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authorPeter Zijlstra <a.p.zijlstra@chello.nl>2012-01-26 12:44:34 +0100
committerIngo Molnar <mingo@elte.hu>2012-01-27 13:28:48 +0100
commit39be350127ec60a078edffe5b4915dafba4ba514 (patch)
tree9b1ad6ee75c3b5842434b697b96ccdfbe1a40a2f /block/blk.h
parentcb297a3e433dbdcf7ad81e0564e7b804c941ff0d (diff)
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sched, block: Unify cache detection
The block layer has some code trying to determine if two CPUs share a cache, the scheduler has a similar function. Expose the function used by the scheduler and make the block layer use it, thereby removing the block layers usage of CONFIG_SCHED* and topology bits. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Acked-by: Jens Axboe <axboe@kernel.dk> Link: http://lkml.kernel.org/r/1327579450.2446.95.camel@twins
Diffstat (limited to 'block/blk.h')
-rw-r--r--block/blk.h16
1 files changed, 0 insertions, 16 deletions
diff --git a/block/blk.h b/block/blk.h
index 7efd772336de..df5b59acbdff 100644
--- a/block/blk.h
+++ b/block/blk.h
@@ -164,22 +164,6 @@ static inline int queue_congestion_off_threshold(struct request_queue *q)
return q->nr_congestion_off;
}
-static inline int blk_cpu_to_group(int cpu)
-{
- int group = NR_CPUS;
-#ifdef CONFIG_SCHED_MC
- const struct cpumask *mask = cpu_coregroup_mask(cpu);
- group = cpumask_first(mask);
-#elif defined(CONFIG_SCHED_SMT)
- group = cpumask_first(topology_thread_cpumask(cpu));
-#else
- return cpu;
-#endif
- if (likely(group < NR_CPUS))
- return group;
- return cpu;
-}
-
/*
* Contribute to IO statistics IFF:
*