747 ns 738 ns /user.slice/.../app.slice/app-gnome-google\x2dchrome-6442.scope
1 848 ns 848 ns 848 ns /user.slice/.../session.slice/org.gnome.Shell@x11.service
1 220 ns 220 ns 220 ns /user.slice/.../session.slice/pipewire-pulse.service
For now, the cgroup mode only works with BPF (-b).
Committer notes:
Remove -g as it is used in the other tools with a clear meaning of
collect/show callchains. As agreed with Namhyung off list.
Reviewed-by: Ian Rogers <irogers@google.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Hao Luo <haoluo@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/20230906174903.346486-4-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'certs/blacklist_hashes.c')
0 files changed, 0 insertions, 0 deletions