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    SubjectRe: [patch 120/123] sched: Fix sched_mv_power_savings for !SMT
    * Greg KH <gregkh@suse.de> [2010-03-12 16:13:38]:

    > 2.6.33-stable review patch. If anyone has any objections, please let me know.

    Hi Greg,

    Thanks to pulling this into .32 and .33-stable. Please correct the
    subject and commit message to sched_mc_power_savings when you apply.
    The term sched_mv_power_savings is a typo.

    "sched: Fix sched_mc_power_savings for !SMT"

    Thanks,
    Vaidy

    Ref: http://lkml.org/lkml/2010/2/16/230

    > -----------------
    >
    > From: Vaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com>
    >
    > commit 28f5318167adf23b16c844b9c2253f355cb21796 upstream.
    >
    > 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>
    > Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
    > Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
    >
    > ---
    > include/linux/sched.h | 5 ++++-
    > 1 file changed, 4 insertions(+), 1 deletion(-)
    >
    > --- a/include/linux/sched.h
    > +++ b/include/linux/sched.h
    > @@ -878,7 +878,10 @@ static inline int sd_balance_for_mc_powe
    > 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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