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SubjectRe: [PATCH v6] x86/apic: limit irq affinity
On Tue, 24 Nov 2009 14:55:15 +0100 (CET)
> > Furthermore, the /sysfs topology information should include IRQ
> > routing data in this case.
> Hmm, not sure about that. You'd need to scan through all the nodes to
> find the set of CPUs where an irq can be routed to. I prefer to have
> the information exposed by the irq enumeration (which is currently in
> /proc/irq though).

yes please.

one device can have multiple irqs
one irq can be servicing multiple devices

expressing that in sysfs is a nightmare, while
sticking it in /proc/irq *where the rest of the info is* is
much nicer for apps like irqbalance

Arjan van de Ven Intel Open Source Technology Centre
For development, discussion and tips for power savings,

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