From: Martin K. Petersen Date: Tue, 29 Apr 2025 01:48:37 +0000 (-0400) Subject: Merge patch series "target: Remove atomics from main IO path" X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=6b08fe7763de9e388e6b224af2e39fa5083c44d8;p=users%2Fjedix%2Flinux-maple.git Merge patch series "target: Remove atomics from main IO path" Mike Christie says: The following patches made over Linus's tree remove the atomic use from the main IO path. There was a handful of atomic_longs used just used for stats and a couple atomics used for handling ordered commands. These patches move the stats to per cpu, and moves the ordered tracking to a per cpu counter. With the patches 8K IOPS increases by up to 33% when running fio with numjobs >= 4 and using the vhost-scsi target with virtio-scsi and virtio num_queues >= 4 (jobs and queues match, and virtqueue_size and cmd_per_lun are increased to match the total iodepth of all jobs). Link: https://lore.kernel.org/r/20250424032741.16216-1-michael.christie@oracle.com Signed-off-by: Martin K. Petersen --- 6b08fe7763de9e388e6b224af2e39fa5083c44d8