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Commit b80c1c37 authored by Sanjeev Jakkilinki's avatar Sanjeev Jakkilinki Committed by Linux Build Service Account
Browse files

Perf: Add boost for scroller(horizontal scroll use cases) 

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

Change-Id: I2dc61f1385878ba2da6544d2f1cfc6a356fb41ba
parent 9791a5a7

core/java/android/widget/Scroller.java

100644 → 100755
+20 −1
Original line number Diff line number Diff line
@@ -23,7 +23,7 @@ import android.util.FloatMath; 
import android.view.ViewConfiguration;

import android.view.animation.AnimationUtils;

import android.view.animation.Interpolator;



import org.codeaurora.Performance;



/**

 * <p>This class encapsulates scrolling. You can use scrollers ({@link Scroller}
@@ -109,6 +109,13 @@ public class Scroller { 
    private float mDeceleration;

    private final float mPpi;



    /*

    * Perf boost related variables

    * Enabled/Disabled using config_enableCpuBoostForScroller

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

    */

    private Performance mPerf = null;



    // A context-specific coefficient adjusted to physical values.

    private float mPhysicalCoeff;
@@ -168,6 +175,7 @@ public class Scroller { 
     * not to support progressive "flywheel" behavior in flinging.

     */

    public Scroller(Context context, Interpolator interpolator, boolean flywheel) {

        boolean bIsPerfBoostEnabled = false;

        mFinished = true;

        if (interpolator == null) {

            mInterpolator = new ViscousFluidInterpolator();
@@ -179,6 +187,13 @@ public class Scroller { 
        mFlywheel = flywheel;



        mPhysicalCoeff = computeDeceleration(0.84f); // look and feel tuning

        bIsPerfBoostEnabled = context.getResources().getBoolean(

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



        if (mPerf == null && bIsPerfBoostEnabled) {

            mPerf = new Performance();

        }



    }



    /**
@@ -396,6 +411,10 @@ public class Scroller { 
        mDeltaX = dx;

        mDeltaY = dy;

        mDurationReciprocal = 1.0f / (float) mDuration;



        if ((mPerf != null) && (duration != 0)) {

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

        }

    }



    /**

core/res/res/values/config.xml

+3 −0
Original line number Diff line number Diff line
@@ -1972,4 +1972,7 @@ 
    <!-- Whether cpu boost is enabled for overscroller fling. -->

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



    <!-- Whether cpu boost is enabled for horizontal scroll. -->

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



</resources>

core/res/res/values/symbols.xml

+3 −0
Original line number Diff line number Diff line
@@ -2126,4 +2126,7 @@ 
  <!-- cpu boost for overscroller fling -->

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



  <!-- cpu boost for horizontal scroll -->

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



</resources>