commit c5da271eec001da9e11a2786f2618a45257439c3
author Dan Stoza <stoza@google.com> Wed Jul 20 15:38:12 2016 -0700
committer Steve Pfetsch <spfetsch@google.com> Wed Jul 20 19:19:42 2016 -0700
tree 223acc4d11040d2e5db1983477c8f5d49ae65f5e
parent 90093ba0191066d68b218fe344835c03db96cfa6

HWC2: Add properties to revert latching changes

Adds two properties:

debug.sf.latch_unsignaled - This causes SurfaceFlinger to latch
  buffers even if their fences haven't signaled
debug.sf.disable_backpressure - This causes SurfaceFlinger to skip
  propagating backpressure back to apps by not running when it
  detects that a prior composition missed hardware vsync

Bug: 30216498
Change-Id: Idd70f472ec567a4bc03352f30f201f434cf5d660

services/surfaceflinger/SurfaceFlinger.h

diff --git a/services/surfaceflinger/SurfaceFlinger.h b/services/surfaceflinger/SurfaceFlinger.h
index f063aaf..ad2e895 100644
--- a/services/surfaceflinger/SurfaceFlinger.h
+++ b/services/surfaceflinger/SurfaceFlinger.h
@@ -507,6 +507,9 @@
     bool mBootFinished;
     bool mForceFullDamage;
     FenceTracker mFenceTracker;
+#ifdef USE_HWC2
+    bool mPropagateBackpressure = true;
+#endif
 
     // these are thread safe
     mutable MessageQueue mEventQueue;