linux-kernel - Re: [PATCH 35/35] x86: clean up speedctep-centrino and reduce cpumask_t usage From: Rusty Russell <rusty@...tcorp.com.au>

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Message-ID: <20081027162330.GB19476@elte.hu>
Date:	Mon, 27 Oct 2008 17:23:30 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Dave Jones <davej@...hat.com>,
	Rusty Russell <rusty@...tcorp.com.au>,
	Mike Travis <travis@....com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 35/35] x86: clean up speedctep-centrino and reduce
	cpumask_t usage From: Rusty Russell <rusty@...tcorp.com.au>


* Dave Jones <davej@...hat.com> wrote:

> On Thu, Oct 23, 2008 at 02:04:44PM +0200, Ingo Molnar wrote:
>  > 
>  > * Rusty Russell <rusty@...tcorp.com.au> wrote:
>  > 
>  > > On Thursday 23 October 2008 13:09:01 Mike Travis wrote:
>  > > > 1) The #ifdef CONFIG_HOTPLUG_CPU seems unnecessary these days.
>  > > > 2) The loop can simply skip over offline cpus, rather than creating a tmp
>  > > > mask.
>  > > > 3) set_mask is set to either a single cpu or all online cpus in a 
>  > > > policy. Since it's just used for set_cpus_allowed(), any offline cpus in a
>  > > > policy don't matter, so we can just use cpumask_of_cpu() or the
>  > > > policy->cpus.
>  > > 
>  > > Note that this cleanup stands alone; it's just that I read this code I 
>  > > couldn't help but tidy it up.
>  > > 
>  > > Ingo: do you just want to put this in your normal tree for sending to 
>  > > Linus?
>  > 
>  > hm, cpufreq stuff belongs into davej's tree.
>  > 
>  > i skipped #34 and #35 for now, we can live without them, correct?
> 
> If those patches are dependant upon the others, I can live with them 
> going through another tree.  There's nothing pending for 
> speedstep-centrino in cpufreq anyway.

ok - although the cleanups Rusty did look independent to me. We can 
just keep it in mind for the future, the whole topic is complex enough 
already as-is.

	Ingo
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