diff options
| author | Chengming Zhou <zhouchengming@bytedance.com> | 2022-03-29 23:45:21 +0800 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2022-04-05 09:59:45 +0200 |
| commit | 6875186aea5ce09a644758d9193265da1cc187c7 (patch) | |
| tree | bc6a606f28579611141894f400bfb420c4bfa90c /kernel | |
| parent | a0827713e298d021d3c79ae7423aea408f3f7c3a (diff) | |
| download | linux-6875186aea5ce09a644758d9193265da1cc187c7.tar.bz2 | |
perf/core: Use perf_cgroup_info->active to check if cgroup is active
Since we use perf_cgroup_set_timestamp() to start cgroup time and
set active to 1, then use update_cgrp_time_from_cpuctx() to stop
cgroup time and set active to 0.
We can use info->active directly to check if cgroup is active.
Signed-off-by: Chengming Zhou <zhouchengming@bytedance.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20220329154523.86438-3-zhouchengming@bytedance.com
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/events/core.c | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/kernel/events/core.c b/kernel/events/core.c index 65450200691c..a08fb92b3934 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -780,7 +780,6 @@ static inline void update_cgrp_time_from_cpuctx(struct perf_cpu_context *cpuctx, static inline void update_cgrp_time_from_event(struct perf_event *event) { struct perf_cgroup_info *info; - struct perf_cgroup *cgrp; /* * ensure we access cgroup data only when needed and @@ -789,14 +788,12 @@ static inline void update_cgrp_time_from_event(struct perf_event *event) if (!is_cgroup_event(event)) return; - cgrp = perf_cgroup_from_task(current, event->ctx); + info = this_cpu_ptr(event->cgrp->info); /* * Do not update time when cgroup is not active */ - if (cgroup_is_descendant(cgrp->css.cgroup, event->cgrp->css.cgroup)) { - info = this_cpu_ptr(event->cgrp->info); + if (info->active) __update_cgrp_time(info, perf_clock(), true); - } } static inline void |