This is a note to let you know that I've just added the patch titled cpufreq: Introduce CPUFREQ_GOV_STRICT_TARGET to the 5.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: cpufreq-introduce-cpufreq_gov_strict_target.patch and it can be found in the queue-5.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 218f66870181bec7aaa6e3c72f346039c590c3c2 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" <rafael.j.wysocki@xxxxxxxxx> Date: Tue, 10 Nov 2020 18:26:10 +0100 Subject: cpufreq: Introduce CPUFREQ_GOV_STRICT_TARGET From: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx> commit 218f66870181bec7aaa6e3c72f346039c590c3c2 upstream. 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: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx> Acked-by: Viresh Kumar <viresh.kumar@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/cpufreq/cpufreq_performance.c | 1 + drivers/cpufreq/cpufreq_powersave.c | 1 + include/linux/cpufreq.h | 3 +++ 3 files changed, 5 insertions(+) --- a/drivers/cpufreq/cpufreq_performance.c +++ b/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_STRICT_TARGET, .limits = cpufreq_gov_performance_limits, }; --- a/drivers/cpufreq/cpufreq_powersave.c +++ b/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_STRICT_TARGET, }; MODULE_AUTHOR("Dominik Brodowski <linux@xxxxxxxx>"); --- a/include/linux/cpufreq.h +++ b/include/linux/cpufreq.h @@ -575,6 +575,9 @@ 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, Patches currently in stable-queue which might be from rafael.j.wysocki@xxxxxxxxx are queue-5.9/cpufreq-intel_pstate-take-cpufreq_gov_strict_target-into-account.patch queue-5.9/cpufreq-introduce-governor-flags.patch queue-5.9/cpufreq-add-strict_target-to-struct-cpufreq_policy.patch queue-5.9/cpufreq-introduce-cpufreq_gov_strict_target.patch