Merge "Output::presentFrameAndReleaseLayers: flush pending commands for OFF displays" into main
diff --git a/services/surfaceflinger/CompositionEngine/include/compositionengine/Output.h b/services/surfaceflinger/CompositionEngine/include/compositionengine/Output.h
index d420838..191d475 100644
--- a/services/surfaceflinger/CompositionEngine/include/compositionengine/Output.h
+++ b/services/surfaceflinger/CompositionEngine/include/compositionengine/Output.h
@@ -306,7 +306,7 @@
     virtual void finishFrame(GpuCompositionResult&&) = 0;
     virtual std::optional<base::unique_fd> composeSurfaces(
             const Region&, std::shared_ptr<renderengine::ExternalTexture>, base::unique_fd&) = 0;
-    virtual void presentFrameAndReleaseLayers() = 0;
+    virtual void presentFrameAndReleaseLayers(bool flushEvenWhenDisabled) = 0;
     virtual void renderCachedSets(const CompositionRefreshArgs&) = 0;
     virtual bool chooseCompositionStrategy(
             std::optional<android::HWComposer::DeviceRequestedChanges>*) = 0;
@@ -314,6 +314,7 @@
             const std::optional<android::HWComposer::DeviceRequestedChanges>& changes) = 0;
     virtual bool getSkipColorTransform() const = 0;
     virtual FrameFences presentFrame() = 0;
+    virtual void executeCommands() = 0;
     virtual std::vector<LayerFE::LayerSettings> generateClientCompositionRequests(
             bool supportsProtectedContent, ui::Dataspace outputDataspace,
             std::vector<LayerFE*> &outLayerRef) = 0;
diff --git a/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/Display.h b/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/Display.h
index d87968f..d1eff24 100644
--- a/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/Display.h
+++ b/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/Display.h
@@ -60,6 +60,7 @@
     void applyCompositionStrategy(const std::optional<DeviceRequestedChanges>&) override;
     bool getSkipColorTransform() const override;
     compositionengine::Output::FrameFences presentFrame() override;
+    void executeCommands() override;
     void setExpensiveRenderingExpected(bool) override;
     void finishFrame(GpuCompositionResult&&) override;
     bool supportsOffloadPresent() const override;
diff --git a/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/Output.h b/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/Output.h
index adcbbb9..9990a74 100644
--- a/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/Output.h
+++ b/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/Output.h
@@ -104,7 +104,7 @@
     std::optional<base::unique_fd> composeSurfaces(const Region&,
                                                    std::shared_ptr<renderengine::ExternalTexture>,
                                                    base::unique_fd&) override;
-    void presentFrameAndReleaseLayers() override;
+    void presentFrameAndReleaseLayers(bool flushEvenWhenDisabled) override;
     void renderCachedSets(const CompositionRefreshArgs&) override;
     void cacheClientCompositionRequests(uint32_t) override;
     bool canPredictCompositionStrategy(const CompositionRefreshArgs&) override;
@@ -123,7 +123,8 @@
     virtual std::future<bool> chooseCompositionStrategyAsync(
             std::optional<android::HWComposer::DeviceRequestedChanges>*);
     virtual void resetCompositionStrategy();
-    virtual ftl::Future<std::monostate> presentFrameAndReleaseLayersAsync();
+    virtual ftl::Future<std::monostate> presentFrameAndReleaseLayersAsync(
+            bool flushEvenWhenDisabled);
 
 protected:
     std::unique_ptr<compositionengine::OutputLayer> createOutputLayer(const sp<LayerFE>&) const;
@@ -137,6 +138,7 @@
     void applyCompositionStrategy(const std::optional<DeviceRequestedChanges>&) override{};
     bool getSkipColorTransform() const override;
     compositionengine::Output::FrameFences presentFrame() override;
+    void executeCommands() override {}
     virtual renderengine::DisplaySettings generateClientCompositionDisplaySettings(
             const std::shared_ptr<renderengine::ExternalTexture>& buffer) const;
     std::vector<LayerFE::LayerSettings> generateClientCompositionRequests(
diff --git a/services/surfaceflinger/CompositionEngine/include/compositionengine/mock/Output.h b/services/surfaceflinger/CompositionEngine/include/compositionengine/mock/Output.h
index 3f3deae..d5bf2b5 100644
--- a/services/surfaceflinger/CompositionEngine/include/compositionengine/mock/Output.h
+++ b/services/surfaceflinger/CompositionEngine/include/compositionengine/mock/Output.h
@@ -121,9 +121,10 @@
                                                 base::unique_fd&));
     MOCK_CONST_METHOD0(getSkipColorTransform, bool());
 
-    MOCK_METHOD0(presentFrameAndReleaseLayers, void());
+    MOCK_METHOD(void, presentFrameAndReleaseLayers, (bool flushEvenWhenDisabled));
     MOCK_METHOD1(renderCachedSets, void(const CompositionRefreshArgs&));
     MOCK_METHOD0(presentFrame, compositionengine::Output::FrameFences());
+    MOCK_METHOD(void, executeCommands, ());
 
     MOCK_METHOD3(generateClientCompositionRequests,
                  std::vector<LayerFE::LayerSettings>(bool, ui::Dataspace, std::vector<compositionengine::LayerFE*>&));
diff --git a/services/surfaceflinger/CompositionEngine/src/Display.cpp b/services/surfaceflinger/CompositionEngine/src/Display.cpp
index 83b1b68..c1617d7 100644
--- a/services/surfaceflinger/CompositionEngine/src/Display.cpp
+++ b/services/surfaceflinger/CompositionEngine/src/Display.cpp
@@ -361,6 +361,15 @@
             static_cast<ui::PixelFormat>(clientTargetProperty.clientTargetProperty.pixelFormat));
 }
 
+void Display::executeCommands() {
+    const auto halDisplayIdOpt = HalDisplayId::tryCast(mId);
+    if (mIsDisconnected || !halDisplayIdOpt) {
+        return;
+    }
+
+    getCompositionEngine().getHwComposer().executeCommands(*halDisplayIdOpt);
+}
+
 compositionengine::Output::FrameFences Display::presentFrame() {
     auto fences = impl::Output::presentFrame();
 
diff --git a/services/surfaceflinger/CompositionEngine/src/Output.cpp b/services/surfaceflinger/CompositionEngine/src/Output.cpp
index 84f3f25..5b9a102 100644
--- a/services/surfaceflinger/CompositionEngine/src/Output.cpp
+++ b/services/surfaceflinger/CompositionEngine/src/Output.cpp
@@ -479,8 +479,9 @@
     devOptRepaintFlash(refreshArgs);
     finishFrame(std::move(result));
     ftl::Future<std::monostate> future;
+    const bool flushEvenWhenDisabled = !refreshArgs.bufferIdsToUncache.empty();
     if (mOffloadPresent) {
-        future = presentFrameAndReleaseLayersAsync();
+        future = presentFrameAndReleaseLayersAsync(flushEvenWhenDisabled);
 
         // Only offload for this frame. The next frame will determine whether it
         // needs to be offloaded. Leave the HwcAsyncWorker in place. For one thing,
@@ -488,7 +489,7 @@
         // we don't want to churn.
         mOffloadPresent = false;
     } else {
-        presentFrameAndReleaseLayers();
+        presentFrameAndReleaseLayers(flushEvenWhenDisabled);
         future = ftl::yield<std::monostate>({});
     }
     renderCachedSets(refreshArgs);
@@ -1100,9 +1101,9 @@
     finishPrepareFrame();
 }
 
-ftl::Future<std::monostate> Output::presentFrameAndReleaseLayersAsync() {
+ftl::Future<std::monostate> Output::presentFrameAndReleaseLayersAsync(bool flushEvenWhenDisabled) {
     return ftl::Future<bool>(std::move(mHwComposerAsyncWorker->send([&]() {
-               presentFrameAndReleaseLayers();
+               presentFrameAndReleaseLayers(flushEvenWhenDisabled);
                return true;
            })))
             .then([](bool) { return std::monostate{}; });
@@ -1177,7 +1178,8 @@
         }
     }
 
-    presentFrameAndReleaseLayers();
+    constexpr bool kFlushEvenWhenDisabled = false;
+    presentFrameAndReleaseLayers(kFlushEvenWhenDisabled);
 
     std::this_thread::sleep_for(*refreshArgs.devOptFlashDirtyRegionsDelay);
 
@@ -1567,11 +1569,16 @@
     return false;
 }
 
-void Output::presentFrameAndReleaseLayers() {
+void Output::presentFrameAndReleaseLayers(bool flushEvenWhenDisabled) {
     ATRACE_FORMAT("%s for %s", __func__, mNamePlusId.c_str());
     ALOGV(__FUNCTION__);
 
     if (!getState().isEnabled) {
+        if (flushEvenWhenDisabled && FlagManager::getInstance().flush_buffer_slots_to_uncache()) {
+            // Some commands, like clearing buffer slots, should still be executed
+            // even if the display is not enabled.
+            executeCommands();
+        }
         return;
     }
 
diff --git a/services/surfaceflinger/CompositionEngine/tests/DisplayTest.cpp b/services/surfaceflinger/CompositionEngine/tests/DisplayTest.cpp
index a95a5c6..39163ea 100644
--- a/services/surfaceflinger/CompositionEngine/tests/DisplayTest.cpp
+++ b/services/surfaceflinger/CompositionEngine/tests/DisplayTest.cpp
@@ -1067,8 +1067,8 @@
 
     EXPECT_CALL(mHwComposer, presentAndGetReleaseFences(_, _));
     EXPECT_CALL(*mDisplaySurface, onFrameCommitted());
-
-    mDisplay->presentFrameAndReleaseLayers();
+    constexpr bool kFlushEvenWhenDisabled = false;
+    mDisplay->presentFrameAndReleaseLayers(kFlushEvenWhenDisabled);
 }
 
 } // namespace
diff --git a/services/surfaceflinger/CompositionEngine/tests/MockHWComposer.h b/services/surfaceflinger/CompositionEngine/tests/MockHWComposer.h
index 4612117..629d9f2 100644
--- a/services/surfaceflinger/CompositionEngine/tests/MockHWComposer.h
+++ b/services/surfaceflinger/CompositionEngine/tests/MockHWComposer.h
@@ -63,6 +63,7 @@
                 (override));
     MOCK_METHOD2(presentAndGetReleaseFences,
                  status_t(HalDisplayId, std::optional<std::chrono::steady_clock::time_point>));
+    MOCK_METHOD(status_t, executeCommands, (HalDisplayId));
     MOCK_METHOD2(setPowerMode, status_t(PhysicalDisplayId, hal::PowerMode));
     MOCK_METHOD2(setActiveConfig, status_t(HalDisplayId, size_t));
     MOCK_METHOD2(setColorTransform, status_t(HalDisplayId, const mat4&));
diff --git a/services/surfaceflinger/CompositionEngine/tests/OutputTest.cpp b/services/surfaceflinger/CompositionEngine/tests/OutputTest.cpp
index 0dc3c9f..c34168d 100644
--- a/services/surfaceflinger/CompositionEngine/tests/OutputTest.cpp
+++ b/services/surfaceflinger/CompositionEngine/tests/OutputTest.cpp
@@ -2014,7 +2014,7 @@
         MOCK_METHOD0(prepareFrameAsync, GpuCompositionResult());
         MOCK_METHOD1(devOptRepaintFlash, void(const compositionengine::CompositionRefreshArgs&));
         MOCK_METHOD1(finishFrame, void(GpuCompositionResult&&));
-        MOCK_METHOD0(presentFrameAndReleaseLayers, void());
+        MOCK_METHOD(void, presentFrameAndReleaseLayers, (bool flushEvenWhenDisabled), (override));
         MOCK_METHOD1(renderCachedSets, void(const compositionengine::CompositionRefreshArgs&));
         MOCK_METHOD1(canPredictCompositionStrategy, bool(const CompositionRefreshArgs&));
         MOCK_METHOD(void, setHintSessionRequiresRenderEngine, (bool requiresRenderEngine),
@@ -2046,7 +2046,7 @@
     EXPECT_CALL(mOutput, prepareFrame());
     EXPECT_CALL(mOutput, devOptRepaintFlash(Ref(args)));
     EXPECT_CALL(mOutput, finishFrame(_));
-    EXPECT_CALL(mOutput, presentFrameAndReleaseLayers());
+    EXPECT_CALL(mOutput, presentFrameAndReleaseLayers(false));
     EXPECT_CALL(mOutput, renderCachedSets(Ref(args)));
 
     mOutput.present(args);
@@ -2067,7 +2067,7 @@
     EXPECT_CALL(mOutput, prepareFrameAsync());
     EXPECT_CALL(mOutput, devOptRepaintFlash(Ref(args)));
     EXPECT_CALL(mOutput, finishFrame(_));
-    EXPECT_CALL(mOutput, presentFrameAndReleaseLayers());
+    EXPECT_CALL(mOutput, presentFrameAndReleaseLayers(false));
     EXPECT_CALL(mOutput, renderCachedSets(Ref(args)));
 
     mOutput.present(args);
@@ -2913,7 +2913,7 @@
                      std::optional<base::unique_fd>(const Region&,
                                                     std::shared_ptr<renderengine::ExternalTexture>,
                                                     base::unique_fd&));
-        MOCK_METHOD0(presentFrameAndReleaseLayers, void());
+        MOCK_METHOD(void, presentFrameAndReleaseLayers, (bool flushEvenWhenDisabled));
         MOCK_METHOD0(prepareFrame, void());
         MOCK_METHOD0(updateProtectedContentState, void());
         MOCK_METHOD2(dequeueRenderBuffer,
@@ -2950,7 +2950,8 @@
     mOutput.mState.isEnabled = false;
 
     InSequence seq;
-    EXPECT_CALL(mOutput, presentFrameAndReleaseLayers());
+    constexpr bool kFlushEvenWhenDisabled = false;
+    EXPECT_CALL(mOutput, presentFrameAndReleaseLayers(kFlushEvenWhenDisabled));
     EXPECT_CALL(mOutput, prepareFrame());
 
     mOutput.devOptRepaintFlash(mRefreshArgs);
@@ -2962,7 +2963,8 @@
 
     InSequence seq;
     EXPECT_CALL(mOutput, getDirtyRegion()).WillOnce(Return(kEmptyRegion));
-    EXPECT_CALL(mOutput, presentFrameAndReleaseLayers());
+    constexpr bool kFlushEvenWhenDisabled = false;
+    EXPECT_CALL(mOutput, presentFrameAndReleaseLayers(kFlushEvenWhenDisabled));
     EXPECT_CALL(mOutput, prepareFrame());
 
     mOutput.devOptRepaintFlash(mRefreshArgs);
@@ -2978,7 +2980,8 @@
     EXPECT_CALL(mOutput, dequeueRenderBuffer(_, _));
     EXPECT_CALL(mOutput, composeSurfaces(RegionEq(kNotEmptyRegion), _, _));
     EXPECT_CALL(*mRenderSurface, queueBuffer(_, 1.f));
-    EXPECT_CALL(mOutput, presentFrameAndReleaseLayers());
+    constexpr bool kFlushEvenWhenDisabled = false;
+    EXPECT_CALL(mOutput, presentFrameAndReleaseLayers(kFlushEvenWhenDisabled));
     EXPECT_CALL(mOutput, prepareFrame());
 
     mOutput.devOptRepaintFlash(mRefreshArgs);
@@ -2996,7 +2999,7 @@
                      std::optional<base::unique_fd>(const Region&,
                                                     std::shared_ptr<renderengine::ExternalTexture>,
                                                     base::unique_fd&));
-        MOCK_METHOD0(presentFrameAndReleaseLayers, void());
+        MOCK_METHOD(void, presentFrameAndReleaseLayers, (bool flushEvenWhenDisabled), (override));
         MOCK_METHOD0(updateProtectedContentState, void());
         MOCK_METHOD2(dequeueRenderBuffer,
                      bool(base::unique_fd*, std::shared_ptr<renderengine::ExternalTexture>*));
@@ -3139,7 +3142,8 @@
     struct OutputPartialMock : public OutputPartialMockBase {
         // Sets up the helper functions called by the function under test to use
         // mock implementations.
-        MOCK_METHOD0(presentFrame, compositionengine::Output::FrameFences());
+        MOCK_METHOD(compositionengine::Output::FrameFences, presentFrame, ());
+        MOCK_METHOD(void, executeCommands, ());
     };
 
     struct Layer {
@@ -3177,9 +3181,67 @@
 };
 
 TEST_F(OutputPostFramebufferTest, ifNotEnabledDoesNothing) {
+    SET_FLAG_FOR_TEST(com::android::graphics::surfaceflinger::flags::flush_buffer_slots_to_uncache,
+                      true);
     mOutput.mState.isEnabled = false;
+    EXPECT_CALL(mOutput, executeCommands()).Times(0);
+    EXPECT_CALL(mOutput, presentFrame()).Times(0);
 
-    mOutput.presentFrameAndReleaseLayers();
+    constexpr bool kFlushEvenWhenDisabled = false;
+    mOutput.presentFrameAndReleaseLayers(kFlushEvenWhenDisabled);
+}
+
+TEST_F(OutputPostFramebufferTest, ifNotEnabledExecutesCommandsIfFlush) {
+    SET_FLAG_FOR_TEST(com::android::graphics::surfaceflinger::flags::flush_buffer_slots_to_uncache,
+                      true);
+    mOutput.mState.isEnabled = false;
+    EXPECT_CALL(mOutput, executeCommands());
+    EXPECT_CALL(mOutput, presentFrame()).Times(0);
+
+    constexpr bool kFlushEvenWhenDisabled = true;
+    mOutput.presentFrameAndReleaseLayers(kFlushEvenWhenDisabled);
+}
+
+TEST_F(OutputPostFramebufferTest, ifEnabledDoNotExecuteCommands) {
+    SET_FLAG_FOR_TEST(com::android::graphics::surfaceflinger::flags::flush_buffer_slots_to_uncache,
+                      true);
+    mOutput.mState.isEnabled = true;
+
+    compositionengine::Output::FrameFences frameFences;
+
+    EXPECT_CALL(mOutput, getOutputLayerCount()).WillOnce(Return(0u));
+
+    // This should only be called for disabled outputs. This test's goal is to verify this line;
+    // the other expectations help satisfy the StrictMocks.
+    EXPECT_CALL(mOutput, executeCommands()).Times(0);
+
+    EXPECT_CALL(mOutput, presentFrame()).WillOnce(Return(frameFences));
+    EXPECT_CALL(*mRenderSurface, onPresentDisplayCompleted());
+
+    constexpr bool kFlushEvenWhenDisabled = true;
+    mOutput.presentFrameAndReleaseLayers(kFlushEvenWhenDisabled);
+}
+
+TEST_F(OutputPostFramebufferTest, ifEnabledDoNotExecuteCommands2) {
+    // Same test as ifEnabledDoNotExecuteCommands, but with this variable set to false.
+    constexpr bool kFlushEvenWhenDisabled = false;
+
+    SET_FLAG_FOR_TEST(com::android::graphics::surfaceflinger::flags::flush_buffer_slots_to_uncache,
+                      true);
+    mOutput.mState.isEnabled = true;
+
+    compositionengine::Output::FrameFences frameFences;
+
+    EXPECT_CALL(mOutput, getOutputLayerCount()).WillOnce(Return(0u));
+
+    // This should only be called for disabled outputs. This test's goal is to verify this line;
+    // the other expectations help satisfy the StrictMocks.
+    EXPECT_CALL(mOutput, executeCommands()).Times(0);
+
+    EXPECT_CALL(mOutput, presentFrame()).WillOnce(Return(frameFences));
+    EXPECT_CALL(*mRenderSurface, onPresentDisplayCompleted());
+
+    mOutput.presentFrameAndReleaseLayers(kFlushEvenWhenDisabled);
 }
 
 TEST_F(OutputPostFramebufferTest, ifEnabledMustFlipThenPresentThenSendPresentCompleted) {
@@ -3197,7 +3259,8 @@
     EXPECT_CALL(mOutput, presentFrame()).WillOnce(Return(frameFences));
     EXPECT_CALL(*mRenderSurface, onPresentDisplayCompleted());
 
-    mOutput.presentFrameAndReleaseLayers();
+    constexpr bool kFlushEvenWhenDisabled = true;
+    mOutput.presentFrameAndReleaseLayers(kFlushEvenWhenDisabled);
 }
 
 TEST_F(OutputPostFramebufferTest, releaseFencesAreSentToLayerFE) {
@@ -3241,7 +3304,8 @@
                 EXPECT_EQ(FenceResult(layer3Fence), futureFenceResult.get());
             });
 
-    mOutput.presentFrameAndReleaseLayers();
+    constexpr bool kFlushEvenWhenDisabled = false;
+    mOutput.presentFrameAndReleaseLayers(kFlushEvenWhenDisabled);
 }
 
 TEST_F(OutputPostFramebufferTest, releaseFencesAreSetInLayerFE) {
@@ -3282,7 +3346,8 @@
                 EXPECT_EQ(FenceResult(layer3Fence), releaseFence);
             });
 
-    mOutput.presentFrameAndReleaseLayers();
+    constexpr bool kFlushEvenWhenDisabled = false;
+    mOutput.presentFrameAndReleaseLayers(kFlushEvenWhenDisabled);
 }
 
 TEST_F(OutputPostFramebufferTest, releaseFencesIncludeClientTargetAcquireFence) {
@@ -3308,7 +3373,8 @@
     EXPECT_CALL(*mLayer2.layerFE, onLayerDisplayed).WillOnce(Return());
     EXPECT_CALL(*mLayer3.layerFE, onLayerDisplayed).WillOnce(Return());
 
-    mOutput.presentFrameAndReleaseLayers();
+    constexpr bool kFlushEvenWhenDisabled = false;
+    mOutput.presentFrameAndReleaseLayers(kFlushEvenWhenDisabled);
 }
 
 TEST_F(OutputPostFramebufferTest, setReleaseFencesIncludeClientTargetAcquireFence) {
@@ -3333,7 +3399,8 @@
     EXPECT_CALL(*mLayer1.layerFE, setReleaseFence).WillOnce(Return());
     EXPECT_CALL(*mLayer2.layerFE, setReleaseFence).WillOnce(Return());
     EXPECT_CALL(*mLayer3.layerFE, setReleaseFence).WillOnce(Return());
-    mOutput.presentFrameAndReleaseLayers();
+    constexpr bool kFlushEvenWhenDisabled = false;
+    mOutput.presentFrameAndReleaseLayers(kFlushEvenWhenDisabled);
 }
 
 TEST_F(OutputPostFramebufferTest, releasedLayersSentPresentFence) {
@@ -3381,7 +3448,8 @@
                 EXPECT_EQ(FenceResult(presentFence), futureFenceResult.get());
             });
 
-    mOutput.presentFrameAndReleaseLayers();
+    constexpr bool kFlushEvenWhenDisabled = false;
+    mOutput.presentFrameAndReleaseLayers(kFlushEvenWhenDisabled);
 
     // After the call the list of released layers should have been cleared.
     EXPECT_TRUE(mOutput.getReleasedLayersForTest().empty());
@@ -3429,7 +3497,8 @@
                 EXPECT_EQ(FenceResult(presentFence), fenceResult);
             });
 
-    mOutput.presentFrameAndReleaseLayers();
+    constexpr bool kFlushEvenWhenDisabled = false;
+    mOutput.presentFrameAndReleaseLayers(kFlushEvenWhenDisabled);
 
     // After the call the list of released layers should have been cleared.
     EXPECT_TRUE(mOutput.getReleasedLayersForTest().empty());
@@ -5272,8 +5341,9 @@
     struct OutputPartialMock : public OutputPrepareFrameAsyncTest::OutputPartialMock {
         // Set up the helper functions called by the function under test to use
         // mock implementations.
-        MOCK_METHOD0(presentFrameAndReleaseLayers, void());
-        MOCK_METHOD0(presentFrameAndReleaseLayersAsync, ftl::Future<std::monostate>());
+        MOCK_METHOD(void, presentFrameAndReleaseLayers, (bool flushEvenWhenDisabled));
+        MOCK_METHOD(ftl::Future<std::monostate>, presentFrameAndReleaseLayersAsync,
+                    (bool flushEvenWhenDisabled));
     };
     OutputPresentFrameAndReleaseLayersAsyncTest() {
         mOutput->setDisplayColorProfileForTest(
@@ -5290,16 +5360,16 @@
 };
 
 TEST_F(OutputPresentFrameAndReleaseLayersAsyncTest, notCalledWhenNotRequested) {
-    EXPECT_CALL(*mOutput, presentFrameAndReleaseLayersAsync()).Times(0);
-    EXPECT_CALL(*mOutput, presentFrameAndReleaseLayers()).Times(1);
+    EXPECT_CALL(*mOutput, presentFrameAndReleaseLayersAsync(_)).Times(0);
+    EXPECT_CALL(*mOutput, presentFrameAndReleaseLayers(_)).Times(1);
 
     mOutput->present(mRefreshArgs);
 }
 
 TEST_F(OutputPresentFrameAndReleaseLayersAsyncTest, calledWhenRequested) {
-    EXPECT_CALL(*mOutput, presentFrameAndReleaseLayersAsync())
+    EXPECT_CALL(*mOutput, presentFrameAndReleaseLayersAsync(false))
             .WillOnce(Return(ftl::yield<std::monostate>({})));
-    EXPECT_CALL(*mOutput, presentFrameAndReleaseLayers()).Times(0);
+    EXPECT_CALL(*mOutput, presentFrameAndReleaseLayers(_)).Times(0);
 
     mOutput->offloadPresentNextFrame();
     mOutput->present(mRefreshArgs);
@@ -5307,9 +5377,10 @@
 
 TEST_F(OutputPresentFrameAndReleaseLayersAsyncTest, calledForOneFrame) {
     ::testing::InSequence inseq;
-    EXPECT_CALL(*mOutput, presentFrameAndReleaseLayersAsync())
+    constexpr bool kFlushEvenWhenDisabled = false;
+    EXPECT_CALL(*mOutput, presentFrameAndReleaseLayersAsync(kFlushEvenWhenDisabled))
             .WillOnce(Return(ftl::yield<std::monostate>({})));
-    EXPECT_CALL(*mOutput, presentFrameAndReleaseLayers()).Times(1);
+    EXPECT_CALL(*mOutput, presentFrameAndReleaseLayers(kFlushEvenWhenDisabled)).Times(1);
 
     mOutput->offloadPresentNextFrame();
     mOutput->present(mRefreshArgs);
@@ -5390,5 +5461,59 @@
     mOutput.updateProtectedContentState();
 }
 
+struct OutputPresentFrameAndReleaseLayersTest : public testing::Test {
+    struct OutputPartialMock : public OutputPartialMockBase {
+        // Sets up the helper functions called by the function under test (and functions we can
+        // ignore) to use mock implementations.
+        MOCK_METHOD1(updateColorProfile, void(const compositionengine::CompositionRefreshArgs&));
+        MOCK_METHOD1(updateCompositionState,
+                     void(const compositionengine::CompositionRefreshArgs&));
+        MOCK_METHOD0(planComposition, void());
+        MOCK_METHOD1(writeCompositionState, void(const compositionengine::CompositionRefreshArgs&));
+        MOCK_METHOD1(setColorTransform, void(const compositionengine::CompositionRefreshArgs&));
+        MOCK_METHOD0(beginFrame, void());
+        MOCK_METHOD0(prepareFrame, void());
+        MOCK_METHOD0(prepareFrameAsync, GpuCompositionResult());
+        MOCK_METHOD1(devOptRepaintFlash, void(const compositionengine::CompositionRefreshArgs&));
+        MOCK_METHOD1(finishFrame, void(GpuCompositionResult&&));
+        MOCK_METHOD(void, presentFrameAndReleaseLayers, (bool flushEvenWhenDisabled), (override));
+        MOCK_METHOD1(renderCachedSets, void(const compositionengine::CompositionRefreshArgs&));
+        MOCK_METHOD1(canPredictCompositionStrategy, bool(const CompositionRefreshArgs&));
+        MOCK_METHOD(void, setHintSessionRequiresRenderEngine, (bool requiresRenderEngine),
+                    (override));
+        MOCK_METHOD(bool, isPowerHintSessionEnabled, (), (override));
+        MOCK_METHOD(bool, isPowerHintSessionGpuReportingEnabled, (), (override));
+    };
+
+    OutputPresentFrameAndReleaseLayersTest() {
+        EXPECT_CALL(mOutput, isPowerHintSessionEnabled()).WillRepeatedly(Return(true));
+        EXPECT_CALL(mOutput, isPowerHintSessionGpuReportingEnabled()).WillRepeatedly(Return(true));
+    }
+
+    NiceMock<OutputPartialMock> mOutput;
+};
+
+TEST_F(OutputPresentFrameAndReleaseLayersTest, noBuffersToUncache) {
+    CompositionRefreshArgs args;
+    ASSERT_TRUE(args.bufferIdsToUncache.empty());
+    mOutput.editState().isEnabled = false;
+
+    constexpr bool kFlushEvenWhenDisabled = false;
+    EXPECT_CALL(mOutput, presentFrameAndReleaseLayers(kFlushEvenWhenDisabled));
+
+    mOutput.present(args);
+}
+
+TEST_F(OutputPresentFrameAndReleaseLayersTest, buffersToUncache) {
+    CompositionRefreshArgs args;
+    args.bufferIdsToUncache.push_back(1);
+    mOutput.editState().isEnabled = false;
+
+    constexpr bool kFlushEvenWhenDisabled = true;
+    EXPECT_CALL(mOutput, presentFrameAndReleaseLayers(kFlushEvenWhenDisabled));
+
+    mOutput.present(args);
+}
+
 } // namespace
 } // namespace android::compositionengine
diff --git a/services/surfaceflinger/DisplayHardware/HWComposer.cpp b/services/surfaceflinger/DisplayHardware/HWComposer.cpp
index 3cfb9ca..3d285a8 100644
--- a/services/surfaceflinger/DisplayHardware/HWComposer.cpp
+++ b/services/surfaceflinger/DisplayHardware/HWComposer.cpp
@@ -600,6 +600,13 @@
     return NO_ERROR;
 }
 
+status_t HWComposer::executeCommands(HalDisplayId displayId) {
+    auto& hwcDisplay = mDisplayData[displayId].hwcDisplay;
+    auto error = static_cast<hal::Error>(mComposer->executeCommands(hwcDisplay->getId()));
+    RETURN_IF_HWC_ERROR_FOR("executeCommands", error, displayId, UNKNOWN_ERROR);
+    return NO_ERROR;
+}
+
 status_t HWComposer::setPowerMode(PhysicalDisplayId displayId, hal::PowerMode mode) {
     RETURN_IF_INVALID_DISPLAY(displayId, BAD_INDEX);
 
diff --git a/services/surfaceflinger/DisplayHardware/HWComposer.h b/services/surfaceflinger/DisplayHardware/HWComposer.h
index bc32cda..9368b7b 100644
--- a/services/surfaceflinger/DisplayHardware/HWComposer.h
+++ b/services/surfaceflinger/DisplayHardware/HWComposer.h
@@ -160,6 +160,8 @@
             HalDisplayId,
             std::optional<std::chrono::steady_clock::time_point> earliestPresentTime) = 0;
 
+    virtual status_t executeCommands(HalDisplayId) = 0;
+
     // set power mode
     virtual status_t setPowerMode(PhysicalDisplayId, hal::PowerMode) = 0;
 
@@ -361,6 +363,8 @@
             HalDisplayId,
             std::optional<std::chrono::steady_clock::time_point> earliestPresentTime) override;
 
+    status_t executeCommands(HalDisplayId) override;
+
     // set power mode
     status_t setPowerMode(PhysicalDisplayId, hal::PowerMode mode) override;
 
diff --git a/services/surfaceflinger/common/FlagManager.cpp b/services/surfaceflinger/common/FlagManager.cpp
index 57b170f..b78809a 100644
--- a/services/surfaceflinger/common/FlagManager.cpp
+++ b/services/surfaceflinger/common/FlagManager.cpp
@@ -148,6 +148,7 @@
     DUMP_READ_ONLY_FLAG(commit_not_composited);
     DUMP_READ_ONLY_FLAG(local_tonemap_screenshots);
     DUMP_READ_ONLY_FLAG(override_trusted_overlay);
+    DUMP_READ_ONLY_FLAG(flush_buffer_slots_to_uncache);
 
 #undef DUMP_READ_ONLY_FLAG
 #undef DUMP_SERVER_FLAG
@@ -246,6 +247,7 @@
 FLAG_MANAGER_READ_ONLY_FLAG(commit_not_composited, "");
 FLAG_MANAGER_READ_ONLY_FLAG(local_tonemap_screenshots, "debug.sf.local_tonemap_screenshots");
 FLAG_MANAGER_READ_ONLY_FLAG(override_trusted_overlay, "");
+FLAG_MANAGER_READ_ONLY_FLAG(flush_buffer_slots_to_uncache, "");
 
 /// Trunk stable server flags ///
 FLAG_MANAGER_SERVER_FLAG(refresh_rate_overlay_on_external_display, "")
diff --git a/services/surfaceflinger/common/include/common/FlagManager.h b/services/surfaceflinger/common/include/common/FlagManager.h
index 9517ff7..302d311 100644
--- a/services/surfaceflinger/common/include/common/FlagManager.h
+++ b/services/surfaceflinger/common/include/common/FlagManager.h
@@ -87,6 +87,7 @@
     bool commit_not_composited() const;
     bool local_tonemap_screenshots() const;
     bool override_trusted_overlay() const;
+    bool flush_buffer_slots_to_uncache() const;
 
 protected:
     // overridden for unit tests
diff --git a/services/surfaceflinger/surfaceflinger_flags_new.aconfig b/services/surfaceflinger/surfaceflinger_flags_new.aconfig
index 02d8819..0772891 100644
--- a/services/surfaceflinger/surfaceflinger_flags_new.aconfig
+++ b/services/surfaceflinger/surfaceflinger_flags_new.aconfig
@@ -55,6 +55,17 @@
 } # detached_mirror
 
 flag {
+  name: "flush_buffer_slots_to_uncache"
+  namespace: "core_graphics"
+  description: "Flush DisplayCommands for disabled displays in order to uncache requested buffers."
+  bug: "330806421"
+  is_fixed_read_only: true
+  metadata {
+    purpose: PURPOSE_BUGFIX
+  }
+} # flush_buffer_slots_to_uncache
+
+flag {
   name: "frame_rate_category_mrr"
   namespace: "core_graphics"
   description: "Enable to use frame rate category and newer frame rate votes such as GTE in SurfaceFlinger scheduler, to guard dVRR changes from MRR devices"