commit b1a54d9fe26faa2696f9665c1f95861b2422ce3c
author Rick Yiu <rickyiu@google.com> Tue May 07 01:33:10 2019 -0700
committer android-build-merger <android-build-merger@google.com> Tue May 07 01:33:10 2019 -0700
tree 30e4efcac48b6772a846272c40cb0b8b907d9a90
parent d3fcf8b28ff08569a19a9a8f4ed0c198d464c692
parent ea366678337c5af33400d8da9233a37a3ec175e8

Merge "Apply initial settings for blkio cgroup" am: 9243da9008
am: c78c3be5cf

Change-Id: Iae287bef4afefc27e5f52d86234a46e698f172ee

rootdir/init.rc

diff --git a/rootdir/init.rc b/rootdir/init.rc
index cb45c42..1b7367c 100644
--- a/rootdir/init.rc
+++ b/rootdir/init.rc
@@ -80,7 +80,9 @@
     chmod 0664 /dev/stune/top-app/tasks
     chmod 0664 /dev/stune/rt/tasks
 
-    # Create blkio tuning nodes
+    # Create blkio group and apply initial settings.
+    # This feature needs kernel to support it, and the
+    # device's init.rc must actually set the correct values.
     mkdir /dev/blkio/background
     chown system system /dev/blkio
     chown system system /dev/blkio/background
@@ -88,6 +90,10 @@
     chown system system /dev/blkio/background/tasks
     chmod 0664 /dev/blkio/tasks
     chmod 0664 /dev/blkio/background/tasks
+    write /dev/blkio/blkio.weight 1000
+    write /dev/blkio/background/blkio.weight 500
+    write /dev/blkio/blkio.group_idle 0
+    write /dev/blkio/background/blkio.group_idle 0
 
     restorecon_recursive /mnt