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Message-ID: <20070706015558.GE31633@redhat.com> Date: Thu, 5 Jul 2007 21:55:58 -0400 From: Dave Jones <davej@...hat.com> To: Bodo Eggert <7eggert@....de> Cc: Linux Kernel <linux-kernel@...r.kernel.org>, Randy Dunlap <rdunlap@...otime.net> Subject: Re: slow down printk during boot. On Fri, Jul 06, 2007 at 03:50:11AM +0200, Bodo Eggert wrote: > Dave Jones <davej@...hat.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 - 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/
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