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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115/* 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, capacity_freq_ref);
static inline unsigned long topology_get_freq_ref(int cpu){ return per_cpu(capacity_freq_ref, cpu);}
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, SCALE_FREQ_SOURCE_VIRT,};
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, hw_pressure);
static inline unsigned long topology_get_hw_pressure(int cpu){ return per_cpu(hw_pressure, cpu);}
void topology_update_hw_pressure(const struct cpumask *cpus, unsigned long capped_freq);
struct cpu_topology { int thread_id; int core_id; int cluster_id; int package_id; cpumask_t thread_sibling; cpumask_t core_sibling; cpumask_t cluster_sibling; cpumask_t llc_sibling;};
#ifdef CONFIG_GENERIC_ARCH_TOPOLOGYextern 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)
#ifndef arch_cpu_is_threaded#define arch_cpu_is_threaded() (0)#endif
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);void freq_inv_set_max_ratio(int cpu, u64 max_rate);
/* * Architectures like ARM64 don't have reliable architectural way to get SMT * information and depend on the firmware (ACPI/OF) report. Non-SMT core won't * initialize thread_id so we can use this to detect the SMT implementation. */static inline bool topology_core_has_smt(int cpu){ return cpu_topology[cpu].thread_id != -1;}
#else
static inline bool topology_core_has_smt(int cpu) { return false; }
#endif /* CONFIG_GENERIC_ARCH_TOPOLOGY */
#endif /* _LINUX_ARCH_TOPOLOGY_H_ */