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76 lines
2.1 KiB
76 lines
2.1 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* |
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* include/linux/arch_topology.h - arch specific cpu topology information |
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*/ |
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#ifndef _LINUX_ARCH_TOPOLOGY_H_ |
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#define _LINUX_ARCH_TOPOLOGY_H_ |
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#include <linux/types.h> |
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#include <linux/percpu.h> |
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void topology_normalize_cpu_scale(void); |
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int topology_update_cpu_topology(void); |
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struct device_node; |
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bool topology_parse_cpu_capacity(struct device_node *cpu_node, int cpu); |
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DECLARE_PER_CPU(unsigned long, cpu_scale); |
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static inline unsigned long topology_get_cpu_scale(int cpu) |
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{ |
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return per_cpu(cpu_scale, cpu); |
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} |
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void topology_set_cpu_scale(unsigned int cpu, unsigned long capacity); |
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DECLARE_PER_CPU(unsigned long, freq_scale); |
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static inline unsigned long topology_get_freq_scale(int cpu) |
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{ |
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return per_cpu(freq_scale, cpu); |
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} |
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void topology_set_freq_scale(const struct cpumask *cpus, unsigned long cur_freq, |
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unsigned long max_freq); |
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bool topology_scale_freq_invariant(void); |
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bool arch_freq_counters_available(const struct cpumask *cpus); |
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DECLARE_PER_CPU(unsigned long, thermal_pressure); |
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static inline unsigned long topology_get_thermal_pressure(int cpu) |
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{ |
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return per_cpu(thermal_pressure, cpu); |
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} |
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void topology_set_thermal_pressure(const struct cpumask *cpus, |
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unsigned long th_pressure); |
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struct cpu_topology { |
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int thread_id; |
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int core_id; |
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int package_id; |
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int llc_id; |
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cpumask_t thread_sibling; |
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cpumask_t core_sibling; |
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cpumask_t llc_sibling; |
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}; |
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#ifdef CONFIG_GENERIC_ARCH_TOPOLOGY |
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extern struct cpu_topology cpu_topology[NR_CPUS]; |
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#define topology_physical_package_id(cpu) (cpu_topology[cpu].package_id) |
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#define topology_core_id(cpu) (cpu_topology[cpu].core_id) |
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#define topology_core_cpumask(cpu) (&cpu_topology[cpu].core_sibling) |
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#define topology_sibling_cpumask(cpu) (&cpu_topology[cpu].thread_sibling) |
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#define topology_llc_cpumask(cpu) (&cpu_topology[cpu].llc_sibling) |
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void init_cpu_topology(void); |
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void store_cpu_topology(unsigned int cpuid); |
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const struct cpumask *cpu_coregroup_mask(int cpu); |
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void update_siblings_masks(unsigned int cpu); |
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void remove_cpu_topology(unsigned int cpuid); |
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void reset_cpu_topology(void); |
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int parse_acpi_topology(void); |
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#endif |
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#endif /* _LINUX_ARCH_TOPOLOGY_H_ */
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