Convert cpu_sibling_map to be a per cpu variable
[linux-3.10.git] / include / asm-powerpc / topology.h
1 #ifndef _ASM_POWERPC_TOPOLOGY_H
2 #define _ASM_POWERPC_TOPOLOGY_H
3 #ifdef __KERNEL__
4
5
6 struct sys_device;
7 struct device_node;
8
9 #ifdef CONFIG_NUMA
10
11 #include <asm/mmzone.h>
12
13 static inline int cpu_to_node(int cpu)
14 {
15         return numa_cpu_lookup_table[cpu];
16 }
17
18 #define parent_node(node)       (node)
19
20 static inline cpumask_t node_to_cpumask(int node)
21 {
22         return numa_cpumask_lookup_table[node];
23 }
24
25 static inline int node_to_first_cpu(int node)
26 {
27         cpumask_t tmp;
28         tmp = node_to_cpumask(node);
29         return first_cpu(tmp);
30 }
31
32 int of_node_to_nid(struct device_node *device);
33
34 struct pci_bus;
35 #ifdef CONFIG_PCI
36 extern int pcibus_to_node(struct pci_bus *bus);
37 #else
38 static inline int pcibus_to_node(struct pci_bus *bus)
39 {
40         return -1;
41 }
42 #endif
43
44 #define pcibus_to_cpumask(bus)  (pcibus_to_node(bus) == -1 ? \
45                                         CPU_MASK_ALL : \
46                                         node_to_cpumask(pcibus_to_node(bus)) \
47                                 )
48
49 /* sched_domains SD_NODE_INIT for PPC64 machines */
50 #define SD_NODE_INIT (struct sched_domain) {            \
51         .span                   = CPU_MASK_NONE,        \
52         .parent                 = NULL,                 \
53         .child                  = NULL,                 \
54         .groups                 = NULL,                 \
55         .min_interval           = 8,                    \
56         .max_interval           = 32,                   \
57         .busy_factor            = 32,                   \
58         .imbalance_pct          = 125,                  \
59         .cache_nice_tries       = 1,                    \
60         .busy_idx               = 3,                    \
61         .idle_idx               = 1,                    \
62         .newidle_idx            = 2,                    \
63         .wake_idx               = 1,                    \
64         .flags                  = SD_LOAD_BALANCE       \
65                                 | SD_BALANCE_EXEC       \
66                                 | SD_BALANCE_NEWIDLE    \
67                                 | SD_WAKE_IDLE          \
68                                 | SD_SERIALIZE          \
69                                 | SD_WAKE_BALANCE,      \
70         .last_balance           = jiffies,              \
71         .balance_interval       = 1,                    \
72         .nr_balance_failed      = 0,                    \
73 }
74
75 extern void __init dump_numa_cpu_topology(void);
76
77 extern int sysfs_add_device_to_node(struct sys_device *dev, int nid);
78 extern void sysfs_remove_device_from_node(struct sys_device *dev, int nid);
79
80 #else
81
82 static inline int of_node_to_nid(struct device_node *device)
83 {
84         return 0;
85 }
86
87 static inline void dump_numa_cpu_topology(void) {}
88
89 static inline int sysfs_add_device_to_node(struct sys_device *dev, int nid)
90 {
91         return 0;
92 }
93
94 static inline void sysfs_remove_device_from_node(struct sys_device *dev,
95                                                 int nid)
96 {
97 }
98
99
100 #include <asm-generic/topology.h>
101
102 #endif /* CONFIG_NUMA */
103
104 #ifdef CONFIG_SMP
105 #include <asm/cputable.h>
106 #define smt_capable()           (cpu_has_feature(CPU_FTR_SMT))
107
108 #ifdef CONFIG_PPC64
109 #include <asm/smp.h>
110
111 #define topology_thread_siblings(cpu)   (per_cpu(cpu_sibling_map, cpu))
112 #endif
113 #endif
114
115 #endif /* __KERNEL__ */
116 #endif  /* _ASM_POWERPC_TOPOLOGY_H */