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Message-ID: <20080320194941.GD9570@linux.vnet.ibm.com>
Date:	Thu, 20 Mar 2008 12:49:41 -0700
From:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca>,
	akpm@...ux-foundation.org, linux-kernel@...r.kernel.org,
	Christoph Hellwig <hch@...radead.org>,
	Andrew Morton <akpm@...l.org>, Mike Mason <mmlnx@...ibm.com>,
	Dipankar Sarma <dipankar@...ibm.com>,
	David Smith <dsmith@...hat.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	Adrian Bunk <adrian.bunk@...ial.fi>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Subject: Re: [patch 1/4] Markers - depends on not PREEMPT_RCU

On Thu, Mar 20, 2008 at 08:03:38PM +0100, Ingo Molnar wrote:
> 
> * Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca> wrote:
> 
> > +++ linux-2.6-lttng/init/Kconfig	2008-03-19 18:27:43.000000000 -0400
> > @@ -742,6 +742,7 @@ config PROFILING
> >  
> >  config MARKERS
> >  	bool "Activate markers"
> > +	depends on !PREEMPT_RCU
> >  	help
> 
> Ugh, NACK. Please solve this properly... What kind of kernel 
> infrastructure is it what disables itself in the presence of another 
> piece of kernel infrastructure?

This is a reminder to me to get going on call_rcu_sched().  Until
I get that done and in, they don't have what they need to work
with preemptable RCU.  :-/

						Thanx, Paul
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