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