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1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _ASM_S390_TOPOLOGY_H
3#define _ASM_S390_TOPOLOGY_H
4
5#include <linux/cpumask.h>
6#include <asm/numa.h>
7
8struct sysinfo_15_1_x;
9struct cpu;
10
11#ifdef CONFIG_SCHED_TOPOLOGY
12
13struct cpu_topology_s390 {
14 unsigned short thread_id;
15 unsigned short core_id;
16 unsigned short socket_id;
17 unsigned short book_id;
18 unsigned short drawer_id;
19 unsigned short dedicated : 1;
20 int booted_cores;
21 cpumask_t thread_mask;
22 cpumask_t core_mask;
23 cpumask_t book_mask;
24 cpumask_t drawer_mask;
25};
26
27extern struct cpu_topology_s390 cpu_topology[NR_CPUS];
28
29#define topology_physical_package_id(cpu) (cpu_topology[cpu].socket_id)
30#define topology_thread_id(cpu) (cpu_topology[cpu].thread_id)
31#define topology_sibling_cpumask(cpu) (&cpu_topology[cpu].thread_mask)
32#define topology_core_id(cpu) (cpu_topology[cpu].core_id)
33#define topology_core_cpumask(cpu) (&cpu_topology[cpu].core_mask)
34#define topology_book_id(cpu) (cpu_topology[cpu].book_id)
35#define topology_book_cpumask(cpu) (&cpu_topology[cpu].book_mask)
36#define topology_drawer_id(cpu) (cpu_topology[cpu].drawer_id)
37#define topology_drawer_cpumask(cpu) (&cpu_topology[cpu].drawer_mask)
38#define topology_cpu_dedicated(cpu) (cpu_topology[cpu].dedicated)
39#define topology_booted_cores(cpu) (cpu_topology[cpu].booted_cores)
40
41#define mc_capable() 1
42
43void topology_init_early(void);
44int topology_cpu_init(struct cpu *);
45int topology_set_cpu_management(int fc);
46void topology_schedule_update(void);
47void store_topology(struct sysinfo_15_1_x *info);
48void update_cpu_masks(void);
49void topology_expect_change(void);
50const struct cpumask *cpu_coregroup_mask(int cpu);
51
52#else /* CONFIG_SCHED_TOPOLOGY */
53
54static inline void topology_init_early(void) { }
55static inline void topology_schedule_update(void) { }
56static inline int topology_cpu_init(struct cpu *cpu) { return 0; }
57static inline int topology_cpu_dedicated(int cpu_nr) { return 0; }
58static inline int topology_booted_cores(int cpu_nr) { return 1; }
59static inline void update_cpu_masks(void) { }
60static inline void topology_expect_change(void) { }
61
62#endif /* CONFIG_SCHED_TOPOLOGY */
63
64#define POLARIZATION_UNKNOWN (-1)
65#define POLARIZATION_HRZ (0)
66#define POLARIZATION_VL (1)
67#define POLARIZATION_VM (2)
68#define POLARIZATION_VH (3)
69
70#define SD_BOOK_INIT SD_CPU_INIT
71
72#ifdef CONFIG_NUMA
73
74#define cpu_to_node cpu_to_node
75static inline int cpu_to_node(int cpu)
76{
77 return 0;
78}
79
80/* Returns a pointer to the cpumask of CPUs on node 'node'. */
81#define cpumask_of_node cpumask_of_node
82static inline const struct cpumask *cpumask_of_node(int node)
83{
84 return cpu_possible_mask;
85}
86
87#define pcibus_to_node(bus) __pcibus_to_node(bus)
88
89#else /* !CONFIG_NUMA */
90
91#define numa_node_id numa_node_id
92static inline int numa_node_id(void)
93{
94 return 0;
95}
96
97#endif /* CONFIG_NUMA */
98
99#include <asm-generic/topology.h>
100
101#endif /* _ASM_S390_TOPOLOGY_H */
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _ASM_S390_TOPOLOGY_H
3#define _ASM_S390_TOPOLOGY_H
4
5#include <linux/cpumask.h>
6#include <asm/numa.h>
7
8struct sysinfo_15_1_x;
9struct cpu;
10
11#ifdef CONFIG_SCHED_TOPOLOGY
12
13struct cpu_topology_s390 {
14 unsigned short thread_id;
15 unsigned short core_id;
16 unsigned short socket_id;
17 unsigned short book_id;
18 unsigned short drawer_id;
19 unsigned short node_id;
20 unsigned short dedicated : 1;
21 cpumask_t thread_mask;
22 cpumask_t core_mask;
23 cpumask_t book_mask;
24 cpumask_t drawer_mask;
25};
26
27extern struct cpu_topology_s390 cpu_topology[NR_CPUS];
28extern cpumask_t cpus_with_topology;
29
30#define topology_physical_package_id(cpu) (cpu_topology[cpu].socket_id)
31#define topology_thread_id(cpu) (cpu_topology[cpu].thread_id)
32#define topology_sibling_cpumask(cpu) (&cpu_topology[cpu].thread_mask)
33#define topology_core_id(cpu) (cpu_topology[cpu].core_id)
34#define topology_core_cpumask(cpu) (&cpu_topology[cpu].core_mask)
35#define topology_book_id(cpu) (cpu_topology[cpu].book_id)
36#define topology_book_cpumask(cpu) (&cpu_topology[cpu].book_mask)
37#define topology_drawer_id(cpu) (cpu_topology[cpu].drawer_id)
38#define topology_drawer_cpumask(cpu) (&cpu_topology[cpu].drawer_mask)
39#define topology_cpu_dedicated(cpu) (cpu_topology[cpu].dedicated)
40
41#define mc_capable() 1
42
43void topology_init_early(void);
44int topology_cpu_init(struct cpu *);
45int topology_set_cpu_management(int fc);
46void topology_schedule_update(void);
47void store_topology(struct sysinfo_15_1_x *info);
48void topology_expect_change(void);
49const struct cpumask *cpu_coregroup_mask(int cpu);
50
51#else /* CONFIG_SCHED_TOPOLOGY */
52
53static inline void topology_init_early(void) { }
54static inline void topology_schedule_update(void) { }
55static inline int topology_cpu_init(struct cpu *cpu) { return 0; }
56static inline int topology_cpu_dedicated(int cpu_nr) { return 0; }
57static inline void topology_expect_change(void) { }
58
59#endif /* CONFIG_SCHED_TOPOLOGY */
60
61#define POLARIZATION_UNKNOWN (-1)
62#define POLARIZATION_HRZ (0)
63#define POLARIZATION_VL (1)
64#define POLARIZATION_VM (2)
65#define POLARIZATION_VH (3)
66
67#define SD_BOOK_INIT SD_CPU_INIT
68
69#ifdef CONFIG_NUMA
70
71#define cpu_to_node cpu_to_node
72static inline int cpu_to_node(int cpu)
73{
74 return cpu_topology[cpu].node_id;
75}
76
77/* Returns a pointer to the cpumask of CPUs on node 'node'. */
78#define cpumask_of_node cpumask_of_node
79static inline const struct cpumask *cpumask_of_node(int node)
80{
81 return &node_to_cpumask_map[node];
82}
83
84#define pcibus_to_node(bus) __pcibus_to_node(bus)
85
86#define node_distance(a, b) __node_distance(a, b)
87
88#else /* !CONFIG_NUMA */
89
90#define numa_node_id numa_node_id
91static inline int numa_node_id(void)
92{
93 return 0;
94}
95
96#endif /* CONFIG_NUMA */
97
98#include <asm-generic/topology.h>
99
100#endif /* _ASM_S390_TOPOLOGY_H */