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SubjectRe: [tip:sched/urgent] sched: Fix sched_mv_power_savings for !SMT
* tip-bot for Vaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com> [2010-02-16 14:15:43]:

> Commit-ID: 28f5318167adf23b16c844b9c2253f355cb21796
> Gitweb: http://git.kernel.org/tip/28f5318167adf23b16c844b9c2253f355cb21796
> Author: Vaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com>
> AuthorDate: Mon, 8 Feb 2010 15:35:55 +0530
> Committer: Thomas Gleixner <tglx@linutronix.de>
> CommitDate: Tue, 16 Feb 2010 15:13:59 +0100
>
> sched: Fix sched_mv_power_savings for !SMT
^^^^^ _mc_

Minor typo, the summary should be
"sched: Fix sched_mc_power_savings for !SMT cases"

Thanks,
Vaidy

> Fix for sched_mc_powersavigs for pre-Nehalem platforms.
> Child sched domain should clear SD_PREFER_SIBLING if parent will have
> SD_POWERSAVINGS_BALANCE because they are contradicting.
>
> Sets the flags correctly based on sched_mc_power_savings.
>
> Signed-off-by: Vaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com>
> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
> LKML-Reference: <20100208100555.GD2931@dirshya.in.ibm.com>
> Cc: stable@kernel.org [2.6.32.x]
> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
> ---
> include/linux/sched.h | 5 ++++-
> 1 files changed, 4 insertions(+), 1 deletions(-)
>
> diff --git a/include/linux/sched.h b/include/linux/sched.h
> index 78efe7c..1f5fa53 100644
> --- a/include/linux/sched.h
> +++ b/include/linux/sched.h
> @@ -878,7 +878,10 @@ static inline int sd_balance_for_mc_power(void)
> if (sched_smt_power_savings)
> return SD_POWERSAVINGS_BALANCE;
>
> - return SD_PREFER_SIBLING;
> + if (!sched_mc_power_savings)
> + return SD_PREFER_SIBLING;
> +
> + return 0;
> }
>
> static inline int sd_balance_for_package_power(void)


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