Commit-ID: f0b8a4afd6a8c500161e45065a91738b490bf5ae Gitweb: http://git.kernel.org/tip/f0b8a4afd6a8c500161e45065a91738b490bf5ae Author: Rik van Riel <r...@redhat.com> AuthorDate: Mon, 23 Jun 2014 11:41:29 -0400 Committer: Ingo Molnar <mi...@kernel.org> CommitDate: Sat, 5 Jul 2014 11:17:33 +0200
sched/numa: Use group's max nid as task's preferred nid >From task_numa_placement, always try to consolidate the tasks in a group on the group's top nid. In case this task is part of a group that is interleaved over multiple nodes, task_numa_migrate will set the task's preferred nid to the best node it could find for the task, so this patch will cause at most one run through task_numa_migrate. Signed-off-by: Rik van Riel <r...@redhat.com> Cc: mgor...@suse.de Cc: chegu_vi...@hp.com Cc: Linus Torvalds <torva...@linux-foundation.org> Signed-off-by: Peter Zijlstra <pet...@infradead.org> Link: http://lkml.kernel.org/r/1403538095-31256-2-git-send-email-r...@redhat.com Signed-off-by: Ingo Molnar <mi...@kernel.org> --- kernel/sched/fair.c | 17 +---------------- 1 file changed, 1 insertion(+), 16 deletions(-) diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index e3ff3d1..96b2d39 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -1594,23 +1594,8 @@ static void task_numa_placement(struct task_struct *p) if (p->numa_group) { update_numa_active_node_mask(p->numa_group); - /* - * If the preferred task and group nids are different, - * iterate over the nodes again to find the best place. - */ - if (max_nid != max_group_nid) { - unsigned long weight, max_weight = 0; - - for_each_online_node(nid) { - weight = task_weight(p, nid) + group_weight(p, nid); - if (weight > max_weight) { - max_weight = weight; - max_nid = nid; - } - } - } - spin_unlock_irq(group_lock); + max_nid = max_group_nid; } if (max_faults) { -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
