Messages in this thread | | | From | Jens Axboe <> | Subject | Re: [PATCH v2 0/3] blk-mq: Optimise blk_mq_queue_tag_busy_iter() for shared tags | Date | Tue, 07 Dec 2021 09:18:02 -0700 |
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On Mon, 6 Dec 2021 20:49:47 +0800, John Garry wrote: > In [0] Kashyap reports high CPU usage for blk_mq_queue_tag_busy_iter() > and callees for shared tags. > > Indeed blk_mq_queue_tag_busy_iter() would be less optimum for moving to > shared tags, but it was not optimum previously. > > This series optimises by having only a single iter (per regular and resv > tags) for the shared tags, instead of an iter per HW queue. > > [...]
Applied, thanks!
[1/3] blk-mq: Drop busy_iter_fn blk_mq_hw_ctx argument (no commit info) [2/3] blk-mq: Delete busy_iter_fn (no commit info) [3/3] blk-mq: Optimise blk_mq_queue_tag_busy_iter() for shared tags (no commit info)
Best regards, -- Jens Axboe
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