add system-background cpuset
add a new cpuset for system services that should not run on
larger cores
bug 24144797
Change-Id: I21a54f0d6b46b3b8bd8c4564b8685c88cfc4a57d
diff --git a/rootdir/init.rc b/rootdir/init.rc
index 2b1a97c..8ea72e8 100644
--- a/rootdir/init.rc
+++ b/rootdir/init.rc
@@ -143,14 +143,20 @@
mkdir /dev/cpuset/foreground
mkdir /dev/cpuset/foreground/boost
mkdir /dev/cpuset/background
+ # system-background is for system tasks that should only run on
+ # little cores, not on bigs
+ # to be used only by init, so don't change the permissions
+ mkdir /dev/cpuset/system-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/foreground/boost/cpus 0
write /dev/cpuset/background/cpus 0
+ write /dev/cpuset/system-background/cpus 0
write /dev/cpuset/foreground/mems 0
write /dev/cpuset/foreground/boost/mems 0
write /dev/cpuset/background/mems 0
+ write /dev/cpuset/system-background/mems 0
chown system system /dev/cpuset
chown system system /dev/cpuset/foreground
chown system system /dev/cpuset/foreground/boost
@@ -548,9 +554,11 @@
socket logdr seqpacket 0666 logd logd
socket logdw dgram 0222 logd logd
group root system
+ writepid /dev/cpuset/system-background/tasks
service logd-reinit /system/bin/logd --reinit
oneshot
+ writepid /dev/cpuset/system-background/tasks
disabled
service healthd /sbin/healthd
@@ -585,6 +593,7 @@
class core
critical
socket lmkd seqpacket 0660 system system
+ writepid /dev/cpuset/system-background/tasks
service servicemanager /system/bin/servicemanager
class core
@@ -614,9 +623,11 @@
service debuggerd /system/bin/debuggerd
class main
+ writepid /dev/cpuset/system-background/tasks
service debuggerd64 /system/bin/debuggerd64
class main
+ writepid /dev/cpuset/system-background/tasks
service ril-daemon /system/bin/rild
class main
@@ -631,6 +642,7 @@
user system
group graphics drmrpc
onrestart restart zygote
+ writepid /dev/cpuset/system-background/tasks
service drm /system/bin/drmserver
class main
@@ -725,6 +737,7 @@
class late_start
user root
oneshot
+ writepid /dev/cpuset/system-background/tasks
on property:persist.logd.logpersistd=logcatd
# all exec/services are called with umask(077), so no gain beyond 0700
@@ -739,3 +752,4 @@
# logd for write to /data/misc/logd, log group for read from log daemon
user logd
group log
+ writepid /dev/cpuset/system-background/tasks
