Messages in this thread | | | From | Motohiro Kosaki <> | 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 |
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> -----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 <masami.hiramatsu.pt@hitachi.com> > Cc: Eric Biederman <ebiederm@xmission.com> > Cc: Vivek Goyal <vgoyal@redhat.com> > Cc: Andrew Morton <akpm@linux-foundation.org> > Cc: Yoshihiro YUNOMAE <yoshihiro.yunomae.ez@hitachi.com> > Cc: Satoru MORIYA <satoru.moriya.br@hitachi.com> > Cc: Motohiro Kosaki <Motohiro.Kosaki@us.fujitsu.com> > Cc: Tomoki Sekiyama <tomoki.sekiyama@hds.com>
I have no objection. Acked-by: KOSAKI Motohiro <Kosaki.motohiro@jp.fujitsu.com>
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