Merge branches 'core/futexes', 'core/locking', 'core/rcu' and 'linus' into core/urgent
[linux-2.6] / arch / powerpc / include / asm / 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 #define cpumask_of_node(node) (&numa_cpumask_lookup_table[node])
26
27 static inline int node_to_first_cpu(int node)
28 {
29         return cpumask_first(cpumask_of_node(node));
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 #define cpumask_of_pcibus(bus)  (pcibus_to_node(bus) == -1 ?            \
50                                  cpu_all_mask :                         \
51                                  cpumask_of_node(pcibus_to_node(bus)))
52
53 /* sched_domains SD_NODE_INIT for PPC64 machines */
54 #define SD_NODE_INIT (struct sched_domain) {            \
55         .parent                 = NULL,                 \
56         .child                  = NULL,                 \
57         .groups                 = NULL,                 \
58         .min_interval           = 8,                    \
59         .max_interval           = 32,                   \
60         .busy_factor            = 32,                   \
61         .imbalance_pct          = 125,                  \
62         .cache_nice_tries       = 1,                    \
63         .busy_idx               = 3,                    \
64         .idle_idx               = 1,                    \
65         .newidle_idx            = 2,                    \
66         .wake_idx               = 1,                    \
67         .flags                  = SD_LOAD_BALANCE       \
68                                 | SD_BALANCE_EXEC       \
69                                 | SD_BALANCE_NEWIDLE    \
70                                 | SD_WAKE_IDLE          \
71                                 | SD_SERIALIZE          \
72                                 | SD_WAKE_BALANCE,      \
73         .last_balance           = jiffies,              \
74         .balance_interval       = 1,                    \
75         .nr_balance_failed      = 0,                    \
76 }
77
78 extern void __init dump_numa_cpu_topology(void);
79
80 extern int sysfs_add_device_to_node(struct sys_device *dev, int nid);
81 extern void sysfs_remove_device_from_node(struct sys_device *dev, int nid);
82
83 #else
84
85 static inline int of_node_to_nid(struct device_node *device)
86 {
87         return 0;
88 }
89
90 static inline void dump_numa_cpu_topology(void) {}
91
92 static inline int sysfs_add_device_to_node(struct sys_device *dev, int nid)
93 {
94         return 0;
95 }
96
97 static inline void sysfs_remove_device_from_node(struct sys_device *dev,
98                                                 int nid)
99 {
100 }
101
102 #endif /* CONFIG_NUMA */
103
104 #include <asm-generic/topology.h>
105
106 #ifdef CONFIG_SMP
107 #include <asm/cputable.h>
108 #define smt_capable()           (cpu_has_feature(CPU_FTR_SMT))
109
110 #ifdef CONFIG_PPC64
111 #include <asm/smp.h>
112
113 #define topology_thread_siblings(cpu)   (per_cpu(cpu_sibling_map, cpu))
114 #define topology_core_siblings(cpu)     (per_cpu(cpu_core_map, cpu))
115 #define topology_thread_cpumask(cpu)    (&per_cpu(cpu_sibling_map, cpu))
116 #define topology_core_cpumask(cpu)      (&per_cpu(cpu_core_map, cpu))
117 #define topology_core_id(cpu)           (cpu_to_core_id(cpu))
118 #endif
119 #endif
120
121 #endif /* __KERNEL__ */
122 #endif  /* _ASM_POWERPC_TOPOLOGY_H */