linux-kernel - Re: Need help debugging RT-preempt patch

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <1178569719.3164.6.camel@imap.mvista.com>
Date:	Mon, 07 May 2007 13:28:39 -0700
From:	Daniel Walker <dwalker@...sta.com>
To:	Tim Bird <tim.bird@...sony.com>
Cc:	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>, dirk.behme@...glemail.com,
	linux kernel <linux-kernel@...r.kernel.org>
Subject: Re: Need help debugging RT-preempt patch

On Mon, 2007-05-07 at 11:47 -0700, Tim Bird wrote:
> I've applied patch-2.6.21-rt1 to a 2.6.21 kernel I'm using.
> With the patch applied, but no RT-Preempt options enabled,
> I'm getting network failures (eth0 transmit timeouts) on
> an OMAP board.

Are you sure you don't have HardIRQS in Threads enabled? Also are you
sure the kernel boots without the rt patch applied.

> I'm not sure what the best method is to debug this.  Should
> I turn on the latency tracer?  Should I post my configuration?
> Should I try to break up the patch and apply changes in small doses?
> I'm not familiar with the network code, or with the RT code (yet),
> so for now I'm kind of stumbling in the dark.
> 
> Note that I have other patches applied, for platform support
> for the OMAP.
> 
> I believe ARM (or OMAP) is not supported by the RT-preempt patch
> at the moment.  But I'd like to carry the patches in my kernel even
> if the options for RT-preempt are off, because I want to experiment
> with RT-preempt on other platforms (x86 and MIPS).

ARM is supported, but specific boards are hit or miss.. 

I've had OMAP working _in the past_ with this patch applied,

http://lkml.org/lkml/2006/12/10/59

There was also a patch released on one of the OMAP lists a while back
from Dirk Behme to get OMAP working on a mor recent rt release..

Daniel

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/