Merge branch 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
[pandora-kernel.git] / 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 /*
12  * Before going off node we want the VM to try and reclaim from the local
13  * node. It does this if the remote distance is larger than RECLAIM_DISTANCE.
14  * With the default REMOTE_DISTANCE of 20 and the default RECLAIM_DISTANCE of
15  * 20, we never reclaim and go off node straight away.
16  *
17  * To fix this we choose a smaller value of RECLAIM_DISTANCE.
18  */
19 #define RECLAIM_DISTANCE 10
20
21 /*
22  * Before going off node we want the VM to try and reclaim from the local
23  * node. It does this if the remote distance is larger than RECLAIM_DISTANCE.
24  * With the default REMOTE_DISTANCE of 20 and the default RECLAIM_DISTANCE of
25  * 20, we never reclaim and go off node straight away.
26  *
27  * To fix this we choose a smaller value of RECLAIM_DISTANCE.
28  */
29 #define RECLAIM_DISTANCE 10
30
31 #include <asm/mmzone.h>
32
33 static inline int cpu_to_node(int cpu)
34 {
35         return numa_cpu_lookup_table[cpu];
36 }
37
38 #define parent_node(node)       (node)
39
40 #define cpumask_of_node(node) ((node) == -1 ?                           \
41                                cpu_all_mask :                           \
42                                node_to_cpumask_map[node])
43
44 int of_node_to_nid(struct device_node *device);
45
46 struct pci_bus;
47 #ifdef CONFIG_PCI
48 extern int pcibus_to_node(struct pci_bus *bus);
49 #else
50 static inline int pcibus_to_node(struct pci_bus *bus)
51 {
52         return -1;
53 }
54 #endif
55
56 #define cpumask_of_pcibus(bus)  (pcibus_to_node(bus) == -1 ?            \
57                                  cpu_all_mask :                         \
58                                  cpumask_of_node(pcibus_to_node(bus)))
59
60 /* sched_domains SD_NODE_INIT for PPC64 machines */
61 #define SD_NODE_INIT (struct sched_domain) {                            \
62         .min_interval           = 8,                                    \
63         .max_interval           = 32,                                   \
64         .busy_factor            = 32,                                   \
65         .imbalance_pct          = 125,                                  \
66         .cache_nice_tries       = 1,                                    \
67         .busy_idx               = 3,                                    \
68         .idle_idx               = 1,                                    \
69         .newidle_idx            = 0,                                    \
70         .wake_idx               = 0,                                    \
71         .forkexec_idx           = 0,                                    \
72                                                                         \
73         .flags                  = 1*SD_LOAD_BALANCE                     \
74                                 | 1*SD_BALANCE_NEWIDLE                  \
75                                 | 1*SD_BALANCE_EXEC                     \
76                                 | 1*SD_BALANCE_FORK                     \
77                                 | 0*SD_BALANCE_WAKE                     \
78                                 | 0*SD_WAKE_AFFINE                      \
79                                 | 0*SD_PREFER_LOCAL                     \
80                                 | 0*SD_SHARE_CPUPOWER                   \
81                                 | 0*SD_POWERSAVINGS_BALANCE             \
82                                 | 0*SD_SHARE_PKG_RESOURCES              \
83                                 | 1*SD_SERIALIZE                        \
84                                 | 0*SD_PREFER_SIBLING                   \
85                                 ,                                       \
86         .last_balance           = jiffies,                              \
87         .balance_interval       = 1,                                    \
88 }
89
90 extern void __init dump_numa_cpu_topology(void);
91
92 extern int sysfs_add_device_to_node(struct sys_device *dev, int nid);
93 extern void sysfs_remove_device_from_node(struct sys_device *dev, int nid);
94
95 #else
96
97 static inline int of_node_to_nid(struct device_node *device)
98 {
99         return 0;
100 }
101
102 static inline void dump_numa_cpu_topology(void) {}
103
104 static inline int sysfs_add_device_to_node(struct sys_device *dev, int nid)
105 {
106         return 0;
107 }
108
109 static inline void sysfs_remove_device_from_node(struct sys_device *dev,
110                                                 int nid)
111 {
112 }
113
114 #endif /* CONFIG_NUMA */
115
116 #include <asm-generic/topology.h>
117
118 #ifdef CONFIG_SMP
119 #include <asm/cputable.h>
120 #define smt_capable()           (cpu_has_feature(CPU_FTR_SMT))
121
122 #ifdef CONFIG_PPC64
123 #include <asm/smp.h>
124
125 #define topology_thread_cpumask(cpu)    (per_cpu(cpu_sibling_map, cpu))
126 #define topology_core_cpumask(cpu)      (per_cpu(cpu_core_map, cpu))
127 #define topology_core_id(cpu)           (cpu_to_core_id(cpu))
128 #endif
129 #endif
130
131 #endif /* __KERNEL__ */
132 #endif  /* _ASM_POWERPC_TOPOLOGY_H */