Commit-ID: d899a789c28ded9c72b57ddb61868d6b8fc23e80 Gitweb: http://git.kernel.org/tip/d899a789c28ded9c72b57ddb61868d6b8fc23e80 Author: Gautham R Shenoy <ego@xxxxxxxxxx> AuthorDate: Wed, 2 Sep 2009 16:59:10 +0530 Committer: Ingo Molnar <mingo@xxxxxxx> CommitDate: Fri, 4 Sep 2009 10:09:56 +0200 sched: Try to deal with low capacity, fix update_sd_power_savings_stats() sgs.group_capacity can now be 0, if for some reason group->__cpu_power happens to be less than SCHED_LOAD_SCALE/2. In that case, we need the following fix to make it work for update_sd_power_savings_stats(). That's because both sum_nr_running and group_capacity are unsigned longs. Cc: Gautham R Shenoy <ego@xxxxxxxxxx> Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx> Cc: Andreas Herrmann <andreas.herrmann3@xxxxxxx> Cc: Balbir Singh <balbir@xxxxxxxxxx> Signed-off-by: Ingo Molnar <mingo@xxxxxxx> --- kernel/sched.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/kernel/sched.c b/kernel/sched.c index 5f5b359..e1ebf9b 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -3668,7 +3668,7 @@ static inline void update_sd_power_savings_stats(struct sched_group *group, * capacity but still has some space to pick up some load * from other group and save more power */ - if (sgs->sum_nr_running > sgs->group_capacity - 1) + if (sgs->sum_nr_running + 1 > sgs->group_capacity) return; if (sgs->sum_nr_running > sds->leader_nr_running || -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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