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| author | Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com> | 2015-12-02 16:57:06 +0530 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2015-12-03 09:56:25 -0700 |
| commit | e0e827b9fc71fbed1a9cd246067c2a4dbd3ea220 (patch) | |
| tree | 9f3a29a597a6fd3d3e2b71604f30317177eae312 /block/blk-mq.c | |
| parent | 6f3b0e8bcf3cbb87a7459b3ed018d31d918df3f8 (diff) | |
| download | lwn-e0e827b9fc71fbed1a9cd246067c2a4dbd3ea220.tar.gz lwn-e0e827b9fc71fbed1a9cd246067c2a4dbd3ea220.zip | |
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 <raghavendra.kt@linux.vnet.ibm.com>
Reviewed-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'block/blk-mq.c')
| -rw-r--r-- | block/blk-mq.c | 9 |
1 files changed, 1 insertions, 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) |