linux-kernel - Re: Device hang when offlining a CPU due to IRQ misrouting

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Message-ID: <20070605183300.GD12782@tree.beaverton.ibm.com>
Date:	Tue, 5 Jun 2007 11:33:01 -0700
From:	"Darrick J. Wong" <djwong@...ibm.com>
To:	"Siddha, Suresh B" <suresh.b.siddha@...el.com>
Cc:	linux-kernel@...r.kernel.org, ebiederm@...ssion.com
Subject: Re: Device hang when offlining a CPU due to IRQ misrouting

On Tue, Jun 05, 2007 at 11:13:42AM -0700, Siddha, Suresh B wrote:
> I see. Your system should have 4 or 8 logical cpu's right. So you must be
> using logical flat mode, right?

I believe so.  The system has two Xeon 5150s with an Intel 5000 chipset
of some sort.

> When this bug happens, what does /proc/irq/<irq-no>/smp_affinity show?

root@...3a188:~# cat /proc/irq/114/smp_affinity 
02

--D

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