From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ryan Underwood <nemesis@icequake.net>
Subject: Re: writing a cpufreq driver
Date: Fri, 22 Sep 2006 11:00:25 -0500
Message-ID: <20060922160025.GA4459@dbz.icequake.net>
References: <20060921184833.GC1216@dbz.icequake.net>
	<20060922153948.GN4945@poupinou.org>
Reply-To: nemesis@icequake.net
Mime-Version: 1.0
Return-path: <cpufreq-bounces+glkc-cpufreq=m.gmane.org@lists.linux.org.uk>
Content-Disposition: inline
In-Reply-To: <20060922153948.GN4945@poupinou.org>
List-Id: <cpufreq.vger.kernel.org>
List-Unsubscribe: <http://lists.linux.org.uk/mailman/listinfo/cpufreq>,
	<mailto:cpufreq-request@lists.linux.org.uk?subject=unsubscribe>
List-Archive: <http://lists.linux.org.uk/mailman/private/cpufreq>
List-Post: <mailto:cpufreq@lists.linux.org.uk>
List-Help: <mailto:cpufreq-request@lists.linux.org.uk?subject=help>
List-Subscribe: <http://lists.linux.org.uk/mailman/listinfo/cpufreq>,
	<mailto:cpufreq-request@lists.linux.org.uk?subject=subscribe>
Sender: cpufreq-bounces@lists.linux.org.uk
Errors-To: cpufreq-bounces+glkc-cpufreq=m.gmane.org+glkc-cpufreq=m.gmane.org@lists.linux.org.uk
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
To: Bruno Ducrot <ducrot@poupinou.org>
Cc: Cpufreq@lists.linux.org.uk, nemesis@icequake.net


On Fri, Sep 22, 2006 at 05:39:49PM +0200, Bruno Ducrot wrote:
> That may indicate TSC frequency is constant.  Try to add a
> .flags = CPUFREQ_CONST_LOOPS
> onto the driver like this:
> 
> > static struct cpufreq_driver toshiba_freq_driver = {
> > 	.get	= toshiba_freq_get_cpu_frequency,
> > 	.verify	= toshiba_freq_verify,
> > 	.target	= toshiba_freq_target,
> > 	.init	= toshiba_freq_cpu_init,
> > 	.exit	= toshiba_freq_cpu_exit,
> > 	.name	= "toshiba_freq",
> > 	.owner	= THIS_MODULE,
> > 	.attr	= toshiba_freq_attr,
>         .flags	= CPUFREQ_CONST_LOOPS,
> 	^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> 	HERE
> > };

That worked.  Looks like the CPU MHZ isn't changing really (on this
machine at least).

-- 
Ryan Underwood, <nemesis@icequake.net>