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

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Date:	Mon, 10 Oct 2011 09:34:05 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Rusty Russell <rusty@...tcorp.com.au>
Cc:	Jeremy Fitzhardinge <jeremy@...p.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	"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>
Subject: Re: [PATCH RFC V3 2/8] stop_machine: make stop_machine safe and
 efficient to call early


* Rusty Russell <rusty@...tcorp.com.au> wrote:

> 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>

hey, extra review is always useful.

Jeremy, Tejun, what's the expected merge path of these changes?

Thanks,

	Ingo
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