[PATCH v4 1/6] cpufreq: make scaling_boost_freqs sysfs attr available when boost is enabled

[Rafael J. Wysocki]

On Friday, August 07, 2015 05:07:39 PM Viresh Kumar wrote:
> On 07-08-15, 13:12, Bartlomiej Zolnierkiewicz wrote:
> > >From 993ebb6fc632ec7b61654c9610c90ff4dca4be34 Mon Sep 17 00:00:00 2001
> > From: Bartlomiej Zolnierkiewicz <b.zolnierkie at samsung.com>
> > Date: Fri, 7 Aug 2015 13:07:51 +0200
> > Subject: [PATCH] cpufreq-dt: make scaling_boost_freqs sysfs attr available
> >  when boost is enabled
> > 
> > Make scaling_boost_freqs sysfs attribute is available when
> > cpufreq-dt driver is used and boost support is enabled.
> > 
> > Cc: Thomas Abraham <thomas.ab at samsung.com>
> > Cc: Javier Martinez Canillas <javier at osg.samsung.com>
> > Cc: Krzysztof Kozlowski <k.kozlowski at samsung.com>
> > Suggested-by: Viresh Kumar <viresh.kumar at linaro.org>
> > Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie at samsung.com>
> > ---
> >  drivers/cpufreq/cpufreq-dt.c | 11 ++++++++++-
> >  include/linux/cpufreq.h      |  1 +
> >  2 files changed, 11 insertions(+), 1 deletion(-)
> > 
> > diff --git a/drivers/cpufreq/cpufreq-dt.c b/drivers/cpufreq/cpufreq-dt.c
> > index b9259ab..c6a3b98 100644
> > --- a/drivers/cpufreq/cpufreq-dt.c
> > +++ b/drivers/cpufreq/cpufreq-dt.c
> > @@ -36,6 +36,12 @@ struct private_data {
> >  	unsigned int voltage_tolerance; /* in percentage */
> >  };
> >  
> > +static struct freq_attr *cpufreq_dt_attr[] = {
> > +	&cpufreq_freq_attr_scaling_available_freqs,
> > +	NULL,   /* Extra space for boost-attr if required */
> > +	NULL,
> > +};
> > +
> >  static int set_target(struct cpufreq_policy *policy, unsigned int index)
> >  {
> >  	struct dev_pm_opp *opp;
> > @@ -182,6 +188,8 @@ try_again:
> >  	return ret;
> >  }
> >  
> > +static struct cpufreq_driver dt_cpufreq_driver;
> > +
> >  static int cpufreq_init(struct cpufreq_policy *policy)
> >  {
> >  	struct cpufreq_frequency_table *freq_table;
> > @@ -336,6 +344,7 @@ static int cpufreq_init(struct cpufreq_policy *policy)
> >  		ret = cpufreq_enable_boost_support();
> >  		if (ret)
> >  			goto out_free_cpufreq_table;
> > +		cpufreq_dt_attr[1] = &cpufreq_freq_attr_scaling_boost_freqs;
> >  	}
> >  
> >  	policy->cpuinfo.transition_latency = transition_latency;
> > @@ -411,7 +420,7 @@ static struct cpufreq_driver dt_cpufreq_driver = {
> >  	.exit = cpufreq_exit,
> >  	.ready = cpufreq_ready,
> >  	.name = "cpufreq-dt",
> > -	.attr = cpufreq_generic_attr,
> > +	.attr = cpufreq_dt_attr,
> >  };
> >  
> >  static int dt_cpufreq_probe(struct platform_device *pdev)
> > diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h
> > index 95f0186..657542d 100644
> > --- a/include/linux/cpufreq.h
> > +++ b/include/linux/cpufreq.h
> > @@ -609,6 +609,7 @@ struct cpufreq_frequency_table *cpufreq_frequency_get_table(unsigned int cpu);
> >  
> >  /* the following are really really optional */
> >  extern struct freq_attr cpufreq_freq_attr_scaling_available_freqs;
> > +extern struct freq_attr cpufreq_freq_attr_scaling_boost_freqs;
> >  extern struct freq_attr *cpufreq_generic_attr[];
> >  int cpufreq_table_validate_and_show(struct cpufreq_policy *policy,
> >  				      struct cpufreq_frequency_table *table);
> 
> Acked-by: Viresh Kumar <viresh.kumar at linaro.org>

And what exactly am I supposed to do with this?

Have a robot that will pick up all patches ACKed by you magically or what?

Rafael