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Commit c57f2c39 authored by Kevin DuBois's avatar Kevin DuBois
Browse files

SF: enable VSyncReactor 

Enable VSyncReactor timing system. This is a vsync timing system
intended to work with VRR, multiple fixed rates, and typical fixed  rate
devices.

System can be disabled with
setprop debug.sf.vsync_reactor 0; stop; start

Test: go/dispsync2-checks
Fixes: 140302863

Change-Id: I46bb8d55604136cc0eb8b249e465d6ae5470c3f3
parent 69298c18

services/surfaceflinger/Scheduler/Scheduler.cpp

+1 −1
Original line number Diff line number Diff line
@@ -64,7 +64,7 @@ namespace android { 


std::unique_ptr<DispSync> createDispSync() {

    // TODO (140302863) remove this and use the vsync_reactor system.

    if (property_get_bool("debug.sf.vsync_reactor", false)) {

    if (property_get_bool("debug.sf.vsync_reactor", true)) {

        // TODO (144707443) tune Predictor tunables.

        static constexpr int default_rate = 60;

        static constexpr auto initial_period =

services/surfaceflinger/Scheduler/VSyncPredictor.cpp

+1 −1
Original line number Diff line number Diff line
@@ -38,7 +38,7 @@ VSyncPredictor::~VSyncPredictor() = default; 


VSyncPredictor::VSyncPredictor(nsecs_t idealPeriod, size_t historySize,

                               size_t minimumSamplesForPrediction, uint32_t outlierTolerancePercent)

      : mTraceOn(property_get_bool("debug.sf.vsp_trace", false)),

      : mTraceOn(property_get_bool("debug.sf.vsp_trace", true)),

        kHistorySize(historySize),

        kMinimumSamplesForPrediction(minimumSamplesForPrediction),

        kOutlierTolerancePercent(std::min(outlierTolerancePercent, kMaxPercent)),