netdev - Re: new NAPI interface broken

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Message-Id: <1192523336.7205.13.camel@pasglop>
Date:	Tue, 16 Oct 2007 18:28:56 +1000
From:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:	David Miller <davem@...emloft.net>
Cc:	ossthema@...ibm.com, shemminger@...ux-foundation.org,
	netdev@...r.kernel.org, themann@...ibm.com, raisch@...ibm.com
Subject: Re: new NAPI interface broken

On Tue, 2007-10-16 at 00:44 -0700, David Miller wrote:
> From: Benjamin Herrenschmidt <benh@...nel.crashing.org>
> 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.

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