Subject: Re: [PATCH v6] x86/apic: limit irq affinity
From: Peter Zijlstra <peterz@infradead.org>
To: Yinghai Lu <yinghai@kernel.org>
Cc: Ingo Molnar <mingo@elte.hu>, "Eric W. Biederman" <ebiederm@xmission.com>,
       Arjan van de Ven <arjan@infradead.org>,
       Thomas Gleixner <tglx@linutronix.de>,
       Dimitri Sivanich <sivanich@sgi.com>,
       Suresh Siddha <suresh.b.siddha@intel.com>,
       LKML <linux-kernel@vger.kernel.org>,
       Jesse Barnes <jbarnes@virtuousgeek.org>,
       David Miller <davem@davemloft.net>,
       Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>,
       "H. Peter Anvin" <hpa@zytor.com>
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Date: Tue, 24 Nov 2009 19:32:43 +0100
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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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