---

yaml --- r: 147446 b: refs/heads/master c: e758a33 h: refs/heads/master v: v3
git-mirror · May 12, 2009 · fe12851 · fe12851
1 parent 0e16560
commit fe12851
Show file tree

Hide file tree

Showing 2 changed files with 13 additions and 8 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 615a3f1e055ac9b0ae74e1f935a12ea2cfe2a2ad
+refs/heads/master: e758a33d6fc5b9d6a3ae489863d04fcecad8120b
diff --git a/trunk/kernel/perf_counter.c b/trunk/kernel/perf_counter.c
@@ -663,6 +663,7 @@ static void __perf_counter_enable(void *info)
 	struct perf_cpu_context *cpuctx = &__get_cpu_var(perf_cpu_context);
 	struct perf_counter_context *ctx = counter->ctx;
 	struct perf_counter *leader = counter->group_leader;
+	unsigned long pmuflags;
 	unsigned long flags;
 	int err;
 
@@ -689,14 +690,18 @@ static void __perf_counter_enable(void *info)
 	if (leader != counter && leader->state != PERF_COUNTER_STATE_ACTIVE)
 		goto unlock;
 
-	if (!group_can_go_on(counter, cpuctx, 1))
+	if (!group_can_go_on(counter, cpuctx, 1)) {
 		err = -EEXIST;
-	else if (counter == leader)
-		err = group_sched_in(counter, cpuctx, ctx,
-				     smp_processor_id());
-	else
-		err = counter_sched_in(counter, cpuctx, ctx,
-				       smp_processor_id());
+	} else {
+		pmuflags = hw_perf_save_disable();
+		if (counter == leader)
+			err = group_sched_in(counter, cpuctx, ctx,
+					     smp_processor_id());
+		else
+			err = counter_sched_in(counter, cpuctx, ctx,
+					       smp_processor_id());
+		hw_perf_restore(pmuflags);
+	}
 
 	if (err) {
 		/*