Subject: Re: [RFC PATCH 04/15] nohz_task: Stop the tick when the nohz task
 runs alone
From: Steven Rostedt <rostedt@goodmis.org>
To: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>,
        LKML <linux-kernel@vger.kernel.org>,
        Thomas Gleixner <tglx@linutronix.de>,
        "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
        Ingo Molnar <mingo@elte.hu>, Lai Jiangshan <laijs@cn.fujitsu.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        Anton Blanchard <anton@au1.ibm.com>,
        Tim Pepper <lnxninja@linux.vnet.ibm.com>
In-Reply-To: <20101221132226.GB1750@nowhere>
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	 <1292916958.5021.171.camel@laptop>  <20101221132226.GB1750@nowhere>
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Date: Tue, 21 Dec 2010 09:34:39 -0500
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On Tue, 2010-12-21 at 14:22 +0100, Frederic Weisbecker wrote:
> On Tue, Dec 21, 2010 at 08:35:58AM +0100, Peter Zijlstra wrote:

> > No, and that worries me, you don't even seem to know what the tick does
> > and yet you're working on stopping it.
> 
> Yeah, I've been focusing a lot on preemption and rcu because they seemed
> to be the trickiest part of the thing, and I in the meantime I just forgot
> the rest or tagged it too quickly as details to deal with later. And I
> finally forgot them :)
> 
> Bah it's a first take, it can only improve ;)

Exactly!

This is an RFC, a "release early, release often" approach. And you Cc'd
all the right people. This is not something I expect to make into 2.6.38
though ;-)

-- Steve


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