Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753959AbaDQPOH (ORCPT ); Thu, 17 Apr 2014 11:14:07 -0400 Received: from fujitsu25.fnanic.fujitsu.com ([192.240.6.15]:56423 "EHLO fujitsu25.fnanic.fujitsu.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753306AbaDQPN4 (ORCPT ); Thu, 17 Apr 2014 11:13:56 -0400 From: Motohiro Kosaki To: Masami Hiramatsu , "linux-kernel@vger.kernel.org" , Vivek Goyal , Eric Biederman CC: Andrew Morton , Yoshihiro YUNOMAE , Satoru MORIYA , Tomoki Sekiyama Date: Thu, 17 Apr 2014 08:03:10 -0700 Subject: RE: [PATCH v2] kernel/panic: Add "crash_kexec_post_notifiers" option for kdump after panic_notifers Thread-Topic: [PATCH v2] kernel/panic: Add "crash_kexec_post_notifiers" option for kdump after panic_notifers Thread-Index: Ac9Z6vDiYqU/xcx5QkaB2/1uzXeJZwAYxEEw Message-ID: <6B2BA408B38BA1478B473C31C3D2074E30986F07FE@SV-EXCHANGE1.Corp.FC.LOCAL> References: <20140417031250.1150.26322.stgit@ltc230.yrl.intra.hitachi.co.jp> In-Reply-To: <20140417031250.1150.26322.stgit@ltc230.yrl.intra.hitachi.co.jp> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: en-US Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:5.11.96,1.0.14,0.0.0000 definitions=2014-04-17_04:2014-04-17,2014-04-17,1970-01-01 signatures=0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from base64 to 8bit by mail.home.local id s3HFEDHM013820 > -----Original Message----- > From: Masami Hiramatsu [mailto:masami.hiramatsu.pt@hitachi.com] > Sent: Wednesday, April 16, 2014 8:13 PM > To: linux-kernel@vger.kernel.org; Vivek Goyal; Eric Biederman > Cc: Andrew Morton; Yoshihiro YUNOMAE; Satoru MORIYA; Motohiro Kosaki; Tomoki Sekiyama > Subject: [PATCH v2] kernel/panic: Add "crash_kexec_post_notifiers" option for kdump after panic_notifers > > Add a "crash_kexec_post_notifiers" option to run kdump after running panic_notifiers and dump kmsg. This can help rare situations > which kdump drops in failure because of unstable crashed kernel or hardware failure (memory corruption on critical data/code), or > the 2nd kernel is already broken by the 1st kernel (it's a broken behavior, but who can guarantee that the "crashed" kernel works > correctly?). > > Usage: add "crash_kexec_post_notifiers" to kernel boot option. > > Note that this actually increases risks of the failure of kdump. > This option should be set only if you worry about the rare case of kdump failure rather than increasing the chance of success. > > Changes from v1: > - Rename late_kdump option to crash_kexec_post_notifiers. > - Remove unneeded warning message. > > Signed-off-by: Masami Hiramatsu > Cc: Eric Biederman > Cc: Vivek Goyal > Cc: Andrew Morton > Cc: Yoshihiro YUNOMAE > Cc: Satoru MORIYA > Cc: Motohiro Kosaki > Cc: Tomoki Sekiyama I have no objection. Acked-by: KOSAKI Motohiro ????{.n?+???????+%?????ݶ??w??{.n?+????{??G?????{ay?ʇڙ?,j??f???h?????????z_??(?階?ݢj"???m??????G????????????&???~???iO???z??v?^?m???? ????????I?