From e777b63bbd589248eb151a3191ee92331a701385 Mon Sep 17 00:00:00 2001 From: Wanpeng Li Date: Thu, 12 Dec 2013 15:23:26 +0800 Subject: sched/numa: Fix period_slot recalculation The original code is as intended and was meant to scale the difference between the NUMA_PERIOD_THRESHOLD and local/remote ratio when adjusting the scan period. The period_slot recalculation can be dropped. Signed-off-by: Wanpeng Li Reviewed-by: Naoya Horiguchi Acked-by: Mel Gorman Acked-by: David Rientjes Signed-off-by: Peter Zijlstra Cc: Andrew Morton Cc: Rik van Riel Link: http://lkml.kernel.org/r/1386833006-6600-4-git-send-email-liwanp@linux.vnet.ibm.com Signed-off-by: Ingo Molnar --- kernel/sched/fair.c | 1 - 1 file changed, 1 deletion(-) (limited to 'kernel/sched') diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 37892d7..4316af2 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -1342,7 +1342,6 @@ static void update_task_scan_period(struct task_struct *p, * scanning faster if shared accesses dominate as it may * simply bounce migrations uselessly */ - period_slot = DIV_ROUND_UP(diff, NUMA_PERIOD_SLOTS); ratio = DIV_ROUND_UP(private * NUMA_PERIOD_SLOTS, (private + shared)); diff = (diff * ratio) / NUMA_PERIOD_SLOTS; } -- cgit v1.1