On Fri, 12 Jan 2024 15:00:00 +0800, Ming Lei wrote:
> Inside scsi_eh_wakeup(), scsi_host_busy() is called & checked with host lock
> every time for deciding if error handler kthread needs to be waken up.
>
> This way can be too heavy in case of recovery, such as:
>
> - N hardware queues
> - queue depth is M for each hardware queue
> - each scsi_host_busy() iterates over (N * M) tag/requests
>
> [...]
Applied to 6.8/scsi-fixes, thanks!
[1/1] scsi: core: move scsi_host_busy() out of host lock for waking up EH handler
https://git.kernel.org/mkp/scsi/c/4373534a9850
--
Martin K. Petersen Oracle Linux Engineering
