linux-kernel - Re: [patch v4 1/2] stop_machine: enable __stop_machine() to be called from the cpu online path

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Date:	Tue, 14 Jun 2011 10:09:15 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Suresh Siddha <suresh.b.siddha@...el.com>
Cc:	"tglx@...utronix.de" <tglx@...utronix.de>,
	"hpa@...or.com" <hpa@...or.com>,
	"trenn@...ell.com" <trenn@...ell.com>,
	"prarit@...hat.com" <prarit@...hat.com>,
	"tj@...nel.org" <tj@...nel.org>,
	"rusty@...tcorp.com.au" <rusty@...tcorp.com.au>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"Song, Youquan" <youquan.song@...el.com>,
	"stable@...nel.org" <stable@...nel.org>
Subject: Re: [patch v4 1/2] stop_machine: enable __stop_machine() to be
 called from the cpu online path


* Suresh Siddha <suresh.b.siddha@...el.com> wrote:

> On Mon, 2011-06-13 at 13:49 -0700, Suresh Siddha wrote:
> > On Mon, 2011-06-13 at 12:56 -0700, Ingo Molnar wrote:
> > > * Suresh Siddha <suresh.b.siddha@...el.com> wrote:
> > > 
> > > >  include/linux/stop_machine.h |   11 +++--
> > > >  kernel/stop_machine.c        |   91 ++++++++++++++++++++++++++++++++++++++++---
> > > >  2 files changed, 93 insertions(+), 9 deletions(-)
> > > 
> > > Btw., this is *way* too risky for a -stable backport.
> > > 
> > 
> > Ingo, we can have a smaller patch (appended) for the -stable. How do you
> > want to go ahead? Take this small patch for both mainline and -stable
> > and the two code cleanup/consolidation patches for -tip (to go into
> > 3.1?). Thanks.
> 
> oops. sent it too soon. fixed a !CONFIG_SMP compilation issue. 
> Updated simple patch appended.

See? It's by definition not a "simple" patch.

Thanks,

	Ingo
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