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-next>] [day] [month] [year] [list]
Message-Id: <20210818092812.787558-1-ming.lei@redhat.com>
Date:   Wed, 18 Aug 2021 17:28:05 +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>, Ming Lei <ming.lei@...hat.com>
Subject: [PATCH V2 0/7] genirq/affinity: abstract new API from managed irq affinity spread

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.

Please comments!

V2:
	- fix build failure in case of !CONFIG_SMP
	- fix commit log typo
	- fix memory leak in last patch
	- add reviewed-by

Since RFC:
	- remove RFC
	- rebase on -next tree

Ming Lei (7):
  genirq/affinity: remove the 'firstvec' parameter from
    irq_build_affinity_masks
  genirq/affinity: pass affinity managed mask array to
    irq_build_affinity_masks
  genirq/affinity: don't pass irq_affinity_desc array to
    irq_build_affinity_masks
  genirq/affinity: rename irq_build_affinity_masks as group_cpus_evenly
  genirq/affinity: move group_cpus_evenly() into lib/
  lib/group_cpus: allow to group cpus in case of !CONFIG_SMP
  blk-mq: build default queue map via group_cpus_evenly()

 block/blk-mq-cpumap.c      |  65 ++----
 include/linux/group_cpus.h |  14 ++
 kernel/irq/affinity.c      | 404 +---------------------------------
 lib/Makefile               |   2 +
 lib/group_cpus.c           | 428 +++++++++++++++++++++++++++++++++++++
 5 files changed, 467 insertions(+), 446 deletions(-)
 create mode 100644 include/linux/group_cpus.h
 create mode 100644 lib/group_cpus.c

-- 
2.31.1

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ