On 12/6/21 5:49 AM, 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. > > [0] https://lore.kernel.org/linux-block/e4e92abbe9d52bcba6b8cc6c91c442cc@xxxxxxxxxxxxxx/ The patch(es) are missing Fixes tags. -- Jens Axboe
