diff options
| -rw-r--r-- | kernel/events/core.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/kernel/events/core.c b/kernel/events/core.c index 6620432491f6..3eaf91b104e9 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -263,6 +263,15 @@ static void event_function_call(struct perf_event *event, event_f func, void *da .data = data, }; + if (!event->parent) { + /* + * If this is a !child event, we must hold ctx::mutex to + * stabilize the the event->ctx relation. See + * perf_event_ctx_lock(). + */ + lockdep_assert_held(&ctx->mutex); + } + if (!task) { cpu_function_call(event->cpu, event_function, &efs); return; |