From: Dave Jones <davej@redhat.com>
To: Bodo Eggert <7eggert@gmx.de>
Cc: Linux Kernel <linux-kernel@vger.kernel.org>,
Randy Dunlap <rdunlap@xenotime.net>
Subject: Re: slow down printk during boot.
Date: Thu, 5 Jul 2007 21:55:58 -0400 [thread overview]
Message-ID: <20070706015558.GE31633@redhat.com> (raw)
In-Reply-To: <E1I6cxX-0007Dj-Lo@be1.lrz>
On Fri, Jul 06, 2007 at 03:50:11AM +0200, Bodo Eggert wrote:
> Dave Jones <davej@redhat.com> wrote:
>
> > This patch from Randy has proven quite useful from time to time,
> > and has been in Fedora kernels for a while for that reason.
> > I fixed up some checkpatch warnings, and rediffed it a bunch
> > of times, Randy did the heavy lifting.
> >
> > ---
> >
> > This one delays each printk() during boot by a variable time
> > (from kernel command line), while system_state == SYSTEM_BOOTING.
> > Caveat: it's not terribly SMP safe or SMP nice.
> > Any ideas for improvements (esp. in the SMP area) are appreciated.
>
> I just created a different patch, which replaces the panic with one that
> does allow scrolling and reading the messages. Maybe that would be the
> better approach ...
I've used the 'slow down the printk' patch in situations where we
haven't panic'd, but silently rebooted instantly or hung with
a black screen.
Dave
--
http://www.codemonkey.org.uk
next prev parent reply other threads:[~2007-07-06 1:56 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <8DGUc-ER-37@gated-at.bofh.it>
2007-07-06 1:50 ` slow down printk during boot Bodo Eggert
2007-07-06 1:55 ` Dave Jones [this message]
2007-07-05 21:13 Dave Jones
2007-07-06 0:49 ` Jeff Garzik
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