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SubjectRe: IRQ affinities
Arjan van de Ven wrote:
> On Tue, 20 May 2008 18:14:58 -0700
> Max Krasnyanskiy <maxk@qualcomm.co
>
>> For the IRQs specifically all I need is to be able to tell the kernel
>> to not route IRQs to certain CPUs. That's mostly works already via
>> /proc/irq/N/smp_affinity, the problem is dynamically allocated irqs
>> because /proc/irq/N directory does not exist until those IRQs are
>> allocated/enabled.
> \\
>
> why don't you tell irqbalance instead? it'll make sure the irq stays
> out of the wind...
>

That will be too late. By the time irqbalance sees that IRQ it may have
already fired (possibly several times) on the "wrong" processor.

Max



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