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Commit 1beb4fcd authored by Dmitri Plotnikov's avatar Dmitri Plotnikov
Browse files

Fix Bluetooth power accounting after a BT crash 

Bug: 191488536
Test: Use BatteryStatsViewer to take a note of BT usage time
      $ adb shell killall com.android.bluetooth
      Use BatteryStatsViewer to verify that BT usage time is going up
Change-Id: I8438f19bb4bd6365da6d582fb7347f0a2cbddc1c
parent 4ed9ab51

core/java/com/android/internal/os/BatteryStatsImpl.java

+18 −0
Original line number Diff line number Diff line
@@ -12141,6 +12141,15 @@ public class BatteryStatsImpl extends BatteryStats { 
                }

            }

        }













        void reset() {













            idleTimeMs = 0;













            rxTimeMs = 0;













            txTimeMs = 0;













            energy = 0;













            uidRxBytes.clear();













            uidTxBytes.clear();













        }















    }





























    private final BluetoothActivityInfoCache mLastBluetoothActivityInfo









@@ -12167,6 +12176,15 @@ public class BatteryStatsImpl extends BatteryStats {



























        mHasBluetoothReporting = true;



























        if (info.getControllerRxTimeMillis() < mLastBluetoothActivityInfo.rxTimeMs













                || info.getControllerTxTimeMillis() < mLastBluetoothActivityInfo.txTimeMs













                || info.getControllerIdleTimeMillis() < mLastBluetoothActivityInfo.idleTimeMs













                || info.getControllerEnergyUsed() < mLastBluetoothActivityInfo.energy) {













            // A drop in accumulated Bluetooth stats is a sign of a Bluetooth crash.













            // Reset the preserved previous snapshot in order to restart accumulating deltas.













            mLastBluetoothActivityInfo.reset();













        }



























        final long rxTimeMs =















                info.getControllerRxTimeMillis() - mLastBluetoothActivityInfo.rxTimeMs;















        final long txTimeMs =