Merge "Set android.display thread to top-app cpusets and schedtune group" (da56341d) · Commits · e / os / android_frameworks_base

core/java/android/os/Process.java

+16 −1

Original line number	Diff line number	Diff line
		@@ -675,6 +675,21 @@ public class Process {
		public static final native void setThreadGroup(int tid, int group)
		throws IllegalArgumentException, SecurityException;

		/**
		* Sets the scheduling group and the corresponding cpuset group
		* @hide
		* @param tid The identifier of the thread to change.
		* @param group The target group for this thread from THREAD_GROUP_*.
		*
		* @throws IllegalArgumentException Throws IllegalArgumentException if
		* <var>tid</var> does not exist.
		* @throws SecurityException Throws SecurityException if your process does
		* not have permission to modify the given thread, or to use the given
		* priority.
		*/
		public static final native void setThreadGroupAndCpuset(int tid, int group)
		throws IllegalArgumentException, SecurityException;

		/**
		* Sets the scheduling group for a process and all child threads
		* @hide

+17 −0

Original line number	Diff line number	Diff line
		@@ -176,6 +176,22 @@ void android_os_Process_setThreadGroup(JNIEnv* env, jobject clazz, int tid, jint
		}
		}

		void android_os_Process_setThreadGroupAndCpuset(JNIEnv* env, jobject clazz, int tid, jint grp)
		{
		ALOGV("%s tid=%d grp=%" PRId32, __func__, tid, grp);
		SchedPolicy sp = (SchedPolicy) grp;
		int res = set_sched_policy(tid, sp);

		if (res != NO_ERROR) {
		signalExceptionForGroupError(env, -res, tid);
		}

		res = set_cpuset_policy(tid, sp);
		if (res != NO_ERROR) {
		signalExceptionForGroupError(env, -res, tid);
		}
		}

		void android_os_Process_setProcessGroup(JNIEnv* env, jobject clazz, int pid, jint grp)
		{
		ALOGV("%s pid=%d grp=%" PRId32, __func__, pid, grp);
		@@ -1207,6 +1223,7 @@ static const JNINativeMethod methods[] = {
		{"getThreadPriority", "(I)I", (void*)android_os_Process_getThreadPriority},
		{"getThreadScheduler", "(I)I", (void*)android_os_Process_getThreadScheduler},
		{"setThreadGroup", "(II)V", (void*)android_os_Process_setThreadGroup},
		{"setThreadGroupAndCpuset", "(II)V", (void*)android_os_Process_setThreadGroupAndCpuset},
		{"setProcessGroup", "(II)V", (void*)android_os_Process_setProcessGroup},
		{"getProcessGroup", "(I)I", (void*)android_os_Process_getProcessGroup},
		{"getExclusiveCores", "()[I", (void*)android_os_Process_getExclusiveCores},

+11 −0

Original line number	Diff line number	Diff line
		@@ -253,6 +253,17 @@ public final class DisplayManagerService extends SystemService {

		PowerManager pm = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE);
		mGlobalDisplayBrightness = pm.getDefaultScreenBrightnessSetting();

		}

		public void setupSchedulerPolicies() {
		/*
		* android.display is critical to user experience and we should
		* make sure it is not in the default foregroup groups, add it to
		* top-app to make sure it uses all the cores and scheduling
		* settings for top-app when it runs.
		*/
		Process.setThreadGroupAndCpuset(DisplayThread.get().getThreadId(), Process.THREAD_GROUP_TOP_APP);
		}

		@Override

+4 −0

Original line number	Diff line number	Diff line
		@@ -614,6 +614,10 @@ public final class SystemServer {
		mActivityManagerService.setSystemProcess();
		traceEnd();

		// DisplayManagerService needs to setup android.display scheduling related policies
		// since setSystemProcess() would have overridden policies due to setProcessGroup
		mDisplayManagerService.setupSchedulerPolicies();

		// Manages Overlay packages
		traceBeginAndSlog("StartOverlayManagerService");
		mSystemServiceManager.startService(new OverlayManagerService(mSystemContext, installer));