From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To: Aaron Tomlin <atomlin@atomlin.com>
Cc: axboe@kernel.dk, kbusch@kernel.org, hch@lst.de, sagi@grimberg.me,
mst@redhat.com, aacraid@microsemi.com,
James.Bottomley@hansenpartnership.com,
martin.petersen@oracle.com, liyihang9@h-partners.com,
kashyap.desai@broadcom.com, sumit.saxena@broadcom.com,
shivasharan.srikanteshwara@broadcom.com,
chandrakanth.patil@broadcom.com, sathya.prakash@broadcom.com,
sreekanth.reddy@broadcom.com,
suganath-prabu.subramani@broadcom.com, ranjan.kumar@broadcom.com,
jinpu.wang@cloud.ionos.com, tglx@kernel.org, mingo@redhat.com,
peterz@infradead.org, juri.lelli@redhat.com,
vincent.guittot@linaro.org, akpm@linux-foundation.org,
maz@kernel.org, ruanjinjie@huawei.com, yphbchou0911@gmail.com,
wagi@kernel.org, frederic@kernel.org, longman@redhat.com,
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chjohnst@gmail.com, neelx@suse.com, mproche@gmail.com,
linux-block@vger.kernel.org, linux-kernel@vger.kernel.org,
virtualization@lists.linux.dev, linux-nvme@lists.infradead.org,
linux-scsi@vger.kernel.org, megaraidlinux.pdl@broadcom.com,
mpi3mr-linuxdrv.pdl@broadcom.com,
MPT-FusionLinux.pdl@broadcom.com
Subject: Re: [PATCH v9 02/13] lib/group_cpus: remove dead !SMP code
Date: Wed, 1 Apr 2026 14:29:08 +0200 [thread overview]
Message-ID: <20260401122908.hxUnR63u@linutronix.de> (raw)
In-Reply-To: <20260330221047.630206-3-atomlin@atomlin.com>
On 2026-03-30 18:10:36 [-0400], Aaron Tomlin wrote:
> From: Daniel Wagner <wagi@kernel.org>
>
> The support for the !SMP configuration has been removed from the core by
> commit cac5cefbade9 ("sched/smp: Make SMP unconditional").
!SMP is not dead code here. You can very much compile a !SMP kernel at
which point the code below will be used. It is more that the sched
department decided that scheduler's maintenance will be easier since we
don't have to deal with !SMP case anymore.
If you wish to remove the !SMP case here you need to argue as such.
> Signed-off-by: Daniel Wagner <wagi@kernel.org>
> Reviewed-by: Hannes Reinecke <hare@suse.de>
The previous patch, this one and probably the following lack a
Signed-off-by line with your name.
Sebastian
next prev parent reply other threads:[~2026-04-01 12:29 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-30 22:10 [PATCH v9 00/13] blk: honor isolcpus configuration Aaron Tomlin
2026-03-30 22:10 ` [PATCH v9 01/13] scsi: aacraid: use block layer helpers to calculate num of queues Aaron Tomlin
2026-03-30 22:10 ` [PATCH v9 02/13] lib/group_cpus: remove dead !SMP code Aaron Tomlin
2026-04-01 12:29 ` Sebastian Andrzej Siewior [this message]
2026-04-01 19:31 ` Aaron Tomlin
2026-03-30 22:10 ` [PATCH v9 03/13] lib/group_cpus: Add group_mask_cpus_evenly() Aaron Tomlin
2026-03-30 22:10 ` [PATCH v9 04/13] genirq/affinity: Add cpumask to struct irq_affinity Aaron Tomlin
2026-03-30 22:10 ` [PATCH v9 05/13] blk-mq: add blk_mq_{online|possible}_queue_affinity Aaron Tomlin
2026-03-30 22:10 ` [PATCH v9 06/13] nvme-pci: use block layer helpers to constrain queue affinity Aaron Tomlin
2026-03-30 22:10 ` [PATCH v9 07/13] scsi: Use " Aaron Tomlin
2026-03-30 22:10 ` [PATCH v9 08/13] virtio: blk/scsi: use " Aaron Tomlin
2026-03-30 22:10 ` [PATCH v9 09/13] isolation: Introduce io_queue isolcpus type Aaron Tomlin
2026-04-01 12:49 ` Sebastian Andrzej Siewior
2026-04-01 19:05 ` Waiman Long
2026-04-02 7:58 ` Sebastian Andrzej Siewior
2026-04-03 1:54 ` Waiman Long
2026-04-01 20:58 ` Aaron Tomlin
2026-04-02 9:09 ` Sebastian Andrzej Siewior
2026-04-03 0:50 ` Aaron Tomlin
2026-04-03 1:20 ` Ming Lei
2026-03-30 22:10 ` [PATCH v9 10/13] blk-mq: use hk cpus only when isolcpus=io_queue is enabled Aaron Tomlin
2026-03-31 23:05 ` Keith Busch
2026-04-01 17:16 ` Aaron Tomlin
2026-04-03 1:43 ` Ming Lei
2026-03-30 22:10 ` [PATCH v9 11/13] blk-mq: prevent offlining hk CPUs with associated online isolated CPUs Aaron Tomlin
2026-03-30 22:10 ` [PATCH v9 12/13] genirq/affinity: Restrict managed IRQ affinity to housekeeping CPUs Aaron Tomlin
2026-03-30 22:10 ` [PATCH v9 13/13] docs: add io_queue flag to isolcpus Aaron Tomlin
2026-03-31 1:01 ` [PATCH v9 00/13] blk: honor isolcpus configuration Ming Lei
2026-03-31 13:38 ` Aaron Tomlin
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