RE: [PATCH 0/6] x86/cpu hotplug: Wake up offline CPU via mwait ornmi

[Peter Zijlstra]

On Wed, 2012-06-06 at 00:09 +0200, Thomas Gleixner wrote:
> > Well, no not like that, but I think we could do with some coupling
> > there. Like steer active interrupts away when they keep hitting idle
> > state.
> 
> That's possible, but that wants a well coordinated mechanism which
> takes the user space steering into account.

Sure, if the provided interrupt affinity mask doesn't allow this, we
loose. But typically those are all bits set.

> I'm not saying it's impossible, I'm just trying to imagine the extra
> user space interfaces needed for that. 

None, preferably.
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