commit de048ec2405803f691acc779d39705035f2d8a42
author Tim Murray <timmurray@google.com> Mon Jul 11 13:57:31 2016 -0700
committer Tim Murray <timmurray@google.com> Mon Jul 11 13:57:31 2016 -0700
tree 3fd2ca262538a52d7794f3dc0c403ba4c2e8b7a6
parent a3ef0aa0988965f79109118955c3097c59168693

Add support for background stune group.

bug 29512132

Change-Id: If8144bfee0fb30cf11f2bb26494ca5e83c11d4d7

libcutils/sched_policy.c

diff --git a/libcutils/sched_policy.c b/libcutils/sched_policy.c
index c097a12..05a2048 100644
--- a/libcutils/sched_policy.c
+++ b/libcutils/sched_policy.c
@@ -145,7 +145,7 @@
         ta_schedboost_fd = open(filename, O_WRONLY | O_CLOEXEC);
         filename = "/dev/stune/foreground/tasks";
         fg_schedboost_fd = open(filename, O_WRONLY | O_CLOEXEC);
-        filename = "/dev/stune/tasks";
+        filename = "/dev/stune/background/tasks";
         bg_schedboost_fd = open(filename, O_WRONLY | O_CLOEXEC);
 #endif
     }

rootdir/init.rc

diff --git a/rootdir/init.rc b/rootdir/init.rc
index 32970e4..97bfe6b 100644
--- a/rootdir/init.rc
+++ b/rootdir/init.rc
@@ -50,15 +50,19 @@
     mkdir /dev/stune
     mount cgroup none /dev/stune schedtune
     mkdir /dev/stune/foreground
+    mkdir /dev/stune/background
     mkdir /dev/stune/top-app
     chown system system /dev/stune
     chown system system /dev/stune/foreground
+    chown system system /dev/stune/background
     chown system system /dev/stune/top-app
     chown system system /dev/stune/tasks
     chown system system /dev/stune/foreground/tasks
+    chown system system /dev/stune/background/tasks
     chown system system /dev/stune/top-app/tasks
     chmod 0664 /dev/stune/tasks
     chmod 0664 /dev/stune/foreground/tasks
+    chmod 0664 /dev/stune/background/tasks
     chmod 0664 /dev/stune/top-app/tasks
 
     # Mount staging areas for devices managed by vold