linux-kernel - Re: [patch] add kdump_after

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Message-ID: <20070726140702.GA8949@suse.de>
Date:	Thu, 26 Jul 2007 16:07:02 +0200
From:	Bernhard Walle <bwalle@...e.de>
To:	Takenori Nagano <t-nagano@...jp.nec.com>
Cc:	kexec@...ts.infradead.org, linux-kernel@...r.kernel.org,
	k-miyoshi@...jp.nec.com, Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [patch] add kdump_after_notifier

* Takenori Nagano <t-nagano@...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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