1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _ASM_S390_TOPOLOGY_H
3 #define _ASM_S390_TOPOLOGY_H
5 #include <linux/cpumask.h>
11 #ifdef CONFIG_SCHED_TOPOLOGY
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 node_id;
20 cpumask_t thread_mask;
23 cpumask_t drawer_mask;
26 extern struct cpu_topology_s390 cpu_topology[NR_CPUS];
27 extern cpumask_t cpus_with_topology;
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)
39 #define mc_capable() 1
41 void topology_init_early(void);
42 int topology_cpu_init(struct cpu *);
43 int topology_set_cpu_management(int fc);
44 void topology_schedule_update(void);
45 void store_topology(struct sysinfo_15_1_x *info);
46 void topology_expect_change(void);
47 const struct cpumask *cpu_coregroup_mask(int cpu);
49 #else /* CONFIG_SCHED_TOPOLOGY */
51 static inline void topology_init_early(void) { }
52 static inline void topology_schedule_update(void) { }
53 static inline int topology_cpu_init(struct cpu *cpu) { return 0; }
54 static inline int topology_cpu_dedicated(int cpu_nr) { return 0; }
55 static inline void topology_expect_change(void) { }
57 #endif /* CONFIG_SCHED_TOPOLOGY */
59 #define POLARIZATION_UNKNOWN (-1)
60 #define POLARIZATION_HRZ (0)
61 #define POLARIZATION_VL (1)
62 #define POLARIZATION_VM (2)
63 #define POLARIZATION_VH (3)
65 #define SD_BOOK_INIT SD_CPU_INIT
69 #define cpu_to_node cpu_to_node
70 static inline int cpu_to_node(int cpu)
72 return cpu_topology[cpu].node_id;
75 /* Returns a pointer to the cpumask of CPUs on node 'node'. */
76 #define cpumask_of_node cpumask_of_node
77 static inline const struct cpumask *cpumask_of_node(int node)
79 return &node_to_cpumask_map[node];
82 #define pcibus_to_node(bus) __pcibus_to_node(bus)
84 #define node_distance(a, b) __node_distance(a, b)
86 #else /* !CONFIG_NUMA */
88 #define numa_node_id numa_node_id
89 static inline int numa_node_id(void)
94 #endif /* CONFIG_NUMA */
96 #include <asm-generic/topology.h>
98 #endif /* _ASM_S390_TOPOLOGY_H */