Commit c97f4736 authored Jan 14, 2016 by Peter Zijlstra Committed by Ingo Molnar Jan 21, 2016

perf: Add more assertions



Try to trigger warnings before races do damage.

Signed-off-by: Peter 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: Ingo Molnar <mingo@kernel.org>

parent fae3fde6

kernel/events/core.c

+9 −0

Original line number	Original line	Diff line number	Diff line
	@@ -263,6 +263,15 @@ static void event_function_call(struct perf_event event, event_f func, void da
	.data = data,		.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) {		if (!task) {
	cpu_function_call(event->cpu, event_function, &efs);		cpu_function_call(event->cpu, event_function, &efs);
	return;		return;