linux-kernel - Re: [RFC] Add Alternative Log Buffer Support for printk Messages

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Message-Id: <20090131100113.6E1B983644C3@gemini.denx.de>
Date:	Sat, 31 Jan 2009 11:01:13 +0100
From:	Wolfgang Denk <wd@...x.de>
To:	Andrew Morton <akpm@...ux-foundation.org>
cc:	Grant Erickson <gerickson@...vations.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [RFC] Add Alternative Log Buffer Support for printk Messages

Dear Andrew,

In message <20090130142825.e63ee797.akpm@...ux-foundation.org> you wrote:
> 
> It shouldn't be too hard to cook up some way of copying some data into
> th log buffer before the kernel itself has put anything in there, if
> that's all which is needed.

Agreed, but we also want to get the data back into the shared log
buffer when the system crashes someone presses the reset button. The
log buffer shall survive reboots -that's the basic requirment of the
implementation, and this is what makes it a bit more complicated.

Best regards,

Wolfgang Denk

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