diff --git a/services/surfaceflinger/BufferLayer.cpp b/services/surfaceflinger/BufferLayer.cpp
index 9d72399..f51fbb4 100644
--- a/services/surfaceflinger/BufferLayer.cpp
+++ b/services/surfaceflinger/BufferLayer.cpp
@@ -19,9 +19,7 @@
 #define LOG_TAG "BufferLayer"
 #define ATRACE_TAG ATRACE_TAG_GRAPHICS
 
-#include <cmath>
-#include <cstdlib>
-#include <mutex>
+#include "BufferLayer.h"
 
 #include <compositionengine/CompositionEngine.h>
 #include <compositionengine/Display.h>
@@ -45,11 +43,14 @@
 #include <utils/StopWatch.h>
 #include <utils/Trace.h>
 
-#include "BufferLayer.h"
+#include <cmath>
+#include <cstdlib>
+#include <mutex>
+#include <sstream>
+
 #include "Colorizer.h"
 #include "DisplayDevice.h"
 #include "LayerRejecter.h"
-
 #include "TimeStats/TimeStats.h"
 
 namespace android {
@@ -525,6 +526,9 @@
             }
 
             if ((*point)->getFrameNumber() <= mCurrentFrameNumber) {
+                std::stringstream ss;
+                ss << "Dropping sync point " << (*point)->getFrameNumber();
+                ATRACE_NAME(ss.str().c_str());
                 point = mLocalSyncPoints.erase(point);
             } else {
                 ++point;
diff --git a/services/surfaceflinger/Layer.cpp b/services/surfaceflinger/Layer.cpp
index 898f3bc..bda7e43 100644
--- a/services/surfaceflinger/Layer.cpp
+++ b/services/surfaceflinger/Layer.cpp
@@ -19,12 +19,7 @@
 #define LOG_TAG "Layer"
 #define ATRACE_TAG ATRACE_TAG_GRAPHICS
 
-#include <math.h>
-#include <stdint.h>
-#include <stdlib.h>
-#include <sys/types.h>
-#include <algorithm>
-#include <mutex>
+#include "Layer.h"
 
 #include <android-base/stringprintf.h>
 #include <compositionengine/Display.h>
@@ -39,7 +34,11 @@
 #include <gui/BufferItem.h>
 #include <gui/LayerDebugInfo.h>
 #include <gui/Surface.h>
+#include <math.h>
 #include <renderengine/RenderEngine.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <sys/types.h>
 #include <ui/DebugUtils.h>
 #include <ui/GraphicBuffer.h>
 #include <ui/PixelFormat.h>
@@ -49,12 +48,15 @@
 #include <utils/StopWatch.h>
 #include <utils/Trace.h>
 
+#include <algorithm>
+#include <mutex>
+#include <sstream>
+
 #include "BufferLayer.h"
 #include "ColorLayer.h"
 #include "Colorizer.h"
 #include "DisplayDevice.h"
 #include "DisplayHardware/HWComposer.h"
-#include "Layer.h"
 #include "LayerProtoHelper.h"
 #include "LayerRejecter.h"
 #include "MonitoredProducer.h"
@@ -677,6 +679,7 @@
     if (!mCurrentState.modified) {
         return;
     }
+    ATRACE_CALL();
 
     // If this transaction is waiting on the receipt of a frame, generate a sync
     // point and send it to the remote layer.
@@ -693,6 +696,9 @@
         } else {
             auto syncPoint = std::make_shared<SyncPoint>(mCurrentState.frameNumber_legacy, this);
             if (barrierLayer->addSyncPoint(syncPoint)) {
+                std::stringstream ss;
+                ss << "Adding sync point " << mCurrentState.frameNumber_legacy;
+                ATRACE_NAME(ss.str().c_str());
                 mRemoteSyncPoints.push_back(std::move(syncPoint));
             } else {
                 // We already missed the frame we're supposed to synchronize
@@ -710,6 +716,7 @@
 }
 
 void Layer::popPendingState(State* stateToCommit) {
+    ATRACE_CALL();
     *stateToCommit = mPendingStates[0];
 
     mPendingStates.removeAt(0);
@@ -741,6 +748,7 @@
             }
 
             if (mRemoteSyncPoints.front()->frameIsAvailable()) {
+                ATRACE_NAME("frameIsAvailable");
                 // Apply the state update
                 popPendingState(stateToCommit);
                 stateUpdateAvailable = true;
@@ -749,6 +757,7 @@
                 mRemoteSyncPoints.front()->setTransactionApplied();
                 mRemoteSyncPoints.pop_front();
             } else {
+                ATRACE_NAME("!frameIsAvailable");
                 break;
             }
         } else {
@@ -1195,6 +1204,7 @@
 }
 
 void Layer::deferTransactionUntil_legacy(const sp<Layer>& barrierLayer, uint64_t frameNumber) {
+    ATRACE_CALL();
     mCurrentState.barrierLayer_legacy = barrierLayer;
     mCurrentState.frameNumber_legacy = frameNumber;
     // We don't set eTransactionNeeded, because just receiving a deferral