diff --git a/services/surfaceflinger/DispSync.h b/services/surfaceflinger/DispSync.h
index a8524b9..537c81b 100644
--- a/services/surfaceflinger/DispSync.h
+++ b/services/surfaceflinger/DispSync.h
@@ -26,11 +26,8 @@
 namespace android {
 
 // Ignore present (retire) fences if the device doesn't have support for the
-// sync framework, or if all phase offsets are zero.  The latter is useful
-// because it allows us to avoid resync bursts on devices that don't need
-// phase-offset VSYNC events.
-#if defined(RUNNING_WITHOUT_SYNC_FRAMEWORK) || \
-        (VSYNC_EVENT_PHASE_OFFSET_NS == 0 && SF_VSYNC_EVENT_PHASE_OFFSET_NS == 0)
+// sync framework
+#if defined(RUNNING_WITHOUT_SYNC_FRAMEWORK)
 static const bool kIgnorePresentFences = true;
 #else
 static const bool kIgnorePresentFences = false;
@@ -64,7 +61,7 @@
         virtual void onDispSyncEvent(nsecs_t when) = 0;
     };
 
-    DispSync();
+    DispSync(const char* name);
     ~DispSync();
 
     // reset clears the resync samples and error value.
@@ -114,7 +111,8 @@
     // given phase offset from the hardware vsync events.  The callback is
     // called from a separate thread and it should return reasonably quickly
     // (i.e. within a few hundred microseconds).
-    status_t addEventListener(nsecs_t phase, const sp<Callback>& callback);
+    status_t addEventListener(const char* name, nsecs_t phase,
+            const sp<Callback>& callback);
 
     // removeEventListener removes an already-registered event callback.  Once
     // this method returns that callback will no longer be called by the
@@ -137,10 +135,12 @@
     void resetErrorLocked();
 
     enum { MAX_RESYNC_SAMPLES = 32 };
-    enum { MIN_RESYNC_SAMPLES_FOR_UPDATE = 3 };
+    enum { MIN_RESYNC_SAMPLES_FOR_UPDATE = 6 };
     enum { NUM_PRESENT_SAMPLES = 8 };
     enum { MAX_RESYNC_SAMPLES_WITHOUT_PRESENT = 4 };
 
+    const char* const mName;
+
     // mPeriod is the computed period of the modeled vsync events in
     // nanoseconds.
     nsecs_t mPeriod;