commit 6647bb51301ea101b73e7431888f70bb35a4fabb
author Tim Murray <timmurray@google.com> Mon Jan 11 16:16:35 2016 -0800
committer Tim Murray <timmurray@google.com> Mon Feb 01 15:03:16 2016 -0800
tree 11759cfe6dc84f76779f832e1ffa6754333293db
parent da870abcf48305312bdea618bb97a4280ab7e444

Enable top-app cpuset support.

Allows ActivityManager to use the top-app cpuset to grant the currently
focused app exclusive access to a CPU core.

Change-Id: I45bca5170477e413dec6e5889338399d0859706c

rootdir/init.rc

diff --git a/rootdir/init.rc b/rootdir/init.rc
index 289bdec..1b367c7 100644
--- a/rootdir/init.rc
+++ b/rootdir/init.rc
@@ -173,17 +173,23 @@
     write /dev/cpuset/system-background/cpus 0
     write /dev/cpuset/system-background/mems 0
 
+    mkdir /dev/cpuset/top-app
+    write /dev/cpuset/top-app/cpus 0
+    write /dev/cpuset/top-app/mems 0
+
     # change permissions for all cpusets we'll touch at runtime
     chown system system /dev/cpuset
     chown system system /dev/cpuset/foreground
     chown system system /dev/cpuset/foreground/boost
     chown system system /dev/cpuset/background
     chown system system /dev/cpuset/system-background
+    chown system system /dev/cpuset/top-app
     chown system system /dev/cpuset/tasks
     chown system system /dev/cpuset/foreground/tasks
     chown system system /dev/cpuset/foreground/boost/tasks
     chown system system /dev/cpuset/background/tasks
     chown system system /dev/cpuset/system-background/tasks
+    chown system system /dev/cpuset/top-app/tasks
 
     # set system-background to 0775 so SurfaceFlinger can touch it
     chmod 0775 /dev/cpuset/system-background
@@ -192,6 +198,7 @@
     chmod 0664 /dev/cpuset/foreground/boost/tasks
     chmod 0664 /dev/cpuset/background/tasks
     chmod 0664 /dev/cpuset/system-background/tasks
+    chmod 0664 /dev/cpuset/top-app/tasks
     chmod 0664 /dev/cpuset/tasks