commit 3e68cce46450bc156ed9ded9e3b0db0d58fdb87c
author Matt Buckley <mattbuckley@google.com> Fri Aug 05 06:51:43 2022 +0000
committer Matt Buckley <mattbuckley@google.com> Wed Aug 10 21:29:16 2022 +0000
tree 9f82095290be303eb847aab082bfbaa1aac24867
parent 1cf6d7f4cacfed91900c1af5d1a2872ae04dc8ff

Fix SF hint sessions for virtual multi-display case

Currently timing for hint sessions in SurfaceFlinger do not work for
multi-display case with virtual displays (eg: Android Auto). This
patch fixes that by tracking true sf present completion time to
supplement hwc time tracking in the sf main thread deadline case.

Bug: b/241465879

Test: manual

Change-Id: I169dd4f4afd2223ed0a648440d5f59dc19dc07f6
(cherry picked from commit 1809d90ed310216a4d0d8da38b63ecd17d8d6ed2)

services/surfaceflinger/SurfaceFlinger.cpp

diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index 8621d31..240991c 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -2242,7 +2242,8 @@
 
     // Send a power hint hint after presentation is finished
     if (mPowerHintSessionEnabled) {
-        mPowerAdvisor->setPresentFenceTime(mPreviousPresentFences[0].fenceTime->getSignalTime());
+        mPowerAdvisor->setSfPresentTiming(mPreviousPresentFences[0].fenceTime->getSignalTime(),
+                                          systemTime());
         if (mPowerHintSessionMode.late) {
             mPowerAdvisor->sendActualWorkDuration();
         }