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From: Russell King <rmk+lkml@arm.linux.org.uk>
To: Ingo Molnar <mingo@elte.hu>
Cc: Andrew Morton <akpm@osdl.org>, linux-kernel@vger.kernel.org
Subject: Re: [patch] fix emergency reboot: call reboot notifier list if possible
Date: Wed, 17 Jan 2007 09:22:33 +0000	[thread overview]
Message-ID: <20070117092233.GA30197@flint.arm.linux.org.uk> (raw)
In-Reply-To: <20070117091319.GA30036@elte.hu>

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:

  reply	other threads:[~2007-01-17  9:22 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-01-17  9:13 Ingo Molnar
2007-01-17  9:22 ` Russell King [this message]
2007-01-17  9:39   ` Ingo Molnar
2007-01-17 10:03     ` Andrew Morton
2007-01-17 10:25       ` Ingo Molnar
2007-01-23 19:57       ` Pavel Machek
2007-01-24 16:30         ` Randy Dunlap
2007-01-24 17:49           ` linux-os (Dick Johnson)
2007-01-17  9:51 ` [patch] KVM: do VMXOFF upon reboot Ingo Molnar
2007-01-17 10:02   ` Ingo Molnar
2007-01-21 10:17     ` Avi Kivity

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