linux-kernel - Re: [PATCH] cpufreq: Simplify __cpufreq_remove

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Date:	Thu, 10 Jan 2013 11:31:35 +0530
From:	Viresh Kumar <viresh.kumar@...aro.org>
To:	rjw@...k.pl
Cc:	robin.randhawa@....com, Steve.Bannister@....com,
	Liviu.Dudau@....com, linaro-dev@...ts.linaro.org,
	patches@...aro.org, cpufreq@...r.kernel.org,
	linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org,
	shawn.guo@...aro.org, Viresh Kumar <viresh.kumar@...aro.org>
Subject: Re: [PATCH] cpufreq: Simplify __cpufreq_remove_dev()

On 9 January 2013 21:09, Viresh Kumar <viresh.kumar@...aro.org> wrote:
> On 9 January 2013 16:50, Viresh Kumar <viresh.kumar@...aro.org> wrote:
>> [Probably need to simplify cpufreq_add_dev() too, but that can be done as next
>> step.]
>
> I have tried that too, it is also pushed at:
>
> https://lkml.org/lkml/2012/12/16/5
>
> [Untested for now, will be doing it tomorrow]
>
> From: Viresh Kumar <viresh.kumar@...aro.org>
> Date: Wed, 9 Jan 2013 21:02:50 +0530
> Subject: [PATCH] cpufreq: Simplify cpufreq_add_dev()
>
> Currently cpufreq_add_dev() firsts allocated policy, calls ->init() and then
> checks if this cpu should be already managed or not. And if it already managed,
> free its policy.
>
> We can save all this if we somehow know if this cpu is managed or not in
> advance. policy->related_cpus contains list of all valid sibling cpus of
> policy->cpu. We can check this to know if current cpu is already managed.
>
> Signed-off-by: Viresh Kumar <viresh.kumar@...aro.org>

Tested-by: Viresh Kumar <viresh.kumar@...aro.org>
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