linux-kernel - Re: [PATCH 1/8] SGI x86_64 UV: Add limit console output function

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Message-Id: <1256573457.26028.313.camel@gandalf.stny.rr.com>
Date:	Mon, 26 Oct 2009 12:10:57 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	Mike Travis <travis@....com>, Ingo Molnar <mingo@...e.hu>,
	Thomas Gleixner <tglx@...utronix.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Jack Steiner <steiner@....com>,
	Randy Dunlap <rdunlap@...otime.net>,
	Greg Kroah-Hartman <gregkh@...e.de>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Heiko Carstens <heiko.carstens@...ibm.com>,
	Robin Getz <rgetz@...log.com>,
	Dave Young <hidave.darkstar@...il.com>,
	linux-kernel@...r.kernel.org, linux-doc@...r.kernel.org
Subject: Re: [PATCH 1/8] SGI x86_64 UV: Add limit console output function

On Mon, 2009-10-26 at 08:02 +0100, Andi Kleen wrote:

> Also more work could be done to make CPU boot up less verbose without
> sacrifying debuggability if something goes wrong.

What about moving printks over to trace_printk or something. And that
way we can have a "boot up" ring buffer that can later be retrieved if
something goes wrong. It already dumps to the console on panic/oops.

The trace_printk will be hidden and is very fast.

-- Steve


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