Commit-ID: 44dcb04f0ea8eaac3b9c9d3172416efc5a950214 Gitweb: http://git.kernel.org/tip/44dcb04f0ea8eaac3b9c9d3172416efc5a950214 Author: Srikar Dronamraju <[email protected]> AuthorDate: Tue, 16 Jun 2015 17:26:00 +0530 Committer: Ingo Molnar <[email protected]> CommitDate: Tue, 7 Jul 2015 08:46:10 +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 <[email protected]> Signed-off-by: Peter Zijlstra (Intel) <[email protected]> Acked-by: Rik van Riel <[email protected]> Cc: Linus Torvalds <[email protected]> Cc: Mel Gorman <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Thomas Gleixner <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Ingo Molnar <[email protected]> --- 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-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
