public abstract long getCpuPowerMaUs(int which);
/**
- * Returns the approximate cpu time (in milliseconds) spent at a certain CPU speed.
+ * Returns the approximate cpu time (in milliseconds) spent at a certain CPU speed for a
+ * given CPU cluster.
+ * @param cluster the index of the CPU cluster.
* @param step the index of the CPU speed. This is not the actual speed of the CPU.
* @param which one of STATS_SINCE_CHARGED, STATS_SINCE_UNPLUGGED, or STATS_CURRENT.
- * @see BatteryStats#getCpuSpeedSteps()
+ * @see PowerProfile.getNumCpuClusters()
+ * @see PowerProfile.getNumSpeedStepsInCpuCluster(int)
*/
- @Deprecated
- public abstract long getTimeAtCpuSpeed(int step, int which);
+ public abstract long getTimeAtCpuSpeed(int cluster, int step, int which);
public static abstract class Sensor {
/*
public abstract Map<String, ? extends Timer> getKernelWakelockStats();
- /** Returns the number of different speeds that the CPU can run at */
- public abstract int getCpuSpeedSteps();
-
public abstract void writeToParcelWithoutUids(Parcel out, int flags);
private final static void formatTimeRaw(StringBuilder out, long seconds) {
}
if (mCpuPowerCalculator == null) {
- mCpuPowerCalculator = new CpuPowerCalculator();
+ mCpuPowerCalculator = new CpuPowerCalculator(mPowerProfile);
}
mCpuPowerCalculator.reset();
private static final int MAGIC = 0xBA757475; // 'BATSTATS'
// Current on-disk Parcel version
- private static final int VERSION = 130 + (USE_OLD_HISTORY ? 1000 : 0);
+ private static final int VERSION = 131 + (USE_OLD_HISTORY ? 1000 : 0);
// Maximum number of items we will record in the history.
private static final int MAX_HISTORY_ITEMS = 2000;
// in to one common name.
private static final int MAX_WAKELOCKS_PER_UID = 100;
- private static int sNumSpeedSteps;
-
private final JournaledFile mFile;
public final AtomicFile mCheckinFile;
public final AtomicFile mDailyFile;
private final KernelWakelockStats mTmpWakelockStats = new KernelWakelockStats();
private final KernelUidCpuTimeReader mKernelUidCpuTimeReader = new KernelUidCpuTimeReader();
- private final KernelCpuSpeedReader mKernelCpuSpeedReader = new KernelCpuSpeedReader();
+ private KernelCpuSpeedReader[] mKernelCpuSpeedReaders;
public interface BatteryCallback {
public void batteryNeedsCpuUpdate();
LongSamplingCounter mUserCpuTime = new LongSamplingCounter(mOnBatteryTimeBase);
LongSamplingCounter mSystemCpuTime = new LongSamplingCounter(mOnBatteryTimeBase);
LongSamplingCounter mCpuPower = new LongSamplingCounter(mOnBatteryTimeBase);
- LongSamplingCounter[] mSpeedBins;
+ LongSamplingCounter[][] mCpuClusterSpeed;
/**
* The statistics we have collected for this uid's wake locks.
mWifiMulticastTimer = new StopwatchTimer(Uid.this, WIFI_MULTICAST_ENABLED,
mWifiMulticastTimers, mOnBatteryTimeBase);
mProcessStateTimer = new StopwatchTimer[NUM_PROCESS_STATE];
- mSpeedBins = new LongSamplingCounter[getCpuSpeedSteps()];
}
@Override
}
@Override
- public long getTimeAtCpuSpeed(int step, int which) {
- if (step >= 0 && step < mSpeedBins.length) {
- if (mSpeedBins[step] != null) {
- return mSpeedBins[step].getCountLocked(which);
+ public long getTimeAtCpuSpeed(int cluster, int step, int which) {
+ if (mCpuClusterSpeed != null) {
+ if (cluster >= 0 && cluster < mCpuClusterSpeed.length) {
+ final LongSamplingCounter[] cpuSpeeds = mCpuClusterSpeed[cluster];
+ if (cpuSpeeds != null) {
+ if (step >= 0 && step < cpuSpeeds.length) {
+ final LongSamplingCounter c = cpuSpeeds[step];
+ if (c != null) {
+ return c.getCountLocked(which);
+ }
+ }
+ }
}
}
return 0;
mUserCpuTime.reset(false);
mSystemCpuTime.reset(false);
mCpuPower.reset(false);
- for (int i = 0; i < mSpeedBins.length; i++) {
- LongSamplingCounter c = mSpeedBins[i];
- if (c != null) {
- c.reset(false);
+
+ if (mCpuClusterSpeed != null) {
+ for (LongSamplingCounter[] speeds : mCpuClusterSpeed) {
+ if (speeds != null) {
+ for (LongSamplingCounter speed : speeds) {
+ if (speed != null) {
+ speed.reset(false);
+ }
+ }
+ }
}
}
mUserCpuTime.detach();
mSystemCpuTime.detach();
mCpuPower.detach();
- for (int i = 0; i < mSpeedBins.length; i++) {
- LongSamplingCounter c = mSpeedBins[i];
- if (c != null) {
- c.detach();
+
+ if (mCpuClusterSpeed != null) {
+ for (LongSamplingCounter[] cpuSpeeds : mCpuClusterSpeed) {
+ if (cpuSpeeds != null) {
+ for (LongSamplingCounter c : cpuSpeeds) {
+ if (c != null) {
+ c.detach();
+ }
+ }
+ }
}
}
}
mSystemCpuTime.writeToParcel(out);
mCpuPower.writeToParcel(out);
- out.writeInt(mSpeedBins.length);
- for (int i = 0; i < mSpeedBins.length; i++) {
- LongSamplingCounter c = mSpeedBins[i];
- if (c != null) {
- out.writeInt(1);
- c.writeToParcel(out);
- } else {
- out.writeInt(0);
+ if (mCpuClusterSpeed != null) {
+ out.writeInt(1);
+ out.writeInt(mCpuClusterSpeed.length);
+ for (LongSamplingCounter[] cpuSpeeds : mCpuClusterSpeed) {
+ if (cpuSpeeds != null) {
+ out.writeInt(1);
+ out.writeInt(cpuSpeeds.length);
+ for (LongSamplingCounter c : cpuSpeeds) {
+ if (c != null) {
+ out.writeInt(1);
+ c.writeToParcel(out);
+ } else {
+ out.writeInt(0);
+ }
+ }
+ } else {
+ out.writeInt(0);
+ }
}
+ } else {
+ out.writeInt(0);
}
}
mSystemCpuTime = new LongSamplingCounter(mOnBatteryTimeBase, in);
mCpuPower = new LongSamplingCounter(mOnBatteryTimeBase, in);
- int bins = in.readInt();
- int steps = getCpuSpeedSteps();
- mSpeedBins = new LongSamplingCounter[bins >= steps ? bins : steps];
- for (int i = 0; i < bins; i++) {
- if (in.readInt() != 0) {
- mSpeedBins[i] = new LongSamplingCounter(mOnBatteryTimeBase, in);
+ if (in.readInt() != 0) {
+ int numCpuClusters = in.readInt();
+ if (mPowerProfile != null && mPowerProfile.getNumCpuClusters() != numCpuClusters) {
+ throw new ParcelFormatException("Incompatible number of cpu clusters");
+ }
+
+ mCpuClusterSpeed = new LongSamplingCounter[numCpuClusters][];
+ for (int cluster = 0; cluster < numCpuClusters; cluster++) {
+ if (in.readInt() != 0) {
+ int numSpeeds = in.readInt();
+ if (mPowerProfile != null &&
+ mPowerProfile.getNumSpeedStepsInCpuCluster(cluster) != numSpeeds) {
+ throw new ParcelFormatException("Incompatible number of cpu speeds");
+ }
+
+ final LongSamplingCounter[] cpuSpeeds = new LongSamplingCounter[numSpeeds];
+ mCpuClusterSpeed[cluster] = cpuSpeeds;
+ for (int speed = 0; speed < numSpeeds; speed++) {
+ if (in.readInt() != 0) {
+ cpuSpeeds[speed] = new LongSamplingCounter(mOnBatteryTimeBase, in);
+ }
+ }
+ }
}
+ } else {
+ mCpuClusterSpeed = null;
}
}
public void setPowerProfile(PowerProfile profile) {
synchronized (this) {
mPowerProfile = profile;
+
+ // We need to initialize the KernelCpuSpeedReaders to read from
+ // the first cpu of each core. Once we have the PowerProfile, we have access to this
+ // information.
+ final int numClusters = mPowerProfile.getNumCpuClusters();
+ mKernelCpuSpeedReaders = new KernelCpuSpeedReader[numClusters];
+ int firstCpuOfCluster = 0;
+ for (int i = 0; i < numClusters; i++) {
+ final int numSpeedSteps = mPowerProfile.getNumSpeedStepsInCpuCluster(i);
+ mKernelCpuSpeedReaders[i] = new KernelCpuSpeedReader(firstCpuOfCluster,
+ numSpeedSteps);
+ firstCpuOfCluster += mPowerProfile.getNumCoresInCpuCluster(i);
+ }
}
}
mCallback = cb;
}
- public void setNumSpeedSteps(int steps) {
- if (sNumSpeedSteps == 0) sNumSpeedSteps = steps;
- }
-
public void setRadioScanningTimeout(long timeout) {
if (mPhoneSignalScanningTimer != null) {
mPhoneSignalScanningTimer.setTimeout(timeout);
// If no app is holding a wakelock, then the distribution is normal.
final int wakelockWeight = 50;
- // Read the time spent at various cpu frequencies.
- final int cpuSpeedSteps = getCpuSpeedSteps();
- final long[] cpuSpeeds = mKernelCpuSpeedReader.readDelta();
+ // Read the time spent for each cluster at various cpu frequencies.
+ final long[][] clusterSpeeds = new long[mKernelCpuSpeedReaders.length][];
+ for (int cluster = 0; cluster < mKernelCpuSpeedReaders.length; cluster++) {
+ clusterSpeeds[cluster] = mKernelCpuSpeedReaders[cluster].readDelta();
+ }
int numWakelocks = 0;
// Add the cpu speeds to this UID. These are used as a ratio
// for computing the power this UID used.
- for (int i = 0; i < cpuSpeedSteps; i++) {
- if (u.mSpeedBins[i] == null) {
- u.mSpeedBins[i] = new LongSamplingCounter(mOnBatteryTimeBase);
+ if (u.mCpuClusterSpeed == null) {
+ u.mCpuClusterSpeed = new LongSamplingCounter[clusterSpeeds.length][];
+ }
+
+ for (int cluster = 0; cluster < clusterSpeeds.length; cluster++) {
+ if (u.mCpuClusterSpeed[cluster] == null) {
+ u.mCpuClusterSpeed[cluster] =
+ new LongSamplingCounter[clusterSpeeds[cluster].length];
+ }
+
+ final LongSamplingCounter[] cpuSpeeds = u.mCpuClusterSpeed[cluster];
+ for (int speed = 0; speed < clusterSpeeds[cluster].length; speed++) {
+ if (cpuSpeeds[speed] == null) {
+ cpuSpeeds[speed] = new LongSamplingCounter(mOnBatteryTimeBase);
+ }
+ cpuSpeeds[speed].addCountLocked(clusterSpeeds[cluster][speed]);
}
- u.mSpeedBins[i].addCountLocked(cpuSpeeds[i]);
}
}
});
}
}
- @Override
- public int getCpuSpeedSteps() {
- return sNumSpeedSteps;
- }
-
/**
* Retrieve the statistics object for a particular uid, creating if needed.
*/
}
}
- sNumSpeedSteps = in.readInt();
- if (sNumSpeedSteps < 0 || sNumSpeedSteps > 100) {
- throw new ParcelFormatException("Bad speed steps in data: " + sNumSpeedSteps);
- }
-
final int NU = in.readInt();
if (NU > 10000) {
throw new ParcelFormatException("File corrupt: too many uids " + NU);
u.mSystemCpuTime.readSummaryFromParcelLocked(in);
u.mCpuPower.readSummaryFromParcelLocked(in);
- int NSB = in.readInt();
- if (NSB > 100) {
- throw new ParcelFormatException("File corrupt: too many speed bins " + NSB);
- }
+ if (in.readInt() != 0) {
+ final int numClusters = in.readInt();
+ if (mPowerProfile != null && mPowerProfile.getNumCpuClusters() != numClusters) {
+ throw new ParcelFormatException("Incompatible cpu cluster arrangement");
+ }
- u.mSpeedBins = new LongSamplingCounter[NSB];
- for (int i=0; i<NSB; i++) {
- if (in.readInt() != 0) {
- u.mSpeedBins[i] = new LongSamplingCounter(mOnBatteryTimeBase);
- u.mSpeedBins[i].readSummaryFromParcelLocked(in);
+ u.mCpuClusterSpeed = new LongSamplingCounter[numClusters][];
+ for (int cluster = 0; cluster < numClusters; cluster++) {
+ int NSB = in.readInt();
+ if (mPowerProfile != null &&
+ mPowerProfile.getNumSpeedStepsInCpuCluster(cluster) != NSB) {
+ throw new ParcelFormatException("File corrupt: too many speed bins " + NSB);
+ }
+
+ if (in.readInt() != 0) {
+ u.mCpuClusterSpeed[cluster] = new LongSamplingCounter[NSB];
+ for (int speed = 0; speed < NSB; speed++) {
+ if (in.readInt() != 0) {
+ u.mCpuClusterSpeed[cluster][speed] = new LongSamplingCounter(
+ mOnBatteryTimeBase);
+ u.mCpuClusterSpeed[cluster][speed].readSummaryFromParcelLocked(in);
+ }
+ }
+ }
}
+ } else {
+ u.mCpuClusterSpeed = null;
}
int NW = in.readInt();
}
}
- out.writeInt(sNumSpeedSteps);
final int NU = mUidStats.size();
out.writeInt(NU);
for (int iu = 0; iu < NU; iu++) {
u.mSystemCpuTime.writeSummaryFromParcelLocked(out);
u.mCpuPower.writeSummaryFromParcelLocked(out);
- out.writeInt(u.mSpeedBins.length);
- for (int i = 0; i < u.mSpeedBins.length; i++) {
- LongSamplingCounter speedBin = u.mSpeedBins[i];
- if (speedBin != null) {
- out.writeInt(1);
- speedBin.writeSummaryFromParcelLocked(out);
- } else {
- out.writeInt(0);
+ if (u.mCpuClusterSpeed != null) {
+ out.writeInt(1);
+ out.writeInt(u.mCpuClusterSpeed.length);
+ for (LongSamplingCounter[] cpuSpeeds : u.mCpuClusterSpeed) {
+ if (cpuSpeeds != null) {
+ out.writeInt(1);
+ out.writeInt(cpuSpeeds.length);
+ for (LongSamplingCounter c : cpuSpeeds) {
+ if (c != null) {
+ out.writeInt(1);
+ c.writeSummaryFromParcelLocked(out);
+ } else {
+ out.writeInt(0);
+ }
+ }
+ } else {
+ out.writeInt(0);
+ }
}
+ } else {
+ out.writeInt(0);
}
final ArrayMap<String, Uid.Wakelock> wakeStats = u.mWakelockStats.getMap();
mFlashlightTurnedOnTimers.clear();
mCameraTurnedOnTimers.clear();
- sNumSpeedSteps = in.readInt();
-
int numUids = in.readInt();
mUidStats.clear();
for (int i = 0; i < numUids; i++) {
out.writeInt(0);
}
- out.writeInt(sNumSpeedSteps);
-
if (inclUids) {
int size = mUidStats.size();
out.writeInt(size);
public class CpuPowerCalculator extends PowerCalculator {
private static final String TAG = "CpuPowerCalculator";
private static final boolean DEBUG = BatteryStatsHelper.DEBUG;
+ private final PowerProfile mProfile;
+
+ public CpuPowerCalculator(PowerProfile profile) {
+ mProfile = profile;
+ }
@Override
public void calculateApp(BatterySipper app, BatteryStats.Uid u, long rawRealtimeUs,
long rawUptimeUs, int statsType) {
+
app.cpuTimeMs = (u.getUserCpuTimeUs(statsType) + u.getSystemCpuTimeUs(statsType)) / 1000;
- app.cpuPowerMah = (double) u.getCpuPowerMaUs(statsType) / (60.0 * 60.0 * 1000.0 * 1000.0);
+
+ // Aggregate total time spent on each cluster.
+ long totalTime = 0;
+ final int numClusters = mProfile.getNumCpuClusters();
+ for (int cluster = 0; cluster < numClusters; cluster++) {
+ final int speedsForCluster = mProfile.getNumSpeedStepsInCpuCluster(cluster);
+ for (int speed = 0; speed < speedsForCluster; speed++) {
+ totalTime += u.getTimeAtCpuSpeed(cluster, speed, statsType);
+ }
+ }
+ totalTime = Math.max(totalTime, 1);
+
+ double cpuPowerMaMs = 0;
+ for (int cluster = 0; cluster < numClusters; cluster++) {
+ final int speedsForCluster = mProfile.getNumSpeedStepsInCpuCluster(cluster);
+ for (int speed = 0; speed < speedsForCluster; speed++) {
+ final double ratio = (double) u.getTimeAtCpuSpeed(cluster, speed, statsType) /
+ totalTime;
+ final double cpuSpeedStepPower = ratio * app.cpuTimeMs *
+ mProfile.getAveragePowerForCpu(cluster, speed);
+ if (DEBUG && ratio != 0) {
+ Log.d(TAG, "UID " + u.getUid() + ": CPU cluster #" + cluster + " step #"
+ + speed + " ratio=" + BatteryStatsHelper.makemAh(ratio) + " power="
+ + BatteryStatsHelper.makemAh(cpuSpeedStepPower / (60 * 60 * 1000)));
+ }
+ cpuPowerMaMs += cpuSpeedStepPower;
+ }
+ }
+ app.cpuPowerMah = cpuPowerMaMs / (60 * 60 * 1000);
+
if (DEBUG && (app.cpuTimeMs != 0 || app.cpuPowerMah != 0)) {
Log.d(TAG, "UID " + u.getUid() + ": CPU time=" + app.cpuTimeMs + " ms power="
+ BatteryStatsHelper.makemAh(app.cpuPowerMah));
import java.util.Arrays;
/**
- * Reads CPU time spent at various frequencies and provides a delta from the last call to
- * {@link #readDelta}. Each line in the proc file has the format:
+ * Reads CPU time of a specific core spent at various frequencies and provides a delta from the
+ * last call to {@link #readDelta}. Each line in the proc file has the format:
*
* freq time
*
*/
public class KernelCpuSpeedReader {
private static final String TAG = "KernelCpuSpeedReader";
- private static final String sProcFile =
- "/sys/devices/system/cpu/cpu0/cpufreq/stats/time_in_state";
- private static final int MAX_SPEEDS = 60;
- private long[] mLastSpeedTimes = new long[MAX_SPEEDS];
- private long[] mDeltaSpeedTimes = new long[MAX_SPEEDS];
+ private final String mProcFile;
+ private final long[] mLastSpeedTimes;
+ private final long[] mDeltaSpeedTimes;
+
+ /**
+ * @param cpuNumber The cpu (cpu0, cpu1, etc) whose state to read.
+ */
+ public KernelCpuSpeedReader(int cpuNumber, int numSpeedSteps) {
+ mProcFile = String.format("/sys/devices/system/cpu/cpu%d/cpufreq/stats/time_in_state",
+ cpuNumber);
+ mLastSpeedTimes = new long[numSpeedSteps];
+ mDeltaSpeedTimes = new long[numSpeedSteps];
+ }
/**
* The returned array is modified in subsequent calls to {@link #readDelta}.
* {@link #readDelta}.
*/
public long[] readDelta() {
- try (BufferedReader reader = new BufferedReader(new FileReader(sProcFile))) {
+ try (BufferedReader reader = new BufferedReader(new FileReader(mProcFile))) {
TextUtils.SimpleStringSplitter splitter = new TextUtils.SimpleStringSplitter(' ');
String line;
int speedIndex = 0;
// The proc file reports time in 1/100 sec, so convert to milliseconds.
long time = Long.parseLong(splitter.next()) * 10;
- mDeltaSpeedTimes[speedIndex] = time - mLastSpeedTimes[speedIndex];
+ if (time < mLastSpeedTimes[speedIndex]) {
+ // The stats reset when the cpu hotplugged. That means that the time
+ // we read is offset from 0, so the time is the delta.
+ mDeltaSpeedTimes[speedIndex] = time;
+ } else {
+ mDeltaSpeedTimes[speedIndex] = time - mLastSpeedTimes[speedIndex];
+ }
mLastSpeedTimes[speedIndex] = time;
speedIndex++;
}
} catch (IOException e) {
- Slog.e(TAG, "Failed to read cpu-freq", e);
+ Slog.e(TAG, "Failed to read cpu-freq: " + e.getMessage());
Arrays.fill(mDeltaSpeedTimes, 0);
}
return mDeltaSpeedTimes;
/**
* Power consumption when CPU is in power collapse mode.
*/
+ @Deprecated
public static final String POWER_CPU_ACTIVE = "cpu.active";
/**
*/
public static final String POWER_CAMERA = "camera.avg";
+ @Deprecated
public static final String POWER_CPU_SPEEDS = "cpu.speeds";
/**
if (sPowerMap.size() == 0) {
readPowerValuesFromXml(context);
}
+ initCpuClusters();
}
private void readPowerValuesFromXml(Context context) {
}
// Now collect other config variables.
- int[] configResIds = new int[] {
+ int[] configResIds = new int[]{
com.android.internal.R.integer.config_bluetooth_idle_cur_ma,
com.android.internal.R.integer.config_bluetooth_rx_cur_ma,
com.android.internal.R.integer.config_bluetooth_tx_cur_ma,
com.android.internal.R.integer.config_wifi_operating_voltage_mv,
};
- String[] configResIdKeys = new String[] {
+ String[] configResIdKeys = new String[]{
POWER_BLUETOOTH_CONTROLLER_IDLE,
POWER_BLUETOOTH_CONTROLLER_RX,
POWER_BLUETOOTH_CONTROLLER_TX,
}
}
+ private CpuClusterKey[] mCpuClusters;
+
+ private static final String POWER_CPU_CLUSTER_CORE_COUNT = "cpu.clusters.cores";
+ private static final String POWER_CPU_CLUSTER_SPEED_PREFIX = "cpu.speeds.cluster";
+ private static final String POWER_CPU_CLUSTER_ACTIVE_PREFIX = "cpu.active.cluster";
+
+ @SuppressWarnings("deprecated")
+ private void initCpuClusters() {
+ // Figure out how many CPU clusters we're dealing with
+ final Object obj = sPowerMap.get(POWER_CPU_CLUSTER_CORE_COUNT);
+ if (obj == null || !(obj instanceof Double[])) {
+ // Default to single.
+ mCpuClusters = new CpuClusterKey[1];
+ mCpuClusters[0] = new CpuClusterKey(POWER_CPU_SPEEDS, POWER_CPU_ACTIVE, 1);
+
+ } else {
+ final Double[] array = (Double[]) obj;
+ mCpuClusters = new CpuClusterKey[array.length];
+ for (int cluster = 0; cluster < array.length; cluster++) {
+ int numCpusInCluster = (int) Math.round(array[cluster]);
+ mCpuClusters[cluster] = new CpuClusterKey(
+ POWER_CPU_CLUSTER_SPEED_PREFIX + cluster,
+ POWER_CPU_CLUSTER_ACTIVE_PREFIX + cluster,
+ numCpusInCluster);
+ }
+ }
+ }
+
+ public static class CpuClusterKey {
+ private final String timeKey;
+ private final String powerKey;
+ private final int numCpus;
+
+ private CpuClusterKey(String timeKey, String powerKey, int numCpus) {
+ this.timeKey = timeKey;
+ this.powerKey = powerKey;
+ this.numCpus = numCpus;
+ }
+ }
+
+ public int getNumCpuClusters() {
+ return mCpuClusters.length;
+ }
+
+ public int getNumCoresInCpuCluster(int index) {
+ return mCpuClusters[index].numCpus;
+ }
+
+ public int getNumSpeedStepsInCpuCluster(int index) {
+ Object value = sPowerMap.get(mCpuClusters[index].timeKey);
+ if (value != null && value instanceof Double[]) {
+ return ((Double[])value).length;
+ }
+ return 1; // Only one speed
+ }
+
+ public double getAveragePowerForCpu(int cluster, int step) {
+ if (cluster >= 0 && cluster < mCpuClusters.length) {
+ return getAveragePower(mCpuClusters[cluster].powerKey, step);
+ }
+ return 0;
+ }
+
/**
* Returns the average current in mA consumed by the subsystem, or the given
* default value if the subsystem has no recorded value.
public double getBatteryCapacity() {
return getAveragePower(POWER_BATTERY_CAPACITY);
}
-
- /**
- * Returns the number of speeds that the CPU can be run at.
- * @return
- */
- public int getNumSpeedSteps() {
- Object value = sPowerMap.get(POWER_CPU_SPEEDS);
- if (value != null && value instanceof Double[]) {
- return ((Double[])value).length;
- }
- return 1; // Only one speed
- }
}
<value>0.2</value> <!-- ~2mA -->
<value>0.1</value> <!-- ~1mA -->
</array>
- <!-- Different CPU speeds as reported in
- /sys/devices/system/cpu/cpu0/cpufreq/stats/time_in_state -->
- <array name="cpu.speeds">
+
+ <!-- A list of heterogeneous CPU clusters, where the value for each cluster represents the
+ number of CPU cores for that cluster.
+
+ Ex:
+ <array name="cpu.clusters.cores">
+ <value>4</value> // cluster 0 has cpu0, cpu1, cpu2, cpu3
+ <value>2</value> // cluster 1 has cpu4, cpu5
+ </array> -->
+ <array name="cpu.clusters.cores">
+ <value>1</value> <!-- cluster 0 has cpu0 -->
+ </array>
+
+ <!-- Different CPU speeds for cluster 0 as reported in
+ /sys/devices/system/cpu/cpu0/cpufreq/stats/time_in_state.
+
+ There must be one of these for each cluster, labeled:
+ cpu.speeds.cluster0, cpu.speeds.cluster1, etc... -->
+ <array name="cpu.speeds.cluster0">
<value>400000</value> <!-- 400 MHz CPU speed -->
</array>
- <!-- Current when CPU is idle -->
- <item name="cpu.idle">0.1</item>
- <!-- Current at each CPU speed, as per 'cpu.speeds' -->
- <array name="cpu.active">
+
+ <!-- Current at each CPU speed for cluster 0, as per 'cpu.speeds.cluster0'.
+ Like cpu.speeds.cluster0, there must be one of these present for
+ each heterogeneous CPU cluster. -->
+ <array name="cpu.active.cluster0">
<value>0.1</value> <!-- ~100mA -->
</array>
+
+ <!-- Current when CPU is idle -->
+ <item name="cpu.idle">0.1</item>
+
<!-- This is the battery capacity in mAh (measured at nominal voltage) -->
<item name="battery.capacity">1000</item>
public void publish(Context context) {
mContext = context;
- ServiceManager.addService(BatteryStats.SERVICE_NAME, asBinder());
- mStats.setNumSpeedSteps(new PowerProfile(mContext).getNumSpeedSteps());
mStats.setRadioScanningTimeout(mContext.getResources().getInteger(
com.android.internal.R.integer.config_radioScanningTimeout)
* 1000L);
mStats.setPowerProfile(new PowerProfile(context));
+ ServiceManager.addService(BatteryStats.SERVICE_NAME, asBinder());
}
/**
OSDN Git Service
