linux-kernel - Re: [PATCH] modules fix incorrect percpu usage

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Message-ID: <20100330135047.GB20673@Krystal>
Date:	Tue, 30 Mar 2010 09:50:47 -0400
From:	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	linux-kernel@...r.kernel.org, stable <stable@...nel.org>,
	Randy Dunlap <randy.dunlap@...cle.com>,
	Eric Dumazet <dada1@...mosbay.com>,
	Rusty Russell <rusty@...tcorp.com.au>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Tejun Heo <tj@...nel.org>, Ingo Molnar <mingo@...e.hu>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Greg Kroah-Hartman <gregkh@...e.de>
Subject: Re: [PATCH] modules fix incorrect percpu usage

* Steven Rostedt (rostedt@...dmis.org) wrote:
> On Mon, 2010-03-29 at 23:36 -0400, Mathieu Desnoyers wrote:
> > * Mathieu Desnoyers (mathieu.desnoyers@...icios.com) wrote:
> > > Should use per_cpu_ptr() to obfuscate the per cpu pointers (RELOC_HIDE is needed
> > > for per cpu pointers).
> > > 
> > > Introduced by commit:
> > > 
> > > module.c: commit 6b588c18f8dacfa6d7957c33c5ff832096e752d3
> > > 
> > > This patch should be queued for the stable branch, for kernels 2.6.29.x to
> > > 2.6.33.x.
> > > (tested on 2.6.33.1 x86_64)
> > 
> > It's actually needed for mainline too (2.6.34-rc2).
> 
> Then all you need to do is submit it for mainline with a 
> "Cc: stable@...nel.org" as you did below. It will then automatically be
> added to the stable queue when Linus pulls it.

OK, thanks for the info.

Mathieu

> 
> -- Steve
> 
> > 
> > Thanks,
> > 
> > Mathieu
> > 
> > > 
> > > Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
> > > CC: Randy Dunlap <randy.dunlap@...cle.com>
> > > CC: Eric Dumazet <dada1@...mosbay.com>
> > > CC: Rusty Russell <rusty@...tcorp.com.au>
> > > CC: Peter Zijlstra <a.p.zijlstra@...llo.nl>
> > > CC: Tejun Heo <tj@...nel.org>
> > > CC: Ingo Molnar <mingo@...e.hu>
> > > CC: Andrew Morton <akpm@...ux-foundation.org>
> > > CC: Linus Torvalds <torvalds@...ux-foundation.org>
> > > CC: Greg Kroah-Hartman <gregkh@...e.de>
> > > CC: Steven Rostedt <rostedt@...dmis.org>
> > > CC: stable <stable@...nel.org>
> > > ---
> > >  kernel/module.c |    2 +-
> > >  1 file changed, 1 insertion(+), 1 deletion(-)
> > > 
> > > 
> 

-- 
Mathieu Desnoyers
Operating System Efficiency R&D Consultant
EfficiOS Inc.
http://www.efficios.com
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