From: "Siddha, Suresh B" <suresh.b.siddha@intel.com>
To: "Darrick J. Wong" <djwong@us.ibm.com>
Cc: "Siddha, Suresh B" <suresh.b.siddha@intel.com>,
linux-kernel@vger.kernel.org, ebiederm@xmission.com
Subject: Re: Device hang when offlining a CPU due to IRQ misrouting
Date: Tue, 5 Jun 2007 11:13:42 -0700 [thread overview]
Message-ID: <20070605181342.GE17143@linux-os.sc.intel.com> (raw)
In-Reply-To: <20070605173647.GC12782@tree.beaverton.ibm.com>
On Tue, Jun 05, 2007 at 10:36:47AM -0700, Darrick J. Wong wrote:
> On Tue, Jun 05, 2007 at 10:23:10AM -0700, Siddha, Suresh B wrote:
>
> > Darrick, I see a kernel bug in this area(which is already filled with bugs,
> > and I am looking into ways to fix them). Are you making sure that
> > between step-1 and step-2, that interrupts actually started arriving at cpu1?
> >
> > i.e., do step-1 and wait till the irq's start hitting at cpu1. At this point
> > do step-2 and let us know if you still hit this bug?
>
> Yes, the bug only happens after CPU1 begins to receive interrupts.
I see. Your system should have 4 or 8 logical cpu's right. So you must be
using logical flat mode, right?
When this bug happens, what does /proc/irq/<irq-no>/smp_affinity show?
thanks,
suresh
next prev parent reply other threads:[~2007-06-05 18:18 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-06-01 0:44 Device hang when offlining a CPU due to IRQ misrouting Darrick J. Wong
2007-06-01 19:39 ` Eric W. Biederman
2007-06-05 17:23 ` Siddha, Suresh B
2007-06-05 17:36 ` Darrick J. Wong
2007-06-05 18:13 ` Siddha, Suresh B [this message]
2007-06-05 18:33 ` Darrick J. Wong
2007-06-05 18:40 ` Siddha, Suresh B
2007-06-05 20:09 ` Darrick J. Wong
2007-06-05 21:14 ` Siddha, Suresh B
2007-06-05 23:57 ` Darrick J. Wong
2007-06-06 1:37 ` Siddha, Suresh B
2007-06-06 18:58 ` Darrick J. Wong
2007-06-06 19:35 ` Siddha, Suresh B
2007-06-06 23:16 ` Darrick J. Wong
2007-06-08 0:57 ` Siddha, Suresh B
2007-06-18 22:38 ` Darrick J. Wong
2007-06-18 23:54 ` Siddha, Suresh B
2007-06-19 0:51 ` Darrick J. Wong
2007-06-19 17:54 ` Eric W. Biederman
2007-06-19 18:00 ` Siddha, Suresh B
2007-06-19 18:55 ` Eric W. Biederman
2007-06-19 19:06 ` Darrick J. Wong
2007-06-19 19:59 ` Siddha, Suresh B
2007-06-19 20:49 ` Darrick J. Wong
2007-06-19 22:08 ` Siddha, Suresh B
2007-06-23 23:54 ` Rafael J. Wysocki
2007-06-23 23:58 ` Andrew Morton
2007-06-24 0:45 ` Eric W. Biederman
2007-06-24 0:51 ` Siddha, Suresh B
2007-06-24 12:50 ` Rafael J. Wysocki
2007-06-24 0:28 ` Siddha, Suresh B
2007-06-24 12:48 ` Rafael J. Wysocki
-- strict thread matches above, loose matches on Subject: below --
2007-06-01 21:57 Emmanuel Fusté
2007-06-02 0:18 ` Eric W. Biederman
2007-06-02 2:19 ` Darrick J. Wong
2007-06-02 3:48 ` Eric W. Biederman
2007-06-03 21:03 Emmanuel Fusté
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