diff --git a/services/surfaceflinger/BufferStateLayer.cpp b/services/surfaceflinger/BufferStateLayer.cpp
index e470eb9..076c707 100644
--- a/services/surfaceflinger/BufferStateLayer.cpp
+++ b/services/surfaceflinger/BufferStateLayer.cpp
@@ -35,6 +35,7 @@
 #include <renderengine/Image.h>
 
 #include "EffectLayer.h"
+#include "FrameTracer/FrameTracer.h"
 #include "TimeStats/TimeStats.h"
 
 namespace android {
@@ -337,7 +338,7 @@
 bool BufferStateLayer::setBuffer(const sp<GraphicBuffer>& buffer, const sp<Fence>& acquireFence,
                                  nsecs_t postTime, nsecs_t desiredPresentTime, bool isAutoTimestamp,
                                  const client_cache_t& clientCacheId, uint64_t frameNumber,
-                                 std::optional<nsecs_t> /* dequeueTime */,
+                                 std::optional<nsecs_t> dequeueTime,
                                  const FrameTimelineInfo& info) {
     ATRACE_CALL();
 
@@ -377,6 +378,14 @@
         setFrameTimelineVsyncForBufferTransaction(info, postTime);
     }
 
+    if (dequeueTime && *dequeueTime != 0) {
+        const uint64_t bufferId = buffer->getId();
+        mFlinger->mFrameTracer->traceNewLayer(layerId, getName().c_str());
+        mFlinger->mFrameTracer->traceTimestamp(layerId, bufferId, frameNumber, *dequeueTime,
+                                               FrameTracer::FrameEvent::DEQUEUE);
+        mFlinger->mFrameTracer->traceTimestamp(layerId, bufferId, frameNumber, postTime,
+                                               FrameTracer::FrameEvent::QUEUE);
+    }
     return true;
 }
 
@@ -628,9 +637,16 @@
     }
 
     const int32_t layerId = getSequence();
-    mFlinger->mTimeStats->setAcquireFence(layerId, mDrawingState.frameNumber,
-                                          std::make_shared<FenceTime>(mDrawingState.acquireFence));
-    mFlinger->mTimeStats->setLatchTime(layerId, mDrawingState.frameNumber, latchTime);
+    const uint64_t bufferId = mDrawingState.buffer->getId();
+    const uint64_t frameNumber = mDrawingState.frameNumber;
+    const auto acquireFence = std::make_shared<FenceTime>(mDrawingState.acquireFence);
+    mFlinger->mTimeStats->setAcquireFence(layerId, frameNumber, acquireFence);
+    mFlinger->mTimeStats->setLatchTime(layerId, frameNumber, latchTime);
+
+    mFlinger->mFrameTracer->traceFence(layerId, bufferId, frameNumber, acquireFence,
+                                       FrameTracer::FrameEvent::ACQUIRE_FENCE);
+    mFlinger->mFrameTracer->traceTimestamp(layerId, bufferId, frameNumber, latchTime,
+                                           FrameTracer::FrameEvent::LATCH);
 
     auto& bufferSurfaceFrame = mDrawingState.bufferSurfaceFrameTX;
     if (bufferSurfaceFrame != nullptr &&
diff --git a/services/surfaceflinger/BufferStateLayer.h b/services/surfaceflinger/BufferStateLayer.h
index ea832a2..175a40b 100644
--- a/services/surfaceflinger/BufferStateLayer.h
+++ b/services/surfaceflinger/BufferStateLayer.h
@@ -124,6 +124,7 @@
 
 private:
     friend class SlotGenerationTest;
+    friend class TransactionFrameTracerTest;
     friend class TransactionSurfaceFrameTest;
 
     inline void tracePendingBufferCount();
diff --git a/services/surfaceflinger/Layer.h b/services/surfaceflinger/Layer.h
index 9cd15e8..4c2fd44 100644
--- a/services/surfaceflinger/Layer.h
+++ b/services/surfaceflinger/Layer.h
@@ -1004,6 +1004,7 @@
     friend class TestableSurfaceFlinger;
     friend class RefreshRateSelectionTest;
     friend class SetFrameRateTest;
+    friend class TransactionFrameTracerTest;
     friend class TransactionSurfaceFrameTest;
 
     virtual void setInitialValuesForClone(const sp<Layer>& clonedFrom);
diff --git a/services/surfaceflinger/tests/unittests/Android.bp b/services/surfaceflinger/tests/unittests/Android.bp
index 17928a0..e55821f 100644
--- a/services/surfaceflinger/tests/unittests/Android.bp
+++ b/services/surfaceflinger/tests/unittests/Android.bp
@@ -73,6 +73,7 @@
         "FrameTracerTest.cpp",
         "TimerTest.cpp",
         "TransactionApplicationTest.cpp",
+        "TransactionFrameTracerTest.cpp",
         "TransactionSurfaceFrameTest.cpp",
         "StrongTypingTest.cpp",
         "VSyncDispatchTimerQueueTest.cpp",
diff --git a/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h b/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h
index 3787c43..a94b9bd 100644
--- a/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h
+++ b/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h
@@ -405,6 +405,10 @@
 
     const auto& getCompositorTiming() const { return mFlinger->getBE().mCompositorTiming; }
 
+    mock::FrameTracer* getFrameTracer() const {
+        return static_cast<mock::FrameTracer*>(mFlinger->mFrameTracer.get());
+    }
+
     /* ------------------------------------------------------------------------
      * Read-write access to private data to set up preconditions and assert
      * post-conditions.
diff --git a/services/surfaceflinger/tests/unittests/TransactionFrameTracerTest.cpp b/services/surfaceflinger/tests/unittests/TransactionFrameTracerTest.cpp
new file mode 100644
index 0000000..dbadf75
--- /dev/null
+++ b/services/surfaceflinger/tests/unittests/TransactionFrameTracerTest.cpp
@@ -0,0 +1,153 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#undef LOG_TAG
+#define LOG_TAG "LibSurfaceFlingerUnittests"
+
+#include <gmock/gmock.h>
+#include <gtest/gtest.h>
+#include <gui/SurfaceComposerClient.h>
+#include <log/log.h>
+#include <utils/String8.h>
+
+#include "TestableSurfaceFlinger.h"
+#include "mock/DisplayHardware/MockComposer.h"
+#include "mock/MockEventThread.h"
+#include "mock/MockVsyncController.h"
+
+namespace android {
+
+using testing::_;
+using testing::Mock;
+using testing::Return;
+using FakeHwcDisplayInjector = TestableSurfaceFlinger::FakeHwcDisplayInjector;
+using PresentState = frametimeline::SurfaceFrame::PresentState;
+
+class TransactionFrameTracerTest : public testing::Test {
+public:
+    TransactionFrameTracerTest() {
+        const ::testing::TestInfo* const test_info =
+                ::testing::UnitTest::GetInstance()->current_test_info();
+        ALOGD("**** Setting up for %s.%s\n", test_info->test_case_name(), test_info->name());
+        setupScheduler();
+        setupComposer(0);
+    }
+
+    ~TransactionFrameTracerTest() {
+        const ::testing::TestInfo* const test_info =
+                ::testing::UnitTest::GetInstance()->current_test_info();
+        ALOGD("**** Tearing down after %s.%s\n", test_info->test_case_name(), test_info->name());
+    }
+
+    sp<BufferStateLayer> createBufferStateLayer() {
+        sp<Client> client;
+        LayerCreationArgs args(mFlinger.flinger(), client, "buffer-state-layer", 100, 100, 0,
+                               LayerMetadata());
+        return new BufferStateLayer(args);
+    }
+
+    void commitTransaction(Layer* layer) {
+        layer->pushPendingState();
+        auto c = layer->getCurrentState();
+        if (layer->applyPendingStates(&c)) {
+            layer->commitTransaction(c);
+        }
+    }
+
+    void setupScheduler() {
+        auto eventThread = std::make_unique<mock::EventThread>();
+        auto sfEventThread = std::make_unique<mock::EventThread>();
+
+        EXPECT_CALL(*eventThread, registerDisplayEventConnection(_));
+        EXPECT_CALL(*eventThread, createEventConnection(_, _))
+                .WillOnce(Return(new EventThreadConnection(eventThread.get(), /*callingUid=*/0,
+                                                           ResyncCallback())));
+
+        EXPECT_CALL(*sfEventThread, registerDisplayEventConnection(_));
+        EXPECT_CALL(*sfEventThread, createEventConnection(_, _))
+                .WillOnce(Return(new EventThreadConnection(sfEventThread.get(), /*callingUid=*/0,
+                                                           ResyncCallback())));
+
+        auto vsyncController = std::make_unique<mock::VsyncController>();
+        auto vsyncTracker = std::make_unique<mock::VSyncTracker>();
+
+        EXPECT_CALL(*vsyncTracker, nextAnticipatedVSyncTimeFrom(_)).WillRepeatedly(Return(0));
+        EXPECT_CALL(*vsyncTracker, currentPeriod())
+                .WillRepeatedly(Return(FakeHwcDisplayInjector::DEFAULT_VSYNC_PERIOD));
+        EXPECT_CALL(*vsyncTracker, nextAnticipatedVSyncTimeFrom(_)).WillRepeatedly(Return(0));
+        mFlinger.setupScheduler(std::move(vsyncController), std::move(vsyncTracker),
+                                std::move(eventThread), std::move(sfEventThread));
+    }
+
+    void setupComposer(uint32_t virtualDisplayCount) {
+        mComposer = new Hwc2::mock::Composer();
+        EXPECT_CALL(*mComposer, getMaxVirtualDisplayCount()).WillOnce(Return(virtualDisplayCount));
+        mFlinger.setupComposer(std::unique_ptr<Hwc2::Composer>(mComposer));
+
+        Mock::VerifyAndClear(mComposer);
+    }
+
+    TestableSurfaceFlinger mFlinger;
+    Hwc2::mock::Composer* mComposer = nullptr;
+    FenceToFenceTimeMap fenceFactory;
+    client_cache_t mClientCache;
+
+    void BLASTTransactionSendsFrameTracerEvents() {
+        sp<BufferStateLayer> layer = createBufferStateLayer();
+
+        sp<Fence> fence(new Fence());
+        sp<GraphicBuffer> buffer{new GraphicBuffer(1, 1, HAL_PIXEL_FORMAT_RGBA_8888, 1, 0)};
+        int32_t layerId = layer->getSequence();
+        uint64_t bufferId = buffer->getId();
+        uint64_t frameNumber = 5;
+        nsecs_t dequeueTime = 10;
+        nsecs_t postTime = 20;
+        EXPECT_CALL(*mFlinger.getFrameTracer(), traceNewLayer(layerId, "buffer-state-layer"));
+        EXPECT_CALL(*mFlinger.getFrameTracer(),
+                    traceTimestamp(layerId, bufferId, frameNumber, dequeueTime,
+                                   FrameTracer::FrameEvent::DEQUEUE, /*duration*/ 0));
+        EXPECT_CALL(*mFlinger.getFrameTracer(),
+                    traceTimestamp(layerId, bufferId, frameNumber, postTime,
+                                   FrameTracer::FrameEvent::QUEUE, /*duration*/ 0));
+        layer->setBuffer(buffer, fence, postTime, /*desiredPresentTime*/ 30, false, mClientCache,
+                         frameNumber, dequeueTime, FrameTimelineInfo{});
+
+        commitTransaction(layer.get());
+        bool computeVisisbleRegions;
+        nsecs_t latchTime = 25;
+        EXPECT_CALL(*mFlinger.getFrameTracer(),
+                    traceFence(layerId, bufferId, frameNumber, _,
+                               FrameTracer::FrameEvent::ACQUIRE_FENCE, /*startTime*/ 0));
+        EXPECT_CALL(*mFlinger.getFrameTracer(),
+                    traceTimestamp(layerId, bufferId, frameNumber, latchTime,
+                                   FrameTracer::FrameEvent::LATCH, /*duration*/ 0));
+        layer->updateTexImage(computeVisisbleRegions, latchTime, /*expectedPresentTime*/ 0);
+
+        auto glDoneFence = fenceFactory.createFenceTimeForTest(fence);
+        auto presentFence = fenceFactory.createFenceTimeForTest(fence);
+        CompositorTiming compositorTiming;
+        EXPECT_CALL(*mFlinger.getFrameTracer(),
+                    traceFence(layerId, bufferId, frameNumber, presentFence,
+                               FrameTracer::FrameEvent::PRESENT_FENCE, /*startTime*/ 0));
+        layer->onPostComposition(nullptr, glDoneFence, presentFence, compositorTiming);
+    }
+};
+
+TEST_F(TransactionFrameTracerTest, BLASTTransactionSendsFrameTracerEvents) {
+    BLASTTransactionSendsFrameTracerEvents();
+}
+
+} // namespace android
\ No newline at end of file