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>,
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Subject: Re: [PATCH v10 09/13] isolation: Introduce io_queue isolcpus type
Date: Thu, 02 Apr 2026 21:47:59 -0400 [thread overview]
Message-ID: <yq1se9c24s9.fsf@ca-mkp.ca.oracle.com> (raw)
In-Reply-To: <20260401222312.772334-10-atomlin@atomlin.com> (Aaron Tomlin's message of "Wed, 1 Apr 2026 18:23:08 -0400")
Aaron,
> Multiqueue drivers spread I/O queues across all CPUs for optimal
> performance. However, these drivers are not aware of CPU isolation
> requirements and will distribute queues without considering the
> isolcpus configuration.
>
> Introduce a new isolcpus mask that allows users to define which CPUs
> should have I/O queues assigned. This is similar to managed_irq, but
> intended for drivers that do not use the managed IRQ infrastructure
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
--
Martin K. Petersen
next prev parent reply other threads:[~2026-04-03 1:49 UTC|newest]
Thread overview: 39+ 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
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 [this message]
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
2026-04-05 23:09 ` Aaron Tomlin
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
2026-04-06 1:15 ` Aaron Tomlin
2026-04-06 3:29 ` Ming Lei
2026-04-08 15:58 ` Aaron Tomlin
2026-04-09 15:00 ` Ming Lei
2026-04-10 1:45 ` Aaron Tomlin
2026-04-10 2:44 ` Ming Lei
2026-04-10 19:31 ` Aaron Tomlin
2026-04-11 12:52 ` Ming Lei
2026-04-12 22:50 ` Aaron Tomlin
2026-04-13 15:11 ` Ming Lei
2026-04-15 8:34 ` Sebastian Andrzej Siewior
2026-04-15 8:58 ` Ming Lei
2026-04-15 14:47 ` Aaron Tomlin
2026-04-15 14:56 ` Aaron Tomlin
2026-04-16 0:48 ` Ming Lei
2026-04-16 13:40 ` Aaron Tomlin
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