On Tue, 03 Sep 2024 16:47:29 +0200, Tomas Henzl wrote:
> Commit 0c52310f2600 ("hrtimer: Ignore slack time for RT tasks in schedule_hrtimeout_range()")
> effectivelly shortens a sleep in a polling function in the driver.
> That is causing a performance regression as the new value
> of just 2us is too low, in certain tests the perf drop is ~30%.
> Fix this by adjusting the sleep to 20us (close to the previous value).
>
> The '+1' added to the max parameter in usleep_range is there just
> to silence static code analyzers like checkpatch.
>
> [...]
Applied to 6.12/scsi-queue, thanks!
[1/1] mpi3mr: a performance fix
https://git.kernel.org/mkp/scsi/c/24d7071d9645
--
Martin K. Petersen Oracle Linux Engineering
