Re: [PATCH] irq: Add node_affinity CPU masks for smarter irqbalancehints

[Arjan van de Ven]

Peter Zijlstra wrote:
> On Tue, 2009-11-24 at 00:59 -0800, Peter P Waskiewicz Jr wrote:
> > > This all sounds backwards.. we've got a perfectly functional interface
> > > for affinity -- which people object to being used for some reason. So
> > > you add another interface on top, and that is ok?
> > But it's not functional.  If I set the affinity in smp_affinity, then
> > irqbalance will override it 10 seconds later. 
>
> And here I was thinking the kernel round-robins IRQ delivery on the mask
> specified there. 

the kernel does no such thing, nor has code to do so.

> Are you talking about some daft userspace thing that
> writes into the irq smp_affinity to effect irq balancing?

thanks ;)



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