linux-kernel - Re: [PATCH 0/5] Add P state driver for Intel Core Processors

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Message-ID: <6075901.uWCJMxDDFf@vostro.rjw.lan>
Date:	Wed, 13 Feb 2013 22:17:58 +0100
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Dirk Brandewie <dirk.brandewie@...il.com>
Cc:	Dave Jones <davej@...hat.com>, linux-kernel@...r.kernel.org,
	cpufreq@...r.kernel.org
Subject: Re: [PATCH 0/5] Add P state driver for Intel Core Processors

On Wednesday, February 13, 2013 08:38:04 AM Dirk Brandewie wrote:
> Hi Dave,
> 
> On 02/12/2013 01:49 PM, Dave Jones wrote:
> > On Wed, Feb 06, 2013 at 09:02:07AM -0800, dirk.brandewie@...il.com wrote:
> >
> > Won't you also need to patch drivers/cpufreq/acpi-cpufreq.c to not load
> > on the processors that you want this driver to run on ?
> >
> > 	Dave
> >
> 
> For the case where both are built-in the load order works my driver uses
> device_initcall() and acpi_cpufreq uses late_initcall().
> 
> For the case where both are a module (which I was sure I tested) you are right
> I will have to do something.
> 
> For now I propose to make my driver built-in only while I sort out the right
> solution for the module build.  Does this seem reasonable to everyone?

Well, I've been saying I think your driver should be non-modular from the
start. :-)

May I ask for a kernel command line switch to prevent it from registering if
the user doesn't actually want it, though, if it's going to be non-modular?

Rafael


-- 
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.
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