On Fri, 23 Feb 2024 15:57:47 +0000, Qais Yousef wrote:
> Due to recent changes in how topology is represented on asymmetric multi
> processing systems like big.LITTLE where all cpus share the last LLC, there is
> a performance regression as cpus with different compute capacities appear under
> the same LLC and we no longer send an IPI when the requester is running on
> a different cluster with different compute capacity.
>
> Restore the old behavior by adding a new cpus_equal_capacity() function to help
> check for the new condition for these systems.
>
> [...]
Applied, thanks!
[1/2] sched: Add a new function to compare if two cpus have the same capacity
commit: b361c9027b4e4159e7bcca4eb64fd26507c19994
[2/2] block/blk-mq: Don't complete locally if capacities are different
commit: af550e4c968294398fc76b075f12d51c76caf753
Best regards,
--
Jens Axboe
