SF: Move toggleKernelIdleTimer to DMC
Remove a special case for the default display by tracking the enabled
state per display.
Bug: 241285876
Bug: 355424160
Flag: EXEMPT refactor
Test: presubmit
Change-Id: Ife697e9f31bdf833910132fb0a71918b29c350eb
diff --git a/services/surfaceflinger/Display/DisplayModeController.cpp b/services/surfaceflinger/Display/DisplayModeController.cpp
index c43d585..0e9218c 100644
--- a/services/surfaceflinger/Display/DisplayModeController.cpp
+++ b/services/surfaceflinger/Display/DisplayModeController.cpp
@@ -22,7 +22,9 @@
#include "Display/DisplaySnapshot.h"
#include "DisplayHardware/HWComposer.h"
+#include <android-base/properties.h>
#include <common/FlagManager.h>
+#include <common/trace.h>
#include <ftl/concat.h>
#include <ftl/expected.h>
#include <log/log.h>
@@ -237,4 +239,63 @@
}
}
+void DisplayModeController::updateKernelIdleTimer(PhysicalDisplayId displayId) {
+ std::lock_guard lock(mDisplayLock);
+ const auto& displayPtr = FTL_TRY(mDisplays.get(displayId).ok_or(ftl::Unit())).get();
+
+ const auto controllerOpt = displayPtr->selectorPtr->kernelIdleTimerController();
+ if (!controllerOpt) return;
+
+ using KernelIdleTimerAction = scheduler::RefreshRateSelector::KernelIdleTimerAction;
+
+ switch (displayPtr->selectorPtr->getIdleTimerAction()) {
+ case KernelIdleTimerAction::TurnOff:
+ if (displayPtr->isKernelIdleTimerEnabled) {
+ SFTRACE_INT("KernelIdleTimer", 0);
+ updateKernelIdleTimer(displayId, std::chrono::milliseconds::zero(), *controllerOpt);
+ displayPtr->isKernelIdleTimerEnabled = false;
+ }
+ break;
+ case KernelIdleTimerAction::TurnOn:
+ if (!displayPtr->isKernelIdleTimerEnabled) {
+ SFTRACE_INT("KernelIdleTimer", 1);
+ const auto timeout = displayPtr->selectorPtr->getIdleTimerTimeout();
+ updateKernelIdleTimer(displayId, timeout, *controllerOpt);
+ displayPtr->isKernelIdleTimerEnabled = true;
+ }
+ break;
+ }
+}
+
+void DisplayModeController::updateKernelIdleTimer(PhysicalDisplayId displayId,
+ std::chrono::milliseconds timeout,
+ KernelIdleTimerController controller) {
+ switch (controller) {
+ case KernelIdleTimerController::HwcApi:
+ mComposerPtr->setIdleTimerEnabled(displayId, timeout);
+ break;
+
+ case KernelIdleTimerController::Sysprop:
+ using namespace std::string_literals;
+ base::SetProperty("graphics.display.kernel_idle_timer.enabled"s,
+ timeout > std::chrono::milliseconds::zero() ? "true"s : "false"s);
+ break;
+ }
+}
+
+auto DisplayModeController::getKernelIdleTimerState(PhysicalDisplayId displayId) const
+ -> KernelIdleTimerState {
+ std::lock_guard lock(mDisplayLock);
+ const auto& displayPtr =
+ FTL_EXPECT(mDisplays.get(displayId).ok_or(KernelIdleTimerState())).get();
+
+ const auto desiredModeIdOpt =
+ (std::scoped_lock(displayPtr->desiredModeLock), displayPtr->desiredModeOpt)
+ .transform([](const display::DisplayModeRequest& request) {
+ return request.mode.modePtr->getId();
+ });
+
+ return {desiredModeIdOpt, displayPtr->isKernelIdleTimerEnabled};
+}
+
} // namespace android::display
diff --git a/services/surfaceflinger/Display/DisplayModeController.h b/services/surfaceflinger/Display/DisplayModeController.h
index 258b04b..9ec603d 100644
--- a/services/surfaceflinger/Display/DisplayModeController.h
+++ b/services/surfaceflinger/Display/DisplayModeController.h
@@ -97,6 +97,17 @@
void setActiveMode(PhysicalDisplayId, DisplayModeId, Fps vsyncRate, Fps renderFps)
EXCLUDES(mDisplayLock);
+ void updateKernelIdleTimer(PhysicalDisplayId) REQUIRES(kMainThreadContext)
+ EXCLUDES(mDisplayLock);
+
+ struct KernelIdleTimerState {
+ std::optional<DisplayModeId> desiredModeIdOpt = std::nullopt;
+ bool isEnabled = false;
+ };
+
+ KernelIdleTimerState getKernelIdleTimerState(PhysicalDisplayId) const
+ REQUIRES(kMainThreadContext) EXCLUDES(mDisplayLock);
+
private:
struct Display {
template <size_t N>
@@ -121,6 +132,8 @@
DisplayModeRequestOpt pendingModeOpt GUARDED_BY(kMainThreadContext);
bool isModeSetPending GUARDED_BY(kMainThreadContext) = false;
+
+ bool isKernelIdleTimerEnabled GUARDED_BY(kMainThreadContext) = false;
};
using DisplayPtr = std::unique_ptr<Display>;
@@ -128,6 +141,10 @@
void setActiveModeLocked(PhysicalDisplayId, DisplayModeId, Fps vsyncRate, Fps renderFps)
REQUIRES(mDisplayLock);
+ using KernelIdleTimerController = scheduler::RefreshRateSelector::KernelIdleTimerController;
+ void updateKernelIdleTimer(PhysicalDisplayId, std::chrono::milliseconds timeout,
+ KernelIdleTimerController) REQUIRES(mDisplayLock);
+
// Set once when initializing the DisplayModeController, which the HWComposer must outlive.
HWComposer* mComposerPtr = nullptr;
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index 9633cc5..b8c69a0 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -205,8 +205,6 @@
using ui::DisplayPrimaries;
using ui::RenderIntent;
-using KernelIdleTimerController = scheduler::RefreshRateSelector::KernelIdleTimerController;
-
namespace hal = android::hardware::graphics::composer::hal;
namespace {
@@ -374,8 +372,6 @@
const String16 sInternalSystemWindow("android.permission.INTERNAL_SYSTEM_WINDOW");
const String16 sWakeupSurfaceFlinger("android.permission.WAKEUP_SURFACE_FLINGER");
-const char* KERNEL_IDLE_TIMER_PROP = "graphics.display.kernel_idle_timer.enabled";
-
// ---------------------------------------------------------------------------
int64_t SurfaceFlinger::dispSyncPresentTimeOffset;
bool SurfaceFlinger::useHwcForRgbToYuv;
@@ -6945,7 +6941,7 @@
// Update the overlay on the main thread to avoid race conditions with
// RefreshRateSelector::getActiveMode
- static_cast<void>(mScheduler->schedule([=, this] {
+ static_cast<void>(mScheduler->schedule([=, this]() FTL_FAKE_GUARD(kMainThreadContext) {
const auto display = FTL_FAKE_GUARD(mStateLock, getDefaultDisplayDeviceLocked());
if (!display) {
ALOGW("%s: default display is null", __func__);
@@ -6953,15 +6949,9 @@
}
if (!display->isRefreshRateOverlayEnabled()) return;
- const auto desiredModeIdOpt =
- mDisplayModeController.getDesiredMode(display->getPhysicalId())
- .transform([](const display::DisplayModeRequest& request) {
- return request.mode.modePtr->getId();
- });
+ const auto state = mDisplayModeController.getKernelIdleTimerState(display->getPhysicalId());
- const bool timerExpired = mKernelIdleTimerEnabled && expired;
-
- if (display->onKernelTimerChanged(desiredModeIdOpt, timerExpired)) {
+ if (display->onKernelTimerChanged(state.desiredModeIdOpt, state.isEnabled && expired)) {
mScheduler->scheduleFrame();
}
}));
@@ -6983,8 +6973,8 @@
}));
}
-std::pair<std::optional<KernelIdleTimerController>, std::chrono::milliseconds>
-SurfaceFlinger::getKernelIdleTimerProperties(PhysicalDisplayId displayId) {
+auto SurfaceFlinger::getKernelIdleTimerProperties(PhysicalDisplayId displayId)
+ -> std::pair<std::optional<KernelIdleTimerController>, std::chrono::milliseconds> {
const bool isKernelIdleTimerHwcSupported = getHwComposer().getComposer()->isSupported(
android::Hwc2::Composer::OptionalFeature::KernelIdleTimer);
const auto timeout = getIdleTimerTimeout(displayId);
@@ -7008,63 +6998,6 @@
return {std::nullopt, timeout};
}
-void SurfaceFlinger::updateKernelIdleTimer(std::chrono::milliseconds timeout,
- KernelIdleTimerController controller,
- PhysicalDisplayId displayId) {
- switch (controller) {
- case KernelIdleTimerController::HwcApi: {
- getHwComposer().setIdleTimerEnabled(displayId, timeout);
- break;
- }
- case KernelIdleTimerController::Sysprop: {
- base::SetProperty(KERNEL_IDLE_TIMER_PROP, timeout > 0ms ? "true" : "false");
- break;
- }
- }
-}
-
-void SurfaceFlinger::toggleKernelIdleTimer() {
- using KernelIdleTimerAction = scheduler::RefreshRateSelector::KernelIdleTimerAction;
-
- const auto display = getDefaultDisplayDeviceLocked();
- if (!display) {
- ALOGW("%s: default display is null", __func__);
- return;
- }
-
- // If the support for kernel idle timer is disabled for the active display,
- // don't do anything.
- const std::optional<KernelIdleTimerController> kernelIdleTimerController =
- display->refreshRateSelector().kernelIdleTimerController();
- if (!kernelIdleTimerController.has_value()) {
- return;
- }
-
- const KernelIdleTimerAction action = display->refreshRateSelector().getIdleTimerAction();
-
- switch (action) {
- case KernelIdleTimerAction::TurnOff:
- if (mKernelIdleTimerEnabled) {
- SFTRACE_INT("KernelIdleTimer", 0);
- std::chrono::milliseconds constexpr kTimerDisabledTimeout = 0ms;
- updateKernelIdleTimer(kTimerDisabledTimeout, kernelIdleTimerController.value(),
- display->getPhysicalId());
- mKernelIdleTimerEnabled = false;
- }
- break;
- case KernelIdleTimerAction::TurnOn:
- if (!mKernelIdleTimerEnabled) {
- SFTRACE_INT("KernelIdleTimer", 1);
- const std::chrono::milliseconds timeout =
- display->refreshRateSelector().getIdleTimerTimeout();
- updateKernelIdleTimer(timeout, kernelIdleTimerController.value(),
- display->getPhysicalId());
- mKernelIdleTimerEnabled = true;
- }
- break;
- }
-}
-
// A simple RAII class to disconnect from an ANativeWindow* when it goes out of scope
class WindowDisconnector {
public:
@@ -7951,7 +7884,7 @@
if (const bool isPacesetter =
mScheduler->onDisplayModeChanged(displayId, selector.getActiveMode())) {
- toggleKernelIdleTimer();
+ mDisplayModeController.updateKernelIdleTimer(displayId);
}
auto preferredModeOpt = getPreferredDisplayMode(displayId, currentPolicy.defaultMode);
diff --git a/services/surfaceflinger/SurfaceFlinger.h b/services/surfaceflinger/SurfaceFlinger.h
index 8b71f3b..b9e9f44 100644
--- a/services/surfaceflinger/SurfaceFlinger.h
+++ b/services/surfaceflinger/SurfaceFlinger.h
@@ -707,22 +707,13 @@
// ICEPowerCallback overrides:
void notifyCpuLoadUp() override;
- // Toggles the kernel idle timer on or off depending the policy decisions around refresh rates.
- void toggleKernelIdleTimer() REQUIRES(mStateLock);
-
using KernelIdleTimerController = scheduler::RefreshRateSelector::KernelIdleTimerController;
// Get the controller and timeout that will help decide how the kernel idle timer will be
// configured and what value to use as the timeout.
std::pair<std::optional<KernelIdleTimerController>, std::chrono::milliseconds>
getKernelIdleTimerProperties(PhysicalDisplayId) REQUIRES(mStateLock);
- // Updates the kernel idle timer either through HWC or through sysprop
- // depending on which controller is provided
- void updateKernelIdleTimer(std::chrono::milliseconds timeoutMs, KernelIdleTimerController,
- PhysicalDisplayId) REQUIRES(mStateLock);
- // Keeps track of whether the kernel idle timer is currently enabled, so we don't have to
- // make calls to sys prop each time.
- bool mKernelIdleTimerEnabled = false;
+
// Show spinner with refresh rate overlay
bool mRefreshRateOverlaySpinner = false;
// Show render rate with refresh rate overlay