Commit b06a8301 authored Jan 22, 2009 by Steven Rostedt Committed by Ingo Molnar Jan 23, 2009

trace: fix logic to start/stop counting



The logic in the tracing_start/stop code prevents the WARN_ON
from ever detecting if a start/stop pair was mismatched.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

parent 94523e81

kernel/trace/trace.c

+6 −7

Original line number	Diff line number	Diff line
		@@ -610,13 +610,12 @@ void tracing_start(void)
		return;

		spin_lock_irqsave(&tracing_start_lock, flags);
		if (--trace_stop_count)
		goto out;

		if (--trace_stop_count) {
		if (trace_stop_count < 0) {
		/* Someone screwed up their debugging */
		WARN_ON_ONCE(1);
		trace_stop_count = 0;
		}
		goto out;
		}