linux-kernel - Re: [PATCH V4 0/6] genirq/affinity: Abstract APIs from managed irq affinity spread

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <Y74cXN4SP7FNtSl3@T590>
Date:   Wed, 11 Jan 2023 10:18:04 +0800
From:   Ming Lei <ming.lei@...hat.com>
To:     Thomas Gleixner <tglx@...utronix.de>, Jens Axboe <axboe@...nel.dk>
Cc:     linux-kernel@...r.kernel.org, linux-block@...r.kernel.org,
        Christoph Hellwig <hch@....de>,
        John Garry <john.garry@...wei.com>
Subject: Re: [PATCH V4 0/6] genirq/affinity: Abstract APIs from managed irq
 affinity spread

Hello Thomas, Jens and guys,

On Tue, Dec 27, 2022 at 10:28:59AM +0800, Ming Lei wrote:
> Hello,
> 
> 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!
> 
> V4:
> 	- address comments from John, not export the API, given so far no
> 	  module uses this symbol
> 	- add maintainer entry for new added lib/group_cpus.c
> 	- rebase on 6.2

Any chance to take a look at this patchset?


thanks,
Ming