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| author | Vaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com> | 2010-02-08 13:05:55 +0300 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2010-02-16 17:13:59 +0300 |
| commit | 28f5318167adf23b16c844b9c2253f355cb21796 (patch) | |
| tree | 54ee6c5cb9ec383caba0cd00e8413682634b886f /include | |
| parent | 50200df462023b187d80a99a52f5f2cfe3c86c26 (diff) | |
| download | linux-28f5318167adf23b16c844b9c2253f355cb21796.tar.xz | |
sched: Fix sched_mv_power_savings for !SMT
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>
Diffstat (limited to 'include')
| -rw-r--r-- | 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 78efe7c485ac..1f5fa53b46b1 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) |