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authorJianchao Wang <jianchao.w.wang@oracle.com>2019-01-24 13:25:32 +0300
committerJens Axboe <axboe@kernel.dk>2019-02-01 18:33:04 +0300
commit8ccdf4a3775229314c8bd365ac88c2cbdf36be13 (patch)
tree8b6c6835912bb3f3076d6694ba264072ae5921b6 /block/blk.h
parent058fdecc6de7cdecbf4c59b851e80eb2d6c5295f (diff)
downloadlinux-8ccdf4a3775229314c8bd365ac88c2cbdf36be13.tar.xz
blk-mq: save queue mapping result into ctx directly
Currently, the queue mapping result is saved in a two-dimensional array. In the hot path, to get a hctx, we need do following: q->queue_hw_ctx[q->tag_set->map[type].mq_map[cpu]] This isn't very efficient. We could save the queue mapping result into ctx directly with different hctx type, like, ctx->hctxs[type] Signed-off-by: Jianchao Wang <jianchao.w.wang@oracle.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk.h')
-rw-r--r--block/blk.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/block/blk.h b/block/blk.h
index 848278c52030..5d636ee41663 100644
--- a/block/blk.h
+++ b/block/blk.h
@@ -38,7 +38,7 @@ extern struct ida blk_queue_ida;
static inline struct blk_flush_queue *
blk_get_flush_queue(struct request_queue *q, struct blk_mq_ctx *ctx)
{
- return blk_mq_map_queue(q, REQ_OP_FLUSH, ctx->cpu)->fq;
+ return blk_mq_map_queue(q, REQ_OP_FLUSH, ctx)->fq;
}
static inline void __blk_get_queue(struct request_queue *q)