Subject: Re: new NAPI interface broken

From: Benjamin Herrenschmidt <[email-masked]>
Date: Tue, 16 Oct 2007 18:28:56 +1000

On Tue, 2007-10-16 at 00:44 -0700, David Miller wrote:
> From: Benjamin Herrenschmidt <[email-masked]>
> Date: Tue, 16 Oct 2007 17:29:47 +1000
> 
> > Do you have any pointer to how that is done on x86 or sparc64 ?
> 
> Sparc64 does it statically in the kernel.
> 
> For x86, see http://irqbalance.org/

Allright, so that's an out of tree userland thingy... (which may well
work on ppc too I suppose). Definitely not installed by default by my
distro so IRQs from the network cards on all x86's using ubuntu gutsy at
least are spread to all CPUs :-)

There's also a balance kernel thread in x86 with has a notion of irq
that isn't moveable but that flag isn't set by any driver.

Cheers,
Ben.