Commit-ID: 2d9f7144b84aac8be63e1c45cd248a5f7f67ed24 Gitweb: http://git.kernel.org/tip/2d9f7144b84aac8be63e1c45cd248a5f7f67ed24 Author: Srikar Dronamraju <srikar@xxxxxxxxxxxxxxxxxx> AuthorDate: Tue, 16 Jun 2015 17:26:00 +0530 Committer: Ingo Molnar <mingo@xxxxxxxxxx> CommitDate: Mon, 6 Jul 2015 15:29:55 +0200 sched/numa: Consider 'imbalance_pct' when comparing loads in numa_has_capacity() This is consistent with all other load balancing instances where we absorb unfairness upto env->imbalance_pct. Absorbing unfairness upto env->imbalance_pct allows to pull and retain task to their preferred nodes. Signed-off-by: Srikar Dronamraju <srikar@xxxxxxxxxxxxxxxxxx> Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx> Acked-by: Rik van Riel <riel@xxxxxxxxxx> Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> Cc: Mel Gorman <mgorman@xxxxxxx> Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx> Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Link: http://lkml.kernel.org/r/1434455762-30857-3-git-send-email-srikar@xxxxxxxxxxxxxxxxxx Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx> --- kernel/sched/fair.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 43ee84f..a53a610 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -1415,8 +1415,9 @@ static bool numa_has_capacity(struct task_numa_env *env) * --------------------- vs --------------------- * src->compute_capacity dst->compute_capacity */ - if (src->load * dst->compute_capacity > - dst->load * src->compute_capacity) + if (src->load * dst->compute_capacity * env->imbalance_pct > + + dst->load * src->compute_capacity * 100) return true; return false; -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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