Messages in this thread | | | Date | Wed, 28 Oct 2020 06:56:16 +0000 | From | Christoph Hellwig <> | Subject | Re: [PATCH RFC] blk-mq: Don't IPI requests on PREEMPT_RT |
| |
> The remaining part is a switch to llist which avoids locking (IRQ > off/on) and it allows invoke the IPI/raise softirq only if something was > added. The entries are now processed in the reverse order but this > shouldn't matter right?
For correctness it should not matter, but I think it could have performance implications. I think you'll have to throw in a llist_reverse_order.
> I would split this into two patches (the blk_mq_complete_need_ipi() hunk > and the llist part) unless there are objections.
Yes, please do.
| |