From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755727Ab1KUJy1 (ORCPT ); Mon, 21 Nov 2011 04:54:27 -0500 Received: from e23smtp06.au.ibm.com ([202.81.31.148]:60446 "EHLO e23smtp06.au.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754848Ab1KUJy0 (ORCPT ); Mon, 21 Nov 2011 04:54:26 -0500 Date: Mon, 21 Nov 2011 15:24:05 +0530 From: "K.Prasad" To: linux-kernel@vger.kernel.org Cc: Vivek Goyal , Borislav Petkov , "Luck, Tony" , "Eric W. Biederman" , anderson@redhat.com, tachibana@mxm.nes.nec.co.jp, oomichi@mxs.nes.nec.co.jp, Valdis.Kletnieks@vt.edu, Nick Bowler Subject: [RFC Patch 0/2] Slimdump framework using CRASH_REASON - v2 Message-ID: <20111121095405.GA2289@in.ibm.com> Reply-To: prasad@linux.vnet.ibm.com MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.21 (2010-09-15) x-cbid: 11112023-7014-0000-0000-0000001D67D8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi All, In furtherance of the previous discussion regarding 'slimdump' (refer: http://article.gmane.org/gmane.linux.kernel/1204967), it was decided that, - An entry in VMCOREINFO elf-note be added to denote the cause of crash, instead of creating a new elf-note. - Upstream tools such as 'makedumpfile' and 'crash' be modified to recognise this string and inform the user accordingly. Accordingly, this new version of the patchset makes the following changes Changelog - version 2 ----------------------- (First version posted here: http://article.gmane.org/gmane.linux.kernel/1198435) - Append VMCOREINFO elf-note with a new variable CRASH_REASON whose value will be populated using arch_add_crash_reason() function. - Define arch_add_crash_reason() in the x86 MCE path to return "PANIC_MCE" in the panic path of MCE. - 'makedumpfile' tool is taught to recognise PANIC_MCE string as one value of CRASH_REASON for which 'slimdump' must be captured. - Changes to 'crash' tool are not included, and is deferred till there's consensus to the kernel and makedumpfile patches. Let me know your comments on this. Thanks, K.Prasad