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Commit 9791a5a7 authored by Omprakash Dhyade's avatar Omprakash Dhyade Committed by Linux Build Service Account
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Perf: Add cpu boost for overscroller fling. 

Use perflock api's to add cpu boost for
overscroller fling. 2 Cores are made online
with minumum 1.1GHz nominal cpu freq for the
duration of the fling.
Cpu boost will be controlled by
config_enableCpuBoostForOverScrollerFling.
Default value of config is false and to turn
on use device specific overlay files.

Change-Id: If0a545e126d157d7e2fdaecc1108d41469172cd6
parent cfc33da2

core/java/android/widget/OverScroller.java

+26 −0
Original line number Diff line number Diff line
@@ -23,6 +23,7 @@ import android.util.Log; 
import android.view.ViewConfiguration;

import android.view.animation.AnimationUtils;

import android.view.animation.Interpolator;

import org.codeaurora.Performance;



/**

 * This class encapsulates scrolling with the ability to overshoot the bounds
@@ -602,6 +603,15 @@ public class OverScroller { 
        private static final int CUBIC = 1;

        private static final int BALLISTIC = 2;



        /*

         * Perf boost related variables

         * Enabled/Disabled using config_enableCpuBoostForOverScrollerFling

         * true value turns it on, by default will be turned off

         */

        private Performance mPerf = null;

        private boolean mIsPerfLockAcquired = false;

        private boolean mIsPerfBoostEnabled = false;



        static {

            float x_min = 0.0f;

            float y_min = 0.0f;
@@ -646,6 +656,9 @@ public class OverScroller { 
                    * 39.37f // inch/meter

                    * ppi

                    * 0.84f; // look and feel tuning



            mIsPerfBoostEnabled = context.getResources().getBoolean(

                   com.android.internal.R.bool.config_enableCpuBoostForOverScrollerFling);

        }



        void updateScroll(float q) {
@@ -693,6 +706,11 @@ public class OverScroller { 
        }



        void finish() {

            if (mIsPerfLockAcquired && mPerf != null) {

                mPerf.perfLockRelease();

                mIsPerfLockAcquired = false;

            }



            mCurrentPosition = mFinal;

            // Not reset since WebView relies on this value for fast fling.

            // TODO: restore when WebView uses the fast fling implemented in this class.
@@ -763,6 +781,14 @@ public class OverScroller { 
            if (velocity != 0) {

                mDuration = mSplineDuration = getSplineFlingDuration(velocity);

                totalDistance = getSplineFlingDistance(velocity);

                if (mPerf == null && mIsPerfBoostEnabled) {

                    mPerf = new Performance();

                }



                if (mPerf != null) {

                    mIsPerfLockAcquired = true;

                    mPerf.perfLockAcquire(mDuration, mPerf.CPUS_ON_2, 0x1E01, 0x20B, 0x30B, 0x1C00);

                }

            }



            mSplineDistance = (int) (totalDistance * Math.signum(velocity));

core/res/res/values/config.xml

+5 −0
Original line number Diff line number Diff line
@@ -1966,5 +1966,10 @@ 
        <item>Trying to delete contacts</item>

        <item>Trying to delete call log</item>

        <item>Trying to turn on mobile data</item>



    </string-array>



    <!-- Whether cpu boost is enabled for overscroller fling. -->

    <bool name="config_enableCpuBoostForOverScrollerFling">false</bool>



</resources>

core/res/res/values/symbols.xml

+4 −0
Original line number Diff line number Diff line
@@ -2122,4 +2122,8 @@ 
  <!-- Data Connectivity Error Configurations -->

  <java-symbol type="bool" name="config_reject_ggsn_perm_failure" />

  <java-symbol type="bool" name="config_protocol_errors_perm_failure" />



  <!-- cpu boost for overscroller fling -->

  <java-symbol type="bool" name="config_enableCpuBoostForOverScrollerFling" />



</resources>