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

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Message-id: <20090111101135.GA3306@webber.adilger.int>
Date:	Sun, 11 Jan 2009 18:11:35 +0800
From:	Andreas Dilger <adilger@....com>
To:	Theodore Tso <tytso@....edu>, Mike Snitzer <snitzer@...il.com>,
	Ingo Molnar <mingo@...e.hu>,
	Nicholas Miell <nmiell@...cast.net>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	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>,
	Andi Kleen <andi@...stfloor.org>,
	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]

On Jan 10, 2009  16:15 -0500, Theodore Ts'o wrote:
> In my experience, there are very few kernel versions and hardware for
> which kdump works.  I've talked to the people who have to make kdump
> work, and every 12-18 months, with a new set of enterprise kernels
> comes out, they have to go and fix kdump so it works again for the set
> of hardware that they care about, and for the kernel version involved.

I'm sad that netconsole/netdump never made it big.  It was fairly useful,
and extending the eth drivers to add the polling mode was trivial to do.
We were using that for a few years, but it got replaced by kdump and it
appears to be less usable IMHO.

Cheers, Andreas
--
Andreas Dilger
Sr. Staff Engineer, Lustre Group
Sun Microsystems of Canada, Inc.

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