Peter Zijlstra 7d9ffa8961 sched: Micro-optimize the smart wake-affine logic ...

Smart wake-affine is using node-size as the factor currently, but the overhead
of the mask operation is high.

Thus, this patch introduce the 'sd_llc_size' percpu variable, which will record
the highest cache-share domain size, and make it to be the new factor, in order
to reduce the overhead and make it more reasonable.

Tested-by: Davidlohr Bueso <davidlohr.bueso@hp.com>
Tested-by: Michael Wang <wangyun@linux.vnet.ibm.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Acked-by: Michael Wang <wangyun@linux.vnet.ibm.com>
Cc: Mike Galbraith <efault@gmx.de>
Link: http://lkml.kernel.org/r/51D5008E.6030102@linux.vnet.ibm.com
[ Tidied up the changelog. ]
Signed-off-by: Ingo Molnar <mingo@kernel.org>

2013-07-23 12:22:06 +02:00

..

auto_group.c

sched/autogroup: Fix race with task_groups list

2013-05-28 09:40:22 +02:00

auto_group.h

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

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

clock.c

sched_clock: Prevent 64bit inatomicity on 32bit systems

2013-04-08 11:50:44 +02:00

core.c

sched: Micro-optimize the smart wake-affine logic

2013-07-23 12:22:06 +02:00

cpuacct.c

sched/cpuacct/UML: Fix header file dependency bug on the UML build

2013-04-10 15:12:41 +02:00

cpuacct.h

sched/cpuacct: Initialize root cpuacct earlier

2013-04-10 13:54:20 +02:00

cpupri.c

sched/rt: Move rt specific bits into new header file

2013-02-07 20:51:08 +01:00

cpupri.h

…

cputime.c

Linux 3.10

2013-07-01 11:18:53 +02:00

debug.c

sched/debug: Remove CONFIG_FAIR_GROUP_SCHED mask

2013-06-28 13:17:17 +02:00

fair.c

sched: Micro-optimize the smart wake-affine logic

2013-07-23 12:22:06 +02:00

features.h

mutex: Move mutex spinning code from sched/core.c back to mutex.c

2013-04-19 09:33:34 +02:00

idle_task.c

sched: Keep at least 1 tick per second for active dynticks tasks

2013-05-04 08:32:02 +02:00

Makefile

sched: Factor out load calculation code from sched/core.c --> sched/proc.c

2013-05-07 13:14:50 +02:00

proc.c

sched: Change get_rq_runnable_load() to static and inline

2013-06-27 10:07:44 +02:00

rt.c

sched/rt: Simplify pull_rt_task() logic and remove .leaf_rt_rq_list

2013-06-19 12:58:40 +02:00

sched.h

sched: Micro-optimize the smart wake-affine logic

2013-07-23 12:22:06 +02:00

stats.c

fix a leak in /proc/schedstats

2013-04-29 15:41:45 -04:00

stats.h

Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2013-07-06 14:09:38 -07:00

stop_task.c

sched: Use an accessor to read the rq clock

2013-05-28 09:40:27 +02:00