92f3e5507d224cfc1cbf80e10d7d6bc09647a804
[linux-2.6.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 extern int pcibus_to_node(struct pci_bus *bus);
36
37 #define pcibus_to_cpumask(bus)  (pcibus_to_node(bus) == -1 ? \
38                                         CPU_MASK_ALL : \
39                                         node_to_cpumask(pcibus_to_node(bus)) \
40                                 )
41
42 /* sched_domains SD_NODE_INIT for PPC64 machines */
43 #define SD_NODE_INIT (struct sched_domain) {            \
44         .span                   = CPU_MASK_NONE,        \
45         .parent                 = NULL,                 \
46         .groups                 = NULL,                 \
47         .min_interval           = 8,                    \
48         .max_interval           = 32,                   \
49         .busy_factor            = 32,                   \
50         .imbalance_pct          = 125,                  \
51         .cache_nice_tries       = 1,                    \
52         .per_cpu_gain           = 100,                  \
53         .busy_idx               = 3,                    \
54         .idle_idx               = 1,                    \
55         .newidle_idx            = 2,                    \
56         .wake_idx               = 1,                    \
57         .flags                  = SD_LOAD_BALANCE       \
58                                 | SD_BALANCE_EXEC       \
59                                 | SD_BALANCE_NEWIDLE    \
60                                 | SD_WAKE_IDLE          \
61                                 | SD_WAKE_BALANCE,      \
62         .last_balance           = jiffies,              \
63         .balance_interval       = 1,                    \
64         .nr_balance_failed      = 0,                    \
65 }
66
67 extern void __init dump_numa_cpu_topology(void);
68
69 extern int sysfs_add_device_to_node(struct sys_device *dev, int nid);
70 extern void sysfs_remove_device_from_node(struct sys_device *dev, int nid);
71
72 #else
73
74 static inline int of_node_to_nid(struct device_node *device)
75 {
76         return 0;
77 }
78
79 static inline void dump_numa_cpu_topology(void) {}
80
81 static inline int sysfs_add_device_to_node(struct sys_device *dev, int nid)
82 {
83         return 0;
84 }
85
86 static inline void sysfs_remove_device_from_node(struct sys_device *dev,
87                                                 int nid)
88 {
89 }
90
91
92 #include <asm-generic/topology.h>
93
94 #endif /* CONFIG_NUMA */
95
96 #endif /* __KERNEL__ */
97 #endif  /* _ASM_POWERPC_TOPOLOGY_H */