Messages in this thread Patch in this message | | | From | "Rafael J. Wysocki" <> | Subject | [PATCH v2 2/4] cpufreq: Introduce CPUFREQ_GOV_FLAG_STRICT_TARGET | Date | Mon, 09 Nov 2020 17:52:46 +0100 |
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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,
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