| /* 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 cluster_id; |
| int package_id; |
| int llc_id; |
| cpumask_t thread_sibling; |
| cpumask_t core_sibling; |
| cpumask_t cluster_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_cluster_id(cpu) (cpu_topology[cpu].cluster_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_cluster_cpumask(cpu) (&cpu_topology[cpu].cluster_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); |
| const struct cpumask *cpu_clustergroup_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_ */ |