diff --git a/services/powermanager/Android.bp b/services/powermanager/Android.bp
index 8b16890..1f72e8b 100644
--- a/services/powermanager/Android.bp
+++ b/services/powermanager/Android.bp
@@ -19,6 +19,7 @@
         "PowerHalWrapper.cpp",
         "PowerSaveState.cpp",
         "Temperature.cpp",
+        "WorkDuration.cpp",
         "WorkSource.cpp",
         ":libpowermanager_aidl",
     ],
diff --git a/services/powermanager/WorkDuration.cpp b/services/powermanager/WorkDuration.cpp
new file mode 100644
index 0000000..ef723c2
--- /dev/null
+++ b/services/powermanager/WorkDuration.cpp
@@ -0,0 +1,51 @@
+/**
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "WorkDuration"
+
+#include <android/WorkDuration.h>
+#include <android/performance_hint.h>
+#include <binder/Parcel.h>
+#include <utils/Log.h>
+
+namespace android::os {
+
+WorkDuration::WorkDuration(int64_t startTimestampNanos, int64_t totalDurationNanos,
+                           int64_t cpuDurationNanos, int64_t gpuDurationNanos)
+      : workPeriodStartTimestampNanos(startTimestampNanos),
+        actualTotalDurationNanos(totalDurationNanos),
+        actualCpuDurationNanos(cpuDurationNanos),
+        actualGpuDurationNanos(gpuDurationNanos) {}
+
+status_t WorkDuration::writeToParcel(Parcel* parcel) const {
+    if (parcel == nullptr) {
+        ALOGE("%s: Null parcel", __func__);
+        return BAD_VALUE;
+    }
+
+    parcel->writeInt64(workPeriodStartTimestampNanos);
+    parcel->writeInt64(actualTotalDurationNanos);
+    parcel->writeInt64(actualCpuDurationNanos);
+    parcel->writeInt64(actualGpuDurationNanos);
+    parcel->writeInt64(timestampNanos);
+    return OK;
+}
+
+status_t WorkDuration::readFromParcel(const Parcel*) {
+    return INVALID_OPERATION;
+}
+
+} // namespace android::os
diff --git a/services/powermanager/include/android/WorkDuration.h b/services/powermanager/include/android/WorkDuration.h
new file mode 100644
index 0000000..99b5b8b
--- /dev/null
+++ b/services/powermanager/include/android/WorkDuration.h
@@ -0,0 +1,71 @@
+/**
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <binder/Parcelable.h>
+#include <math.h>
+
+struct AWorkDuration {};
+
+namespace android::os {
+
+/**
+ * C++ Parcelable version of {@link PerformanceHintManager.WorkDuration} that can be used in
+ * binder calls.
+ * This file needs to be kept in sync with the WorkDuration in
+ * frameworks/base/core/java/android/os/WorkDuration.java
+ */
+struct WorkDuration : AWorkDuration, android::Parcelable {
+    WorkDuration() = default;
+    ~WorkDuration() = default;
+
+    WorkDuration(int64_t workPeriodStartTimestampNanos, int64_t actualTotalDurationNanos,
+                 int64_t actualCpuDurationNanos, int64_t actualGpuDurationNanos);
+    status_t writeToParcel(Parcel* parcel) const override;
+    status_t readFromParcel(const Parcel* parcel) override;
+
+    inline bool equalsWithoutTimestamp(const WorkDuration& other) const {
+        return workPeriodStartTimestampNanos == other.workPeriodStartTimestampNanos &&
+                actualTotalDurationNanos == other.actualTotalDurationNanos &&
+                actualCpuDurationNanos == other.actualCpuDurationNanos &&
+                actualGpuDurationNanos == other.actualGpuDurationNanos;
+    }
+
+    bool operator==(const WorkDuration& other) const {
+        return timestampNanos == other.timestampNanos && equalsWithoutTimestamp(other);
+    }
+
+    bool operator!=(const WorkDuration& other) const { return !(*this == other); }
+
+    friend std::ostream& operator<<(std::ostream& os, const WorkDuration& workDuration) {
+        os << "{"
+           << "workPeriodStartTimestampNanos: " << workDuration.workPeriodStartTimestampNanos
+           << ", actualTotalDurationNanos: " << workDuration.actualTotalDurationNanos
+           << ", actualCpuDurationNanos: " << workDuration.actualCpuDurationNanos
+           << ", actualGpuDurationNanos: " << workDuration.actualGpuDurationNanos
+           << ", timestampNanos: " << workDuration.timestampNanos << "}";
+        return os;
+    }
+
+    int64_t workPeriodStartTimestampNanos;
+    int64_t actualTotalDurationNanos;
+    int64_t actualCpuDurationNanos;
+    int64_t actualGpuDurationNanos;
+    int64_t timestampNanos;
+};
+
+} // namespace android::os
diff --git a/services/surfaceflinger/DisplayHardware/PowerAdvisor.cpp b/services/surfaceflinger/DisplayHardware/PowerAdvisor.cpp
index f00ef67..e005ad3 100644
--- a/services/surfaceflinger/DisplayHardware/PowerAdvisor.cpp
+++ b/services/surfaceflinger/DisplayHardware/PowerAdvisor.cpp
@@ -251,7 +251,12 @@
     actualDuration = std::make_optional(*actualDuration + sTargetSafetyMargin);
     mActualDuration = actualDuration;
     WorkDuration duration;
+    duration.workPeriodStartTimestampNanos = mCommitStartTimes[0].ns();
+    // TODO(b/284324521): Correctly calculate total duration.
     duration.durationNanos = actualDuration->ns();
+    duration.cpuDurationNanos = actualDuration->ns();
+    // TODO(b/284324521): Calculate RenderEngine GPU time.
+    duration.gpuDurationNanos = 0;
     duration.timeStampNanos = TimePoint::now().ns();
     mHintSessionQueue.push_back(duration);