Messages in this thread Patch in this message | | | Date | Thu, 31 Mar 2016 02:28:26 -0700 | From | tip-bot for Tim Chen <> | Subject | [tip:sched/core] sched/numa: Remove unnecessary NUMA dequeue update from non-SMP kernels |
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Commit-ID: bfdb198ccd99472c5bded689699eb30dd06316bb Gitweb: http://git.kernel.org/tip/bfdb198ccd99472c5bded689699eb30dd06316bb Author: Tim Chen <tim.c.chen@linux.intel.com> AuthorDate: Mon, 1 Feb 2016 14:47:59 -0800 Committer: Ingo Molnar <mingo@kernel.org> CommitDate: Thu, 31 Mar 2016 10:49:45 +0200
sched/numa: Remove unnecessary NUMA dequeue update from non-SMP kernels
In account_entity_enqueue(), we do not do account_numa_enqueue() as NUMA balancing is not needed for UP kernels.
Hence, we should remove the account_numa_dequeue() call from account_entity_dequeue() for UP kernels.
Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rik van Riel <riel@redhat.com> Cc: Mel Gorman <mgorman@suse.de> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1454366879.21738.29.camel@schen9-desk2.jf.intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org> --- kernel/sched/fair.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index cbb075e..1fe9916 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -2437,10 +2437,12 @@ account_entity_dequeue(struct cfs_rq *cfs_rq, struct sched_entity *se) update_load_sub(&cfs_rq->load, se->load.weight); if (!parent_entity(se)) update_load_sub(&rq_of(cfs_rq)->load, se->load.weight); +#ifdef CONFIG_SMP if (entity_is_task(se)) { account_numa_dequeue(rq_of(cfs_rq), task_of(se)); list_del_init(&se->group_node); } +#endif cfs_rq->nr_running--; }
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