| Date | Thu, 07 Apr 2011 14:09:53 +0200 | From | Peter Zijlstra <> | Subject | [PATCH 12/23] sched: Reduce some allocation pressure |
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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> --- include/linux/sched.h | 8 ++++++++ 1 file changed, 8 insertions(+)
Index: linux-2.6/include/linux/sched.h =================================================================== --- linux-2.6.orig/include/linux/sched.h +++ linux-2.6/include/linux/sched.h @@ -895,12 +895,20 @@ static inline struct cpumask *sched_grou 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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