1.xml中添加需要加速的包名

• /device/rockchip/rk356x/package_performance.xml

<?xml version='1.0' encoding='utf-8' standalone='yes' ?>
<performance-package>
<app package="com.antutu.ABenchMark" mode="1"/>
<app package="com.antutu.benchmark.full" mode="1"/>
<app package="com.android.server.cts.device.graphicsstats" mode="1"/>
</performance-package>

2.复制xml到out目录下

• device/rockchip/rk356x/device.mk

PRODUCT_COPY_FILES += \$(LOCAL_PATH)/package_performance.xml:$(TARGET_COPY_OUT_ODM)/etc/package_performance.xml \

3.解析xml并存储

• frameworks/base/services/core/java/com/android/server/pm/Settings.java

// Packages that define hardware accelerate mode.
final ArrayList<PackagePerformanceSetting>  mPerformancePackages = new ArrayList<PackagePerformanceSetting>();...Settings(File dataDir, PermissionSettings permission,Object lock) {mLock = lock;mPermissions = permission;mRuntimePermissionsPersistence = new RuntimePermissionPersistence(mLock);mSystemDir = new File(dataDir, "system");File configureDir = Environment.getRootDirectory();mSystemDir.mkdirs();FileUtils.setPermissions(mSystemDir.toString(),FileUtils.S_IRWXU|FileUtils.S_IRWXG|FileUtils.S_IROTH|FileUtils.S_IXOTH,-1, -1);mSettingsFilename = new File(mSystemDir, "packages.xml");mBackupSettingsFilename = new File(mSystemDir, "packages-backup.xml");File packagePerformanceInfoFile = new File("/odm/etc/package_performance.xml");// Read packages defined in configure fileif (!mSettingsFilename.exists()) {if (packagePerformanceInfoFile.exists()) {FileInputStream stream=null;try {stream = new FileInputStream(packagePerformanceInfoFile);XmlPullParser parser = Xml.newPullParser();parser.setInput(stream, null);int type;do {type = parser.next();if (type == XmlPullParser.START_TAG) {String tag = parser.getName();if ("app".equals(tag)) {String pkgName = parser.getAttributeValue(null, "package");String pkgMode = parser.getAttributeValue(null, "mode");PackagePerformanceSetting setting = new PackagePerformanceSetting(pkgName, Integer.valueOf(pkgMode));mPerformancePackages.add(setting);}}} while (type != XmlPullParser.END_DOCUMENT);