Commit 28f53181 authored Feb 08, 2010 by Vaidyanathan Srinivasan Committed by Thomas Gleixner Feb 16, 2010

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>

parent 50200df4

include/linux/sched.h

+4 −1

Original line number	Diff line number	Diff line
		@@ -878,7 +878,10 @@ static inline int sd_balance_for_mc_power(void)
		if (sched_smt_power_savings)
		return SD_POWERSAVINGS_BALANCE;

		if (!sched_mc_power_savings)
		return SD_PREFER_SIBLING;

		return 0;
		}

		static inline int sd_balance_for_package_power(void)

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