linux-kernel - Re: [patch] fix emergency reboot: call reboot notifier list if possible

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Message-ID: <20070117092233.GA30197@flint.arm.linux.org.uk>
Date:	Wed, 17 Jan 2007 09:22:33 +0000
From:	Russell King <rmk+lkml@....linux.org.uk>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Andrew Morton <akpm@...l.org>, linux-kernel@...r.kernel.org
Subject: Re: [patch] fix emergency reboot: call reboot notifier list if possible

On Wed, Jan 17, 2007 at 10:13:19AM +0100, Ingo Molnar wrote:
> we dont call the reboot notifiers during emergency reboot mainly because 
> it could be called from atomic context and reboot notifiers are a 
> blocking notifier list. But actually the kernel is often perfectly 
> reschedulable in this stage, so we could as well process the 
> reboot_notifier_list.

My experience has been that when there has been the need to use this
facility, the kernel hasn't been reschedulable.  (If it were then I'd
use "reboot -f" instead.)

If we're going to do this, can we make the new behaviour have a different
key combination so the original way remains?

-- 
Russell King
 Linux kernel    2.6 ARM Linux   - http://www.arm.linux.org.uk/
 maintainer of:
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