Messages in this thread Patch in this message |  | | Date | Thu, 12 Dec 2013 01:51:32 -0800 | From | tip-bot for Peter Zijlstra <> | Subject | [tip:sched/urgent] sched: Initialize power_orig for overlapping groups |
| |
Commit-ID: 8e8339a3a1069141985daaa2521ba304509ddecd Gitweb: http://git.kernel.org/tip/8e8339a3a1069141985daaa2521ba304509ddecd Author: Peter Zijlstra <peterz@infradead.org> AuthorDate: Wed, 11 Dec 2013 11:09:53 +0100 Committer: Ingo Molnar <mingo@kernel.org> CommitDate: Wed, 11 Dec 2013 15:47:59 +0100
sched: Initialize power_orig for overlapping groups
Yinghai reported that he saw a /0 in sg_capacity on his EX parts. Make sure to always initialize power_orig now that we actually use it.
Ideally build_sched_domains() -> init_sched_groups_power() would also initialize this; but for some yet unexplained reason some setups seem to miss updates there.
Reported-by: Yinghai Lu <yinghai@kernel.org> Tested-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/n/tip-l8ng2m9uml6fhibln8wqpom7@git.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org> --- kernel/sched/core.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/kernel/sched/core.c b/kernel/sched/core.c index e85cda2..19af58f 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -5112,6 +5112,7 @@ build_overlap_sched_groups(struct sched_domain *sd, int cpu) * die on a /0 trap. */ sg->sgp->power = SCHED_POWER_SCALE * cpumask_weight(sg_span); + sg->sgp->power_orig = sg->sgp->power; /* * Make sure the first group of this domain contains the
|  |