Subject: Re: [PATCH] irq: Add node_affinity CPU masks for smarter irqbalance hints

From: Arjan van de Ven <[email-masked]>
Date: Tue, 24 Nov 2009 06:42:18 -0800

Peter Zijlstra wrote:
>>> Same for userspace.
>> the problem is that there is no way currently that the driver can communicate
>> "I allocated all my metadata on THIS numa node". irqbalance and sysadmins need
>> that to not make really stupid decisions.....
> 
> And what exactly is struct device::numa_node good for then?
> 

and that is exported to userspace.. how?

... that has nothing to do with an irq, and also falls flat for a driver that
supports multiple irqs, and assigns one to each numa node.