| Date | Mon, 11 Apr 2011 14:38:37 GMT | From | tip-bot for Peter Zijlstra <> | Subject | [tip:sched/domains] sched: Reduce some allocation pressure |
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Commit-ID: 3859173d43658d51a749bc0201b943922577d39c Gitweb: http://git.kernel.org/tip/3859173d43658d51a749bc0201b943922577d39c Author: Peter Zijlstra <a.p.zijlstra@chello.nl> AuthorDate: Thu, 7 Apr 2011 14:09:53 +0200 Committer: Ingo Molnar <mingo@elte.hu> CommitDate: Mon, 11 Apr 2011 12:58:21 +0200
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: Peter 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: Ingo Molnar <mingo@elte.hu> --- include/linux/sched.h | 8 ++++++++ 1 files changed, 8 insertions(+), 0 deletions(-)
diff --git a/include/linux/sched.h b/include/linux/sched.h index 020b79d..5a9168b 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -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 };
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