Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758641AbYHHSC1 (ORCPT ); Fri, 8 Aug 2008 14:02:27 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756988AbYHHSCS (ORCPT ); Fri, 8 Aug 2008 14:02:18 -0400 Received: from one.firstfloor.org ([213.235.205.2]:60522 "EHLO one.firstfloor.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753121AbYHHSCR (ORCPT ); Fri, 8 Aug 2008 14:02:17 -0400 Date: Fri, 8 Aug 2008 20:03:03 +0200 From: Andi Kleen To: Vivek Goyal Cc: Andi Kleen , Keith Owens , Jay Lan , Christoph Lameter , Stefan Richter , Nick Piggin , jmerkey@wolfmountaingroup.com, Geert Uytterhoeven , Josh Boyer , linux-kernel@vger.kernel.org, Takenori Nagano , Bernhard Walle Subject: Re: [ANNOUNCE] Merkey's Kernel Debugger Message-ID: <20080808180303.GB9038@one.firstfloor.org> References: <20080807200659.GJ24801@one.firstfloor.org> <23175.1218148134@ocs10w> <20080808011500.GA531@redhat.com> <20080808022916.GM24801@one.firstfloor.org> <20080808132953.GB3840@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20080808132953.GB3840@redhat.com> User-Agent: Mutt/1.4.2.1i Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1140 Lines: 27 > Are you suggesting that kdump should be put onto panic_notifier_list, in > such a way so that it runs last? The point was that kernel debuggers have an at least as legitimate need as kdump to run early on panic as kdump. In particularly they should run before kdump because kdump can be triggered from the debugger. But for modular kernel debuggers the hook would need to be exported, so in theory everyone could use it. In theory code review should catch that. Another alternative would be to readd the old namespaces patches I posted some time ago, this allowed to export symbols only to specific modules (but that would be also unfortunate for out of tree debuggers) Since we have nearly all other needed hooks for kernel debuggers anyways it doesn't really make sense to stop at panic. So this earlier requirements should be relaxed. Perhaps code review can solve the problem? -Andi -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/