From e6628d5b0a2979f3e0ee6f7783ede5df50cb9ede Mon Sep 17 00:00:00 2001 From: Mel Gorman Date: Mon, 7 Oct 2013 11:29:02 +0100 Subject: sched/numa: Reschedule task on preferred NUMA node once selected A preferred node is selected based on the node the most NUMA hinting faults was incurred on. There is no guarantee that the task is running on that node at the time so this patch rescheules the task to run on the most idle CPU of the selected node when selected. This avoids waiting for the balancer to make a decision. Signed-off-by: Mel Gorman Reviewed-by: Rik van Riel Cc: Andrea Arcangeli Cc: Johannes Weiner Cc: Srikar Dronamraju Signed-off-by: Peter Zijlstra Link: http://lkml.kernel.org/r/1381141781-10992-25-git-send-email-mgorman@suse.de Signed-off-by: Ingo Molnar --- kernel/sched/sched.h | 1 + 1 file changed, 1 insertion(+) (limited to 'kernel/sched/sched.h') diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h index 199099c7aa22..66458c902d84 100644 --- a/kernel/sched/sched.h +++ b/kernel/sched/sched.h @@ -557,6 +557,7 @@ static inline u64 rq_clock_task(struct rq *rq) } #ifdef CONFIG_NUMA_BALANCING +extern int migrate_task_to(struct task_struct *p, int cpu); static inline void task_numa_free(struct task_struct *p) { kfree(p->numa_faults); -- cgit v1.2.3