From: Bernhard Walle <bwalle@suse.de>
To: Takenori Nagano <t-nagano@ah.jp.nec.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
k-miyoshi@cb.jp.nec.com, kexec@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: Re: [patch] add kdump_after_notifier
Date: Thu, 26 Jul 2007 16:07:02 +0200 [thread overview]
Message-ID: <20070726140702.GA8949@suse.de> (raw)
In-Reply-To: <469F55D0.4050203@ah.jp.nec.com>
* Takenori Nagano <t-nagano@ah.jp.nec.com> [2007-07-19 14:15]:
>
> In latest kernel, we can't use panic_notifier_list if kdump is enabled.
> panic_notifier_list is very useful function for debug, failover, etc...
>
> So this patch adds a control file /proc/sys/kernel/dump_after_notifier
> and resolves a problem users can not use both kdump and panic_notifier_list
> at the same time.
>
> kdump_after_notifier = 0
> -> panic()
> -> crash_kexec(NULL)
>
> kdump_after_notifier = 1
> -> panic()
> -> atomic_notifier_call_chain(&panic_notifier_list, 0, buf);
> -> crash_kexec(NULL)
What's problematic about this patch? I also would like to see that
feature.
Thanks,
Bernhard
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WARNING: multiple messages have this Message-ID (diff)
From: Bernhard Walle <bwalle@suse.de>
To: Takenori Nagano <t-nagano@ah.jp.nec.com>
Cc: kexec@lists.infradead.org, linux-kernel@vger.kernel.org,
k-miyoshi@cb.jp.nec.com,
Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [patch] add kdump_after_notifier
Date: Thu, 26 Jul 2007 16:07:02 +0200 [thread overview]
Message-ID: <20070726140702.GA8949@suse.de> (raw)
In-Reply-To: <469F55D0.4050203@ah.jp.nec.com>
* Takenori Nagano <t-nagano@ah.jp.nec.com> [2007-07-19 14:15]:
>
> In latest kernel, we can't use panic_notifier_list if kdump is enabled.
> panic_notifier_list is very useful function for debug, failover, etc...
>
> So this patch adds a control file /proc/sys/kernel/dump_after_notifier
> and resolves a problem users can not use both kdump and panic_notifier_list
> at the same time.
>
> kdump_after_notifier = 0
> -> panic()
> -> crash_kexec(NULL)
>
> kdump_after_notifier = 1
> -> panic()
> -> atomic_notifier_call_chain(&panic_notifier_list, 0, buf);
> -> crash_kexec(NULL)
What's problematic about this patch? I also would like to see that
feature.
Thanks,
Bernhard
next prev parent reply other threads:[~2007-07-26 14:07 UTC|newest]
Thread overview: 77+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-07-19 12:15 [patch] add kdump_after_notifier Takenori Nagano
2007-07-19 12:15 ` Takenori Nagano
2007-07-26 14:07 ` Bernhard Walle [this message]
2007-07-26 14:07 ` Bernhard Walle
2007-07-26 15:32 ` Vivek Goyal
2007-07-26 15:32 ` Vivek Goyal
2007-07-26 15:34 ` Bernhard Walle
2007-07-26 15:34 ` Bernhard Walle
2007-07-26 15:44 ` Vivek Goyal
2007-07-26 15:44 ` Vivek Goyal
2007-07-26 15:47 ` Bernhard Walle
2007-07-26 15:47 ` Bernhard Walle
2007-07-26 15:54 ` Vivek Goyal
2007-07-26 15:54 ` Vivek Goyal
2007-07-26 16:14 ` Bernhard Walle
2007-07-26 16:14 ` Bernhard Walle
2007-07-26 16:21 ` Bernhard Walle
2007-07-26 16:21 ` Bernhard Walle
2007-07-26 23:28 ` Takenori Nagano
2007-07-26 23:28 ` Takenori Nagano
2007-07-30 9:16 ` Vivek Goyal
2007-07-30 9:16 ` Vivek Goyal
2007-07-30 13:42 ` Eric W. Biederman
2007-07-30 13:42 ` Eric W. Biederman
2007-07-31 5:55 ` Takenori Nagano
2007-07-31 5:55 ` Takenori Nagano
2007-07-31 6:53 ` Eric W. Biederman
2007-07-31 6:53 ` Eric W. Biederman
2007-08-01 9:26 ` Takenori Nagano
2007-08-01 9:26 ` Takenori Nagano
2007-08-01 10:00 ` Eric W. Biederman
2007-08-01 10:00 ` Eric W. Biederman
2007-08-02 8:11 ` Takenori Nagano
2007-08-02 8:11 ` Takenori Nagano
2007-08-02 11:28 ` Vivek Goyal
2007-08-02 11:28 ` Vivek Goyal
2007-08-03 4:05 ` Keith Owens
2007-08-03 4:05 ` Keith Owens
2007-08-03 6:25 ` Andrew Morton
2007-08-03 6:25 ` Andrew Morton
2007-08-03 6:34 ` Keith Owens
2007-08-03 6:34 ` Keith Owens
2007-08-03 7:37 ` Andrew Morton
2007-08-03 7:37 ` Andrew Morton
2007-08-03 7:10 ` Eric W. Biederman
2007-08-03 7:10 ` Eric W. Biederman
2007-08-05 11:07 ` Vivek Goyal
2007-08-05 11:07 ` Vivek Goyal
2007-08-14 8:34 ` Takenori Nagano
2007-08-14 8:34 ` Takenori Nagano
2007-08-14 8:37 ` Bernhard Walle
2007-08-14 8:37 ` Bernhard Walle
2007-08-14 8:48 ` Takenori Nagano
2007-08-14 8:48 ` Takenori Nagano
2007-08-14 8:53 ` Bernhard Walle
2007-08-14 8:53 ` Bernhard Walle
2007-08-14 13:24 ` Vivek Goyal
2007-08-14 13:24 ` Vivek Goyal
2007-08-16 9:26 ` Takenori Nagano
2007-08-16 9:26 ` Takenori Nagano
2007-08-16 9:45 ` Bernhard Walle
2007-08-16 9:45 ` Bernhard Walle
2007-08-17 10:56 ` Vivek Goyal
2007-08-17 10:56 ` Vivek Goyal
2007-08-21 7:45 ` Takenori Nagano
2007-08-21 7:45 ` Takenori Nagano
2007-08-23 3:52 ` Vivek Goyal
2007-08-23 3:52 ` Vivek Goyal
2007-08-21 13:18 ` Jay Lan
2007-08-21 13:18 ` Jay Lan
2007-08-21 13:21 ` Bernhard Walle
2007-08-21 13:21 ` Bernhard Walle
2007-08-23 3:56 ` Vivek Goyal
2007-08-23 3:56 ` Vivek Goyal
2007-08-23 17:34 ` Jay Lan
2007-08-23 17:34 ` Jay Lan
2007-10-04 11:30 ` Takenori Nagano
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