diff options
| author | Christoph Hellwig <hch@lst.de> | 2017-06-26 12:20:56 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2017-06-28 23:00:06 +0200 |
| commit | 5f042e7cbd9ebd3580077dcdc21f35e68c2adf5f (patch) | |
| tree | 342e26fb18f34d6e702e21f5384da75f951ddce8 /block | |
| parent | bf22ff45bed664aefb5c4e43029057a199b7070c (diff) | |
| download | lwn-5f042e7cbd9ebd3580077dcdc21f35e68c2adf5f.tar.gz lwn-5f042e7cbd9ebd3580077dcdc21f35e68c2adf5f.zip | |
blk-mq: Include all present CPUs in the default queue mapping
This way we get a nice distribution independent of the current cpu
online / offline state.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jens Axboe <axboe@kernel.dk>
Cc: Keith Busch <keith.busch@intel.com>
Cc: linux-block@vger.kernel.org
Cc: linux-nvme@lists.infradead.org
Link: http://lkml.kernel.org/r/20170626102058.10200-2-hch@lst.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'block')
| -rw-r--r-- | block/blk-mq-cpumap.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/block/blk-mq-cpumap.c b/block/blk-mq-cpumap.c index 8e61e8640e17..5eaecd40f701 100644 --- a/block/blk-mq-cpumap.c +++ b/block/blk-mq-cpumap.c @@ -35,7 +35,6 @@ int blk_mq_map_queues(struct blk_mq_tag_set *set) { unsigned int *map = set->mq_map; unsigned int nr_queues = set->nr_hw_queues; - const struct cpumask *online_mask = cpu_online_mask; unsigned int i, nr_cpus, nr_uniq_cpus, queue, first_sibling; cpumask_var_t cpus; @@ -44,7 +43,7 @@ int blk_mq_map_queues(struct blk_mq_tag_set *set) cpumask_clear(cpus); nr_cpus = nr_uniq_cpus = 0; - for_each_cpu(i, online_mask) { + for_each_present_cpu(i) { nr_cpus++; first_sibling = get_first_sibling(i); if (!cpumask_test_cpu(first_sibling, cpus)) @@ -54,7 +53,7 @@ int blk_mq_map_queues(struct blk_mq_tag_set *set) queue = 0; for_each_possible_cpu(i) { - if (!cpumask_test_cpu(i, online_mask)) { + if (!cpumask_test_cpu(i, cpu_present_mask)) { map[i] = 0; continue; } |