linux-kernel - Re: [patch 1/2] add ALL_CPUS option to stop_machine

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Message-ID: <47CC983C.8050000@qualcomm.com>
Date:	Mon, 03 Mar 2008 16:30:52 -0800
From:	Max Krasnyanskiy <maxk@...lcomm.com>
To:	Rusty Russell <rusty@...tcorp.com.au>
CC:	Ingo Molnar <mingo@...e.hu>, Jason Baron <jbaron@...hat.com>,
	Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca>,
	akpm@...ux-foundation.org, linux-kernel@...r.kernel.org,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Subject: Re: [patch 1/2] add ALL_CPUS option to stop_machine_run()

Hi Rusty,

> On Saturday 01 March 2008 06:15:59 Ingo Molnar wrote:
>> Right now the answer is: "if you want to do hard RT then avoid doing
>> things like loading modules". (which you should avoid while doing
>> hard-RT anyway)
> 
> Hi Ingo,
> 
>      I agree, but Max is doing a service by making more people aware of the 
> limitations of stop_machine so they don't sprinkle it around like candy :)
Exactly. I'm glad we're on same page on this.

> I think the module load case can be reasonably fixed; it's in my backlog now.
Great. I might get some time later this week to think about this some more and 
try things out. So if you have ideas/suggestions let me know.

Max
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