linux-kernel - Re: [PATCH v6] x86/apic: limit irq affinity

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Message-ID: <1259087563.4531.1776.camel@laptop>
Date:	Tue, 24 Nov 2009 19:32:43 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	Yinghai Lu <yinghai@...nel.org>
Cc:	Ingo Molnar <mingo@...e.hu>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Arjan van de Ven <arjan@...radead.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Dimitri Sivanich <sivanich@....com>,
	Suresh Siddha <suresh.b.siddha@...el.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Jesse Barnes <jbarnes@...tuousgeek.org>,
	David Miller <davem@...emloft.net>,
	Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@...el.com>,
	"H. Peter Anvin" <hpa@...or.com>
Subject: Re: [PATCH v6] x86/apic: limit irq affinity

On Tue, 2009-11-24 at 10:27 -0800, Yinghai Lu wrote:

> we already have dev numa node, so could just make irqblance to some smart to use
> that device node corresponding for irq that is binding to the device.

The argument is that a single device can have multiple IRQs and
therefore numa nodes.

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