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-rw-r--r--block/blk-mq.c25
1 files changed, 21 insertions, 4 deletions
diff --git a/block/blk-mq.c b/block/blk-mq.c
index a3060078a8da..060b350d3f0c 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -1861,7 +1861,6 @@ static void blk_mq_map_swqueue(struct request_queue *q,
hctx->tags = set->tags[i];
WARN_ON(!hctx->tags);
- cpumask_copy(hctx->tags->cpumask, hctx->cpumask);
/*
* Set the map size to the number of mapped software queues.
* This is more accurate and more efficient than looping
@@ -2272,11 +2271,29 @@ static int blk_mq_alloc_rq_maps(struct blk_mq_tag_set *set)
return 0;
}
-struct cpumask *blk_mq_tags_cpumask(struct blk_mq_tags *tags)
+static int blk_mq_create_mq_map(struct blk_mq_tag_set *set,
+ const struct cpumask *affinity_mask)
{
- return tags->cpumask;
+ int queue = -1, cpu = 0;
+
+ set->mq_map = kzalloc_node(sizeof(*set->mq_map) * nr_cpu_ids,
+ GFP_KERNEL, set->numa_node);
+ if (!set->mq_map)
+ return -ENOMEM;
+
+ if (!affinity_mask)
+ return 0; /* map all cpus to queue 0 */
+
+ /* If cpus are offline, map them to first hctx */
+ for_each_online_cpu(cpu) {
+ if (cpumask_test_cpu(cpu, affinity_mask))
+ queue++;
+ if (queue >= 0)
+ set->mq_map[cpu] = queue;
+ }
+
+ return 0;
}
-EXPORT_SYMBOL_GPL(blk_mq_tags_cpumask);
/*
* Alloc a tag set to be associated with one or more request queues.