Merge "Add wakeup attribution to trace" into udc-dev (4dd9366c) · Commits · e / os / android_frameworks_base

services/core/java/com/android/server/am/BatteryStatsService.java

+6 −0

Original line number	Diff line number	Diff line
		@@ -66,6 +66,7 @@ import android.os.Process;
		import android.os.RemoteException;
		import android.os.ServiceManager;
		import android.os.SystemClock;
		import android.os.Trace;
		import android.os.UserHandle;
		import android.os.WakeLockStats;
		import android.os.WorkSource;
		@@ -140,6 +141,7 @@ public final class BatteryStatsService extends IBatteryStats.Stub
		BatteryStatsImpl.EnergyStatsRetriever,
		Watchdog.Monitor {
		static final String TAG = "BatteryStatsService";
		static final String TRACE_TRACK_WAKEUP_REASON = "wakeup_reason";
		static final boolean DBG = false;
		private static final boolean BATTERY_USAGE_STORE_ENABLED = true;

		@@ -2482,6 +2484,10 @@ public final class BatteryStatsService extends IBatteryStats.Stub
		while ((reason = waitWakeup()) != null) {
		final long nowElapsed = SystemClock.elapsedRealtime();
		final long nowUptime = SystemClock.uptimeMillis();

		Trace.instantForTrack(Trace.TRACE_TAG_POWER, TRACE_TRACK_WAKEUP_REASON,
		nowElapsed + " " + reason);

		// Wait for the completion of pending works if there is any
		awaitCompletion();
		mCpuWakeupStats.noteWakeupTimeAndReason(nowElapsed, nowUptime, reason);

services/core/java/com/android/server/power/stats/CpuWakeupStats.java

+21 −2

Original line number	Diff line number	Diff line
		@@ -23,6 +23,7 @@ import static android.os.BatteryStatsInternal.CPU_WAKEUP_SUBSYSTEM_WIFI;
		import android.content.Context;
		import android.os.Handler;
		import android.os.HandlerExecutor;
		import android.os.Trace;
		import android.os.UserHandle;
		import android.provider.DeviceConfig;
		import android.util.IndentingPrintWriter;
		@@ -55,6 +56,7 @@ public class CpuWakeupStats {

		private static final String SUBSYSTEM_ALARM_STRING = "Alarm";
		private static final String SUBSYSTEM_ALARM_WIFI = "Wifi";
		private static final String TRACE_TRACK_WAKEUP_ATTRIBUTION = "wakeup_attribution";
		@VisibleForTesting
		static final long WAKEUP_REASON_HALF_WINDOW_MS = 500;
		private static final long WAKEUP_WRITE_DELAY_MS = TimeUnit.MINUTES.toMillis(2);
		@@ -94,13 +96,15 @@ public class CpuWakeupStats {
		return FrameworkStatsLog.KERNEL_WAKEUP_ATTRIBUTED__REASON__UNKNOWN;
		}

		private synchronized void logWakeupToStatsLog(Wakeup wakeupToLog) {
		private synchronized void logWakeupAttribution(Wakeup wakeupToLog) {
		if (ArrayUtils.isEmpty(wakeupToLog.mDevices)) {
		FrameworkStatsLog.write(FrameworkStatsLog.KERNEL_WAKEUP_ATTRIBUTED,
		FrameworkStatsLog.KERNEL_WAKEUP_ATTRIBUTED__TYPE__TYPE_UNKNOWN,
		FrameworkStatsLog.KERNEL_WAKEUP_ATTRIBUTED__REASON__UNKNOWN,
		null,
		wakeupToLog.mElapsedMillis);
		Trace.instantForTrack(Trace.TRACE_TAG_POWER, TRACE_TRACK_WAKEUP_ATTRIBUTION,
		wakeupToLog.mElapsedMillis + " --");
		return;
		}

		@@ -112,6 +116,9 @@ public class CpuWakeupStats {
		Slog.wtf(TAG, "Unexpected null attribution found for " + wakeupToLog);
		return;
		}

		final StringBuilder traceEventBuilder = new StringBuilder();

		for (int i = 0; i < wakeupAttribution.size(); i++) {
		final int subsystem = wakeupAttribution.keyAt(i);
		final SparseBooleanArray uidMap = wakeupAttribution.valueAt(i);
		@@ -132,7 +139,19 @@ public class CpuWakeupStats {
		subsystemToStatsReason(subsystem),
		uids,
		wakeupToLog.mElapsedMillis);

		if (Trace.isTagEnabled(Trace.TRACE_TAG_POWER)) {
		if (i == 0) {
		traceEventBuilder.append(wakeupToLog.mElapsedMillis + " ");
		}
		traceEventBuilder.append((subsystemToString(subsystem)));
		traceEventBuilder.append(":");
		traceEventBuilder.append(Arrays.toString(uids));
		traceEventBuilder.append(" ");
		}
		}
		Trace.instantForTrack(Trace.TRACE_TAG_POWER, TRACE_TRACK_WAKEUP_ATTRIBUTION,
		traceEventBuilder.toString().trim());
		}

		/** Notes a wakeup reason as reported by SuspendControlService to battery stats. */
		@@ -160,7 +179,7 @@ public class CpuWakeupStats {
		for (int i = lastIdx; i >= 0; i--) {
		mWakeupAttribution.removeAt(i);
		}
		mHandler.postDelayed(() -> logWakeupToStatsLog(parsedWakeup), WAKEUP_WRITE_DELAY_MS);
		mHandler.postDelayed(() -> logWakeupAttribution(parsedWakeup), WAKEUP_WRITE_DELAY_MS);
		}

		/** Notes a waking activity that could have potentially woken up the CPU. */