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Commit 3859173d authored by Peter Zijlstra's avatar Peter Zijlstra Committed by Ingo Molnar
Browse files

sched: Reduce some allocation pressure 



Since we now allocate SD_LV_MAX * nr_cpu_ids sched_domain/sched_group
structures when rebuilding the scheduler toplogy it might make sense
to shrink that depending on the CONFIG_ options.

This is only needed until we get rid of SD_LV_* alltogether and
provide a full dynamic topology interface.

Signed-off-by: default avatarPeter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Nick Piggin <npiggin@kernel.dk>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Link: http://lkml.kernel.org/r/20110407122942.406226449@chello.nl


Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent a6c75f2f

include/linux/sched.h

+8 −0
Original line number Diff line number Diff line
@@ -897,12 +897,20 @@ static inline struct cpumask *sched_group_cpus(struct sched_group *sg) 


enum sched_domain_level {

	SD_LV_NONE = 0,

#ifdef CONFIG_SCHED_SMT

	SD_LV_SIBLING,

#endif

#ifdef CONFIG_SCHED_MC

	SD_LV_MC,

#endif

#ifdef CONFIG_SCHED_BOOK

	SD_LV_BOOK,

#endif

	SD_LV_CPU,

#ifdef CONFIG_NUMA

	SD_LV_NODE,

	SD_LV_ALLNODES,

#endif

	SD_LV_MAX

};