diff --git a/include/gui/Surface.h b/include/gui/Surface.h
index 8b1d106..e8dc83e 100644
--- a/include/gui/Surface.h
+++ b/include/gui/Surface.h
@@ -160,6 +160,9 @@
 
     status_t getUniqueId(uint64_t* outId) const;
 
+    // Returns the CLOCK_MONOTONIC start time of the last dequeueBuffer call
+    nsecs_t getLastDequeueStartTime() const;
+
 protected:
     virtual ~Surface();
 
@@ -421,6 +424,9 @@
     nsecs_t mLastDequeueDuration = 0;
     nsecs_t mLastQueueDuration = 0;
 
+    // Stores the time right before we call IGBP::dequeueBuffer
+    nsecs_t mLastDequeueStartTime = 0;
+
     Condition mQueueBufferCondition;
 
     uint64_t mNextFrameNumber = 1;