From: Ionela Voinescu Date: Thu, 24 Sep 2020 12:30:15 +0000 (+0100) Subject: cpufreq,arm,arm64: restructure definitions of arch_set_freq_scale() X-Git-Tag: howlett/maple_spf/20210104~835^2~3^2~2 X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=a20b7053b5c47cd7de23288238ea4d23502f300a;p=users%2Fjedix%2Flinux-maple.git cpufreq,arm,arm64: restructure definitions of arch_set_freq_scale() Compared to other arch_* functions, arch_set_freq_scale() has an atypical weak definition that can be replaced by a strong architecture specific implementation. The more typical support for architectural functions involves defining an empty stub in a header file if the symbol is not already defined in architecture code. Some examples involve: - #define arch_scale_freq_capacity topology_get_freq_scale - #define arch_scale_freq_invariant topology_scale_freq_invariant - #define arch_scale_cpu_capacity topology_get_cpu_scale - #define arch_update_cpu_topology topology_update_cpu_topology - #define arch_scale_thermal_pressure topology_get_thermal_pressure - #define arch_set_thermal_pressure topology_set_thermal_pressure Bring arch_set_freq_scale() in line with these functions by renaming it to topology_set_freq_scale() in the arch topology driver, and by defining the arch_set_freq_scale symbol to point to the new function for arm and arm64. While there are other users of the arch_topology driver, this patch defines arch_set_freq_scale for arm and arm64 only, due to their existing definitions of arch_scale_freq_capacity. This is the getter function of the frequency invariance scale factor and without a getter function, the setter function - arch_set_freq_scale() has not purpose. Signed-off-by: Ionela Voinescu Acked-by: Viresh Kumar Acked-by: Catalin Marinas Acked-by: Sudeep Holla (BL_SWITCHER and topology parts) Signed-off-by: Rafael J. Wysocki --- diff --git a/arch/arm/include/asm/topology.h b/arch/arm/include/asm/topology.h index 9219e67befbe5..e5e3d5ce4d55d 100644 --- a/arch/arm/include/asm/topology.h +++ b/arch/arm/include/asm/topology.h @@ -8,6 +8,7 @@ #include /* Replace task scheduler's default frequency-invariant accounting */ +#define arch_set_freq_scale topology_set_freq_scale #define arch_scale_freq_capacity topology_get_freq_scale #define arch_scale_freq_invariant topology_scale_freq_invariant diff --git a/arch/arm64/include/asm/topology.h b/arch/arm64/include/asm/topology.h index 7cb519473fbd8..11a465243f660 100644 --- a/arch/arm64/include/asm/topology.h +++ b/arch/arm64/include/asm/topology.h @@ -26,6 +26,7 @@ void topology_scale_freq_tick(void); #endif /* CONFIG_ARM64_AMU_EXTN */ /* Replace task scheduler's default frequency-invariant accounting */ +#define arch_set_freq_scale topology_set_freq_scale #define arch_scale_freq_capacity topology_get_freq_scale #define arch_scale_freq_invariant topology_scale_freq_invariant diff --git a/drivers/base/arch_topology.c b/drivers/base/arch_topology.c index 89cae168b076b..c1a9e2fb634ef 100644 --- a/drivers/base/arch_topology.c +++ b/drivers/base/arch_topology.c @@ -33,8 +33,8 @@ __weak bool arch_freq_counters_available(const struct cpumask *cpus) } DEFINE_PER_CPU(unsigned long, freq_scale) = SCHED_CAPACITY_SCALE; -void arch_set_freq_scale(const struct cpumask *cpus, unsigned long cur_freq, - unsigned long max_freq) +void topology_set_freq_scale(const struct cpumask *cpus, unsigned long cur_freq, + unsigned long max_freq) { unsigned long scale; int i; diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index db00693a586a7..1877f5e2e5b06 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -160,13 +160,6 @@ u64 get_cpu_idle_time(unsigned int cpu, u64 *wall, int io_busy) } EXPORT_SYMBOL_GPL(get_cpu_idle_time); -__weak void arch_set_freq_scale(const struct cpumask *cpus, - unsigned long cur_freq, - unsigned long max_freq) -{ -} -EXPORT_SYMBOL_GPL(arch_set_freq_scale); - /* * This is a generic cpufreq init() routine which can be used by cpufreq * drivers of SMP systems. It will do following: diff --git a/include/linux/arch_topology.h b/include/linux/arch_topology.h index 083df331a3c9f..0f6cd6b73a613 100644 --- a/include/linux/arch_topology.h +++ b/include/linux/arch_topology.h @@ -30,6 +30,8 @@ static inline unsigned long topology_get_freq_scale(int cpu) return per_cpu(freq_scale, cpu); } +void topology_set_freq_scale(const struct cpumask *cpus, unsigned long cur_freq, + unsigned long max_freq); bool topology_scale_freq_invariant(void); bool arch_freq_counters_available(const struct cpumask *cpus); diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h index 9f779fbdbe7bb..fa37b1c664432 100644 --- a/include/linux/cpufreq.h +++ b/include/linux/cpufreq.h @@ -1011,9 +1011,14 @@ static inline void sched_cpufreq_governor_change(struct cpufreq_policy *policy, extern void arch_freq_prepare_all(void); extern unsigned int arch_freq_get_on_cpu(int cpu); -extern void arch_set_freq_scale(const struct cpumask *cpus, - unsigned long cur_freq, - unsigned long max_freq); +#ifndef arch_set_freq_scale +static __always_inline +void arch_set_freq_scale(const struct cpumask *cpus, + unsigned long cur_freq, + unsigned long max_freq) +{ +} +#endif /* the following are really really optional */ extern struct freq_attr cpufreq_freq_attr_scaling_available_freqs;