1 files changed, 18 insertions, 2 deletions

diff --git a/kernel/perf_event.c b/kernel/perf_event.c
index 5a69abb05ac3..74c60021cdbc 100644
--- a/kernel/perf_event.c
+++ b/kernel/perf_event.c
@@ -1493,6 +1493,22 @@ do {					\
         return div64_u64(dividend, divisor);
 }
 
+static void perf_event_stop(struct perf_event *event)
+{
+        if (!event->pmu->stop)
+                return event->pmu->disable(event);
+
+        return event->pmu->stop(event);
+}
+
+static int perf_event_start(struct perf_event *event)
+{
+        if (!event->pmu->start)
+                return event->pmu->enable(event);
+
+        return event->pmu->start(event);
+}
+
 static void perf_adjust_period(struct perf_event *event, u64 nsec, u64 count)
 {
         struct hw_perf_event *hwc = &event->hw;
@@ -1513,9 +1529,9 @@ static void perf_adjust_period(struct perf_event *event, u64 nsec, u64 count)
 
         if (atomic64_read(&hwc->period_left) > 8*sample_period) {
                 perf_disable();
-                event->pmu->disable(event);
+                perf_event_stop(event);
                 atomic64_set(&hwc->period_left, 0);
-                event->pmu->enable(event);
+                perf_event_start(event);
                 perf_enable();
         }
 }