linux-kernel - Re: [PATCH RFC V3 2/8] stop_machine: make stop_machine safe and efficient to call early

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Date:	Wed, 05 Oct 2011 11:45:25 +1030
From:	Rusty Russell <rusty@...tcorp.com.au>
To:	Jeremy Fitzhardinge <jeremy@...p.org>,
	Steven Rostedt <rostedt@...dmis.org>
Cc:	"David S. Miller" <davem@...emloft.net>,
	David Daney <david.daney@...ium.com>,
	Michael Ellerman <michael@...erman.id.au>,
	Jan Glauber <jang@...ux.vnet.ibm.com>,
	Jason Baron <jbaron@...hat.com>,
	the arch/x86 maintainers <x86@...nel.org>,
	Xen Devel <xen-devel@...ts.xensource.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Jeremy Fitzhardinge <jeremy.fitzhardinge@...rix.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"H. Peter Anvin" <hpa@...ux.intel.com>, Ingo Molnar <mingo@...e.hu>
Subject: Re: [PATCH RFC V3 2/8] stop_machine: make stop_machine safe and efficient to call early

On Tue,  4 Oct 2011 12:18:03 -0700, Jeremy Fitzhardinge <jeremy@...p.org> wrote:
> From: Jeremy Fitzhardinge <jeremy.fitzhardinge@...rix.com>
> 
> Make stop_machine() safe to call early in boot, before stop_machine()
> has been set up, by simply calling the callback function directly if
> there's only one CPU online.

Not that you need this, since it's >90% Tejun's code now, but:

Acked-by: Rusty Russell <rusty@...tcorp.com.au>

Cheers,
Rusty.
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