Date: Sun, 11 Jan 2009 19:05:45 +0100
From: Andi Kleen <andi@firstfloor.org>
To: Ingo Molnar <mingo@elte.hu>
Cc: Mike Snitzer <snitzer@gmail.com>, Nicholas Miell <nmiell@comcast.net>,
       Linus Torvalds <torvalds@linux-foundation.org>,
       jim owens <jowens@hp.com>, "H. Peter Anvin" <hpa@zytor.com>,
       Chris Mason <chris.mason@oracle.com>,
       Peter Zijlstra <peterz@infradead.org>,
       Steven Rostedt <rostedt@goodmis.org>, paulmck@linux.vnet.ibm.com,
       Gregory Haskins <ghaskins@novell.com>, Matthew Wilcox <matthew@wil.cx>,
       Andi Kleen <andi@firstfloor.org>,
       Andrew Morton <akpm@linux-foundation.org>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
       linux-fsdevel <linux-fsdevel@vger.kernel.org>,
       linux-btrfs <linux-btrfs@vger.kernel.org>,
       Thomas Gleixner <tglx@linutronix.de>, Nick Piggin <npiggin@suse.de>,
       Peter Morreale <pmorreale@novell.com>,
       Sven Dietrich <SDietrich@novell.com>, sam@ravnborg.org,
       Dave Anderson <anderson@redhat.com>
Subject: Re: source line numbers with x86_64 modules? [Was: Re: [patch] measurements, numbers about CONFIG_OPTIMIZE_INLINING=y impact]
Message-ID: <20090111180545.GL26290@one.firstfloor.org>
References: <170fa0d20901100621m74680e0ewd1916c70f1636c9b@mail.gmail.com> <20090110153446.GA13976@elte.hu> <170fa0d20901101021s3b9a18e9qe6150c374efa4d6f@mail.gmail.com> <20090111012811.GG12885@elte.hu>
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> 'kdump light' perhaps that dumps the most important data structures like 
> registers of all CPUs, task struct and the symbol tables, the current task 
> itself including the kernel stack plus the surrounding 4K of all pointers 
> that are in current registers and that point into kernel memory - maybe 
> straight to kerneloops.org [if the user agrees] - or something like that.

All you would need for that would be a new custom level in makedumpfile
that dumps only this data (except that for live dumps it can be difficult to get 
the full register contents) No kernel changes needed.

-Andi
-- 
ak@linux.intel.com
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