diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index 801e8dd..a49e8f4 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -1024,8 +1024,13 @@
 
 // ----------------------------------------------------------------------------
 
-sp<IDisplayEventConnection> SurfaceFlinger::createDisplayEventConnection() {
-    return mEventThread->createEventConnection();
+sp<IDisplayEventConnection> SurfaceFlinger::createDisplayEventConnection(
+        ISurfaceComposer::VsyncSource vsyncSource) {
+    if (vsyncSource == eVsyncSourceSurfaceFlinger) {
+        return mSFEventThread->createEventConnection();
+    } else {
+        return mEventThread->createEventConnection();
+    }
 }
 
 // ----------------------------------------------------------------------------
diff --git a/services/surfaceflinger/SurfaceFlinger.h b/services/surfaceflinger/SurfaceFlinger.h
index 1bc689d..c89e26f 100644
--- a/services/surfaceflinger/SurfaceFlinger.h
+++ b/services/surfaceflinger/SurfaceFlinger.h
@@ -277,7 +277,8 @@
         const sp<IGraphicBufferProducer>& bufferProducer) const;
     virtual status_t getSupportedFrameTimestamps(
             std::vector<FrameEvent>* outSupported) const;
-    virtual sp<IDisplayEventConnection> createDisplayEventConnection();
+    virtual sp<IDisplayEventConnection> createDisplayEventConnection(
+            ISurfaceComposer::VsyncSource vsyncSource = eVsyncSourceApp);
     virtual status_t captureScreen(const sp<IBinder>& display,
             const sp<IGraphicBufferProducer>& producer,
             Rect sourceCrop, uint32_t reqWidth, uint32_t reqHeight,