linux-kernel - Re: [RFC][PATCH 00/32] Nohz cpusets v2 (adaptive tickless kernel)

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Date:	Fri, 30 Mar 2012 07:10:43 -0700
From:	Kevin Hilman <khilman@...com>
To:	Geoff Levand <geoff@...radead.org>
Cc:	Frederic Weisbecker <fweisbec@...il.com>,
	LKML <linux-kernel@...r.kernel.org>,
	linaro-sched-sig@...ts.linaro.org,
	Thomas Gleixner <tglx@...utronix.de>,
	Stephen Hemminger <shemminger@...tta.com>,
	Daniel Lezcano <daniel.lezcano@...aro.org>,
	Chris Metcalf <cmetcalf@...era.com>,
	Ingo Molnar <mingo@...nel.org>,
	Gilad Ben Yossef <gilad@...yossef.com>,
	Alessio Igor Bogani <abogani@...nel.org>,
	Avi Kivity <avi@...hat.com>,
	Max Krasnyansky <maxk@...lcomm.com>,
	Zen Lin <zen@...nhuawei.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	Christoph Lameter <cl@...ux.com>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [RFC][PATCH 00/32] Nohz cpusets v2 (adaptive tickless kernel)

Geoff Levand <geoff@...radead.org> writes:

> Hi All,
>
> On Fri, 2012-03-30 at 02:45 +0200, Frederic Weisbecker wrote:
>> On Thu, Mar 29, 2012 at 05:33:46PM -0700, Kevin Hilman wrote:
>> > For anyone interested in collaborating on ARM support, my
>> > work-in-progress branch is below[1] based on Frederic's cpuset-v2
>> > branch.  Patches and testing welcome.
>> > 
>> > [1] git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux.git wip/arm-nohz-cpusets
>> 
>> Nice! Thanks for working on this. You may want to work with Geoff Levand who's working
>> on the ARM port too.
>
> You can see my work here:
>
>   http://git.kernel.org/?p=linux/kernel/git/geoff/nohz.git

Great! Will have a closer look.

A quick look suggests we've done almost exactly the same thing.  Guess
that's a good sign. :) 

> I also put a simple test I got from Frederic here:
>
>   http://git.kernel.org/?p=linux/kernel/git/geoff/nohz-tests.git

Great, having a common test to compare results was going to be my next
question.  I'll start playing with these next week.   Thanks.

> Feel free to expand on either!

> Kevin, I'll take a look at your work, I guess it has the same things as
> mine.  

Yeah, we've done basically the same thing.  I see though that you've
also already handled some RCU idle cases that I hadn't.

Since you're a little further than me, I'll switch you yours and 
start using that as the base

> Will you be at the Collaboration Summit next week?

Unfortunately, no.

Kevin
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