perf: Honour event state for aux stream data

commit 22e1908 upstream.

Anton reported that perf record kept receiving events even after calling
ioctl(PERF_EVENT_IOC_DISABLE). It turns out that FORK,COMM and MMAP
events didn't respect the disabled state and kept flowing in.

Reported-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Tested-by: Anton Blanchard <anton@samba.org>
LKML-Reference: <1263459187.4244.265.camel@laptop>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

kernel/perf_event.c

@@ -3229,6 +3229,9 @@ static void perf_event_task_output(struct perf_event *event,
 
 static int perf_event_task_match(struct perf_event *event)
 {
+	if (event->state != PERF_EVENT_STATE_ACTIVE)
+		return 0;
+
 	if (event->cpu != -1 && event->cpu != smp_processor_id())
 		return 0;
 
@@ -3344,6 +3347,9 @@ static void perf_event_comm_output(struct perf_event *event,
 
 static int perf_event_comm_match(struct perf_event *event)
 {
+	if (event->state != PERF_EVENT_STATE_ACTIVE)
+		return 0;
+
 	if (event->cpu != -1 && event->cpu != smp_processor_id())
 		return 0;
 
@@ -3471,6 +3477,9 @@ static void perf_event_mmap_output(struct perf_event *event,
 static int perf_event_mmap_match(struct perf_event *event,
 				   struct perf_mmap_event *mmap_event)
 {
+	if (event->state != PERF_EVENT_STATE_ACTIVE)
+		return 0;
+
 	if (event->cpu != -1 && event->cpu != smp_processor_id())
 		return 0;