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| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2012-01-26 12:44:34 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2012-01-27 13:28:48 +0100 |
| commit | 39be350127ec60a078edffe5b4915dafba4ba514 (patch) | |
| tree | 9b1ad6ee75c3b5842434b697b96ccdfbe1a40a2f /block/blk.h | |
| parent | sched/rt: Fix task stack corruption under __ARCH_WANT_INTERRUPTS_ON_CTXSW (diff) | |
| download | linux-39be350127ec60a078edffe5b4915dafba4ba514.tar.xz linux-39be350127ec60a078edffe5b4915dafba4ba514.zip | |
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.h | 16 |
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: * |