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SubjectRe: [PATCH v2 2/4] cpufreq: Introduce CPUFREQ_GOV_FLAG_STRICT_TARGET
On 09-11-20, 17:52, Rafael J. Wysocki wrote:
> From: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
>
> Introduce a new governor flag, CPUFREQ_GOV_FLAG_STRICT_TARGET, for
> the govenors 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: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
> ---
> drivers/cpufreq/cpufreq_performance.c | 1 +
> drivers/cpufreq/cpufreq_powersave.c | 1 +
> include/linux/cpufreq.h | 3 +++
> 3 files changed, 5 insertions(+)
>
> Index: linux-pm/drivers/cpufreq/cpufreq_performance.c
> ===================================================================
> --- linux-pm.orig/drivers/cpufreq/cpufreq_performance.c
> +++ linux-pm/drivers/cpufreq/cpufreq_performance.c
> @@ -20,6 +20,7 @@ static void cpufreq_gov_performance_limi
> static struct cpufreq_governor cpufreq_gov_performance = {
> .name = "performance",
> .owner = THIS_MODULE,
> + .flags = CPUFREQ_GOV_FLAG_STRICT_TARGET,
> .limits = cpufreq_gov_performance_limits,
> };
>
> Index: linux-pm/drivers/cpufreq/cpufreq_powersave.c
> ===================================================================
> --- linux-pm.orig/drivers/cpufreq/cpufreq_powersave.c
> +++ linux-pm/drivers/cpufreq/cpufreq_powersave.c
> @@ -21,6 +21,7 @@ static struct cpufreq_governor cpufreq_g
> .name = "powersave",
> .limits = cpufreq_gov_powersave_limits,
> .owner = THIS_MODULE,
> + .flags = CPUFREQ_GOV_FLAG_STRICT_TARGET,
> };
>
> MODULE_AUTHOR("Dominik Brodowski <linux@brodo.de>");
> Index: linux-pm/include/linux/cpufreq.h
> ===================================================================
> --- linux-pm.orig/include/linux/cpufreq.h
> +++ linux-pm/include/linux/cpufreq.h
> @@ -575,6 +575,9 @@ struct cpufreq_governor {
> /* For governors which change frequency dynamically by themselves */
> #define CPUFREQ_GOV_FLAG_DYN_SWITCH BIT(0)
>
> +/* For governors wanting the target frequency to be set exactly */
> +#define CPUFREQ_GOV_FLAG_STRICT_TARGET BIT(1)
> +
>
> /* Pass a target to the cpufreq driver */
> unsigned int cpufreq_driver_fast_switch(struct cpufreq_policy *policy,

Acked-by: Viresh Kumar <viresh.kumar@linaro.org>

--
viresh

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