From: Tim Waugh <twaugh@redhat.com>
To: linux-kernel@vger.kernel.org
Subject: Re: printk while interrupts are disabled
Date: Tue, 2 Oct 2001 15:33:15 +0100 [thread overview]
Message-ID: <20011002153315.G10442@redhat.com> (raw)
In-Reply-To: <3BB9A6F4.6BDDAA81@berlin.de> <20011002102210.B1630@mueller.datastacks.com>
In-Reply-To: <20011002102210.B1630@mueller.datastacks.com>; from crutcher@datastacks.com on Tue, Oct 02, 2001 at 10:22:10AM -0400
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On Tue, Oct 02, 2001 at 10:22:10AM -0400, Crutcher Dunnavant wrote:
> They get stuffed into a buffer to be printed later. It is possible to
> overflow that buffer, and lose some of your printk messages.
Incidentally, something I noticed today: when using a parallel printer
console, 'Alt-SysRq-T' gave me a complete task list followed by the
entire kernel ring buffer.
I've taken a look at the code in lp.c, sysrq.c, and printk.c, and I
don't see what can be causing it. Anyone have ideas?
This happened when the machine had locked up for some reason.
Tim.
*/
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next prev parent reply other threads:[~2001-10-02 14:33 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-10-02 11:37 printk while interrupts are disabled Norbert Roos
2001-10-02 14:22 ` Crutcher Dunnavant
2001-10-02 14:33 ` Tim Waugh [this message]
2001-10-02 17:09 ` Andrew Morton
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