提交 c97f4736 编写于 作者: P Peter Zijlstra 提交者: Ingo Molnar

perf: Add more assertions

Try to trigger warnings before races do damage.
Signed-off-by: NPeter Zijlstra (Intel) <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Signed-off-by: NIngo Molnar <mingo@kernel.org>
上级 fae3fde6
......@@ -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;
......
Markdown is supported
0% .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑!
想要评论请 注册