commit 7c1ae0051d8492b12862f0983521883a1325bdd3
author Riley Andrews <riandrews@google.com> Tue Jul 21 21:15:37 2015 +0000
committer Android Git Automerger <android-git-automerger@android.com> Tue Jul 21 21:15:37 2015 +0000
tree 7f9c6f7bfaabe5393d0e24306eebd53139baaa26
parent 36bb59cda826bbbe4f0f56d4573b520f191a591c
parent e850f5786cdd4d3e4f1157db8785de3e6ff77eab

am e850f578: Disable scaling of the cfs tunables.

* commit 'e850f5786cdd4d3e4f1157db8785de3e6ff77eab':
  Disable scaling of the cfs tunables.

rootdir/init.rc

diff --git a/rootdir/init.rc b/rootdir/init.rc
index 9ad7c7c..7756618 100644
--- a/rootdir/init.rc
+++ b/rootdir/init.rc
@@ -82,10 +82,17 @@
     write /proc/sys/kernel/panic_on_oops 1
     write /proc/sys/kernel/hung_task_timeout_secs 0
     write /proc/cpu/alignment 4
+
+    # scheduler tunables
+    # Disable auto-scaling of scheduler tunables with hotplug. The tunables
+    # will vary across devices in unpredictable ways if allowed to scale with
+    # cpu cores.
+    write /proc/sys/kernel/sched_tunable_scaling 0
     write /proc/sys/kernel/sched_latency_ns 10000000
     write /proc/sys/kernel/sched_wakeup_granularity_ns 2000000
     write /proc/sys/kernel/sched_compat_yield 1
     write /proc/sys/kernel/sched_child_runs_first 0
+
     write /proc/sys/kernel/randomize_va_space 2
     write /proc/sys/kernel/kptr_restrict 2
     write /proc/sys/vm/mmap_min_addr 32768