SF: Reconfirm all period changes, ignore HWC
This change includes two separate fixes to make waking up from idle more
robust when using a kernel idle timer:
1) Always reconfirm the refresh rate when we resync to hardware vsync.
This is because if the kernel idle timer is enabled, we may not
immediately be in the refresh rate we expect to be.
2) Ignore the refresh rate reported by the hardware vsync callbacks,
since that refresh rate may not reflect the actual refresh rate
when the kernel idle timer is in effect.
Bug: 154303580
Test: systrace
Test: libsurfaceflinger_unittest
Change-Id: I79c66faeaed262acd9c5925fe2202a9fb3f10b7b
diff --git a/services/surfaceflinger/Scheduler/VSyncReactor.h b/services/surfaceflinger/Scheduler/VSyncReactor.h
index 31ddf5a..265d89c 100644
--- a/services/surfaceflinger/Scheduler/VSyncReactor.h
+++ b/services/surfaceflinger/Scheduler/VSyncReactor.h
@@ -36,7 +36,8 @@
class VSyncReactor : public android::DispSync {
public:
VSyncReactor(std::unique_ptr<Clock> clock, std::unique_ptr<VSyncDispatch> dispatch,
- std::unique_ptr<VSyncTracker> tracker, size_t pendingFenceLimit);
+ std::unique_ptr<VSyncTracker> tracker, size_t pendingFenceLimit,
+ bool supportKernelIdleTimer);
~VSyncReactor();
bool addPresentFence(const std::shared_ptr<FenceTime>& fence) final;
@@ -89,6 +90,7 @@
GUARDED_BY(mMutex);
const std::unique_ptr<PredictedVsyncTracer> mPredictedVsyncTracer;
+ const bool mSupportKernelIdleTimer = false;
};
class SystemClock : public Clock {