commit 1809d90ed310216a4d0d8da38b63ecd17d8d6ed2
author Matt Buckley <mattbuckley@google.com> Fri Aug 05 06:51:43 2022 +0000
committer Matt Buckley <mattbuckley@google.com> Wed Aug 10 18:25:15 2022 +0000
tree b53f46e791b13411d774c5c1467b9ec175295b6c
parent 0064fad20939b03a0e0c29c56cf664baa96656e0

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

services/surfaceflinger/SurfaceFlinger.cpp

diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index de12d62..499eb4c 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -2235,7 +2235,8 @@
 
     // 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();
         }