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Subject[PATCH 12/23] 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>
---
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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