diff --git a/debuggerd/debuggerd.rc b/debuggerd/debuggerd.rc
index 4338ae9..4be2e5d 100644
--- a/debuggerd/debuggerd.rc
+++ b/debuggerd/debuggerd.rc
@@ -1,2 +1,3 @@
 service debuggerd /system/bin/debuggerd
     class main
+    writepid /dev/cpuset/system-background/tasks
diff --git a/debuggerd/debuggerd64.rc b/debuggerd/debuggerd64.rc
index 341a329..c6e7bf2 100644
--- a/debuggerd/debuggerd64.rc
+++ b/debuggerd/debuggerd64.rc
@@ -1,2 +1,3 @@
 service debuggerd64 /system/bin/debuggerd64
     class main
+    writepid /dev/cpuset/system-background/tasks
diff --git a/lmkd/lmkd.rc b/lmkd/lmkd.rc
index 83c5ff0..7d6cb11 100644
--- a/lmkd/lmkd.rc
+++ b/lmkd/lmkd.rc
@@ -2,3 +2,4 @@
     class core
     critical
     socket lmkd seqpacket 0660 system system
+    writepid /dev/cpuset/system-background/tasks
diff --git a/logcat/logcatd.rc b/logcat/logcatd.rc
index 0bc581e..173d391 100644
--- a/logcat/logcatd.rc
+++ b/logcat/logcatd.rc
@@ -11,3 +11,4 @@
     # logd for write to /data/misc/logd, log group for read from log daemon
     user logd
     group log
+    writepid /dev/cpuset/system-background/tasks
diff --git a/logd/logd.rc b/logd/logd.rc
index da6a0bc..ecd2f0a 100644
--- a/logd/logd.rc
+++ b/logd/logd.rc
@@ -4,7 +4,9 @@
     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
     disabled
+    writepid /dev/cpuset/system-background/tasks
diff --git a/rootdir/init.rc b/rootdir/init.rc
index 432d420..c52af08 100644
--- a/rootdir/init.rc
+++ b/rootdir/init.rc
@@ -138,14 +138,20 @@
     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