diff --git a/services/surfaceflinger/Scheduler/PhaseOffsets.cpp b/services/surfaceflinger/Scheduler/PhaseOffsets.cpp
index 8a2604f..9fa2bbc 100644
--- a/services/surfaceflinger/Scheduler/PhaseOffsets.cpp
+++ b/services/surfaceflinger/Scheduler/PhaseOffsets.cpp
@@ -96,7 +96,6 @@
     highFpsOffsets.late = {RefreshRateType::PERFORMANCE, highFpsLateSfOffsetNs,
                            highFpsLateAppOffsetNs};
 
-    mOffsets.insert({RefreshRateType::POWER_SAVING, defaultOffsets});
     mOffsets.insert({RefreshRateType::DEFAULT, defaultOffsets});
     mOffsets.insert({RefreshRateType::PERFORMANCE, highFpsOffsets});
 
diff --git a/services/surfaceflinger/Scheduler/RefreshRateConfigs.h b/services/surfaceflinger/Scheduler/RefreshRateConfigs.h
index d730058..d813708 100644
--- a/services/surfaceflinger/Scheduler/RefreshRateConfigs.h
+++ b/services/surfaceflinger/Scheduler/RefreshRateConfigs.h
@@ -34,10 +34,9 @@
  */
 class RefreshRateConfigs {
 public:
-    // Enum to indicate which vsync rate to run at. Power saving is intended to be the lowest
-    // (eg. when the screen is in AOD mode or off), default is the old 60Hz, and performance
+    // Enum to indicate which vsync rate to run at. Default is the old 60Hz, and performance
     // is the new 90Hz. Eventually we want to have a way for vendors to map these in the configs.
-    enum class RefreshRateType { POWER_SAVING, DEFAULT, PERFORMANCE };
+    enum class RefreshRateType { DEFAULT, PERFORMANCE };
 
     struct RefreshRate {
         // This config ID corresponds to the position of the config in the vector that is stored
@@ -47,26 +46,57 @@
         std::string name;
         // Refresh rate in frames per second, rounded to the nearest integer.
         uint32_t fps = 0;
-        // config Id (returned from HWC2::Display::Config::getId())
-        hwc2_config_t id;
+        // Vsync period in nanoseconds.
+        nsecs_t vsyncPeriod;
+        // Hwc config Id (returned from HWC2::Display::Config::getId())
+        hwc2_config_t hwcId;
     };
 
+    // Returns true if this device is doing refresh rate switching. This won't change at runtime.
+    bool refreshRateSwitchingSupported() const { return mRefreshRateSwitchingSupported; }
+
+    // Returns the refresh rate map. This map won't be modified at runtime, so it's safe to access
+    // from multiple threads. This can only be called if refreshRateSwitching() returns true.
     // TODO(b/122916473): Get this information from configs prepared by vendors, instead of
     // baking them in.
-    const std::map<RefreshRateType, std::shared_ptr<RefreshRate>>& getRefreshRates() const {
-        return mRefreshRates;
-    }
-    std::shared_ptr<RefreshRate> getRefreshRate(RefreshRateType type) const {
-        const auto& refreshRate = mRefreshRates.find(type);
-        if (refreshRate != mRefreshRates.end()) {
-            return refreshRate->second;
-        }
-        return nullptr;
+    const std::map<RefreshRateType, RefreshRate>& getRefreshRateMap() const {
+        LOG_ALWAYS_FATAL_IF(!mRefreshRateSwitchingSupported);
+        return mRefreshRateMap;
     }
 
-    RefreshRateType getRefreshRateType(hwc2_config_t id) const {
-        for (const auto& [type, refreshRate] : mRefreshRates) {
-            if (refreshRate->id == id) {
+    const RefreshRate& getRefreshRateFromType(RefreshRateType type) const {
+        if (!mRefreshRateSwitchingSupported) {
+            return getCurrentRefreshRate().second;
+        } else {
+            auto refreshRate = mRefreshRateMap.find(type);
+            LOG_ALWAYS_FATAL_IF(refreshRate == mRefreshRateMap.end());
+            return refreshRate->second;
+        }
+    }
+
+    std::pair<RefreshRateType, const RefreshRate&> getCurrentRefreshRate() const {
+        int currentConfig = mCurrentConfig;
+        if (mRefreshRateSwitchingSupported) {
+            for (const auto& [type, refresh] : mRefreshRateMap) {
+                if (refresh.configId == currentConfig) {
+                    return {type, refresh};
+                }
+            }
+            LOG_ALWAYS_FATAL();
+        }
+        return {RefreshRateType::DEFAULT, mRefreshRates[currentConfig]};
+    }
+
+    const RefreshRate& getRefreshRateFromConfigId(int configId) const {
+        LOG_ALWAYS_FATAL_IF(configId >= mRefreshRates.size());
+        return mRefreshRates[configId];
+    }
+
+    RefreshRateType getRefreshRateTypeFromHwcConfigId(hwc2_config_t hwcId) const {
+        if (!mRefreshRateSwitchingSupported) return RefreshRateType::DEFAULT;
+
+        for (const auto& [type, refreshRate] : mRefreshRateMap) {
+            if (refreshRate.hwcId == hwcId) {
                 return type;
             }
         }
@@ -74,64 +104,102 @@
         return RefreshRateType::DEFAULT;
     }
 
-    void populate(const std::vector<std::shared_ptr<const HWC2::Display::Config>>& configs) {
-        mRefreshRates.clear();
+    void setCurrentConfig(int config) {
+        LOG_ALWAYS_FATAL_IF(config >= mRefreshRates.size());
+        mCurrentConfig = config;
+    }
 
-        // This is the rate that HWC encapsulates right now when the device is in DOZE mode.
-        mRefreshRates.emplace(RefreshRateType::POWER_SAVING,
-                              std::make_shared<RefreshRate>(
-                                      RefreshRate{SCREEN_OFF_CONFIG_ID, "ScreenOff", 0,
-                                                  HWC2_SCREEN_OFF_CONFIG_ID}));
+    struct InputConfig {
+        hwc2_config_t hwcId = 0;
+        nsecs_t vsyncPeriod = 0;
+    };
 
-        if (configs.size() < 1) {
-            ALOGE("Device does not have valid configs. Config size is 0.");
-            return;
+    RefreshRateConfigs(bool refreshRateSwitching, const std::vector<InputConfig>& configs,
+                       int currentConfig) {
+        init(refreshRateSwitching, configs, currentConfig);
+    }
+
+    RefreshRateConfigs(bool refreshRateSwitching,
+                       const std::vector<std::shared_ptr<const HWC2::Display::Config>>& configs,
+                       int currentConfig) {
+        std::vector<InputConfig> inputConfigs;
+        for (const auto& config : configs) {
+            inputConfigs.push_back({config->getId(), config->getVsyncPeriod()});
         }
-
-        // Create a map between config index and vsync period. This is all the info we need
-        // from the configs.
-        std::vector<std::pair<int, nsecs_t>> configIdToVsyncPeriod;
-        for (int i = 0; i < configs.size(); ++i) {
-            configIdToVsyncPeriod.emplace_back(i, configs.at(i)->getVsyncPeriod());
-        }
-
-        std::sort(configIdToVsyncPeriod.begin(), configIdToVsyncPeriod.end(),
-                  [](const std::pair<int, nsecs_t>& a, const std::pair<int, nsecs_t>& b) {
-                      return a.second > b.second;
-                  });
-
-        // When the configs are ordered by the resync rate. We assume that the first one is DEFAULT.
-        nsecs_t vsyncPeriod = configIdToVsyncPeriod[0].second;
-        if (vsyncPeriod != 0) {
-            const float fps = 1e9 / vsyncPeriod;
-            const int configId = configIdToVsyncPeriod[0].first;
-            mRefreshRates.emplace(RefreshRateType::DEFAULT,
-                                  std::make_shared<RefreshRate>(
-                                          RefreshRate{configId, base::StringPrintf("%2.ffps", fps),
-                                                      static_cast<uint32_t>(fps),
-                                                      configs.at(configId)->getId()}));
-        }
-
-        if (configs.size() < 2) {
-            return;
-        }
-
-        // When the configs are ordered by the resync rate. We assume that the second one is
-        // PERFORMANCE, eg. the higher rate.
-        vsyncPeriod = configIdToVsyncPeriod[1].second;
-        if (vsyncPeriod != 0) {
-            const float fps = 1e9 / vsyncPeriod;
-            const int configId = configIdToVsyncPeriod[1].first;
-            mRefreshRates.emplace(RefreshRateType::PERFORMANCE,
-                                  std::make_shared<RefreshRate>(
-                                          RefreshRate{configId, base::StringPrintf("%2.ffps", fps),
-                                                      static_cast<uint32_t>(fps),
-                                                      configs.at(configId)->getId()}));
-        }
+        init(refreshRateSwitching, inputConfigs, currentConfig);
     }
 
 private:
-    std::map<RefreshRateType, std::shared_ptr<RefreshRate>> mRefreshRates;
+    void init(bool refreshRateSwitching, const std::vector<InputConfig>& configs,
+              int currentConfig) {
+        mRefreshRateSwitchingSupported = refreshRateSwitching;
+        LOG_ALWAYS_FATAL_IF(configs.empty());
+        LOG_ALWAYS_FATAL_IF(currentConfig >= configs.size());
+        mCurrentConfig = currentConfig;
+
+        auto buildRefreshRate = [&](int configId) -> RefreshRate {
+            const nsecs_t vsyncPeriod = configs[configId].vsyncPeriod;
+            const float fps = 1e9 / vsyncPeriod;
+            return {configId, base::StringPrintf("%2.ffps", fps), static_cast<uint32_t>(fps),
+                    vsyncPeriod, configs[configId].hwcId};
+        };
+
+        for (int i = 0; i < configs.size(); ++i) {
+            mRefreshRates.push_back(buildRefreshRate(i));
+        }
+
+        if (!mRefreshRateSwitchingSupported) return;
+
+        auto findDefaultAndPerfConfigs = [&]() -> std::optional<std::pair<int, int>> {
+            if (configs.size() < 2) {
+                return {};
+            }
+
+            std::vector<const RefreshRate*> sortedRefreshRates;
+            for (const auto& refreshRate : mRefreshRates) {
+                sortedRefreshRates.push_back(&refreshRate);
+            }
+            std::sort(sortedRefreshRates.begin(), sortedRefreshRates.end(),
+                      [](const RefreshRate* refreshRate1, const RefreshRate* refreshRate2) {
+                          return refreshRate1->vsyncPeriod > refreshRate2->vsyncPeriod;
+                      });
+
+            // When the configs are ordered by the resync rate, we assume that
+            // the first one is DEFAULT and the second one is PERFORMANCE,
+            // i.e. the higher rate.
+            if (sortedRefreshRates[0]->vsyncPeriod == 0 ||
+                sortedRefreshRates[1]->vsyncPeriod == 0) {
+                return {};
+            }
+
+            return std::pair<int, int>(sortedRefreshRates[0]->configId,
+                                       sortedRefreshRates[1]->configId);
+        };
+
+        auto defaultAndPerfConfigs = findDefaultAndPerfConfigs();
+        if (!defaultAndPerfConfigs) {
+            mRefreshRateSwitchingSupported = false;
+            return;
+        }
+
+        mRefreshRateMap[RefreshRateType::DEFAULT] = mRefreshRates[defaultAndPerfConfigs->first];
+        mRefreshRateMap[RefreshRateType::PERFORMANCE] =
+                mRefreshRates[defaultAndPerfConfigs->second];
+    }
+
+    // Whether this device is doing refresh rate switching or not. This must not change after this
+    // object is initialized.
+    bool mRefreshRateSwitchingSupported;
+    // The list of refresh rates, indexed by display config ID. This must not change after this
+    // object is initialized.
+    std::vector<RefreshRate> mRefreshRates;
+    // The mapping of refresh rate type to RefreshRate. This must not change after this object is
+    // initialized.
+    std::map<RefreshRateType, RefreshRate> mRefreshRateMap;
+    // The ID of the current config. This will change at runtime. This is set by SurfaceFlinger on
+    // the main thread, and read by the Scheduler (and other objects) on other threads, so it's
+    // atomic.
+    std::atomic<int> mCurrentConfig;
 };
 
 } // namespace scheduler
diff --git a/services/surfaceflinger/Scheduler/RefreshRateStats.h b/services/surfaceflinger/Scheduler/RefreshRateStats.h
index 7e7c630..947eb08 100644
--- a/services/surfaceflinger/Scheduler/RefreshRateStats.h
+++ b/services/surfaceflinger/Scheduler/RefreshRateStats.h
@@ -41,21 +41,18 @@
     static constexpr int64_t MS_PER_DAY = 24 * MS_PER_HOUR;
 
 public:
-    RefreshRateStats(const RefreshRateConfigs& refreshRateConfigs, TimeStats& timeStats)
-          : mRefreshRateConfigs(refreshRateConfigs), mTimeStats(timeStats) {}
+    RefreshRateStats(const RefreshRateConfigs& refreshRateConfigs, TimeStats& timeStats,
+                     int currentConfigMode, int currentPowerMode)
+          : mRefreshRateConfigs(refreshRateConfigs),
+            mTimeStats(timeStats),
+            mCurrentConfigMode(currentConfigMode),
+            mCurrentPowerMode(currentPowerMode) {}
 
-    // Sets power mode. We only collect the information when the power mode is not
-    // HWC_POWER_MODE_NORMAL. When power mode is HWC_POWER_MODE_NORMAL, we collect the stats based
-    // on config mode.
+    // Sets power mode.
     void setPowerMode(int mode) {
         if (mCurrentPowerMode == mode) {
             return;
         }
-        // If power mode is normal, the time is going to be recorded under config modes.
-        if (mode == HWC_POWER_MODE_NORMAL) {
-            mCurrentPowerMode = mode;
-            return;
-        }
         flushTime();
         mCurrentPowerMode = mode;
     }
@@ -79,16 +76,15 @@
         flushTime();
 
         std::unordered_map<std::string, int64_t> totalTime;
-        for (const auto& [type, config] : mRefreshRateConfigs.getRefreshRates()) {
-            int64_t totalTimeForConfig = 0;
-            if (!config) {
-                continue;
-            }
-            if (mConfigModesTotalTime.find(config->configId) != mConfigModesTotalTime.end()) {
-                totalTimeForConfig = mConfigModesTotalTime.at(config->configId);
-            }
-            totalTime[config->name] = totalTimeForConfig;
+        // Multiple configs may map to the same name, e.g. "60fps". Add the
+        // times for such configs together.
+        for (const auto& [config, time] : mConfigModesTotalTime) {
+            totalTime[mRefreshRateConfigs.getRefreshRateFromConfigId(config).name] = 0;
         }
+        for (const auto& [config, time] : mConfigModesTotalTime) {
+            totalTime[mRefreshRateConfigs.getRefreshRateFromConfigId(config).name] += time;
+        }
+        totalTime["ScreenOff"] = mScreenOffTime;
         return totalTime;
     }
 
@@ -104,32 +100,26 @@
     }
 
 private:
-    void flushTime() {
-        // Normal power mode is counted under different config modes.
-        if (mCurrentPowerMode == HWC_POWER_MODE_NORMAL) {
-            flushTimeForMode(mCurrentConfigMode);
-        } else {
-            flushTimeForMode(SCREEN_OFF_CONFIG_ID);
-        }
-    }
-
     // Calculates the time that passed in ms between the last time we recorded time and the time
     // this method was called.
-    void flushTimeForMode(int mode) {
+    void flushTime() {
         nsecs_t currentTime = systemTime();
         nsecs_t timeElapsed = currentTime - mPreviousRecordedTime;
         int64_t timeElapsedMs = ns2ms(timeElapsed);
         mPreviousRecordedTime = currentTime;
 
-        mConfigModesTotalTime[mode] += timeElapsedMs;
-        for (const auto& [type, config] : mRefreshRateConfigs.getRefreshRates()) {
-            if (!config) {
-                continue;
+        uint32_t fps = 0;
+        if (mCurrentPowerMode == HWC_POWER_MODE_NORMAL) {
+            // Normal power mode is counted under different config modes.
+            if (mConfigModesTotalTime.find(mCurrentConfigMode) == mConfigModesTotalTime.end()) {
+                mConfigModesTotalTime[mCurrentConfigMode] = 0;
             }
-            if (config->configId == mode) {
-                mTimeStats.recordRefreshRate(config->fps, timeElapsed);
-            }
+            mConfigModesTotalTime[mCurrentConfigMode] += timeElapsedMs;
+            fps = mRefreshRateConfigs.getRefreshRateFromConfigId(mCurrentConfigMode).fps;
+        } else {
+            mScreenOffTime += timeElapsedMs;
         }
+        mTimeStats.recordRefreshRate(fps, timeElapsed);
     }
 
     // Formats the time in milliseconds into easy to read format.
@@ -149,10 +139,11 @@
     // Aggregate refresh rate statistics for telemetry.
     TimeStats& mTimeStats;
 
-    int64_t mCurrentConfigMode = SCREEN_OFF_CONFIG_ID;
-    int32_t mCurrentPowerMode = HWC_POWER_MODE_OFF;
+    int mCurrentConfigMode;
+    int32_t mCurrentPowerMode;
 
-    std::unordered_map<int /* power mode */, int64_t /* duration in ms */> mConfigModesTotalTime;
+    std::unordered_map<int /* config */, int64_t /* duration in ms */> mConfigModesTotalTime;
+    int64_t mScreenOffTime = 0;
 
     nsecs_t mPreviousRecordedTime = systemTime();
 };
diff --git a/services/surfaceflinger/Scheduler/Scheduler.cpp b/services/surfaceflinger/Scheduler/Scheduler.cpp
index a194106..3b02541 100644
--- a/services/surfaceflinger/Scheduler/Scheduler.cpp
+++ b/services/surfaceflinger/Scheduler/Scheduler.cpp
@@ -133,7 +133,6 @@
 
 sp<Scheduler::ConnectionHandle> Scheduler::createConnection(
         const char* connectionName, nsecs_t phaseOffsetNs, nsecs_t offsetThresholdForNextVsync,
-        ResyncCallback resyncCallback,
         impl::EventThread::InterceptVSyncsCallback interceptCallback) {
     const int64_t id = sNextId++;
     ALOGV("Creating a connection handle with ID: %" PRId64 "\n", id);
@@ -143,8 +142,7 @@
                             offsetThresholdForNextVsync, std::move(interceptCallback));
 
     auto eventThreadConnection =
-            createConnectionInternal(eventThread.get(), std::move(resyncCallback),
-                                     ISurfaceComposer::eConfigChangedSuppress);
+            createConnectionInternal(eventThread.get(), ISurfaceComposer::eConfigChangedSuppress);
     mConnections.emplace(id,
                          std::make_unique<Connection>(new ConnectionHandle(id),
                                                       eventThreadConnection,
@@ -164,17 +162,15 @@
 }
 
 sp<EventThreadConnection> Scheduler::createConnectionInternal(
-        EventThread* eventThread, ResyncCallback&& resyncCallback,
-        ISurfaceComposer::ConfigChanged configChanged) {
-    return eventThread->createEventConnection(std::move(resyncCallback), configChanged);
+        EventThread* eventThread, ISurfaceComposer::ConfigChanged configChanged) {
+    return eventThread->createEventConnection([&] { resync(); }, configChanged);
 }
 
 sp<IDisplayEventConnection> Scheduler::createDisplayEventConnection(
-        const sp<Scheduler::ConnectionHandle>& handle, ResyncCallback resyncCallback,
+        const sp<Scheduler::ConnectionHandle>& handle,
         ISurfaceComposer::ConfigChanged configChanged) {
     RETURN_VALUE_IF_INVALID(nullptr);
-    return createConnectionInternal(mConnections[handle->id]->thread.get(),
-                                    std::move(resyncCallback), configChanged);
+    return createConnectionInternal(mConnections[handle->id]->thread.get(), configChanged);
 }
 
 EventThread* Scheduler::getEventThread(const sp<Scheduler::ConnectionHandle>& handle) {
@@ -264,23 +260,15 @@
     setVsyncPeriod(period);
 }
 
-ResyncCallback Scheduler::makeResyncCallback(GetVsyncPeriod&& getVsyncPeriod) {
-    std::weak_ptr<VsyncState> ptr = mPrimaryVsyncState;
-    return [ptr, getVsyncPeriod = std::move(getVsyncPeriod)]() {
-        if (const auto vsync = ptr.lock()) {
-            vsync->resync(getVsyncPeriod);
-        }
-    };
-}
-
-void Scheduler::VsyncState::resync(const GetVsyncPeriod& getVsyncPeriod) {
+void Scheduler::resync() {
     static constexpr nsecs_t kIgnoreDelay = ms2ns(500);
 
     const nsecs_t now = systemTime();
-    const nsecs_t last = lastResyncTime.exchange(now);
+    const nsecs_t last = mLastResyncTime.exchange(now);
 
     if (now - last > kIgnoreDelay) {
-        scheduler.resyncToHardwareVsync(false, getVsyncPeriod());
+        resyncToHardwareVsync(false,
+                              mRefreshRateConfigs.getCurrentRefreshRate().second.vsyncPeriod);
     }
 }
 
@@ -338,15 +326,19 @@
 
 std::unique_ptr<scheduler::LayerHistory::LayerHandle> Scheduler::registerLayer(
         std::string const& name, int windowType) {
-    RefreshRateType refreshRateType = (windowType == InputWindowInfo::TYPE_WALLPAPER)
-            ? RefreshRateType::DEFAULT
-            : RefreshRateType::PERFORMANCE;
-
-    const auto refreshRate = mRefreshRateConfigs.getRefreshRate(refreshRateType);
-    const uint32_t performanceFps = (refreshRate) ? refreshRate->fps : 0;
-
-    const auto defaultRefreshRate = mRefreshRateConfigs.getRefreshRate(RefreshRateType::DEFAULT);
-    const uint32_t defaultFps = (defaultRefreshRate) ? defaultRefreshRate->fps : 0;
+    uint32_t defaultFps, performanceFps;
+    if (mRefreshRateConfigs.refreshRateSwitchingSupported()) {
+        defaultFps = mRefreshRateConfigs.getRefreshRateFromType(RefreshRateType::DEFAULT).fps;
+        performanceFps =
+                mRefreshRateConfigs
+                        .getRefreshRateFromType((windowType == InputWindowInfo::TYPE_WALLPAPER)
+                                                        ? RefreshRateType::DEFAULT
+                                                        : RefreshRateType::PERFORMANCE)
+                        .fps;
+    } else {
+        defaultFps = mRefreshRateConfigs.getCurrentRefreshRate().second.fps;
+        performanceFps = defaultFps;
+    }
     return mLayerHistory.createLayer(name, defaultFps, performanceFps);
 }
 
@@ -398,17 +390,6 @@
     mChangeRefreshRateCallback = changeRefreshRateCallback;
 }
 
-void Scheduler::setGetCurrentRefreshRateTypeCallback(
-        const GetCurrentRefreshRateTypeCallback&& getCurrentRefreshRateTypeCallback) {
-    std::lock_guard<std::mutex> lock(mCallbackLock);
-    mGetCurrentRefreshRateTypeCallback = getCurrentRefreshRateTypeCallback;
-}
-
-void Scheduler::setGetVsyncPeriodCallback(const GetVsyncPeriod&& getVsyncPeriod) {
-    std::lock_guard<std::mutex> lock(mCallbackLock);
-    mGetVsyncPeriod = getVsyncPeriod;
-}
-
 void Scheduler::updateFrameSkipping(const int64_t skipCount) {
     ATRACE_INT("FrameSkipCount", skipCount);
     if (mSkipCount != skipCount) {
@@ -460,14 +441,12 @@
 
 void Scheduler::resetKernelTimerCallback() {
     ATRACE_INT("ExpiredKernelIdleTimer", 0);
-    std::lock_guard<std::mutex> lock(mCallbackLock);
-    if (mGetVsyncPeriod && mGetCurrentRefreshRateTypeCallback) {
-        // If we're not in performance mode then the kernel timer shouldn't do
-        // anything, as the refresh rate during DPU power collapse will be the
-        // same.
-        if (mGetCurrentRefreshRateTypeCallback() == Scheduler::RefreshRateType::PERFORMANCE) {
-            resyncToHardwareVsync(true, mGetVsyncPeriod());
-        }
+    const auto refreshRate = mRefreshRateConfigs.getCurrentRefreshRate();
+    // If we're not in performance mode then the kernel timer shouldn't do
+    // anything, as the refresh rate during DPU power collapse will be the
+    // same.
+    if (refreshRate.first == Scheduler::RefreshRateType::PERFORMANCE) {
+        resyncToHardwareVsync(true, refreshRate.second.vsyncPeriod);
     }
 }
 
@@ -499,13 +478,12 @@
 void Scheduler::expiredKernelTimerCallback() {
     std::lock_guard<std::mutex> lock(mCallbackLock);
     ATRACE_INT("ExpiredKernelIdleTimer", 1);
-    if (mGetCurrentRefreshRateTypeCallback) {
-        if (mGetCurrentRefreshRateTypeCallback() != Scheduler::RefreshRateType::PERFORMANCE) {
-            // Disable HW Vsync if the timer expired, as we don't need it
-            // enabled if we're not pushing frames, and if we're in PERFORMANCE
-            // mode then we'll need to re-update the DispSync model anyways.
-            disableHardwareVsync(false);
-        }
+    if (mRefreshRateConfigs.getCurrentRefreshRate().first !=
+        Scheduler::RefreshRateType::PERFORMANCE) {
+        // Disable HW Vsync if the timer expired, as we don't need it
+        // enabled if we're not pushing frames, and if we're in PERFORMANCE
+        // mode then we'll need to re-update the DispSync model anyways.
+        disableHardwareVsync(false);
     }
 }
 
@@ -540,6 +518,10 @@
 }
 
 Scheduler::RefreshRateType Scheduler::calculateRefreshRateType() {
+    if (!mRefreshRateConfigs.refreshRateSwitchingSupported()) {
+        return RefreshRateType::DEFAULT;
+    }
+
     // HDR content is not supported on PERFORMANCE mode
     if (mForceHDRContentToDefaultRefreshRate && mIsHDRContent) {
         return RefreshRateType::DEFAULT;
@@ -567,11 +549,11 @@
     }
 
     // Content detection is on, find the appropriate refresh rate with minimal error
-    auto iter = min_element(mRefreshRateConfigs.getRefreshRates().cbegin(),
-                            mRefreshRateConfigs.getRefreshRates().cend(),
+    auto iter = min_element(mRefreshRateConfigs.getRefreshRateMap().cbegin(),
+                            mRefreshRateConfigs.getRefreshRateMap().cend(),
                             [rate = mContentRefreshRate](const auto& l, const auto& r) -> bool {
-                                return std::abs(l.second->fps - static_cast<float>(rate)) <
-                                        std::abs(r.second->fps - static_cast<float>(rate));
+                                return std::abs(l.second.fps - static_cast<float>(rate)) <
+                                        std::abs(r.second.fps - static_cast<float>(rate));
                             });
     RefreshRateType currRefreshRateType = iter->first;
 
@@ -579,11 +561,11 @@
     // 90Hz config. However we should still prefer a lower refresh rate if the content doesn't
     // align well with both
     constexpr float MARGIN = 0.05f;
-    float ratio = mRefreshRateConfigs.getRefreshRate(currRefreshRateType)->fps /
+    float ratio = mRefreshRateConfigs.getRefreshRateFromType(currRefreshRateType).fps /
             float(mContentRefreshRate);
     if (std::abs(std::round(ratio) - ratio) > MARGIN) {
-        while (iter != mRefreshRateConfigs.getRefreshRates().cend()) {
-            ratio = iter->second->fps / float(mContentRefreshRate);
+        while (iter != mRefreshRateConfigs.getRefreshRateMap().cend()) {
+            ratio = iter->second.fps / float(mContentRefreshRate);
 
             if (std::abs(std::round(ratio) - ratio) <= MARGIN) {
                 currRefreshRateType = iter->first;
diff --git a/services/surfaceflinger/Scheduler/Scheduler.h b/services/surfaceflinger/Scheduler/Scheduler.h
index 5d8bb4c..da0a015 100644
--- a/services/surfaceflinger/Scheduler/Scheduler.h
+++ b/services/surfaceflinger/Scheduler/Scheduler.h
@@ -49,9 +49,7 @@
     }
 
     using RefreshRateType = scheduler::RefreshRateConfigs::RefreshRateType;
-    using GetCurrentRefreshRateTypeCallback = std::function<RefreshRateType()>;
     using ChangeRefreshRateCallback = std::function<void(RefreshRateType, ConfigEvent)>;
-    using GetVsyncPeriod = std::function<nsecs_t()>;
 
     // Enum to indicate whether to start the transaction early, or at vsync time.
     enum class TransactionStart { EARLY, NORMAL };
@@ -81,16 +79,6 @@
         const std::unique_ptr<EventThread> thread;
     };
 
-    // Stores per-display state about VSYNC.
-    struct VsyncState {
-        explicit VsyncState(Scheduler& scheduler) : scheduler(scheduler) {}
-
-        void resync(const GetVsyncPeriod&);
-
-        Scheduler& scheduler;
-        std::atomic<nsecs_t> lastResyncTime = 0;
-    };
-
     explicit Scheduler(impl::EventControlThread::SetVSyncEnabledFunction function,
                        const scheduler::RefreshRateConfigs& refreshRateConfig);
 
@@ -98,12 +86,11 @@
 
     /** Creates an EventThread connection. */
     sp<ConnectionHandle> createConnection(const char* connectionName, nsecs_t phaseOffsetNs,
-                                          nsecs_t offsetThresholdForNextVsync, ResyncCallback,
+                                          nsecs_t offsetThresholdForNextVsync,
                                           impl::EventThread::InterceptVSyncsCallback);
 
     sp<IDisplayEventConnection> createDisplayEventConnection(
-            const sp<ConnectionHandle>& handle, ResyncCallback,
-            ISurfaceComposer::ConfigChanged configChanged);
+            const sp<ConnectionHandle>& handle, ISurfaceComposer::ConfigChanged configChanged);
 
     // Getter methods.
     EventThread* getEventThread(const sp<ConnectionHandle>& handle);
@@ -143,8 +130,7 @@
     // no-op.
     // The period is the vsync period from the current display configuration.
     void resyncToHardwareVsync(bool makeAvailable, nsecs_t period);
-    // Creates a callback for resyncing.
-    ResyncCallback makeResyncCallback(GetVsyncPeriod&& getVsyncPeriod);
+    void resync();
     void setRefreshSkipCount(int count);
     // Passes a vsync sample to DispSync. periodFlushed will be true if
     // DispSync detected that the vsync period changed, and false otherwise.
@@ -167,9 +153,6 @@
     void updateFpsBasedOnContent();
     // Callback that gets invoked when Scheduler wants to change the refresh rate.
     void setChangeRefreshRateCallback(const ChangeRefreshRateCallback&& changeRefreshRateCallback);
-    void setGetCurrentRefreshRateTypeCallback(
-            const GetCurrentRefreshRateTypeCallback&& getCurrentRefreshRateType);
-    void setGetVsyncPeriodCallback(const GetVsyncPeriod&& getVsyncPeriod);
 
     // Returns whether idle timer is enabled or not
     bool isIdleTimerEnabled() { return mSetIdleTimerMs > 0; }
@@ -206,7 +189,7 @@
     enum class DisplayPowerTimerState { EXPIRED, RESET };
 
     // Creates a connection on the given EventThread and forwards the given callbacks.
-    sp<EventThreadConnection> createConnectionInternal(EventThread*, ResyncCallback&&,
+    sp<EventThreadConnection> createConnectionInternal(EventThread*,
                                                        ISurfaceComposer::ConfigChanged);
 
     nsecs_t calculateAverage() const;
@@ -261,7 +244,8 @@
     std::mutex mHWVsyncLock;
     bool mPrimaryHWVsyncEnabled GUARDED_BY(mHWVsyncLock);
     bool mHWVsyncAvailable GUARDED_BY(mHWVsyncLock);
-    const std::shared_ptr<VsyncState> mPrimaryVsyncState{std::make_shared<VsyncState>(*this)};
+
+    std::atomic<nsecs_t> mLastResyncTime = 0;
 
     std::unique_ptr<DispSync> mPrimaryDispSync;
     std::unique_ptr<EventControlThread> mEventControlThread;
@@ -297,9 +281,7 @@
     std::unique_ptr<scheduler::IdleTimer> mDisplayPowerTimer;
 
     std::mutex mCallbackLock;
-    GetCurrentRefreshRateTypeCallback mGetCurrentRefreshRateTypeCallback GUARDED_BY(mCallbackLock);
     ChangeRefreshRateCallback mChangeRefreshRateCallback GUARDED_BY(mCallbackLock);
-    GetVsyncPeriod mGetVsyncPeriod GUARDED_BY(mCallbackLock);
 
     // In order to make sure that the features don't override themselves, we need a state machine
     // to keep track which feature requested the config change.
diff --git a/services/surfaceflinger/Scheduler/SchedulerUtils.h b/services/surfaceflinger/Scheduler/SchedulerUtils.h
index ced1899..8649a16 100644
--- a/services/surfaceflinger/Scheduler/SchedulerUtils.h
+++ b/services/surfaceflinger/Scheduler/SchedulerUtils.h
@@ -30,12 +30,6 @@
 // about layers.
 static constexpr size_t ARRAY_SIZE = 30;
 
-// This number is used to have a place holder for when the screen is not NORMAL/ON. Currently
-// the config is not visible to SF, and is completely maintained by HWC. However, we would
-// still like to keep track of time when the device is in this config.
-static constexpr int SCREEN_OFF_CONFIG_ID = -1;
-static constexpr uint32_t HWC2_SCREEN_OFF_CONFIG_ID = 0xffffffff;
-
 // This number is used when we try to determine how long do we keep layer information around
 // before we remove it. It is also used to determine how long the layer stays relevant.
 // This time period captures infrequent updates when playing YouTube video with static image,
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index 01b5948..e118e1e 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -559,14 +559,16 @@
         readPersistentProperties();
         mBootStage = BootStage::FINISHED;
 
-        // set the refresh rate according to the policy
-        const auto& performanceRefreshRate =
-                mRefreshRateConfigs.getRefreshRate(RefreshRateType::PERFORMANCE);
+        if (mRefreshRateConfigs->refreshRateSwitchingSupported()) {
+            // set the refresh rate according to the policy
+            const auto& performanceRefreshRate =
+                    mRefreshRateConfigs->getRefreshRateFromType(RefreshRateType::PERFORMANCE);
 
-        if (performanceRefreshRate && isDisplayConfigAllowed(performanceRefreshRate->configId)) {
-            setRefreshRateTo(RefreshRateType::PERFORMANCE, Scheduler::ConfigEvent::None);
-        } else {
-            setRefreshRateTo(RefreshRateType::DEFAULT, Scheduler::ConfigEvent::None);
+            if (isDisplayConfigAllowed(performanceRefreshRate.configId)) {
+                setRefreshRateTo(RefreshRateType::PERFORMANCE, Scheduler::ConfigEvent::None);
+            } else {
+                setRefreshRateTo(RefreshRateType::DEFAULT, Scheduler::ConfigEvent::None);
+            }
         }
     }));
 }
@@ -609,32 +611,6 @@
     ALOGI("Phase offset NS: %" PRId64 "", mPhaseOffsets->getCurrentAppOffset());
 
     Mutex::Autolock _l(mStateLock);
-    // start the EventThread
-    mScheduler =
-            getFactory().createScheduler([this](bool enabled) { setPrimaryVsyncEnabled(enabled); },
-                                         mRefreshRateConfigs);
-    auto resyncCallback =
-            mScheduler->makeResyncCallback(std::bind(&SurfaceFlinger::getVsyncPeriod, this));
-
-    mAppConnectionHandle =
-            mScheduler->createConnection("app", mVsyncModulator.getOffsets().app,
-                                         mPhaseOffsets->getOffsetThresholdForNextVsync(),
-                                         resyncCallback,
-                                         impl::EventThread::InterceptVSyncsCallback());
-    mSfConnectionHandle =
-            mScheduler->createConnection("sf", mVsyncModulator.getOffsets().sf,
-                                         mPhaseOffsets->getOffsetThresholdForNextVsync(),
-                                         resyncCallback, [this](nsecs_t timestamp) {
-                                             mInterceptor->saveVSyncEvent(timestamp);
-                                         });
-
-    mEventQueue->setEventConnection(mScheduler->getEventConnection(mSfConnectionHandle));
-    mVsyncModulator.setSchedulerAndHandles(mScheduler.get(), mAppConnectionHandle.get(),
-                                           mSfConnectionHandle.get());
-
-    mRegionSamplingThread =
-            new RegionSamplingThread(*this, *mScheduler,
-                                     RegionSamplingThread::EnvironmentTimingTunables());
 
     // Get a RenderEngine for the given display / config (can't fail)
     int32_t renderEngineFeature = 0;
@@ -705,37 +681,6 @@
         ALOGE("Run StartPropertySetThread failed!");
     }
 
-    mScheduler->setChangeRefreshRateCallback(
-            [this](RefreshRateType type, Scheduler::ConfigEvent event) {
-                Mutex::Autolock lock(mStateLock);
-                setRefreshRateTo(type, event);
-            });
-    mScheduler->setGetCurrentRefreshRateTypeCallback([this] {
-        Mutex::Autolock lock(mStateLock);
-        const auto display = getDefaultDisplayDeviceLocked();
-        if (!display) {
-            // If we don't have a default display the fallback to the default
-            // refresh rate type
-            return RefreshRateType::DEFAULT;
-        }
-
-        const int configId = display->getActiveConfig();
-        for (const auto& [type, refresh] : mRefreshRateConfigs.getRefreshRates()) {
-            if (refresh && refresh->configId == configId) {
-                return type;
-            }
-        }
-        // This should never happen, but just gracefully fallback to default.
-        return RefreshRateType::DEFAULT;
-    });
-    mScheduler->setGetVsyncPeriodCallback([this] {
-        Mutex::Autolock lock(mStateLock);
-        return getVsyncPeriod();
-    });
-
-    mRefreshRateConfigs.populate(getHwComposer().getConfigs(*display->getId()));
-    mRefreshRateStats.setConfigMode(getHwComposer().getActiveConfigIndex(*display->getId()));
-
     ALOGV("Done initializing");
 }
 
@@ -889,7 +834,8 @@
         info.xdpi = xdpi;
         info.ydpi = ydpi;
         info.fps = 1e9 / hwConfig->getVsyncPeriod();
-        const auto refreshRateType = mRefreshRateConfigs.getRefreshRateType(hwConfig->getId());
+        const auto refreshRateType =
+                mRefreshRateConfigs->getRefreshRateTypeFromHwcConfigId(hwConfig->getId());
         const auto offset = mPhaseOffsets->getOffsetsForRefreshRate(refreshRateType);
         info.appVsyncOffset = offset.late.app;
 
@@ -991,7 +937,8 @@
     }
 
     std::lock_guard<std::mutex> lock(mActiveConfigLock);
-    mRefreshRateStats.setConfigMode(mUpcomingActiveConfig.configId);
+    mRefreshRateConfigs->setCurrentConfig(mUpcomingActiveConfig.configId);
+    mRefreshRateStats->setConfigMode(mUpcomingActiveConfig.configId);
 
     display->setActiveConfig(mUpcomingActiveConfig.configId);
 
@@ -1270,9 +1217,6 @@
             return;
         }
 
-        auto resyncCallback =
-                mScheduler->makeResyncCallback(std::bind(&SurfaceFlinger::getVsyncPeriod, this));
-
         // TODO(b/128863962): Part of the Injector should be refactored, so that it
         // can be passed to Scheduler.
         if (enable) {
@@ -1284,11 +1228,11 @@
                                            impl::EventThread::InterceptVSyncsCallback(),
                                            "injEventThread");
             }
-            mEventQueue->setEventThread(mInjectorEventThread.get(), std::move(resyncCallback));
+            mEventQueue->setEventThread(mInjectorEventThread.get(), [&] { mScheduler->resync(); });
         } else {
             ALOGV("VSync Injections disabled");
             mEventQueue->setEventThread(mScheduler->getEventThread(mSfConnectionHandle),
-                                        std::move(resyncCallback));
+                                        [&] { mScheduler->resync(); });
         }
 
         mInjectVSyncs = enable;
@@ -1399,16 +1343,10 @@
 
 sp<IDisplayEventConnection> SurfaceFlinger::createDisplayEventConnection(
         ISurfaceComposer::VsyncSource vsyncSource, ISurfaceComposer::ConfigChanged configChanged) {
-    auto resyncCallback = mScheduler->makeResyncCallback([this] {
-        Mutex::Autolock lock(mStateLock);
-        return getVsyncPeriod();
-    });
-
     const auto& handle =
             vsyncSource == eVsyncSourceSurfaceFlinger ? mSfConnectionHandle : mAppConnectionHandle;
 
-    return mScheduler->createDisplayEventConnection(handle, std::move(resyncCallback),
-                                                    configChanged);
+    return mScheduler->createDisplayEventConnection(handle, configChanged);
 }
 
 // ----------------------------------------------------------------------------
@@ -1505,13 +1443,8 @@
     ATRACE_CALL();
 
     // Don't do any updating if the current fps is the same as the new one.
-    const auto& refreshRateConfig = mRefreshRateConfigs.getRefreshRate(refreshRate);
-    if (!refreshRateConfig) {
-        ALOGV("Skipping refresh rate change request for unsupported rate.");
-        return;
-    }
-
-    const int desiredConfigId = refreshRateConfig->configId;
+    const auto& refreshRateConfig = mRefreshRateConfigs->getRefreshRateFromType(refreshRate);
+    const int desiredConfigId = refreshRateConfig.configId;
 
     if (!isDisplayConfigAllowed(desiredConfigId)) {
         ALOGV("Skipping config %d as it is not part of allowed configs", desiredConfigId);
@@ -2594,6 +2527,9 @@
         if (event.connection == HWC2::Connection::Connected) {
             if (!mPhysicalDisplayTokens.count(info->id)) {
                 ALOGV("Creating display %s", to_string(info->id).c_str());
+                if (event.hwcDisplayId == getHwComposer().getInternalHwcDisplayId()) {
+                    initScheduler(info->id);
+                }
                 mPhysicalDisplayTokens[info->id] = new BBinder();
                 DisplayDeviceState state;
                 state.displayId = info->id;
@@ -3052,6 +2988,56 @@
     layer->releasePendingBuffer(systemTime());
 }
 
+void SurfaceFlinger::initScheduler(DisplayId primaryDisplayId) {
+    if (mScheduler) {
+        // In practice it's not allowed to hotplug in/out the primary display once it's been
+        // connected during startup, but some tests do it, so just warn and return.
+        ALOGW("Can't re-init scheduler");
+        return;
+    }
+
+    int currentConfig = getHwComposer().getActiveConfigIndex(primaryDisplayId);
+    mRefreshRateConfigs =
+            std::make_unique<scheduler::RefreshRateConfigs>(refresh_rate_switching(true),
+                                                            getHwComposer().getConfigs(
+                                                                    primaryDisplayId),
+                                                            currentConfig);
+    mRefreshRateStats =
+            std::make_unique<scheduler::RefreshRateStats>(*mRefreshRateConfigs, *mTimeStats,
+                                                          currentConfig, HWC_POWER_MODE_OFF);
+    mRefreshRateStats->setConfigMode(currentConfig);
+
+    // start the EventThread
+    mScheduler =
+            getFactory().createScheduler([this](bool enabled) { setPrimaryVsyncEnabled(enabled); },
+                                         *mRefreshRateConfigs);
+
+    mAppConnectionHandle =
+            mScheduler->createConnection("app", mVsyncModulator.getOffsets().app,
+                                         mPhaseOffsets->getOffsetThresholdForNextVsync(),
+                                         impl::EventThread::InterceptVSyncsCallback());
+    mSfConnectionHandle =
+            mScheduler->createConnection("sf", mVsyncModulator.getOffsets().sf,
+                                         mPhaseOffsets->getOffsetThresholdForNextVsync(),
+                                         [this](nsecs_t timestamp) {
+                                             mInterceptor->saveVSyncEvent(timestamp);
+                                         });
+
+    mEventQueue->setEventConnection(mScheduler->getEventConnection(mSfConnectionHandle));
+    mVsyncModulator.setSchedulerAndHandles(mScheduler.get(), mAppConnectionHandle.get(),
+                                           mSfConnectionHandle.get());
+
+    mRegionSamplingThread =
+            new RegionSamplingThread(*this, *mScheduler,
+                                     RegionSamplingThread::EnvironmentTimingTunables());
+
+    mScheduler->setChangeRefreshRateCallback(
+            [this](RefreshRateType type, Scheduler::ConfigEvent event) {
+                Mutex::Autolock lock(mStateLock);
+                setRefreshRateTo(type, event);
+            });
+}
+
 void SurfaceFlinger::commitTransaction()
 {
     if (!mLayersPendingRemoval.isEmpty()) {
@@ -4557,7 +4543,7 @@
 
     if (display->isPrimary()) {
         mTimeStats->setPowerMode(mode);
-        mRefreshRateStats.setPowerMode(mode);
+        mRefreshRateStats->setPowerMode(mode);
         mScheduler->setDisplayPowerState(mode == HWC_POWER_MODE_NORMAL);
     }
 
@@ -4725,11 +4711,8 @@
                   mUseSmart90ForVideo ? "on" : "off");
     StringAppendF(&result, "Allowed Display Configs: ");
     for (int32_t configId : mAllowedDisplayConfigs) {
-        for (auto refresh : mRefreshRateConfigs.getRefreshRates()) {
-            if (refresh.second && refresh.second->configId == configId) {
-                StringAppendF(&result, "%dHz, ", refresh.second->fps);
-            }
-        }
+        StringAppendF(&result, "%" PRIu32 " Hz, ",
+                      mRefreshRateConfigs->getRefreshRateFromConfigId(configId).fps);
     }
     StringAppendF(&result, "(config override by backdoor: %s)\n\n",
                   mDebugDisplayConfigSetByBackdoor ? "yes" : "no");
@@ -5095,8 +5078,10 @@
      */
     result.append("\nScheduler state:\n");
     result.append(mScheduler->doDump() + "\n");
+    StringAppendF(&result, "+  Refresh rate switching: %s\n",
+                  mRefreshRateConfigs->refreshRateSwitchingSupported() ? "on" : "off");
     StringAppendF(&result, "+  Smart video mode: %s\n\n", mUseSmart90ForVideo ? "on" : "off");
-    result.append(mRefreshRateStats.doDump() + "\n");
+    result.append(mRefreshRateStats->doDump() + "\n");
 
     result.append(mTimeStats->miniDump());
     result.append("\n");
@@ -5562,7 +5547,8 @@
             case 1034: {
                 // TODO(b/129297325): expose this via developer menu option
                 n = data.readInt32();
-                if (n && !mRefreshRateOverlay) {
+                if (n && !mRefreshRateOverlay &&
+                    mRefreshRateConfigs->refreshRateSwitchingSupported()) {
                     RefreshRateType type;
                     {
                         std::lock_guard<std::mutex> lock(mActiveConfigLock);
@@ -6149,15 +6135,21 @@
     ALOGV("Updating allowed configs");
     mAllowedDisplayConfigs = DisplayConfigs(allowedConfigs.begin(), allowedConfigs.end());
 
-    // Set the highest allowed config by iterating backwards on available refresh rates
-    const auto& refreshRates = mRefreshRateConfigs.getRefreshRates();
-    for (auto iter = refreshRates.crbegin(); iter != refreshRates.crend(); ++iter) {
-        if (iter->second && isDisplayConfigAllowed(iter->second->configId)) {
-            ALOGV("switching to config %d", iter->second->configId);
-            setDesiredActiveConfig(
-                    {iter->first, iter->second->configId, Scheduler::ConfigEvent::Changed});
-            break;
+    if (mRefreshRateConfigs->refreshRateSwitchingSupported()) {
+        // Set the highest allowed config by iterating backwards on available refresh rates
+        const auto& refreshRates = mRefreshRateConfigs->getRefreshRateMap();
+        for (auto iter = refreshRates.crbegin(); iter != refreshRates.crend(); ++iter) {
+            if (isDisplayConfigAllowed(iter->second.configId)) {
+                ALOGV("switching to allowed config %d", iter->second.configId);
+                setDesiredActiveConfig(
+                        {iter->first, iter->second.configId, Scheduler::ConfigEvent::Changed});
+                break;
+            }
         }
+    } else if (!allowedConfigs.empty()) {
+        ALOGV("switching to config %d", allowedConfigs[0]);
+        setDesiredActiveConfig(
+                {RefreshRateType::DEFAULT, allowedConfigs[0], Scheduler::ConfigEvent::Changed});
     }
 }
 
diff --git a/services/surfaceflinger/SurfaceFlinger.h b/services/surfaceflinger/SurfaceFlinger.h
index 7f2d4c1..fc40a14 100644
--- a/services/surfaceflinger/SurfaceFlinger.h
+++ b/services/surfaceflinger/SurfaceFlinger.h
@@ -553,6 +553,7 @@
     void executeInputWindowCommands();
     void setInputWindowsFinished();
     void updateCursorAsync();
+    void initScheduler(DisplayId primaryDisplayId);
 
     /* handlePageFlip - latch a new buffer if available and compute the dirty
      * region. Returns whether a new buffer has been latched, i.e., whether it
@@ -1128,8 +1129,8 @@
     sp<Scheduler::ConnectionHandle> mAppConnectionHandle;
     sp<Scheduler::ConnectionHandle> mSfConnectionHandle;
 
-    scheduler::RefreshRateConfigs mRefreshRateConfigs;
-    scheduler::RefreshRateStats mRefreshRateStats{mRefreshRateConfigs, *mTimeStats};
+    std::unique_ptr<scheduler::RefreshRateConfigs> mRefreshRateConfigs;
+    std::unique_ptr<scheduler::RefreshRateStats> mRefreshRateStats;
 
     // All configs are allowed if the set is empty.
     using DisplayConfigs = std::set<int32_t>;
diff --git a/services/surfaceflinger/SurfaceFlingerProperties.cpp b/services/surfaceflinger/SurfaceFlingerProperties.cpp
index 3eedb67..327e9bb 100644
--- a/services/surfaceflinger/SurfaceFlingerProperties.cpp
+++ b/services/surfaceflinger/SurfaceFlingerProperties.cpp
@@ -218,6 +218,14 @@
     return static_cast<int32_t>(defaultValue);
 }
 
+bool refresh_rate_switching(bool defaultValue) {
+    auto temp = SurfaceFlingerProperties::refresh_rate_switching();
+    if (temp.has_value()) {
+        return *temp;
+    }
+    return defaultValue;
+}
+
 int32_t set_idle_timer_ms(int32_t defaultValue) {
     auto temp = SurfaceFlingerProperties::set_idle_timer_ms();
     if (temp.has_value()) {
diff --git a/services/surfaceflinger/SurfaceFlingerProperties.h b/services/surfaceflinger/SurfaceFlingerProperties.h
index 68986f7..ac35029 100644
--- a/services/surfaceflinger/SurfaceFlingerProperties.h
+++ b/services/surfaceflinger/SurfaceFlingerProperties.h
@@ -70,6 +70,8 @@
 int32_t wcg_composition_pixel_format(
         android::hardware::graphics::common::V1_2::PixelFormat defaultValue);
 
+bool refresh_rate_switching(bool defaultValue);
+
 int32_t set_idle_timer_ms(int32_t defaultValue);
 
 int32_t set_touch_timer_ms(int32_t defaultValue);
diff --git a/services/surfaceflinger/sysprop/SurfaceFlingerProperties.sysprop b/services/surfaceflinger/sysprop/SurfaceFlingerProperties.sysprop
index c77137a..b7a909d 100644
--- a/services/surfaceflinger/sysprop/SurfaceFlingerProperties.sysprop
+++ b/services/surfaceflinger/sysprop/SurfaceFlingerProperties.sysprop
@@ -15,7 +15,7 @@
 module: "android.sysprop.SurfaceFlingerProperties"
 owner: Platform
 
-# The following two propertiess define (respectively):
+# The following two properties define (respectively):
 #
 # - The phase offset between hardware vsync and when apps are woken up by the
 #   Choreographer callback
@@ -287,6 +287,18 @@
     prop_name: "ro.surface_flinger.display_primary_white"
 }
 
+# refreshRateSwitching indicates whether SurfaceFlinger should use refresh rate
+# switching on the device, e.g. to switch between 60 and 90 Hz. The settings
+# below that are related to refresh rate switching will only have an effect if
+# refresh_rate_switching is enabled.
+prop {
+    api_name: "refresh_rate_switching"
+    type: Boolean
+    scope: System
+    access: Readonly
+    prop_name: "ro.surface_flinger.refresh_rate_switching"
+}
+
 # setIdleTimerMs indicates what is considered a timeout in milliseconds for Scheduler. This value is
 # used by the Scheduler to trigger inactivity callbacks that will switch the display to a lower
 # refresh rate. Setting this property to 0 means there is no timer.
diff --git a/services/surfaceflinger/sysprop/api/system-current.txt b/services/surfaceflinger/sysprop/api/system-current.txt
index 794c1d6..f26ad16 100644
--- a/services/surfaceflinger/sysprop/api/system-current.txt
+++ b/services/surfaceflinger/sysprop/api/system-current.txt
@@ -16,6 +16,7 @@
     method public static java.util.Optional<java.lang.Long> max_virtual_display_dimension();
     method public static java.util.Optional<java.lang.Long> present_time_offset_from_vsync_ns();
     method public static java.util.Optional<android.sysprop.SurfaceFlingerProperties.primary_display_orientation_values> primary_display_orientation();
+    method public static java.util.Optional<java.lang.Boolean> refresh_rate_switching();
     method public static java.util.Optional<java.lang.Boolean> running_without_sync_framework();
     method public static java.util.Optional<java.lang.Integer> set_display_power_timer_ms();
     method public static java.util.Optional<java.lang.Integer> set_idle_timer_ms();
diff --git a/services/surfaceflinger/tests/unittests/CompositionTest.cpp b/services/surfaceflinger/tests/unittests/CompositionTest.cpp
index 4f8ed1a..57df9a2 100644
--- a/services/surfaceflinger/tests/unittests/CompositionTest.cpp
+++ b/services/surfaceflinger/tests/unittests/CompositionTest.cpp
@@ -125,7 +125,7 @@
     }
 
     void setupScheduler() {
-        mScheduler = new TestableScheduler(mFlinger.mutableRefreshRateConfigs());
+        mScheduler = new TestableScheduler(*mFlinger.mutableRefreshRateConfigs());
         mScheduler->mutableEventControlThread().reset(mEventControlThread);
         mScheduler->mutablePrimaryDispSync().reset(mPrimaryDispSync);
         EXPECT_CALL(*mEventThread.get(), registerDisplayEventConnection(_));
diff --git a/services/surfaceflinger/tests/unittests/DisplayTransactionTest.cpp b/services/surfaceflinger/tests/unittests/DisplayTransactionTest.cpp
index 5f58e7d..f40996e 100644
--- a/services/surfaceflinger/tests/unittests/DisplayTransactionTest.cpp
+++ b/services/surfaceflinger/tests/unittests/DisplayTransactionTest.cpp
@@ -29,6 +29,7 @@
 #include <ui/DebugUtils.h>
 
 #include "DisplayIdentificationTest.h"
+#include "Scheduler/RefreshRateConfigs.h"
 #include "TestableScheduler.h"
 #include "TestableSurfaceFlinger.h"
 #include "mock/DisplayHardware/MockComposer.h"
@@ -179,7 +180,16 @@
 }
 
 void DisplayTransactionTest::setupScheduler() {
-    mScheduler = new TestableScheduler(mFlinger.mutableRefreshRateConfigs());
+    std::vector<scheduler::RefreshRateConfigs::InputConfig> configs{{/*hwcId=*/0, 16666667}};
+    mFlinger.mutableRefreshRateConfigs() =
+            std::make_unique<scheduler::RefreshRateConfigs>(/*refreshRateSwitching=*/false, configs,
+                                                            /*currentConfig=*/0);
+    mFlinger.mutableRefreshRateStats() =
+            std::make_unique<scheduler::RefreshRateStats>(*mFlinger.mutableRefreshRateConfigs(),
+                                                          *mFlinger.mutableTimeStats(),
+                                                          /*currentConfig=*/0,
+                                                          /*powerMode=*/HWC_POWER_MODE_OFF);
+    mScheduler = new TestableScheduler(*mFlinger.mutableRefreshRateConfigs());
     mScheduler->mutableEventControlThread().reset(mEventControlThread);
     mScheduler->mutablePrimaryDispSync().reset(mPrimaryDispSync);
     EXPECT_CALL(*mEventThread, registerDisplayEventConnection(_));
diff --git a/services/surfaceflinger/tests/unittests/RefreshRateConfigsTest.cpp b/services/surfaceflinger/tests/unittests/RefreshRateConfigsTest.cpp
index 5067fe8..f315a8a 100644
--- a/services/surfaceflinger/tests/unittests/RefreshRateConfigsTest.cpp
+++ b/services/surfaceflinger/tests/unittests/RefreshRateConfigsTest.cpp
@@ -23,7 +23,6 @@
 
 #include "DisplayHardware/HWC2.h"
 #include "Scheduler/RefreshRateConfigs.h"
-#include "mock/DisplayHardware/MockDisplay.h"
 
 using namespace std::chrono_literals;
 using testing::_;
@@ -50,9 +49,8 @@
         ASSERT_EQ(left.configId, right.configId);
         ASSERT_EQ(left.name, right.name);
         ASSERT_EQ(left.fps, right.fps);
+        ASSERT_EQ(left.vsyncPeriod, right.vsyncPeriod);
     }
-
-    RefreshRateConfigs mConfigs;
 };
 
 RefreshRateConfigsTest::RefreshRateConfigsTest() {
@@ -71,101 +69,39 @@
 /* ------------------------------------------------------------------------
  * Test cases
  */
-TEST_F(RefreshRateConfigsTest, zeroDeviceConfigs_storesPowerSavingConfig) {
-    std::vector<std::shared_ptr<const HWC2::Display::Config>> displayConfigs;
-    mConfigs.populate(displayConfigs);
-
-    // We always store a configuration for screen off.
-    const auto& rates = mConfigs.getRefreshRates();
-    ASSERT_EQ(1, rates.size());
-    const auto& powerSavingRate = rates.find(RefreshRateType::POWER_SAVING);
-    ASSERT_NE(rates.end(), powerSavingRate);
-    ASSERT_EQ(rates.end(), rates.find(RefreshRateType::PERFORMANCE));
-    ASSERT_EQ(rates.end(), rates.find(RefreshRateType::DEFAULT));
-
-    RefreshRate expectedConfig =
-            RefreshRate{SCREEN_OFF_CONFIG_ID, "ScreenOff", 0, HWC2_SCREEN_OFF_CONFIG_ID};
-    assertRatesEqual(expectedConfig, *powerSavingRate->second);
-
-    ASSERT_TRUE(mConfigs.getRefreshRate(RefreshRateType::POWER_SAVING));
-    assertRatesEqual(expectedConfig, *mConfigs.getRefreshRate(RefreshRateType::POWER_SAVING));
-    ASSERT_FALSE(mConfigs.getRefreshRate(RefreshRateType::PERFORMANCE));
-    ASSERT_FALSE(mConfigs.getRefreshRate(RefreshRateType::DEFAULT));
-
-    // Sanity check that getRefreshRate() does not modify the underlying configs.
-    ASSERT_EQ(1, mConfigs.getRefreshRates().size());
+TEST_F(RefreshRateConfigsTest, oneDeviceConfig_isRejected) {
+    std::vector<RefreshRateConfigs::InputConfig> configs{{HWC2_CONFIG_ID_60, VSYNC_60}};
+    auto refreshRateConfigs =
+            std::make_unique<RefreshRateConfigs>(/*refreshRateSwitching=*/true, configs,
+                                                 /*currentConfig=*/0);
+    ASSERT_FALSE(refreshRateConfigs->refreshRateSwitchingSupported());
 }
 
-TEST_F(RefreshRateConfigsTest, oneDeviceConfig_storesDefaultConfig) {
-    auto display = new Hwc2::mock::Display();
-    std::vector<std::shared_ptr<const HWC2::Display::Config>> displayConfigs;
-    auto config60 = HWC2::Display::Config::Builder(*display, CONFIG_ID_60);
-    config60.setVsyncPeriod(VSYNC_60);
-    displayConfigs.push_back(config60.build());
-    mConfigs.populate(displayConfigs);
+TEST_F(RefreshRateConfigsTest, twoDeviceConfigs_storesFullRefreshRateMap) {
+    std::vector<RefreshRateConfigs::InputConfig> configs{{HWC2_CONFIG_ID_60, VSYNC_60},
+                                                         {HWC2_CONFIG_ID_90, VSYNC_90}};
+    auto refreshRateConfigs =
+            std::make_unique<RefreshRateConfigs>(/*refreshRateSwitching=*/true, configs,
+                                                 /*currentConfig=*/0);
 
-    const auto& rates = mConfigs.getRefreshRates();
+    ASSERT_TRUE(refreshRateConfigs->refreshRateSwitchingSupported());
+    const auto& rates = refreshRateConfigs->getRefreshRateMap();
     ASSERT_EQ(2, rates.size());
-    const auto& powerSavingRate = rates.find(RefreshRateType::POWER_SAVING);
-    const auto& defaultRate = rates.find(RefreshRateType::DEFAULT);
-    ASSERT_NE(rates.end(), powerSavingRate);
-    ASSERT_NE(rates.end(), defaultRate);
-    ASSERT_EQ(rates.end(), rates.find(RefreshRateType::PERFORMANCE));
-
-    RefreshRate expectedPowerSavingConfig =
-            RefreshRate{SCREEN_OFF_CONFIG_ID, "ScreenOff", 0, HWC2_SCREEN_OFF_CONFIG_ID};
-    assertRatesEqual(expectedPowerSavingConfig, *powerSavingRate->second);
-    RefreshRate expectedDefaultConfig = RefreshRate{CONFIG_ID_60, "60fps", 60, HWC2_CONFIG_ID_60};
-    assertRatesEqual(expectedDefaultConfig, *defaultRate->second);
-
-    ASSERT_TRUE(mConfigs.getRefreshRate(RefreshRateType::POWER_SAVING));
-    assertRatesEqual(expectedPowerSavingConfig,
-                     *mConfigs.getRefreshRate(RefreshRateType::POWER_SAVING));
-    ASSERT_TRUE(mConfigs.getRefreshRate(RefreshRateType::DEFAULT));
-    assertRatesEqual(expectedDefaultConfig, *mConfigs.getRefreshRate(RefreshRateType::DEFAULT));
-    ASSERT_FALSE(mConfigs.getRefreshRate(RefreshRateType::PERFORMANCE));
-
-    // Sanity check that getRefreshRate() does not modify the underlying configs.
-    ASSERT_EQ(2, mConfigs.getRefreshRates().size());
-}
-
-TEST_F(RefreshRateConfigsTest, twoDeviceConfigs_storesPerformanceConfig) {
-    auto display = new Hwc2::mock::Display();
-    std::vector<std::shared_ptr<const HWC2::Display::Config>> displayConfigs;
-    auto config60 = HWC2::Display::Config::Builder(*display, CONFIG_ID_60);
-    config60.setVsyncPeriod(VSYNC_60);
-    displayConfigs.push_back(config60.build());
-    auto config90 = HWC2::Display::Config::Builder(*display, CONFIG_ID_90);
-    config90.setVsyncPeriod(VSYNC_90);
-    displayConfigs.push_back(config90.build());
-    mConfigs.populate(displayConfigs);
-
-    const auto& rates = mConfigs.getRefreshRates();
-    ASSERT_EQ(3, rates.size());
-    const auto& powerSavingRate = rates.find(RefreshRateType::POWER_SAVING);
     const auto& defaultRate = rates.find(RefreshRateType::DEFAULT);
     const auto& performanceRate = rates.find(RefreshRateType::PERFORMANCE);
-    ASSERT_NE(rates.end(), powerSavingRate);
     ASSERT_NE(rates.end(), defaultRate);
     ASSERT_NE(rates.end(), performanceRate);
 
-    RefreshRate expectedPowerSavingConfig =
-            RefreshRate{SCREEN_OFF_CONFIG_ID, "ScreenOff", 0, HWC2_SCREEN_OFF_CONFIG_ID};
-    assertRatesEqual(expectedPowerSavingConfig, *powerSavingRate->second);
-    RefreshRate expectedDefaultConfig = RefreshRate{CONFIG_ID_60, "60fps", 60, HWC2_CONFIG_ID_60};
-    assertRatesEqual(expectedDefaultConfig, *defaultRate->second);
-    RefreshRate expectedPerformanceConfig =
-            RefreshRate{CONFIG_ID_90, "90fps", 90, HWC2_CONFIG_ID_90};
-    assertRatesEqual(expectedPerformanceConfig, *performanceRate->second);
+    RefreshRate expectedDefaultConfig = {CONFIG_ID_60, "60fps", 60, VSYNC_60, HWC2_CONFIG_ID_60};
+    assertRatesEqual(expectedDefaultConfig, defaultRate->second);
+    RefreshRate expectedPerformanceConfig = {CONFIG_ID_90, "90fps", 90, VSYNC_90,
+                                             HWC2_CONFIG_ID_90};
+    assertRatesEqual(expectedPerformanceConfig, performanceRate->second);
 
-    ASSERT_TRUE(mConfigs.getRefreshRate(RefreshRateType::POWER_SAVING));
-    assertRatesEqual(expectedPowerSavingConfig,
-                     *mConfigs.getRefreshRate(RefreshRateType::POWER_SAVING));
-    ASSERT_TRUE(mConfigs.getRefreshRate(RefreshRateType::DEFAULT));
-    assertRatesEqual(expectedDefaultConfig, *mConfigs.getRefreshRate(RefreshRateType::DEFAULT));
-    ASSERT_TRUE(mConfigs.getRefreshRate(RefreshRateType::PERFORMANCE));
+    assertRatesEqual(expectedDefaultConfig,
+                     refreshRateConfigs->getRefreshRateFromType(RefreshRateType::DEFAULT));
     assertRatesEqual(expectedPerformanceConfig,
-                     *mConfigs.getRefreshRate(RefreshRateType::PERFORMANCE));
+                     refreshRateConfigs->getRefreshRateFromType(RefreshRateType::PERFORMANCE));
 }
 } // namespace
 } // namespace scheduler
diff --git a/services/surfaceflinger/tests/unittests/RefreshRateStatsTest.cpp b/services/surfaceflinger/tests/unittests/RefreshRateStatsTest.cpp
index 411ec61..cec0b32 100644
--- a/services/surfaceflinger/tests/unittests/RefreshRateStatsTest.cpp
+++ b/services/surfaceflinger/tests/unittests/RefreshRateStatsTest.cpp
@@ -22,7 +22,6 @@
 #include <thread>
 
 #include "Scheduler/RefreshRateStats.h"
-#include "mock/DisplayHardware/MockDisplay.h"
 #include "mock/MockTimeStats.h"
 
 using namespace std::chrono_literals;
@@ -42,9 +41,18 @@
     RefreshRateStatsTest();
     ~RefreshRateStatsTest();
 
+    void init(const std::vector<RefreshRateConfigs::InputConfig>& configs) {
+        mRefreshRateConfigs = std::make_unique<RefreshRateConfigs>(
+                /*refreshRateSwitching=*/true, configs, /*currentConfig=*/0);
+        mRefreshRateStats =
+                std::make_unique<RefreshRateStats>(*mRefreshRateConfigs, mTimeStats,
+                                                   /*currentConfig=*/0,
+                                                   /*currentPowerMode=*/HWC_POWER_MODE_OFF);
+    }
+
     mock::TimeStats mTimeStats;
-    RefreshRateConfigs mRefreshRateConfigs;
-    RefreshRateStats mRefreshRateStats{mRefreshRateConfigs, mTimeStats};
+    std::unique_ptr<RefreshRateConfigs> mRefreshRateConfigs;
+    std::unique_ptr<RefreshRateStats> mRefreshRateStats;
 };
 
 RefreshRateStatsTest::RefreshRateStatsTest() {
@@ -63,63 +71,46 @@
 /* ------------------------------------------------------------------------
  * Test cases
  */
-TEST_F(RefreshRateStatsTest, canCreateAndDestroyTest) {
-    std::vector<std::shared_ptr<const HWC2::Display::Config>> configs;
-    mRefreshRateConfigs.populate(configs);
-
-    // There is one default config, so the refresh rates should have one item.
-    EXPECT_EQ(1, mRefreshRateStats.getTotalTimes().size());
-}
-
 TEST_F(RefreshRateStatsTest, oneConfigTest) {
-    auto display = new Hwc2::mock::Display();
-
-    auto config = HWC2::Display::Config::Builder(*display, CONFIG_ID_90);
-    config.setVsyncPeriod(VSYNC_90);
-    std::vector<std::shared_ptr<const HWC2::Display::Config>> configs;
-    configs.push_back(config.build());
-
-    mRefreshRateConfigs.populate(configs);
+    init({{CONFIG_ID_90, VSYNC_90}});
 
     EXPECT_CALL(mTimeStats, recordRefreshRate(0, _)).Times(AtLeast(1));
     EXPECT_CALL(mTimeStats, recordRefreshRate(90, _)).Times(AtLeast(1));
 
-    std::unordered_map<std::string, int64_t> times = mRefreshRateStats.getTotalTimes();
-    EXPECT_EQ(2, times.size());
+    std::unordered_map<std::string, int64_t> times = mRefreshRateStats->getTotalTimes();
+    ASSERT_EQ(1, times.size());
     EXPECT_NE(0u, times.count("ScreenOff"));
-    EXPECT_EQ(1u, times.count("90fps"));
-    EXPECT_EQ(0, times["90fps"]);
     // Setting up tests on mobile harness can be flaky with time passing, so testing for
     // exact time changes can result in flaxy numbers. To avoid that remember old
     // numbers to make sure the correct values are increasing in the next test.
     int screenOff = times["ScreenOff"];
-    int ninety = times["90fps"];
 
     // Screen is off by default.
     std::this_thread::sleep_for(std::chrono::milliseconds(2));
-    times = mRefreshRateStats.getTotalTimes();
+    times = mRefreshRateStats->getTotalTimes();
     EXPECT_LT(screenOff, times["ScreenOff"]);
-    EXPECT_EQ(0, times["90fps"]);
+    EXPECT_EQ(0u, times.count("90fps"));
 
-    mRefreshRateStats.setConfigMode(CONFIG_ID_90);
-    mRefreshRateStats.setPowerMode(HWC_POWER_MODE_NORMAL);
-    screenOff = mRefreshRateStats.getTotalTimes()["ScreenOff"];
+    mRefreshRateStats->setConfigMode(CONFIG_ID_90);
+    mRefreshRateStats->setPowerMode(HWC_POWER_MODE_NORMAL);
+    screenOff = mRefreshRateStats->getTotalTimes()["ScreenOff"];
     std::this_thread::sleep_for(std::chrono::milliseconds(2));
-    times = mRefreshRateStats.getTotalTimes();
+    times = mRefreshRateStats->getTotalTimes();
     EXPECT_EQ(screenOff, times["ScreenOff"]);
-    EXPECT_LT(ninety, times["90fps"]);
+    ASSERT_EQ(1u, times.count("90fps"));
+    EXPECT_LT(0, times["90fps"]);
 
-    mRefreshRateStats.setPowerMode(HWC_POWER_MODE_DOZE);
-    ninety = mRefreshRateStats.getTotalTimes()["90fps"];
+    mRefreshRateStats->setPowerMode(HWC_POWER_MODE_DOZE);
+    int ninety = mRefreshRateStats->getTotalTimes()["90fps"];
     std::this_thread::sleep_for(std::chrono::milliseconds(2));
-    times = mRefreshRateStats.getTotalTimes();
+    times = mRefreshRateStats->getTotalTimes();
     EXPECT_LT(screenOff, times["ScreenOff"]);
     EXPECT_EQ(ninety, times["90fps"]);
 
-    mRefreshRateStats.setConfigMode(CONFIG_ID_90);
-    screenOff = mRefreshRateStats.getTotalTimes()["ScreenOff"];
+    mRefreshRateStats->setConfigMode(CONFIG_ID_90);
+    screenOff = mRefreshRateStats->getTotalTimes()["ScreenOff"];
     std::this_thread::sleep_for(std::chrono::milliseconds(2));
-    times = mRefreshRateStats.getTotalTimes();
+    times = mRefreshRateStats->getTotalTimes();
     // Because the power mode is not HWC_POWER_MODE_NORMAL, switching the config
     // does not update refresh rates that come from the config.
     EXPECT_LT(screenOff, times["ScreenOff"]);
@@ -127,93 +118,75 @@
 }
 
 TEST_F(RefreshRateStatsTest, twoConfigsTest) {
-    auto display = new Hwc2::mock::Display();
-
-    auto config90 = HWC2::Display::Config::Builder(*display, CONFIG_ID_90);
-    config90.setVsyncPeriod(VSYNC_90);
-    std::vector<std::shared_ptr<const HWC2::Display::Config>> configs;
-    configs.push_back(config90.build());
-
-    auto config60 = HWC2::Display::Config::Builder(*display, CONFIG_ID_60);
-    config60.setVsyncPeriod(VSYNC_60);
-    configs.push_back(config60.build());
-
-    mRefreshRateConfigs.populate(configs);
+    init({{CONFIG_ID_90, VSYNC_90}, {CONFIG_ID_60, VSYNC_60}});
 
     EXPECT_CALL(mTimeStats, recordRefreshRate(0, _)).Times(AtLeast(1));
     EXPECT_CALL(mTimeStats, recordRefreshRate(60, _)).Times(AtLeast(1));
     EXPECT_CALL(mTimeStats, recordRefreshRate(90, _)).Times(AtLeast(1));
 
-    std::unordered_map<std::string, int64_t> times = mRefreshRateStats.getTotalTimes();
-    EXPECT_EQ(3, times.size());
+    std::unordered_map<std::string, int64_t> times = mRefreshRateStats->getTotalTimes();
+    ASSERT_EQ(1, times.size());
     EXPECT_NE(0u, times.count("ScreenOff"));
-    EXPECT_EQ(1u, times.count("60fps"));
-    EXPECT_EQ(0, times["60fps"]);
-    EXPECT_EQ(1u, times.count("90fps"));
-    EXPECT_EQ(0, times["90fps"]);
     // Setting up tests on mobile harness can be flaky with time passing, so testing for
     // exact time changes can result in flaxy numbers. To avoid that remember old
     // numbers to make sure the correct values are increasing in the next test.
     int screenOff = times["ScreenOff"];
-    int sixty = times["60fps"];
-    int ninety = times["90fps"];
 
     // Screen is off by default.
     std::this_thread::sleep_for(std::chrono::milliseconds(2));
-    times = mRefreshRateStats.getTotalTimes();
+    times = mRefreshRateStats->getTotalTimes();
     EXPECT_LT(screenOff, times["ScreenOff"]);
-    EXPECT_EQ(sixty, times["60fps"]);
-    EXPECT_EQ(ninety, times["90fps"]);
 
-    mRefreshRateStats.setConfigMode(CONFIG_ID_90);
-    mRefreshRateStats.setPowerMode(HWC_POWER_MODE_NORMAL);
-    screenOff = mRefreshRateStats.getTotalTimes()["ScreenOff"];
+    mRefreshRateStats->setConfigMode(CONFIG_ID_90);
+    mRefreshRateStats->setPowerMode(HWC_POWER_MODE_NORMAL);
+    screenOff = mRefreshRateStats->getTotalTimes()["ScreenOff"];
     std::this_thread::sleep_for(std::chrono::milliseconds(2));
-    times = mRefreshRateStats.getTotalTimes();
+    times = mRefreshRateStats->getTotalTimes();
     EXPECT_EQ(screenOff, times["ScreenOff"]);
-    EXPECT_EQ(sixty, times["60fps"]);
-    EXPECT_LT(ninety, times["90fps"]);
+    ASSERT_EQ(1u, times.count("90fps"));
+    EXPECT_LT(0, times["90fps"]);
 
     // When power mode is normal, time for configs updates.
-    mRefreshRateStats.setConfigMode(CONFIG_ID_60);
-    ninety = mRefreshRateStats.getTotalTimes()["90fps"];
+    mRefreshRateStats->setConfigMode(CONFIG_ID_60);
+    int ninety = mRefreshRateStats->getTotalTimes()["90fps"];
     std::this_thread::sleep_for(std::chrono::milliseconds(2));
-    times = mRefreshRateStats.getTotalTimes();
+    times = mRefreshRateStats->getTotalTimes();
     EXPECT_EQ(screenOff, times["ScreenOff"]);
     EXPECT_EQ(ninety, times["90fps"]);
-    EXPECT_LT(sixty, times["60fps"]);
+    ASSERT_EQ(1u, times.count("60fps"));
+    EXPECT_LT(0, times["60fps"]);
 
-    mRefreshRateStats.setConfigMode(CONFIG_ID_90);
-    sixty = mRefreshRateStats.getTotalTimes()["60fps"];
+    mRefreshRateStats->setConfigMode(CONFIG_ID_90);
+    int sixty = mRefreshRateStats->getTotalTimes()["60fps"];
     std::this_thread::sleep_for(std::chrono::milliseconds(2));
-    times = mRefreshRateStats.getTotalTimes();
+    times = mRefreshRateStats->getTotalTimes();
     EXPECT_EQ(screenOff, times["ScreenOff"]);
     EXPECT_LT(ninety, times["90fps"]);
     EXPECT_EQ(sixty, times["60fps"]);
 
-    mRefreshRateStats.setConfigMode(CONFIG_ID_60);
-    ninety = mRefreshRateStats.getTotalTimes()["90fps"];
+    mRefreshRateStats->setConfigMode(CONFIG_ID_60);
+    ninety = mRefreshRateStats->getTotalTimes()["90fps"];
     std::this_thread::sleep_for(std::chrono::milliseconds(2));
-    times = mRefreshRateStats.getTotalTimes();
+    times = mRefreshRateStats->getTotalTimes();
     EXPECT_EQ(screenOff, times["ScreenOff"]);
     EXPECT_EQ(ninety, times["90fps"]);
     EXPECT_LT(sixty, times["60fps"]);
 
     // Because the power mode is not HWC_POWER_MODE_NORMAL, switching the config
     // does not update refresh rates that come from the config.
-    mRefreshRateStats.setPowerMode(HWC_POWER_MODE_DOZE);
-    mRefreshRateStats.setConfigMode(CONFIG_ID_90);
-    sixty = mRefreshRateStats.getTotalTimes()["60fps"];
+    mRefreshRateStats->setPowerMode(HWC_POWER_MODE_DOZE);
+    mRefreshRateStats->setConfigMode(CONFIG_ID_90);
+    sixty = mRefreshRateStats->getTotalTimes()["60fps"];
     std::this_thread::sleep_for(std::chrono::milliseconds(2));
-    times = mRefreshRateStats.getTotalTimes();
+    times = mRefreshRateStats->getTotalTimes();
     EXPECT_LT(screenOff, times["ScreenOff"]);
     EXPECT_EQ(ninety, times["90fps"]);
     EXPECT_EQ(sixty, times["60fps"]);
 
-    mRefreshRateStats.setConfigMode(CONFIG_ID_60);
-    screenOff = mRefreshRateStats.getTotalTimes()["ScreenOff"];
+    mRefreshRateStats->setConfigMode(CONFIG_ID_60);
+    screenOff = mRefreshRateStats->getTotalTimes()["ScreenOff"];
     std::this_thread::sleep_for(std::chrono::milliseconds(2));
-    times = mRefreshRateStats.getTotalTimes();
+    times = mRefreshRateStats->getTotalTimes();
     EXPECT_LT(screenOff, times["ScreenOff"]);
     EXPECT_EQ(ninety, times["90fps"]);
     EXPECT_EQ(sixty, times["60fps"]);
diff --git a/services/surfaceflinger/tests/unittests/SchedulerTest.cpp b/services/surfaceflinger/tests/unittests/SchedulerTest.cpp
index 740115e..571fdfd 100644
--- a/services/surfaceflinger/tests/unittests/SchedulerTest.cpp
+++ b/services/surfaceflinger/tests/unittests/SchedulerTest.cpp
@@ -3,13 +3,13 @@
 
 #include <gmock/gmock.h>
 #include <gtest/gtest.h>
-
 #include <log/log.h>
 
 #include <mutex>
 
 #include "Scheduler/EventControlThread.h"
 #include "Scheduler/EventThread.h"
+#include "Scheduler/RefreshRateConfigs.h"
 #include "Scheduler/Scheduler.h"
 #include "mock/MockEventThread.h"
 
@@ -34,7 +34,7 @@
         MOCK_METHOD0(requestNextVsync, void());
     };
 
-    scheduler::RefreshRateConfigs mRefreshRateConfigs;
+    std::unique_ptr<scheduler::RefreshRateConfigs> mRefreshRateConfigs;
 
     /**
      * This mock Scheduler class uses implementation of mock::EventThread but keeps everything else
@@ -73,9 +73,14 @@
             ::testing::UnitTest::GetInstance()->current_test_info();
     ALOGD("**** Setting up for %s.%s\n", test_info->test_case_name(), test_info->name());
 
+    std::vector<scheduler::RefreshRateConfigs::InputConfig> configs{{/*hwcId=*/0, 16666667}};
+    mRefreshRateConfigs =
+            std::make_unique<scheduler::RefreshRateConfigs>(/*refreshRateSwitching=*/false, configs,
+                                                            /*currentConfig=*/0);
+
     std::unique_ptr<mock::EventThread> eventThread = std::make_unique<mock::EventThread>();
     mEventThread = eventThread.get();
-    mScheduler = std::make_unique<MockScheduler>(mRefreshRateConfigs, std::move(eventThread));
+    mScheduler = std::make_unique<MockScheduler>(*mRefreshRateConfigs, std::move(eventThread));
     EXPECT_CALL(*mEventThread, registerDisplayEventConnection(_)).WillOnce(Return(0));
 
     mEventThreadConnection = new MockEventThreadConnection(mEventThread);
@@ -85,7 +90,7 @@
     EXPECT_CALL(*mEventThread, createEventConnection(_, _))
             .WillRepeatedly(Return(mEventThreadConnection));
 
-    mConnectionHandle = mScheduler->createConnection("appConnection", 16, 16, ResyncCallback(),
+    mConnectionHandle = mScheduler->createConnection("appConnection", 16, 16,
                                                      impl::EventThread::InterceptVSyncsCallback());
     EXPECT_TRUE(mConnectionHandle != nullptr);
 }
@@ -107,7 +112,7 @@
     sp<IDisplayEventConnection> returnedValue;
     ASSERT_NO_FATAL_FAILURE(
             returnedValue =
-                    mScheduler->createDisplayEventConnection(nullptr, ResyncCallback(),
+                    mScheduler->createDisplayEventConnection(nullptr,
                                                              ISurfaceComposer::
                                                                      eConfigChangedSuppress));
     EXPECT_TRUE(returnedValue == nullptr);
@@ -130,7 +135,7 @@
     sp<IDisplayEventConnection> returnedValue;
     ASSERT_NO_FATAL_FAILURE(
             returnedValue =
-                    mScheduler->createDisplayEventConnection(connectionHandle, ResyncCallback(),
+                    mScheduler->createDisplayEventConnection(connectionHandle,
                                                              ISurfaceComposer::
                                                                      eConfigChangedSuppress));
     EXPECT_TRUE(returnedValue == nullptr);
@@ -161,7 +166,7 @@
     sp<IDisplayEventConnection> returnedValue;
     ASSERT_NO_FATAL_FAILURE(
             returnedValue =
-                    mScheduler->createDisplayEventConnection(mConnectionHandle, ResyncCallback(),
+                    mScheduler->createDisplayEventConnection(mConnectionHandle,
                                                              ISurfaceComposer::
                                                                      eConfigChangedSuppress));
     EXPECT_TRUE(returnedValue != nullptr);
diff --git a/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h b/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h
index 64d34ee..1c1b020 100644
--- a/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h
+++ b/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h
@@ -32,11 +32,11 @@
 #include "Layer.h"
 #include "NativeWindowSurface.h"
 #include "Scheduler/MessageQueue.h"
+#include "Scheduler/RefreshRateConfigs.h"
 #include "StartPropertySetThread.h"
 #include "SurfaceFlinger.h"
 #include "SurfaceFlingerFactory.h"
 #include "SurfaceInterceptor.h"
-
 #include "TimeStats/TimeStats.h"
 
 namespace android {
@@ -342,6 +342,8 @@
     auto& mutableAppConnectionHandle() { return mFlinger->mAppConnectionHandle; }
     auto& mutableSfConnectionHandle() { return mFlinger->mSfConnectionHandle; }
     auto& mutableRefreshRateConfigs() { return mFlinger->mRefreshRateConfigs; }
+    auto& mutableRefreshRateStats() { return mFlinger->mRefreshRateStats; }
+    auto& mutableTimeStats() { return mFlinger->mTimeStats; }
 
     ~TestableSurfaceFlinger() {
         // All these pointer and container clears help ensure that GMock does