Commit 2cadd393 authored Jun 07, 2017 by Joonwoo Park

sched: ceil idle index to prevent from out of bound accessing



It's possible size of given idle cost index is smaller than CPU's
possible idle index size.  Ceil the CPU's idle index to prevent out
of bound accessing.

Change-Id: I0ff90d1552daba7824a5d8a9e50ff8463de0d861
Signed-off-by: Joonwoo Park <joonwoop@codeaurora.org>

parent 4632f561

kernel/sched/fair.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -5644,6 +5644,9 @@ static int sched_group_energy(struct energy_env *eenv)
		if (unlikely(idle_idx < 0))
		return idle_idx;

		if (idle_idx > sg->sge->nr_idle_states - 1)
		idle_idx = sg->sge->nr_idle_states - 1;

		group_util = group_norm_util(eenv, sg);
		sg_busy_energy = (group_util * sg->sge->cap_states[cap_idx].power);