From: Ming Lei <ming.lei@redhat.com>
To: Thomas Gleixner <tglx@linutronix.de>, Jens Axboe <axboe@kernel.dk>
Cc: linux-kernel@vger.kernel.org, linux-block@vger.kernel.org,
Christoph Hellwig <hch@lst.de>, Ming Lei <ming.lei@redhat.com>
Subject: [PATCH V3 0/7] genirq/affinity: abstract new API from managed irq affinity spread
Date: Tue, 28 Sep 2021 08:55:51 +0800 [thread overview]
Message-ID: <20210928005558.243352-1-ming.lei@redhat.com> (raw)
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!
V3:
- fix build failure in case of !CONFIG_SMP, only 6/7 is changed
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
next reply other threads:[~2021-09-28 0:56 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-28 0:55 Ming Lei [this message]
2021-09-28 0:55 ` [PATCH V3 1/7] genirq/affinity: remove the 'firstvec' parameter from irq_build_affinity_masks Ming Lei
2021-09-28 0:55 ` [PATCH V3 2/7] genirq/affinity: pass affinity managed mask array to irq_build_affinity_masks Ming Lei
2021-09-28 0:55 ` [PATCH V3 3/7] genirq/affinity: don't pass irq_affinity_desc " Ming Lei
2021-09-28 0:55 ` [PATCH V3 4/7] genirq/affinity: rename irq_build_affinity_masks as group_cpus_evenly Ming Lei
2021-09-28 0:55 ` [PATCH V3 5/7] genirq/affinity: move group_cpus_evenly() into lib/ Ming Lei
2021-09-28 5:26 ` Christoph Hellwig
2021-09-29 14:40 ` John Garry
2021-09-30 0:05 ` Ming Lei
2021-09-28 0:55 ` [PATCH V3 6/7] lib/group_cpus: allow to group cpus in case of !CONFIG_SMP Ming Lei
2021-09-28 5:27 ` Christoph Hellwig
2021-09-28 0:55 ` [PATCH V3 7/7] blk-mq: build default queue map via group_cpus_evenly() Ming Lei
2021-09-28 5:27 ` Christoph Hellwig
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