1 /* SPDX-License-Identifier: GPL-2.0 */ 1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* 2 /*
3 * include/linux/arch_topology.h - arch specif 3 * include/linux/arch_topology.h - arch specific cpu topology information
4 */ 4 */
5 #ifndef _LINUX_ARCH_TOPOLOGY_H_ 5 #ifndef _LINUX_ARCH_TOPOLOGY_H_
6 #define _LINUX_ARCH_TOPOLOGY_H_ 6 #define _LINUX_ARCH_TOPOLOGY_H_
7 7
8 #include <linux/types.h> 8 #include <linux/types.h>
9 #include <linux/percpu.h> 9 #include <linux/percpu.h>
10 10
11 void topology_normalize_cpu_scale(void); 11 void topology_normalize_cpu_scale(void);
12 int topology_update_cpu_topology(void); 12 int topology_update_cpu_topology(void);
13 13
14 struct device_node; 14 struct device_node;
15 bool topology_parse_cpu_capacity(struct device 15 bool topology_parse_cpu_capacity(struct device_node *cpu_node, int cpu);
16 16
17 DECLARE_PER_CPU(unsigned long, cpu_scale); 17 DECLARE_PER_CPU(unsigned long, cpu_scale);
18 18
19 static inline unsigned long topology_get_cpu_s 19 static inline unsigned long topology_get_cpu_scale(int cpu)
20 { 20 {
21 return per_cpu(cpu_scale, cpu); 21 return per_cpu(cpu_scale, cpu);
22 } 22 }
23 23
24 void topology_set_cpu_scale(unsigned int cpu, 24 void topology_set_cpu_scale(unsigned int cpu, unsigned long capacity);
25 25
26 DECLARE_PER_CPU(unsigned long, capacity_freq_r 26 DECLARE_PER_CPU(unsigned long, capacity_freq_ref);
27 27
28 static inline unsigned long topology_get_freq_ 28 static inline unsigned long topology_get_freq_ref(int cpu)
29 { 29 {
30 return per_cpu(capacity_freq_ref, cpu) 30 return per_cpu(capacity_freq_ref, cpu);
31 } 31 }
32 32
33 DECLARE_PER_CPU(unsigned long, arch_freq_scale 33 DECLARE_PER_CPU(unsigned long, arch_freq_scale);
34 34
35 static inline unsigned long topology_get_freq_ 35 static inline unsigned long topology_get_freq_scale(int cpu)
36 { 36 {
37 return per_cpu(arch_freq_scale, cpu); 37 return per_cpu(arch_freq_scale, cpu);
38 } 38 }
39 39
40 void topology_set_freq_scale(const struct cpum 40 void topology_set_freq_scale(const struct cpumask *cpus, unsigned long cur_freq,
41 unsigned long max 41 unsigned long max_freq);
42 bool topology_scale_freq_invariant(void); 42 bool topology_scale_freq_invariant(void);
43 43
44 enum scale_freq_source { 44 enum scale_freq_source {
45 SCALE_FREQ_SOURCE_CPUFREQ = 0, 45 SCALE_FREQ_SOURCE_CPUFREQ = 0,
46 SCALE_FREQ_SOURCE_ARCH, 46 SCALE_FREQ_SOURCE_ARCH,
47 SCALE_FREQ_SOURCE_CPPC, 47 SCALE_FREQ_SOURCE_CPPC,
48 }; 48 };
49 49
50 struct scale_freq_data { 50 struct scale_freq_data {
51 enum scale_freq_source source; 51 enum scale_freq_source source;
52 void (*set_freq_scale)(void); 52 void (*set_freq_scale)(void);
53 }; 53 };
54 54
55 void topology_scale_freq_tick(void); 55 void topology_scale_freq_tick(void);
56 void topology_set_scale_freq_source(struct sca 56 void topology_set_scale_freq_source(struct scale_freq_data *data, const struct cpumask *cpus);
57 void topology_clear_scale_freq_source(enum sca 57 void topology_clear_scale_freq_source(enum scale_freq_source source, const struct cpumask *cpus);
58 58
59 DECLARE_PER_CPU(unsigned long, hw_pressure); 59 DECLARE_PER_CPU(unsigned long, hw_pressure);
60 60
61 static inline unsigned long topology_get_hw_pr 61 static inline unsigned long topology_get_hw_pressure(int cpu)
62 { 62 {
63 return per_cpu(hw_pressure, cpu); 63 return per_cpu(hw_pressure, cpu);
64 } 64 }
65 65
66 void topology_update_hw_pressure(const struct 66 void topology_update_hw_pressure(const struct cpumask *cpus,
67 unsigned 67 unsigned long capped_freq);
68 68
69 struct cpu_topology { 69 struct cpu_topology {
70 int thread_id; 70 int thread_id;
71 int core_id; 71 int core_id;
72 int cluster_id; 72 int cluster_id;
73 int package_id; 73 int package_id;
74 cpumask_t thread_sibling; 74 cpumask_t thread_sibling;
75 cpumask_t core_sibling; 75 cpumask_t core_sibling;
76 cpumask_t cluster_sibling; 76 cpumask_t cluster_sibling;
77 cpumask_t llc_sibling; 77 cpumask_t llc_sibling;
78 }; 78 };
79 79
80 #ifdef CONFIG_GENERIC_ARCH_TOPOLOGY 80 #ifdef CONFIG_GENERIC_ARCH_TOPOLOGY
81 extern struct cpu_topology cpu_topology[NR_CPU 81 extern struct cpu_topology cpu_topology[NR_CPUS];
82 82
83 #define topology_physical_package_id(cpu) 83 #define topology_physical_package_id(cpu) (cpu_topology[cpu].package_id)
84 #define topology_cluster_id(cpu) (cpu_t 84 #define topology_cluster_id(cpu) (cpu_topology[cpu].cluster_id)
85 #define topology_core_id(cpu) (cpu_t 85 #define topology_core_id(cpu) (cpu_topology[cpu].core_id)
86 #define topology_core_cpumask(cpu) (&cpu_ 86 #define topology_core_cpumask(cpu) (&cpu_topology[cpu].core_sibling)
87 #define topology_sibling_cpumask(cpu) (&cpu_ 87 #define topology_sibling_cpumask(cpu) (&cpu_topology[cpu].thread_sibling)
88 #define topology_cluster_cpumask(cpu) (&cpu_ 88 #define topology_cluster_cpumask(cpu) (&cpu_topology[cpu].cluster_sibling)
89 #define topology_llc_cpumask(cpu) (&cpu_ 89 #define topology_llc_cpumask(cpu) (&cpu_topology[cpu].llc_sibling)
90 void init_cpu_topology(void); 90 void init_cpu_topology(void);
91 void store_cpu_topology(unsigned int cpuid); 91 void store_cpu_topology(unsigned int cpuid);
92 const struct cpumask *cpu_coregroup_mask(int c 92 const struct cpumask *cpu_coregroup_mask(int cpu);
93 const struct cpumask *cpu_clustergroup_mask(in 93 const struct cpumask *cpu_clustergroup_mask(int cpu);
94 void update_siblings_masks(unsigned int cpu); 94 void update_siblings_masks(unsigned int cpu);
95 void remove_cpu_topology(unsigned int cpuid); 95 void remove_cpu_topology(unsigned int cpuid);
96 void reset_cpu_topology(void); 96 void reset_cpu_topology(void);
97 int parse_acpi_topology(void); 97 int parse_acpi_topology(void);
98 void freq_inv_set_max_ratio(int cpu, u64 max_r 98 void freq_inv_set_max_ratio(int cpu, u64 max_rate);
99 #endif 99 #endif
100 100
101 #endif /* _LINUX_ARCH_TOPOLOGY_H_ */ 101 #endif /* _LINUX_ARCH_TOPOLOGY_H_ */
102 102
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.