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71 lines
1.9 KiB
71 lines
1.9 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_detect_flags(void); |
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int topology_smt_flags(void); |
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int topology_core_flags(void); |
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int topology_cpu_flags(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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struct sched_domain; |
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static inline |
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unsigned long topology_get_cpu_scale(struct sched_domain *sd, 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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DECLARE_PER_CPU(unsigned long, max_cpu_freq); |
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static inline |
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unsigned long topology_get_max_cpu_freq(struct sched_domain *sd, int cpu) |
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{ |
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return per_cpu(max_cpu_freq, cpu); |
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} |
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static inline |
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unsigned long topology_get_freq_scale(struct sched_domain *sd, int cpu) |
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{ |
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return per_cpu(freq_scale, cpu); |
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} |
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DECLARE_PER_CPU(unsigned long, max_freq_scale); |
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DECLARE_PER_CPU(unsigned long, min_freq_scale); |
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static inline |
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unsigned long topology_get_max_freq_scale(struct sched_domain *sd, int cpu) |
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{ |
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return per_cpu(max_freq_scale, cpu); |
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} |
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static inline |
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unsigned long topology_get_min_freq_scale(struct sched_domain *sd, int cpu) |
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{ |
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return per_cpu(min_freq_scale, cpu); |
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} |
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#define topology_cur_cpu_capacity(cpu) (arch_get_cur_cpu_capacity(cpu)) |
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/* Extras of CPU & Cluster functions */ |
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extern int arch_get_nr_clusters(void); |
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extern int arch_get_cluster_id(unsigned int cpu); |
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extern unsigned long arch_get_max_cpu_capacity(int cpu); |
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extern unsigned long arch_get_cur_cpu_capacity(int cpu); |
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extern void arch_get_cluster_cpus(struct cpumask *cpus, int cluster_id); |
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#endif /* _LINUX_ARCH_TOPOLOGY_H_ */
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