Commit 9a2a9ebc authored by Rafael J. Wysocki's avatar Rafael J. Wysocki
Browse files

cpufreq: Introduce governor flags 



A new cpufreq governor flag will be added subsequently, so replace
the bool dynamic_switching fleid in struct cpufreq_governor with a
flags field and introduce CPUFREQ_GOV_DYNAMIC_SWITCHING to set for
the "dynamic switching" governors instead of it.

No intentional functional impact.

Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: default avatarViresh Kumar <viresh.kumar@linaro.org>
parent f8394f23

drivers/cpufreq/cpufreq.c

+1 −1
Original line number Diff line number Diff line
@@ -2254,7 +2254,7 @@ static int cpufreq_init_governor(struct cpufreq_policy *policy) 
		return -EINVAL;



	/* Platform doesn't want dynamic frequency switching ? */

	if (policy->governor->dynamic_switching &&

	if (policy->governor->flags & CPUFREQ_GOV_DYNAMIC_SWITCHING &&

	    cpufreq_driver->flags & CPUFREQ_NO_AUTO_DYNAMIC_SWITCHING) {

		struct cpufreq_governor *gov = cpufreq_fallback_governor();

drivers/cpufreq/cpufreq_governor.h

+1 −1
Original line number Diff line number Diff line
@@ -156,7 +156,7 @@ void cpufreq_dbs_governor_limits(struct cpufreq_policy *policy); 
#define CPUFREQ_DBS_GOVERNOR_INITIALIZER(_name_)			\

	{								\

		.name = _name_,						\

		.dynamic_switching = true,				\

		.flags = CPUFREQ_GOV_DYNAMIC_SWITCHING,			\

		.owner = THIS_MODULE,					\

		.init = cpufreq_dbs_governor_init,			\

		.exit = cpufreq_dbs_governor_exit,			\

include/linux/cpufreq.h

+7 −2
Original line number Diff line number Diff line
@@ -570,12 +570,17 @@ struct cpufreq_governor { 
					 char *buf);

	int	(*store_setspeed)	(struct cpufreq_policy *policy,

					 unsigned int freq);

	/* For governors which change frequency dynamically by themselves */

	bool			dynamic_switching;

	struct list_head	governor_list;

	struct module		*owner;

	u8			flags;

};



/* Governor flags */



/* For governors which change frequency dynamically by themselves */

#define CPUFREQ_GOV_DYNAMIC_SWITCHING	BIT(0)





/* Pass a target to the cpufreq driver */

unsigned int cpufreq_driver_fast_switch(struct cpufreq_policy *policy,

					unsigned int target_freq);

kernel/sched/cpufreq_schedutil.c

+1 −1
Original line number Diff line number Diff line
@@ -881,7 +881,7 @@ static void sugov_limits(struct cpufreq_policy *policy) 
struct cpufreq_governor schedutil_gov = {

	.name			= "schedutil",

	.owner			= THIS_MODULE,

	.dynamic_switching	= true,

	.flags			= CPUFREQ_GOV_DYNAMIC_SWITCHING,

	.init			= sugov_init,

	.exit			= sugov_exit,

	.start			= sugov_start,

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