]> www.infradead.org Git - users/jedix/linux-maple.git/commit
sched/fair: Provide runnable_load_avg back to cfs_rq
authorYuyang Du <yuyang.du@intel.com>
Wed, 15 Jul 2015 00:04:41 +0000 (08:04 +0800)
committerAllen Pais <allen.pais@oracle.com>
Tue, 16 May 2017 04:31:16 +0000 (10:01 +0530)
commit64ca179f2df9b65b101abd13c8b3a19cb05e9cba
tree372dd341981e72a6166d86de6235777012f8d18e
parent7c1f9996770518949b38ab3ed129f8819c8f6812
sched/fair: Provide runnable_load_avg back to cfs_rq

The cfs_rq's load_avg is composed of runnable_load_avg and blocked_load_avg.
Before this series, sometimes the runnable_load_avg is used, and sometimes
the load_avg is used. Completely replacing all uses of runnable_load_avg
with load_avg may be too big a leap, i.e., the blocked_load_avg is concerned
to result in overrated load. Therefore, we get runnable_load_avg back.

The new cfs_rq's runnable_load_avg is improved to be updated with all of the
runnable sched_eneities at the same time, so the one sched_entity updated and
the others stale problem is solved.

Orabug: 25544560

Signed-off-by: Yuyang Du <yuyang.du@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: arjan@linux.intel.com
Cc: bsegall@google.com
Cc: dietmar.eggemann@arm.com
Cc: fengguang.wu@intel.com
Cc: len.brown@intel.com
Cc: morten.rasmussen@arm.com
Cc: pjt@google.com
Cc: rafael.j.wysocki@intel.com
Cc: umgwanakikbuti@gmail.com
Cc: vincent.guittot@linaro.org
Link: http://lkml.kernel.org/r/1436918682-4971-7-git-send-email-yuyang.du@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
(cherry picked from commit 139622343ef31941effc6de6a5a9320371a00e62)

Signed-off-by: Atish Patra <atish.patra@oracle.com>
Signed-off-by: Allen Pais <allen.pais@oracle.com>
kernel/sched/debug.c
kernel/sched/fair.c
kernel/sched/sched.h