Commit 9aa7b369 authored by Ingo Molnar's avatar Ingo Molnar
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sched: increase the resolution of smpnice 



increase SMP-nice's resolution. This is needed by CFS to
implement SCHED_IDLE and cleaned up nice level support.

no behavioral changes.

Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 425e0968

include/linux/sched.h

+8 −1
Original line number Diff line number Diff line
@@ -652,7 +652,14 @@ enum cpu_idle_type { 
/*

 * sched-domains (multiprocessor balancing) declarations:

 */

#define SCHED_LOAD_SCALE	128UL	/* increase resolution of load */



/*

 * Increase resolution of nice-level calculations:

 */

#define SCHED_LOAD_SHIFT	10

#define SCHED_LOAD_SCALE	(1L << SCHED_LOAD_SHIFT)



#define SCHED_LOAD_SCALE_FUZZ	(SCHED_LOAD_SCALE >> 5)



#ifdef CONFIG_SMP

#define SD_LOAD_BALANCE		1	/* Do load balancing on this domain. */