Commit 218f6687 authored by Rafael J. Wysocki's avatar Rafael J. Wysocki
Browse files

cpufreq: Introduce CPUFREQ_GOV_STRICT_TARGET 



Introduce a new governor flag, CPUFREQ_GOV_STRICT_TARGET, for the
governors that want the target frequency to be set exactly to the
given value without leaving any room for adjustments on the hardware
side and set this flag for the powersave and performance governors.

Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: default avatarViresh Kumar <viresh.kumar@linaro.org>
parent 9a2a9ebc

drivers/cpufreq/cpufreq_performance.c

+1 −0
Original line number Diff line number Diff line
@@ -20,6 +20,7 @@ static void cpufreq_gov_performance_limits(struct cpufreq_policy *policy) 
static struct cpufreq_governor cpufreq_gov_performance = {

	.name		= "performance",

	.owner		= THIS_MODULE,

	.flags		= CPUFREQ_GOV_STRICT_TARGET,

	.limits		= cpufreq_gov_performance_limits,

};

drivers/cpufreq/cpufreq_powersave.c

+1 −0
Original line number Diff line number Diff line
@@ -21,6 +21,7 @@ static struct cpufreq_governor cpufreq_gov_powersave = { 
	.name		= "powersave",

	.limits		= cpufreq_gov_powersave_limits,

	.owner		= THIS_MODULE,

	.flags		= CPUFREQ_GOV_STRICT_TARGET,

};



MODULE_AUTHOR("Dominik Brodowski <linux@brodo.de>");

include/linux/cpufreq.h

+3 −0
Original line number Diff line number Diff line
@@ -580,6 +580,9 @@ struct cpufreq_governor { 
/* For governors which change frequency dynamically by themselves */

#define CPUFREQ_GOV_DYNAMIC_SWITCHING	BIT(0)



/* For governors wanting the target frequency to be set exactly */

#define CPUFREQ_GOV_STRICT_TARGET	BIT(1)





/* Pass a target to the cpufreq driver */

unsigned int cpufreq_driver_fast_switch(struct cpufreq_policy *policy,

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