Commit-ID: 5f042e7cbd9ebd3580077dcdc21f35e68c2adf5f Gitweb: http://git.kernel.org/tip/5f042e7cbd9ebd3580077dcdc21f35e68c2adf5f Author: Christoph Hellwig <h...@lst.de> AuthorDate: Mon, 26 Jun 2017 12:20:56 +0200 Committer: Thomas Gleixner <t...@linutronix.de> CommitDate: Wed, 28 Jun 2017 23:00:06 +0200
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 <h...@lst.de> Reviewed-by: Jens Axboe <ax...@kernel.dk> Cc: Keith Busch <keith.bu...@intel.com> Cc: linux-bl...@vger.kernel.org Cc: linux-n...@lists.infradead.org Link: http://lkml.kernel.org/r/20170626102058.10200-2-...@lst.de Signed-off-by: Thomas Gleixner <t...@linutronix.de> --- block/blk-mq-cpumap.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/block/blk-mq-cpumap.c b/block/blk-mq-cpumap.c index 8e61e86..5eaecd4 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; }
