From: "Martin K. Petersen" <martin.petersen@oracle.com>
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,
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kashyap.desai@broadcom.com, sumit.saxena@broadcom.com,
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linux-kernel@vger.kernel.org, virtualization@lists.linux.dev,
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megaraidlinux.pdl@broadcom.com, mpi3mr-linuxdrv.pdl@broadcom.com,
MPT-FusionLinux.pdl@broadcom.com
Subject: Re: [PATCH v10 01/13] scsi: aacraid: use block layer helpers to calculate num of queues
Date: Thu, 02 Apr 2026 21:43:05 -0400 [thread overview]
Message-ID: <yq1ldf43jl1.fsf@ca-mkp.ca.oracle.com> (raw)
In-Reply-To: <20260401222312.772334-2-atomlin@atomlin.com> (Aaron Tomlin's message of "Wed, 1 Apr 2026 18:23:00 -0400")
Aaron,
> The calculation of the upper limit for queues does not depend solely on
> the number of online CPUs; for example, the isolcpus kernel
> command-line option must also be considered.
>
> To account for this, the block layer provides a helper function to
> retrieve the maximum number of queues. Use it to set an appropriate
> upper queue number limit.
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
--
Martin K. Petersen
next prev parent reply other threads:[~2026-04-04 4:44 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-01 22:22 [PATCH v10 00/13] blk: honor isolcpus configuration Aaron Tomlin
2026-04-01 22:23 ` [PATCH v10 01/13] scsi: aacraid: use block layer helpers to calculate num of queues Aaron Tomlin
2026-04-03 1:43 ` Martin K. Petersen [this message]
2026-04-01 22:23 ` [PATCH v10 02/13] lib/group_cpus: remove dead !SMP code Aaron Tomlin
2026-04-03 1:45 ` Martin K. Petersen
2026-04-01 22:23 ` [PATCH v10 03/13] lib/group_cpus: Add group_mask_cpus_evenly() Aaron Tomlin
2026-04-01 22:23 ` [PATCH v10 04/13] genirq/affinity: Add cpumask to struct irq_affinity Aaron Tomlin
2026-04-01 22:23 ` [PATCH v10 05/13] blk-mq: add blk_mq_{online|possible}_queue_affinity Aaron Tomlin
2026-04-01 22:23 ` [PATCH v10 06/13] nvme-pci: use block layer helpers to constrain queue affinity Aaron Tomlin
2026-04-03 1:46 ` Martin K. Petersen
2026-04-01 22:23 ` [PATCH v10 07/13] scsi: Use " Aaron Tomlin
2026-04-03 1:46 ` Martin K. Petersen
2026-04-01 22:23 ` [PATCH v10 08/13] virtio: blk/scsi: use " Aaron Tomlin
2026-04-03 1:47 ` Martin K. Petersen
2026-04-01 22:23 ` [PATCH v10 09/13] isolation: Introduce io_queue isolcpus type Aaron Tomlin
2026-04-03 1:47 ` Martin K. Petersen
2026-04-01 22:23 ` [PATCH v10 10/13] blk-mq: use hk cpus only when isolcpus=io_queue is enabled Aaron Tomlin
2026-04-03 2:06 ` Waiman Long
2026-04-01 22:23 ` [PATCH v10 11/13] blk-mq: prevent offlining hk CPUs with associated online isolated CPUs Aaron Tomlin
2026-04-01 22:23 ` [PATCH v10 12/13] genirq/affinity: Restrict managed IRQ affinity to housekeeping CPUs Aaron Tomlin
2026-04-01 22:23 ` [PATCH v10 13/13] docs: add io_queue flag to isolcpus Aaron Tomlin
2026-04-03 2:30 ` Ming Lei
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