From e0e827b9fc71fbed1a9cd246067c2a4dbd3ea220 Mon Sep 17 00:00:00 2001 From: Raghavendra K T Date: Wed, 2 Dec 2015 16:57:06 +0530 Subject: [PATCH] blk-mq: Reuse hardware context cpumask for tags hctx->cpumask is already populated and let the tag cpumask follow that instead of going through a new for loop. Signed-off-by: Raghavendra K T Reviewed-by: Sagi Grimberg Signed-off-by: Jens Axboe --- block/blk-mq.c | 9 +-------- 1 file changed, 1 insertion(+), 8 deletions(-) diff --git a/block/blk-mq.c b/block/blk-mq.c index 93a4e1956915..35da31841eda 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -1850,6 +1850,7 @@ 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 @@ -1863,14 +1864,6 @@ static void blk_mq_map_swqueue(struct request_queue *q, hctx->next_cpu = cpumask_first(hctx->cpumask); hctx->next_cpu_batch = BLK_MQ_CPU_WORK_BATCH; } - - queue_for_each_ctx(q, ctx, i) { - if (!cpumask_test_cpu(i, online_mask)) - continue; - - hctx = q->mq_ops->map_queue(q, i); - cpumask_set_cpu(i, hctx->tags->cpumask); - } } static void queue_set_hctx_shared(struct request_queue *q, bool shared) -- 2.39.5