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
8 struct sysinfo_15_1_x;
9 struct cpu;
10
11 #ifdef CONFIG_SCHED_TOPOLOGY
12
13 struct 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
27 extern 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
43 void topology_init_early(void);
44 int topology_cpu_init(struct cpu *);
45 int topology_set_cpu_management(int fc);
46 void topology_schedule_update(void);
47 void store_topology(struct sysinfo_15_1_x *info);
48 void update_cpu_masks(void);
49 void topology_expect_change(void);
50 const struct cpumask *cpu_coregroup_mask(int cpu);
51
52 #else /* CONFIG_SCHED_TOPOLOGY */
53
54 static inline void topology_init_early(void) { }
55 static inline void topology_schedule_update(void) { }
56 static inline int topology_cpu_init(struct cpu *cpu) { return 0; }
57 static inline int topology_cpu_dedicated(int cpu_nr) { return 0; }
58 static inline int topology_booted_cores(int cpu_nr) { return 1; }
59 static inline void update_cpu_masks(void) { }
60 static 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
75 static 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
82 static 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
92 static 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 */
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.