diff --git a/services/surfaceflinger/SurfaceFlinger.h b/services/surfaceflinger/SurfaceFlinger.h
index 37110b9..41e42b7 100644
--- a/services/surfaceflinger/SurfaceFlinger.h
+++ b/services/surfaceflinger/SurfaceFlinger.h
@@ -407,8 +407,11 @@
      * VSync
      */
      void enableHardwareVsync();
-     void disableHardwareVsync(bool makeUnavailable);
      void resyncToHardwareVsync(bool makeAvailable);
+     void disableHardwareVsync(bool makeUnavailable);
+public:
+     void resyncWithRateLimit();
+private:
 
     /* ------------------------------------------------------------------------
      * Debugging & dumpsys
@@ -520,7 +523,7 @@
     static const size_t NUM_BUCKETS = 8; // < 1-7, 7+
     nsecs_t mFrameBuckets[NUM_BUCKETS];
     nsecs_t mTotalTime;
-    nsecs_t mLastSwapTime;
+    std::atomic<nsecs_t> mLastSwapTime;
 };
 
 }; // namespace android