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

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Message-ID: <20090111204529.GB29383@mit.edu>
Date:	Sun, 11 Jan 2009 15:45:29 -0500
From:	Theodore Tso <tytso@....edu>
To:	Andreas Dilger <adilger@....com>
Cc:	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 Sun, Jan 11, 2009 at 06:11:35PM +0800, Andreas Dilger wrote:
> 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.

The netdump I'm familiar with had the misfeature that it didn't do
packet retransmission, so when it was used on a customer network with
any amount of traffic, packets would get dropped and the crash dump
would utterly fail.  I honestly can't remember which enterprise distro
shipped it, but I can't say I was terribly impressed.  :-(

	    	  	      	  	   	       - Ted
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