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-rw-r--r--services/surfaceflinger/BufferQueueLayer.cpp2
-rw-r--r--services/surfaceflinger/Scheduler/PhaseOffsets.cpp6
-rw-r--r--services/surfaceflinger/Scheduler/Scheduler.cpp6
-rw-r--r--services/surfaceflinger/Scheduler/Scheduler.h4
-rw-r--r--services/surfaceflinger/SurfaceFlinger.cpp163
-rw-r--r--services/surfaceflinger/SurfaceFlinger.h49
6 files changed, 182 insertions, 48 deletions
diff --git a/services/surfaceflinger/BufferQueueLayer.cpp b/services/surfaceflinger/BufferQueueLayer.cpp
index 39157575e9..0313c326a5 100644
--- a/services/surfaceflinger/BufferQueueLayer.cpp
+++ b/services/surfaceflinger/BufferQueueLayer.cpp
@@ -232,7 +232,7 @@ status_t BufferQueueLayer::updateTexImage(bool& recomputeVisibleRegions, nsecs_t
getTransformToDisplayInverse(), mFreezeGeometryUpdates);
const nsecs_t expectedPresentTime = mFlinger->mUseScheduler
- ? mFlinger->mScheduler->mPrimaryDispSync->expectedPresentTime()
+ ? mFlinger->mScheduler->expectedPresentTime()
: mFlinger->mPrimaryDispSync->expectedPresentTime();
// updateTexImage() below might drop the some buffers at the head of the queue if there is a
diff --git a/services/surfaceflinger/Scheduler/PhaseOffsets.cpp b/services/surfaceflinger/Scheduler/PhaseOffsets.cpp
index a0a4455d43..ab1f460357 100644
--- a/services/surfaceflinger/Scheduler/PhaseOffsets.cpp
+++ b/services/surfaceflinger/Scheduler/PhaseOffsets.cpp
@@ -59,10 +59,10 @@ PhaseOffsets::PhaseOffsets() {
const int highFpsEarlyGlAppOffsetNs = atoi(value);
// TODO(b/122905996): Define these in device.mk.
- property_get("debug.sf.high_fps_late_app_phase_offset_ns", value, "1000000");
+ property_get("debug.sf.high_fps_late_app_phase_offset_ns", value, "2000000");
const int highFpsLateAppOffsetNs = atoi(value);
- property_get("debug.sf.high_fps_late_sf_phase_offset_ns", value, "8000000");
+ property_get("debug.sf.high_fps_late_sf_phase_offset_ns", value, "1000000");
const int highFpsLateSfOffsetNs = atoi(value);
mDefaultRefreshRateOffsets.early = {earlySfOffsetNs != -1 ? earlySfOffsetNs
@@ -83,7 +83,7 @@ PhaseOffsets::PhaseOffsets() {
: highFpsLateAppOffsetNs,
highFpsEarlyGlAppOffsetNs != -1 ? highFpsEarlyGlAppOffsetNs
: highFpsLateSfOffsetNs};
- mHighRefreshRateOffsets.late = {highFpsLateAppOffsetNs, highFpsLateSfOffsetNs};
+ mHighRefreshRateOffsets.late = {highFpsLateSfOffsetNs, highFpsLateAppOffsetNs};
}
PhaseOffsets::Offsets PhaseOffsets::getCurrentOffsets() const {
diff --git a/services/surfaceflinger/Scheduler/Scheduler.cpp b/services/surfaceflinger/Scheduler/Scheduler.cpp
index 2f581d2fcb..5268c8cc7b 100644
--- a/services/surfaceflinger/Scheduler/Scheduler.cpp
+++ b/services/surfaceflinger/Scheduler/Scheduler.cpp
@@ -69,7 +69,7 @@ Scheduler::Scheduler(impl::EventControlThread::SetVSyncEnabledFunction function)
mEventControlThread = std::make_unique<impl::EventControlThread>(function);
char value[PROPERTY_VALUE_MAX];
- property_get("debug.sf.set_idle_timer_ms", value, "30");
+ property_get("debug.sf.set_idle_timer_ms", value, "0");
mSetIdleTimerMs = atoi(value);
if (mSetIdleTimerMs > 0) {
@@ -238,6 +238,10 @@ void Scheduler::makeHWSyncAvailable(bool makeAvailable) {
mHWVsyncAvailable = makeAvailable;
}
+nsecs_t Scheduler::expectedPresentTime() {
+ return mPrimaryDispSync->expectedPresentTime();
+}
+
void Scheduler::addFramePresentTimeForLayer(const nsecs_t framePresentTime, bool isAutoTimestamp,
const std::string layerName) {
// This is V1 logic. It calculates the average FPS based on the timestamp frequency
diff --git a/services/surfaceflinger/Scheduler/Scheduler.h b/services/surfaceflinger/Scheduler/Scheduler.h
index 4abf027c14..089d579b03 100644
--- a/services/surfaceflinger/Scheduler/Scheduler.h
+++ b/services/surfaceflinger/Scheduler/Scheduler.h
@@ -109,6 +109,7 @@ public:
void addPresentFence(const std::shared_ptr<FenceTime>& fenceTime);
void setIgnorePresentFences(bool ignore);
void makeHWSyncAvailable(bool makeAvailable);
+ nsecs_t expectedPresentTime();
// Adds the present time for given layer to the history of present times.
void addFramePresentTimeForLayer(const nsecs_t framePresentTime, bool isAutoTimestamp,
const std::string layerName);
@@ -142,9 +143,6 @@ private:
// Function that is called when the timer expires.
void expiredTimerCallback();
- // TODO(b/113612090): Instead of letting BufferQueueLayer to access mDispSync directly, it
- // should make request to Scheduler to compute next refresh.
- friend class BufferQueueLayer;
// If fences from sync Framework are supported.
const bool mHasSyncFramework;
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index 5f8de830e5..6e21739e53 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -351,10 +351,6 @@ SurfaceFlinger::SurfaceFlinger(surfaceflinger::Factory& factory)
}
ALOGV("Primary Display Orientation is set to %2d.", SurfaceFlinger::primaryDisplayOrientation);
- mPrimaryDispSync =
- getFactory().createDispSync("PrimaryDispSync", SurfaceFlinger::hasSyncFramework,
- SurfaceFlinger::dispSyncPresentTimeOffset);
-
auto surfaceFlingerConfigsServiceV1_2 = V1_2::ISurfaceFlingerConfigs::getService();
if (surfaceFlingerConfigsServiceV1_2) {
surfaceFlingerConfigsServiceV1_2->getDisplayNativePrimaries(
@@ -400,6 +396,12 @@ SurfaceFlinger::SurfaceFlinger(surfaceflinger::Factory& factory)
property_get("debug.sf.use_scheduler", value, "0");
mUseScheduler = atoi(value);
+ if (!mUseScheduler) {
+ mPrimaryDispSync =
+ getFactory().createDispSync("PrimaryDispSync", SurfaceFlinger::hasSyncFramework,
+ SurfaceFlinger::dispSyncPresentTimeOffset);
+ }
+
const auto [early, gl, late] = mPhaseOffsets->getCurrentOffsets();
mVsyncModulator.setPhaseOffsets(early, gl, late);
@@ -719,8 +721,10 @@ void SurfaceFlinger::init() {
}
}
- mEventControlThread = getFactory().createEventControlThread(
- [this](bool enabled) { setPrimaryVsyncEnabled(enabled); });
+ if (!mUseScheduler) {
+ mEventControlThread = getFactory().createEventControlThread(
+ [this](bool enabled) { setPrimaryVsyncEnabled(enabled); });
+ }
// initialize our drawing state
mDrawingState = mCurrentState;
@@ -822,14 +826,12 @@ status_t SurfaceFlinger::getSupportedFrameTimestamps(
return NO_ERROR;
}
-status_t SurfaceFlinger::getDisplayConfigs(const sp<IBinder>& displayToken,
- Vector<DisplayInfo>* configs) {
+status_t SurfaceFlinger::getDisplayConfigsLocked(const sp<IBinder>& displayToken,
+ Vector<DisplayInfo>* configs) {
if (!displayToken || !configs) {
return BAD_VALUE;
}
- ConditionalLock lock(mStateLock, std::this_thread::get_id() != mMainThreadId);
-
const auto displayId = getPhysicalDisplayIdLocked(displayToken);
if (!displayId) {
return NAME_NOT_FOUND;
@@ -957,22 +959,19 @@ int SurfaceFlinger::getActiveConfig(const sp<IBinder>& displayToken) {
return display->getActiveConfig();
}
-status_t SurfaceFlinger::setActiveConfig(const sp<IBinder>& displayToken, int mode) {
- ATRACE_NAME("setActiveConfigSync");
- postMessageSync(new LambdaMessage(
- [&]() NO_THREAD_SAFETY_ANALYSIS { setActiveConfigInternal(displayToken, mode); }));
- return NO_ERROR;
-}
+void SurfaceFlinger::setDesiredActiveConfig(const sp<IBinder>& displayToken, int mode) {
+ ATRACE_CALL();
-void SurfaceFlinger::setActiveConfigInternal(const sp<IBinder>& displayToken, int mode) {
Vector<DisplayInfo> configs;
- getDisplayConfigs(displayToken, &configs);
+ // Lock is acquired by setRefreshRateTo.
+ getDisplayConfigsLocked(displayToken, &configs);
if (mode < 0 || mode >= static_cast<int>(configs.size())) {
ALOGE("Attempt to set active config %d for display with %zu configs", mode, configs.size());
return;
}
- const auto display = getDisplayDevice(displayToken);
+ // Lock is acquired by setRefreshRateTo.
+ const auto display = getDisplayDeviceLocked(displayToken);
if (!display) {
ALOGE("Attempt to set active config %d for invalid display token %p", mode,
displayToken.get());
@@ -988,23 +987,95 @@ void SurfaceFlinger::setActiveConfigInternal(const sp<IBinder>& displayToken, in
return;
}
- int currentMode = display->getActiveConfig();
- if (mode == currentMode) {
- // Don't update config if we are already running in the desired mode.
+ // Don't check against the current mode yet. Worst case we set the desired
+ // config twice.
+ {
+ std::lock_guard<std::mutex> lock(mActiveConfigLock);
+ mDesiredActiveConfig = ActiveConfigInfo{mode, displayToken};
+ }
+ // This will trigger HWC refresh without resetting the idle timer.
+ repaintEverythingForHWC();
+}
+
+status_t SurfaceFlinger::setActiveConfig(const sp<IBinder>& displayToken, int mode) {
+ ATRACE_CALL();
+ postMessageSync(new LambdaMessage(
+ [&]() NO_THREAD_SAFETY_ANALYSIS { setDesiredActiveConfig(displayToken, mode); }));
+ return NO_ERROR;
+}
+
+void SurfaceFlinger::setActiveConfigInHWC() {
+ ATRACE_CALL();
+
+ const auto display = getDisplayDevice(mUpcomingActiveConfig.displayToken);
+ if (!display) {
return;
}
+ const auto displayId = display->getId();
+ LOG_ALWAYS_FATAL_IF(!displayId);
+
+ ATRACE_INT("ActiveConfigModeHWC", mUpcomingActiveConfig.configId);
+ getHwComposer().setActiveConfig(*displayId, mUpcomingActiveConfig.configId);
+ mSetActiveConfigState = SetActiveConfigState::NOTIFIED_HWC;
+ ATRACE_INT("SetActiveConfigState", mSetActiveConfigState);
+}
+
+void SurfaceFlinger::setActiveConfigInternal() {
+ ATRACE_CALL();
+
+ std::lock_guard<std::mutex> lock(mActiveConfigLock);
if (mUseScheduler) {
- mRefreshRateStats->setConfigMode(mode);
+ mRefreshRateStats->setConfigMode(mUpcomingActiveConfig.configId);
}
- const auto displayId = display->getId();
- LOG_ALWAYS_FATAL_IF(!displayId);
+ const auto display = getDisplayDeviceLocked(mUpcomingActiveConfig.displayToken);
+ display->setActiveConfig(mUpcomingActiveConfig.configId);
- display->setActiveConfig(mode);
- getHwComposer().setActiveConfig(*displayId, mode);
+ mSetActiveConfigState = SetActiveConfigState::NONE;
+ ATRACE_INT("SetActiveConfigState", mSetActiveConfigState);
- ATRACE_INT("ActiveConfigMode", mode);
resyncToHardwareVsync(true, getVsyncPeriod());
+ ATRACE_INT("ActiveConfigMode", mUpcomingActiveConfig.configId);
+}
+
+bool SurfaceFlinger::updateSetActiveConfigStateMachine() NO_THREAD_SAFETY_ANALYSIS {
+ // Store the local variable to release the lock.
+ ActiveConfigInfo desiredActiveConfig;
+ {
+ std::lock_guard<std::mutex> lock(mActiveConfigLock);
+ desiredActiveConfig = mDesiredActiveConfig;
+ }
+
+ const auto display = getDisplayDevice(desiredActiveConfig.displayToken);
+ if (display) {
+ if (mSetActiveConfigState == SetActiveConfigState::NONE &&
+ display->getActiveConfig() != desiredActiveConfig.configId) {
+ // Step 1) Desired active config was set, it is different than the
+ // config currently in use. Notify HWC.
+ mUpcomingActiveConfig = desiredActiveConfig;
+ setActiveConfigInHWC();
+ } else if (mSetActiveConfigState == SetActiveConfigState::NOTIFIED_HWC) {
+ // Step 2) HWC was notified and we received refresh from it.
+ mSetActiveConfigState = SetActiveConfigState::REFRESH_RECEIVED;
+ ATRACE_INT("SetActiveConfigState", mSetActiveConfigState);
+ repaintEverythingForHWC();
+ // We do not want to give another frame to HWC while we are transitioning.
+ return false;
+ } else if (mSetActiveConfigState == SetActiveConfigState::REFRESH_RECEIVED &&
+ !(mPreviousPresentFence != Fence::NO_FENCE &&
+ (mPreviousPresentFence->getStatus() == Fence::Status::Unsignaled))) {
+ // Step 3) We received the present fence from the HWC, so we assume it
+ // successfully updated the config, hence we update SF.
+ setActiveConfigInternal();
+ // If the config changed again while we were transitioning, restart the
+ // process.
+ if (desiredActiveConfig != mUpcomingActiveConfig) {
+ mUpcomingActiveConfig = desiredActiveConfig;
+ setActiveConfigInHWC(); // sets the state to NOTIFY_HWC
+ }
+ }
+ }
+ return true;
}
status_t SurfaceFlinger::getDisplayColorModes(const sp<IBinder>& displayToken,
@@ -1332,6 +1403,7 @@ nsecs_t SurfaceFlinger::getVsyncPeriod() const {
}
void SurfaceFlinger::enableHardwareVsync() {
+ assert(!mUseScheduler);
Mutex::Autolock _l(mHWVsyncLock);
if (!mPrimaryHWVsyncEnabled && mHWVsyncAvailable) {
mPrimaryDispSync->beginResync();
@@ -1374,6 +1446,7 @@ void SurfaceFlinger::resyncToHardwareVsync(bool makeAvailable, nsecs_t period) {
}
void SurfaceFlinger::disableHardwareVsync(bool makeUnavailable) {
+ assert(!mUseScheduler);
Mutex::Autolock _l(mHWVsyncLock);
if (mPrimaryHWVsyncEnabled) {
mEventControlThread->setVsyncEnabled(false);
@@ -1482,8 +1555,7 @@ void SurfaceFlinger::setRefreshRateTo(RefreshRateType refreshRate) {
// TODO(b/113612090): There should be a better way at determining which config
// has the right refresh rate.
if (std::abs(fps - newFps) <= 1) {
- setActiveConfigInternal(getInternalDisplayTokenLocked(), i);
- ATRACE_INT("FPS", newFps);
+ setDesiredActiveConfig(getInternalDisplayTokenLocked(), i);
}
}
}
@@ -1627,14 +1699,16 @@ void SurfaceFlinger::onMessageReceived(int32_t what) {
ATRACE_CALL();
switch (what) {
case MessageQueue::INVALIDATE: {
+ if (!updateSetActiveConfigStateMachine()) {
+ break;
+ }
+
if (mUseScheduler) {
// This call is made each time SF wakes up and creates a new frame.
mScheduler->incrementFrameCounter();
}
- bool frameMissed = !mHadClientComposition &&
- mPreviousPresentFence != Fence::NO_FENCE &&
- (mPreviousPresentFence->getSignalTime() ==
- Fence::SIGNAL_TIME_PENDING);
+ bool frameMissed = !mHadClientComposition && mPreviousPresentFence != Fence::NO_FENCE &&
+ (mPreviousPresentFence->getStatus() == Fence::Status::Unsignaled);
mFrameMissedCount += frameMissed;
ATRACE_INT("FrameMissed", static_cast<int>(frameMissed));
if (frameMissed) {
@@ -3041,7 +3115,12 @@ void SurfaceFlinger::updateCursorAsync()
void SurfaceFlinger::latchAndReleaseBuffer(const sp<Layer>& layer) {
if (layer->hasReadyFrame()) {
- const nsecs_t expectedPresentTime = mPrimaryDispSync->expectedPresentTime();
+ nsecs_t expectedPresentTime;
+ if (mUseScheduler) {
+ expectedPresentTime = mScheduler->expectedPresentTime();
+ } else {
+ expectedPresentTime = mPrimaryDispSync->expectedPresentTime();
+ }
if (layer->shouldPresentNow(expectedPresentTime)) {
bool ignored = false;
layer->latchBuffer(ignored, systemTime(), Fence::NO_FENCE);
@@ -3273,7 +3352,12 @@ bool SurfaceFlinger::handlePageFlip()
mDrawingState.traverseInZOrder([&](Layer* layer) {
if (layer->hasReadyFrame()) {
frameQueued = true;
- const nsecs_t expectedPresentTime = mPrimaryDispSync->expectedPresentTime();
+ nsecs_t expectedPresentTime;
+ if (mUseScheduler) {
+ expectedPresentTime = mScheduler->expectedPresentTime();
+ } else {
+ expectedPresentTime = mPrimaryDispSync->expectedPresentTime();
+ }
if (layer->shouldPresentNow(expectedPresentTime)) {
mLayersWithQueuedFrames.push_back(layer);
} else {
@@ -3614,7 +3698,12 @@ bool SurfaceFlinger::containsAnyInvalidClientState(const Vector<ComposerState>&
bool SurfaceFlinger::transactionIsReadyToBeApplied(int64_t desiredPresentTime,
const Vector<ComposerState>& states) {
- const nsecs_t expectedPresentTime = mPrimaryDispSync->expectedPresentTime();
+ nsecs_t expectedPresentTime;
+ if (mUseScheduler) {
+ expectedPresentTime = mScheduler->expectedPresentTime();
+ } else {
+ expectedPresentTime = mPrimaryDispSync->expectedPresentTime();
+ }
// Do not present if the desiredPresentTime has not passed unless it is more than one second
// in the future. We ignore timestamps more than 1 second in the future for stability reasons.
if (desiredPresentTime >= 0 && desiredPresentTime >= expectedPresentTime &&
diff --git a/services/surfaceflinger/SurfaceFlinger.h b/services/surfaceflinger/SurfaceFlinger.h
index 6546973411..a748bc599e 100644
--- a/services/surfaceflinger/SurfaceFlinger.h
+++ b/services/surfaceflinger/SurfaceFlinger.h
@@ -437,7 +437,12 @@ private:
const Rect& sourceCrop, float frameScale, bool childrenOnly) override;
status_t getDisplayStats(const sp<IBinder>& displayToken, DisplayStatInfo* stats) override;
status_t getDisplayConfigs(const sp<IBinder>& displayToken,
- Vector<DisplayInfo>* configs) override;
+ Vector<DisplayInfo>* configs) override {
+ Mutex::Autolock _l(mStateLock);
+ return getDisplayConfigsLocked(displayToken, configs);
+ }
+ status_t getDisplayConfigsLocked(const sp<IBinder>& displayToken, Vector<DisplayInfo>* configs)
+ REQUIRES(mStateLock);
int getActiveConfig(const sp<IBinder>& displayToken) override;
status_t getDisplayColorModes(const sp<IBinder>& displayToken,
Vector<ui::ColorMode>* configs) override;
@@ -503,8 +508,18 @@ private:
// called on the main thread in response to initializeDisplays()
void onInitializeDisplays() REQUIRES(mStateLock);
- // called on the main thread in response to setActiveConfig()
- void setActiveConfigInternal(const sp<IBinder>& displayToken, int mode) REQUIRES(mStateLock);
+ // Sets the desired active config bit. It obtains the lock, and sets mDesiredActiveConfig.
+ void setDesiredActiveConfig(const sp<IBinder>& displayToken, int mode) REQUIRES(mStateLock);
+ // Calls setActiveConfig in HWC.
+ void setActiveConfigInHWC();
+ // Once HWC has returned the present fence, this sets the active config and a new refresh
+ // rate in SF. It also triggers HWC vsync.
+ void setActiveConfigInternal() REQUIRES(mStateLock);
+ // Active config is updated on INVALIDATE call in a state machine-like manner. When the
+ // desired config was set, HWC needs to update the pannel on the next refresh, and when
+ // we receive the fence back, we know that the process was complete. It returns whether
+ // the invalidate process should continue.
+ bool updateSetActiveConfigStateMachine();
// called on the main thread in response to setPowerMode()
void setPowerModeInternal(const sp<DisplayDevice>& display, int mode) REQUIRES(mStateLock);
@@ -1084,6 +1099,34 @@ private:
sp<Scheduler::ConnectionHandle> mSfConnectionHandle;
std::unique_ptr<scheduler::RefreshRateStats> mRefreshRateStats;
+ // The following structs are used for configuring active config state at a desired time,
+ // which is once per vsync at invalidate time.
+ enum SetActiveConfigState {
+ NONE, // not in progress
+ NOTIFIED_HWC, // call to HWC has been made
+ REFRESH_RECEIVED // onRefresh was received from HWC
+ };
+ std::atomic<SetActiveConfigState> mSetActiveConfigState = SetActiveConfigState::NONE;
+
+ struct ActiveConfigInfo {
+ int configId;
+ sp<IBinder> displayToken;
+
+ bool operator!=(const ActiveConfigInfo& other) const {
+ if (configId != other.configId) {
+ return true;
+ }
+ return (displayToken != other.displayToken);
+ }
+ };
+ std::mutex mActiveConfigLock;
+ // This bit is set once we start setting the config. We read from this bit during the
+ // process. If at the end, this bit is different than mDesiredActiveConfig, we restart
+ // the process.
+ ActiveConfigInfo mUpcomingActiveConfig; // Always read and written on the main thread.
+ // This bit can be set at any point in time when the system wants the new config.
+ ActiveConfigInfo mDesiredActiveConfig GUARDED_BY(mActiveConfigLock);
+
/* ------------------------------------------------------------------------ */
sp<IInputFlinger> mInputFlinger;
generated by cgit v1.2.3-59-g8ed1b (git 2.39.0) at 2026-01-10 17:51:29 +0000