diff options
| author | Mel Gorman <mgorman@suse.de> | 2013-10-07 11:29:02 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2013-10-09 12:40:28 +0200 |
| commit | e6628d5b0a2979f3e0ee6f7783ede5df50cb9ede (patch) | |
| tree | 824c34aa911095ab568e12797db9150949068b8e /kernel/sched/sched.h | |
| parent | 7a0f308337d11fd5caa9f845c6d08cc5d6067988 (diff) | |
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 <mgorman@suse.de>
Reviewed-by: Rik van Riel <riel@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1381141781-10992-25-git-send-email-mgorman@suse.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/sched/sched.h')
| -rw-r--r-- | kernel/sched/sched.h | 1 |
1 files changed, 1 insertions, 0 deletions
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); |