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

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Message-ID: <20070605211451.GG17143@linux-os.sc.intel.com>
Date:	Tue, 5 Jun 2007 14:14:51 -0700
From:	"Siddha, Suresh B" <suresh.b.siddha@...el.com>
To:	"Darrick J. Wong" <djwong@...ibm.com>
Cc:	"Siddha, Suresh B" <suresh.b.siddha@...el.com>,
	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 01:09:54PM -0700, Darrick J. Wong wrote:
> On Tue, Jun 05, 2007 at 11:40:15AM -0700, Siddha, Suresh B wrote:
> 
> > Does this problem happen only under certain stress or something simple, like
> > 
> > boot the kernel
> > echo 2 > /proc/irq/114/smp_affinity
> > wait for irq to hit the cpu1.
> > echo 0 > /sys/devices/system/cpu/cpu1/online
> > 
> > will immmd trigger this?
> 
> The system is not under any stress at all.

Can you send us your system's dmesg aswell as output of /proc/interrupts?

thanks,
suresh
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