commit 4074ad01e898605c64a80a8cb14c10bdbedf1bdb
author Tim Murray <timmurray@google.com> Fri Jul 08 15:45:45 2016 -0700
committer Tim Murray <timmurray@google.com> Fri Jul 08 15:45:45 2016 -0700
tree 7c6aeece1761e9e06c048cefd0b2375541e82767
parent 49fd32057410a1191eb9965745742c7e9ea68f3b

Sets android.ui to be in the fg stune group.

setThreadGroup(TOP_APP) will place a thread in the fg stune group but
not the top_app cpuset. This allows android.ui to get more runtime to
render transitions between activities without impacting its CPU
placement.

bug 29512132

Change-Id: I95e031975f83290f88ac6e538abf1062aea27ed4

services/core/java/com/android/server/UiThread.java

diff --git a/services/core/java/com/android/server/UiThread.java b/services/core/java/com/android/server/UiThread.java
index c06afc2..1bc6250 100644
--- a/services/core/java/com/android/server/UiThread.java
+++ b/services/core/java/com/android/server/UiThread.java
@@ -17,6 +17,7 @@
 package com.android.server;
 
 import android.os.Handler;
+import android.os.Process;
 import android.os.Trace;
 
 /**
@@ -29,7 +30,9 @@
     private static Handler sHandler;
 
     private UiThread() {
-        super("android.ui", android.os.Process.THREAD_PRIORITY_FOREGROUND, false /*allowIo*/);
+        super("android.ui", Process.THREAD_PRIORITY_FOREGROUND, false /*allowIo*/);
+        // Make sure UiThread is in the fg stune boost group
+        Process.setThreadGroup(Process.myTid(), Process.THREAD_GROUP_TOP_APP);
     }
 
     private static void ensureThreadLocked() {