diff options
Diffstat (limited to 'kernel/events')
| -rw-r--r-- | kernel/events/core.c | 19 |
1 files changed, 8 insertions, 11 deletions
diff --git a/kernel/events/core.c b/kernel/events/core.c index 6ee1febdf6ff..02c8421f8c01 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c | |||
| @@ -903,17 +903,14 @@ list_update_cgroup_event(struct perf_event *event, | |||
| 903 | */ | 903 | */ |
| 904 | cpuctx = __get_cpu_context(ctx); | 904 | cpuctx = __get_cpu_context(ctx); |
| 905 | 905 | ||
| 906 | /* Only set/clear cpuctx->cgrp if current task uses event->cgrp. */ | 906 | /* |
| 907 | if (perf_cgroup_from_task(current, ctx) != event->cgrp) { | 907 | * cpuctx->cgrp is NULL until a cgroup event is sched in or |
| 908 | /* | 908 | * ctx->nr_cgroup == 0 . |
| 909 | * We are removing the last cpu event in this context. | 909 | */ |
| 910 | * If that event is not active in this cpu, cpuctx->cgrp | 910 | if (add && perf_cgroup_from_task(current, ctx) == event->cgrp) |
| 911 | * should've been cleared by perf_cgroup_switch. | 911 | cpuctx->cgrp = event->cgrp; |
| 912 | */ | 912 | else if (!add) |
| 913 | WARN_ON_ONCE(!add && cpuctx->cgrp); | 913 | cpuctx->cgrp = NULL; |
| 914 | return; | ||
| 915 | } | ||
| 916 | cpuctx->cgrp = add ? event->cgrp : NULL; | ||
| 917 | } | 914 | } |
| 918 | 915 | ||
| 919 | #else /* !CONFIG_CGROUP_PERF */ | 916 | #else /* !CONFIG_CGROUP_PERF */ |