Set the 'latch_unsignaled' property for msm8x09 devices.android-9.0.0_r47android-9.0.0_r46android-9.0.0_r45android-9.0.0_r44android-9.0.0_r43android-9.0.0_r42android-9.0.0_r41android-9.0.0_r40android-9.0.0_r39android-9.0.0_r38android-9.0.0_r37android-9.0.0_r36android-9.0.0_r35android-9.0.0_r34android-9.0.0_r33android-9.0.0_r32android-9.0.0_r31android-9.0.0_r30android-9.0.0_r22android-9.0.0_r21android-9.0.0_r20android-9.0.0_r19android-9.0.0_r16android-9.0.0_r12android-9.0.0_r11pie-qpr3-s1-releasepie-qpr3-releasepie-qpr3-b-releasepie-qpr2-releasepie-qpr1-s3-releasepie-qpr1-s2-releasepie-qpr1-s1-releasepie-qpr1-releasepie-dr1-releasepie-dr1-devpie-devpie-b4s4-releasepie-b4s4-dev

Without this change we sometimes skip the execution of SurfaceFlinger
for one frame, which increases latency and often leads to jank.

This is one of several jank improvements suggested by Qualcomm.

Bug: 68943050
Change-Id: I3db1519f8cab496454d900b18f0fa1629c33605c

1 files changed, 2 insertions, 1 deletions

diff --git a/msm8x09.mk b/msm8x09.mk
index c3d9d98..91a04ca 100644
--- a/msm8x09.mk
+++ b/msm8x09.mk
@@ -17,4 +17,5 @@ PRODUCT_PROPERTY_OVERRIDES += \
   debug.composition.type=dyn \
   debug.hwc.dynThreshold=4.5 \
   debug.sf.hwc.canUseABC=1 \
-  debug.sf.disable_backpressure=1
+  debug.sf.disable_backpressure=1 \
+  debug.sf.latch_unsignaled=1 \