add cpuset support to libcutils
bug 21782794
Change-Id: I249531754fb29442dc3c7434d77dbb103f4220a7
diff --git a/rootdir/init.rc b/rootdir/init.rc
index 2fbac23..acca097 100644
--- a/rootdir/init.rc
+++ b/rootdir/init.rc
@@ -125,6 +125,28 @@
write /dev/cpuctl/bg_non_interactive/cpu.rt_runtime_us 700000
write /dev/cpuctl/bg_non_interactive/cpu.rt_period_us 1000000
+ # sets up initial cpusets for ActivityManager
+ mkdir /dev/cpuset
+ mount cpuset none /dev/cpuset
+ mkdir /dev/cpuset/foreground
+ mkdir /dev/cpuset/background
+ # this ensures that the cpusets are present and usable, but the device's
+ # init.rc must actually set the correct cpus
+ write /dev/cpuset/foreground/cpus 0
+ write /dev/cpuset/background/cpus 0
+ write /dev/cpuset/foreground/mems 0
+ write /dev/cpuset/background/mems 0
+ chown system system /dev/cpuset
+ chown system system /dev/cpuset/foreground
+ chown system system /dev/cpuset/background
+ chown system system /dev/cpuset/tasks
+ chown system system /dev/cpuset/foreground/tasks
+ chown system system /dev/cpuset/background/tasks
+ chmod 0644 /dev/cpuset/foreground/tasks
+ chmod 0644 /dev/cpuset/background/tasks
+ chmod 0644 /dev/cpuset/tasks
+
+
# qtaguid will limit access to specific data based on group memberships.
# net_bw_acct grants impersonation of socket owners.
# net_bw_stats grants access to other apps' detailed tagged-socket stats.