linux-kernel - Re: [PATCH 00/32] [RFC] nohz/cpuset: Start discussions on nohz CPUs

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Date:	Fri, 02 Nov 2012 11:14:01 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Christoph Lameter <cl@...ux.com>
Cc:	linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Peter Zijlstra <peterz@...radead.org>,
	Clark Williams <clark.williams@...il.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Li Zefan <lizf@...fujitsu.com>, Ingo Molnar <mingo@...nel.org>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Mike Galbraith <efault@....de>
Subject: Re: [PATCH 00/32] [RFC] nohz/cpuset: Start discussions on nohz CPUs

On Fri, 2012-11-02 at 15:03 +0000, Christoph Lameter wrote:
> On Fri, 2 Nov 2012, Steven Rostedt wrote:
> 
> > > also it would be best to sync this conceptually with the processors
> > > enabled for rcu processing.
> >
> > Processors can be disabled for rcu processing? Or are you talking about
> > Paul's new work of offloading rcu callbacks?
> 
> Yes. Paul's new work to remove rcu processing from processors. That needs
> to be synced configuration wise somehow. It does not make sense to process
> rcu callbacks on processors where the timer tick does not work anymore.

Don't worry, Paul is working with us too ;-)

-- Steve


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