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Code Issues Releases Wiki Activity

sched/balancing: Fix cfs_rq->task_h_load calculation 

Patch a003a2 (sched: Consider runnable load average in move_tasks())
sets all top-level cfs_rqs' h_load to rq->avg.load_avg_contrib, which is
always 0. This mistype leads to all tasks having weight 0 when load
balancing in a cpu-cgroup enabled setup. There obviously should be sum
of weights of all runnable tasks there instead. Fix it.

Signed-off-by: Vladimir Davydov <vdavydov@parallels.com>
Reviewed-by: Paul Turner <pjt@google.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1379173186-11944-1-git-send-email-vdavydov@parallels.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Vladimir Davydov 2013-09-14 19:39:46 +04:00 committed by Ingo Molnar
parent 3029ede393
commit 7e3115ef51
1 changed files with 1 additions and 1 deletions
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2
kernel/sched/fair.c
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@ -4242,7 +4242,7 @@ static void update_cfs_rq_h_load(struct cfs_rq *cfs_rq)
}
if (!se) {
cfs_rq->h_load = rq->avg.load_avg_contrib;
cfs_rq->h_load = cfs_rq->runnable_load_avg;
cfs_rq->last_h_load_update = now;
}