Commit 8e8339a3 authored Dec 11, 2013 by Peter Zijlstra Committed by Ingo Molnar Dec 11, 2013

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>

parent 17b2112f

kernel/sched/core.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -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

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