Re: [PATCH v6 6/9] isolation: introduce io_queue isolcpus type

Hannes Reinecke
2025-04-25T06:26:26Z

On 4/24/25 20:19, Daniel Wagner wrote:
> Multiqueue drivers spreading IO queues on all CPUs for optimal
> performance. The drivers are not aware of the CPU isolated requirement
> and will spread all queues ignoring the isolcpus configuration.
>
> Introduce a new isolcpus mask which allows the user to define on which
> CPUs IO queues should be placed. This is similar to the managed_irq but
> for drivers which do not use the managed IRQ infrastructure.
>
> Signed-off-by: Daniel Wagner <wagi@kernel.org>
> ---
> include/linux/sched/isolation.h | 1 +
> kernel/sched/isolation.c | 7 +++++++
> 2 files changed, 8 insertions(+)
>
Reviewed-by: Hannes Reinecke <hare@suse.de>

Cheers,

Hannes
--
Dr. Hannes Reinecke Kernel Storage Architect
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