Re: [RFC PATCH v2 1/1] scsi: mpi3mr: Introduce smp_affinity_enable module parameter

[Aaron Tomlin]

On Wed, Jun 18, 2025 at 07:49:16AM +0100, John Garry wrote:
> BTW, if you use taskset to set the affinity of a process and ensure that
> /sys/block/xxx/queue/rq_affinity is set so that we complete on same CPU as
> submitted, then I thought that this would ensure that interrupts are not
> bothering other CPUs.

Hi John,

I'm trying to understand this better. If I'm not mistaken, modifying
/sys/block/[device]/queue/rq_affinity impacts where requests are processed.
Could you clarify how this would prevent an IRQ from being delivered to an
isolated CPU?

-- 
Aaron Tomlin