android_kernel_xiaomi_sm8450

xiaomi-sm8450/android_kernel_xiaomi_sm8450

Files

Mike Galbraith e0a79f529d sched: Fix select_idle_sibling() bouncing cow syndrome

If the previous CPU is cache affine and idle, select it.

The current implementation simply traverses the sd_llc domain,
taking the first idle CPU encountered, which walks buddy pairs
hand in hand over the package, inflicting excruciating pain.

1 tbench pair (worst case) in a 10 core + SMT package:

  pre   15.22 MB/sec 1 procs
  post 252.01 MB/sec 1 procs

Signed-off-by: Mike Galbraith <bitbucket@online.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1359371965.5783.127.camel@marge.simpson.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>

2013-02-04 20:07:24 +01:00

auto_group.c

Revert "sched/autogroup: Fix crash on reboot when autogroup is disabled"

2012-12-11 10:23:45 +01:00

auto_group.h

Revert "sched/autogroup: Fix crash on reboot when autogroup is disabled"

2012-12-11 10:23:45 +01:00

clock.c

…

core.c

wake_up_process() should be never used to wakeup a TASK_STOPPED/TRACED task

2013-01-22 10:08:17 -08:00