Messages in this thread | | | Date | Wed, 11 Jan 2023 10:06:31 +0000 | Subject | Re: [PATCH V4 0/6] genirq/affinity: Abstract APIs from managed irq affinity spread | From | John Garry <> |
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On 27/12/2022 02:28, Ming Lei wrote: > irq_build_affinity_masks() actually grouping CPUs evenly into each managed > irq vector according to NUMA and CPU locality, and it is reasonable to abstract > one generic API for grouping CPUs evenly, the idea is suggested by Thomas > Gleixner. > > group_cpus_evenly() is abstracted and put into lib/, so blk-mq can re-use > it to build default queue mapping. > > blk-mq IO perf data is observed as more stable, meantime with big > improvement, see detailed data in the last patch. > > Please consider it for v6.3!
Just wondering could this be a better alternative for some drivers than using cpumask_local_spread()?
Thanks, John
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