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abfafa54db
linux/kernel/sched
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Jason Low abfafa54db sched: Reduce overestimating rq->avg_idle 
When updating avg_idle, if the delta exceeds some max value, then avg_idle
gets set to the max, regardless of what the previous avg was. This can cause
avg_idle to often be overestimated.

This patch modifies the way we update avg_idle by always updating it with the
function call to update_avg() first. Then, if avg_idle exceeds the max, we set
it to the max.

Signed-off-by: Jason Low <jason.low2@hp.com>
Reviewed-by: Rik van Riel <riel@redhat.com>
Reviewed-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1379096813-3032-2-git-send-email-jason.low2@hp.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-09-20 12:03:41 +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: Reduce overestimating rq->avg_idle 2013-09-20 12:03:41 +02:00
cpuacct.c cgroup: pass around cgroup_subsys_state instead of cgroup in file methods 2013-08-08 20:11:24 -04:00
cpuacct.h sched/cpuacct: Initialize root cpuacct earlier 2013-04-10 13:54:20 +02:00
cpupri.c sched: Fix some kernel-doc warnings 2013-07-18 09:58:21 +02:00
cpupri.h
cputime.c Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2013-09-05 12:36:46 -07:00
debug.c sched/debug: Take PID namespace into account 2013-09-12 19:14:16 +02:00
fair.c sched/balancing: Prevent the reselection of a previous env.dst_cpu if some tasks are pinned 2013-09-20 12:02:20 +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/fair: Rewrite group_imb trigger 2013-09-12 19:14:42 +02:00
stats.c fix a leak in /proc/schedstats 2013-04-29 15:41:45 -04:00
stats.h sched: Fix comment for sched_info_depart 2013-09-16 11:18:34 +02:00
stop_task.c sched: Use an accessor to read the rq clock 2013-05-28 09:40:27 +02:00