diff --git a/aidl/gui/android/view/LayerMetadataKey.aidl b/aidl/gui/android/view/LayerMetadataKey.aidl
index 491c629..a1d8ce5 100644
--- a/aidl/gui/android/view/LayerMetadataKey.aidl
+++ b/aidl/gui/android/view/LayerMetadataKey.aidl
@@ -25,4 +25,5 @@
     METADATA_MOUSE_CURSOR = 4,
     METADATA_ACCESSIBILITY_ID = 5,
     METADATA_OWNER_PID = 6,
+    METADATA_DEQUEUE_TIME = 7,
 }
diff --git a/libs/gui/BLASTBufferQueue.cpp b/libs/gui/BLASTBufferQueue.cpp
index eaa47f9..f4b5a26 100644
--- a/libs/gui/BLASTBufferQueue.cpp
+++ b/libs/gui/BLASTBufferQueue.cpp
@@ -354,6 +354,16 @@
         t->setAutoRefresh(mSurfaceControl, bufferItem.mAutoRefresh);
         mAutoRefresh = bufferItem.mAutoRefresh;
     }
+    {
+        std::unique_lock _lock{mTimestampMutex};
+        auto dequeueTime = mDequeueTimestamps.find(buffer->getId());
+        if (dequeueTime != mDequeueTimestamps.end()) {
+            Parcel p;
+            p.writeInt64(dequeueTime->second);
+            t->setMetadata(mSurfaceControl, METADATA_DEQUEUE_TIME, p);
+            mDequeueTimestamps.erase(dequeueTime);
+        }
+    }
 
     auto mergeTransaction =
             [&t, currentFrameNumber = bufferItem.mFrameNumber](
@@ -412,6 +422,16 @@
     // Do nothing since we are not storing unacquired buffer items locally.
 }
 
+void BLASTBufferQueue::onFrameDequeued(const uint64_t bufferId) {
+    std::unique_lock _lock{mTimestampMutex};
+    mDequeueTimestamps[bufferId] = systemTime();
+};
+
+void BLASTBufferQueue::onFrameCancelled(const uint64_t bufferId) {
+    std::unique_lock _lock{mTimestampMutex};
+    mDequeueTimestamps.erase(bufferId);
+};
+
 void BLASTBufferQueue::setNextTransaction(SurfaceComposerClient::Transaction* t) {
     std::lock_guard _lock{mMutex};
     mNextTransaction = t;
diff --git a/libs/gui/LayerMetadata.cpp b/libs/gui/LayerMetadata.cpp
index 30c9b37..634d8b7 100644
--- a/libs/gui/LayerMetadata.cpp
+++ b/libs/gui/LayerMetadata.cpp
@@ -17,6 +17,7 @@
 #include <android-base/stringprintf.h>
 #include <binder/Parcel.h>
 #include <gui/LayerMetadata.h>
+#include <inttypes.h>
 
 #include "android/view/LayerMetadataKey.h"
 
@@ -113,6 +114,15 @@
     memcpy(data.data(), p.data(), p.dataSize());
 }
 
+std::optional<int64_t> LayerMetadata::getInt64(uint32_t key) const {
+    if (!has(key)) return std::nullopt;
+    const std::vector<uint8_t>& data = mMap.at(key);
+    if (data.size() < sizeof(int64_t)) return std::nullopt;
+    Parcel p;
+    p.setData(data.data(), data.size());
+    return p.readInt64();
+}
+
 std::string LayerMetadata::itemToString(uint32_t key, const char* separator) const {
     if (!has(key)) return std::string();
     switch (static_cast<view::LayerMetadataKey>(key)) {
@@ -124,6 +134,8 @@
             return StringPrintf("taskId%s%d", separator, getInt32(key, 0));
         case view::LayerMetadataKey::METADATA_OWNER_PID:
             return StringPrintf("ownerPID%s%d", separator, getInt32(key, 0));
+        case view::LayerMetadataKey::METADATA_DEQUEUE_TIME:
+            return StringPrintf("dequeueTime%s%" PRId64, separator, *getInt64(key));
         default:
             return StringPrintf("%d%s%dbytes", key, separator,
                                 static_cast<int>(mMap.at(key).size()));
diff --git a/libs/gui/include/gui/BLASTBufferQueue.h b/libs/gui/include/gui/BLASTBufferQueue.h
index 1198135..0fbcbdc 100644
--- a/libs/gui/include/gui/BLASTBufferQueue.h
+++ b/libs/gui/include/gui/BLASTBufferQueue.h
@@ -78,6 +78,8 @@
     void onBufferFreed(const wp<GraphicBuffer>&/* graphicBuffer*/) override { /* TODO */ }
     void onFrameReplaced(const BufferItem& item) override;
     void onFrameAvailable(const BufferItem& item) override;
+    void onFrameDequeued(const uint64_t) override;
+    void onFrameCancelled(const uint64_t) override;
 
     void transactionCallback(nsecs_t latchTime, const sp<Fence>& presentFence,
             const std::vector<SurfaceControlStats>& stats);
@@ -168,7 +170,15 @@
 
     // Queues up transactions using this token in SurfaceFlinger. This prevents queued up
     // transactions from other parts of the client from blocking this transaction.
-    const sp<IBinder> mApplyToken = new BBinder();
+    const sp<IBinder> mApplyToken GUARDED_BY(mMutex) = new BBinder();
+
+    // Guards access to mDequeueTimestamps since we cannot hold to mMutex in onFrameDequeued or
+    // we will deadlock.
+    std::mutex mTimestampMutex;
+    // Tracks buffer dequeue times by the client. This info is sent to SurfaceFlinger which uses
+    // it for debugging purposes.
+    std::unordered_map<uint64_t /* bufferId */, nsecs_t> mDequeueTimestamps
+            GUARDED_BY(mTimestampMutex);
 };
 
 } // namespace android
diff --git a/libs/gui/include/gui/LayerMetadata.h b/libs/gui/include/gui/LayerMetadata.h
index ac48aef..41982c2 100644
--- a/libs/gui/include/gui/LayerMetadata.h
+++ b/libs/gui/include/gui/LayerMetadata.h
@@ -29,6 +29,7 @@
     METADATA_MOUSE_CURSOR = 4,
     METADATA_ACCESSIBILITY_ID = 5,
     METADATA_OWNER_PID = 6,
+    METADATA_DEQUEUE_TIME = 7
 };
 
 struct LayerMetadata : public Parcelable {
@@ -51,6 +52,8 @@
     bool has(uint32_t key) const;
     int32_t getInt32(uint32_t key, int32_t fallback) const;
     void setInt32(uint32_t key, int32_t value);
+    std::optional<int64_t> getInt64(uint32_t key) const;
+    void setInt64(uint32_t key, int64_t value);
 
     std::string itemToString(uint32_t key, const char* separator) const;
 };
diff --git a/services/surfaceflinger/BufferStateLayer.cpp b/services/surfaceflinger/BufferStateLayer.cpp
index bca1c69..a431028 100644
--- a/services/surfaceflinger/BufferStateLayer.cpp
+++ b/services/surfaceflinger/BufferStateLayer.cpp
@@ -343,7 +343,8 @@
 
 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) {
+                                 const client_cache_t& clientCacheId, uint64_t frameNumber,
+                                 std::optional<nsecs_t> /* dequeueTime */) {
     ATRACE_CALL();
 
     if (mCurrentState.buffer) {
diff --git a/services/surfaceflinger/BufferStateLayer.h b/services/surfaceflinger/BufferStateLayer.h
index 6414e6b..1098606 100644
--- a/services/surfaceflinger/BufferStateLayer.h
+++ b/services/surfaceflinger/BufferStateLayer.h
@@ -71,7 +71,8 @@
     bool setFrame(const Rect& frame) override;
     bool 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) override;
+                   const client_cache_t& clientCacheId, uint64_t frameNumber,
+                   std::optional<nsecs_t> dequeueTime) override;
     bool setAcquireFence(const sp<Fence>& fence) override;
     bool setDataspace(ui::Dataspace dataspace) override;
     bool setHdrMetadata(const HdrMetadata& hdrMetadata) override;
diff --git a/services/surfaceflinger/Layer.h b/services/surfaceflinger/Layer.h
index d6023b6..f78b5f3 100644
--- a/services/surfaceflinger/Layer.h
+++ b/services/surfaceflinger/Layer.h
@@ -446,7 +446,7 @@
     virtual bool 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 */) {
+                           uint64_t /* frameNumber */, std::optional<nsecs_t> /* dequeueTime */) {
         return false;
     };
     virtual bool setAcquireFence(const sp<Fence>& /*fence*/) { return false; };
diff --git a/services/surfaceflinger/RefreshRateOverlay.cpp b/services/surfaceflinger/RefreshRateOverlay.cpp
index 6a511a8..32110e9 100644
--- a/services/surfaceflinger/RefreshRateOverlay.cpp
+++ b/services/surfaceflinger/RefreshRateOverlay.cpp
@@ -237,7 +237,8 @@
     mCurrentFps = refreshRate.getFps().getIntValue();
     auto buffer = getOrCreateBuffers(*mCurrentFps)[mFrame];
     mLayer->setBuffer(buffer, Fence::NO_FENCE, 0, 0, true, {},
-                      mLayer->getHeadFrameNumber(-1 /* expectedPresentTime */));
+                      mLayer->getHeadFrameNumber(-1 /* expectedPresentTime */),
+                      std::nullopt /* dequeueTime */);
 
     mFlinger.mTransactionFlags.fetch_or(eTransactionMask);
 }
@@ -249,7 +250,8 @@
     mFrame = (mFrame + 1) % buffers.size();
     auto buffer = buffers[mFrame];
     mLayer->setBuffer(buffer, Fence::NO_FENCE, 0, 0, true, {},
-                      mLayer->getHeadFrameNumber(-1 /* expectedPresentTime */));
+                      mLayer->getHeadFrameNumber(-1 /* expectedPresentTime */),
+                      std::nullopt /* dequeueTime */);
 
     mFlinger.mTransactionFlags.fetch_or(eTransactionMask);
 }
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index 6967f69..6938d5d 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -3840,7 +3840,9 @@
             ALOGE("Attempt to update InputWindowInfo without permission ACCESS_SURFACE_FLINGER");
         }
     }
+    std::optional<nsecs_t> dequeueBufferTimestamp;
     if (what & layer_state_t::eMetadataChanged) {
+        dequeueBufferTimestamp = s.metadata.getInt64(METADATA_DEQUEUE_TIME);
         if (layer->setMetadata(s.metadata)) flags |= eTraversalNeeded;
     }
     if (what & layer_state_t::eColorSpaceAgnosticChanged) {
@@ -3928,7 +3930,7 @@
                 : layer->getHeadFrameNumber(-1 /* expectedPresentTime */) + 1;
 
         if (layer->setBuffer(buffer, s.acquireFence, postTime, desiredPresentTime, isAutoTimestamp,
-                             s.cachedBuffer, frameNumber)) {
+                             s.cachedBuffer, frameNumber, dequeueBufferTimestamp)) {
             flags |= eTraversalNeeded;
         }
     }