linux-kernel - Re: source line numbers with x86_64 modules? [Was: Re: [patch] measurements, numbers about CONFIG_OPTIMIZE

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Message-ID: <20090110232245.GA25872@elte.hu>
Date:	Sun, 11 Jan 2009 00:22:45 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Andi Kleen <andi@...stfloor.org>, Theodore Tso <tytso@....edu>,
	Mike Snitzer <snitzer@...il.com>,
	Nicholas Miell <nmiell@...cast.net>, jim owens <jowens@...com>,
	"H. Peter Anvin" <hpa@...or.com>,
	Chris Mason <chris.mason@...cle.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	paulmck@...ux.vnet.ibm.com, Gregory Haskins <ghaskins@...ell.com>,
	Matthew Wilcox <matthew@....cx>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	linux-fsdevel <linux-fsdevel@...r.kernel.org>,
	linux-btrfs <linux-btrfs@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Nick Piggin <npiggin@...e.de>,
	Peter Morreale <pmorreale@...ell.com>,
	Sven Dietrich <SDietrich@...ell.com>, sam@...nborg.org,
	Dave Anderson <anderson@...hat.com>
Subject: Re: source line numbers with x86_64 modules? [Was: Re: [patch]
	measurements, numbers about CONFIG_OPTIMIZE_INLINING=y impact]


* Linus Torvalds <torvalds@...ux-foundation.org> wrote:

> As far as I'm concerned, digital cameras have been more useful than 
> kernel dumps to kernel debugging.

Yes, especially ones with VGA video capture. (I caught a 
"oops+triple-fault" crash via that trick once, which was not 
serial-console capture-able and which was just a single frame in the 25 
fps video of the incident.)

	Ingo
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