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