commit 2b3bf84373665e10d96c6b1680e5e53039505325
author Rick Yiu <rickyiu@google.com> Thu Feb 21 14:37:36 2019 +0800
committer Rick Yiu <rickyiu@google.com> Wed Feb 27 11:23:14 2019 +0800
tree bcaccd28b5a5e7f32c08e81656a00b78abeeee35
parent df3f38f6c9546cf3553a38d8d5dc7497c8c540f0

Add blkio cgroup to libprocessgroup

To differentiate IO priority for different groups.

Bug: 111422845
Bug: 117857342
Test: tasks are assigned to the group as expected
Change-Id: Ibb108d1b8e0f720f7ac4cab248b3c33d35e5483d

rootdir/init.rc

diff --git a/rootdir/init.rc b/rootdir/init.rc
index 1c84d15..ce4b380 100644
--- a/rootdir/init.rc
+++ b/rootdir/init.rc
@@ -84,6 +84,15 @@
     chmod 0664 /dev/stune/top-app/tasks
     chmod 0664 /dev/stune/rt/tasks
 
+    # Create blkio tuning nodes
+    mkdir /dev/blkio/background
+    chown system system /dev/blkio
+    chown system system /dev/blkio/background
+    chown system system /dev/blkio/tasks
+    chown system system /dev/blkio/background/tasks
+    chmod 0664 /dev/blkio/tasks
+    chmod 0664 /dev/blkio/background/tasks
+
     restorecon_recursive /mnt
 
     mount configfs none /config nodev noexec nosuid