/* SPDX-License-Identifier: GPL-2.0 */ /* * include/linux/arch_topology.h - arch specific cpu topology information */ #ifndef _LINUX_ARCH_TOPOLOGY_H_ #define _LINUX_ARCH_TOPOLOGY_H_ #include <linux/types.h> #include <linux/percpu.h> void topology_normalize_cpu_scale(void); int topology_update_cpu_topology(void); struct device_node; bool topology_parse_cpu_capacity(struct device_node *cpu_node, int cpu); DECLARE_PER_CPU(unsigned long, cpu_scale); static inline unsigned long topology_get_cpu_scale(int cpu) { return per_cpu(cpu_scale, cpu); } void topology_set_cpu_scale(unsigned int cpu, unsigned long capacity); DECLARE_PER_CPU(unsigned long, arch_freq_scale); static inline unsigned long topology_get_freq_scale(int cpu) { return per_cpu(arch_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); enum scale_freq_source { SCALE_FREQ_SOURCE_CPUFREQ = 0, SCALE_FREQ_SOURCE_ARCH, SCALE_FREQ_SOURCE_CPPC, }; struct scale_freq_data { enum scale_freq_source source; void (*set_freq_scale)(void); }; void topology_scale_freq_tick(void); void topology_set_scale_freq_source(struct scale_freq_data *data, const struct cpumask *cpus); void topology_clear_scale_freq_source(enum scale_freq_source source, const struct cpumask *cpus); DECLARE_PER_CPU(unsigned long, thermal_pressure); static inline unsigned long topology_get_thermal_pressure(int cpu) { return per_cpu(thermal_pressure, cpu); } void topology_set_thermal_pressure(const struct cpumask *cpus, unsigned long th_pressure); struct cpu_topology { int thread_id; int core_id; int package_id; int llc_id; cpumask_t thread_sibling; cpumask_t core_sibling; cpumask_t llc_sibling; }; #ifdef CONFIG_GENERIC_ARCH_TOPOLOGY extern struct cpu_topology cpu_topology[NR_CPUS]; #define topology_physical_package_id(cpu) (cpu_topology[cpu].package_id) #define topology_core_id(cpu) (cpu_topology[cpu].core_id) #define topology_core_cpumask(cpu) (&cpu_topology[cpu].core_sibling) #define topology_sibling_cpumask(cpu) (&cpu_topology[cpu].thread_sibling) #define topology_llc_cpumask(cpu) (&cpu_topology[cpu].llc_sibling) void init_cpu_topology(void); void store_cpu_topology(unsigned int cpuid); const struct cpumask *cpu_coregroup_mask(int cpu); void update_siblings_masks(unsigned int cpu); void remove_cpu_topology(unsigned int cpuid); void reset_cpu_topology(void); int parse_acpi_topology(void); #endif #endif /* _LINUX_ARCH_TOPOLOGY_H_ */