linux-kernel - Re: Soft lockup 2.6.23.14-uc0

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Date:	Wed, 6 Feb 2008 05:01:23 -0800 (PST)
From:	Doug Kehn <rdkehn@...oo.com>
To:	linux-kernel@...r.kernel.org, uClinux <uclinux-dev@...inux.org>
Cc:	Mikael Pettersson <mikpe@...uu.se>
Subject: Re: Soft lockup 2.6.23.14-uc0

Hi Mikael,

--- Mikael Pettersson wrote:


> 
> Is this a new ixp4xx platform or one of the existing
> ones in arch/arm/mach-ixp4xx?
> 

The machine type (arch/arm/tools/mach-types) is
ct_dfs.  However, the platform is a copy of the coyote
platform in arch/arm/mach-ixp4xx.


> Anyway, I can think of two things:
> 
> 1. There was some very recent patches by Peter
> Zijlstra
>    addressing hrtimer breakage on arm and some other
>    archs in 2.6.24-git. If uclinux has backported
> some
>    of that stuff then it might explain this issue.
> 
> 2. There is a new native Linux driver for ixp4xx
>    ethernet. Patches for the 2.6.23.14 kernel can
>    be found in the nslu2-linux group's subversion
>    repository. (You'll need new firmware files
> though.)
>    Replacing Intel's IXP400 drivers with this driver
>    should at least tell you if the lockups are
>    related to your use of the Intel drivers.
> 
>    FWIW, I've never seen these lockups on my ixp4xx
>    boxes, with the Intel IXP400 drivers or with
>    the new native Linux drivers.
> 
> You should also Cc: the linux arm kernel mailing
> list,
> as the issue probably is platform specific.
> 

Thanks for the tips.  I'll check in to these.

Regards,
...doug


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