1 #ifndef _ASM_POWERPC_TOPOLOGY_H
2 #define _ASM_POWERPC_TOPOLOGY_H
3 #ifdef __KERNEL__
4 
5 
6 struct device;
7 struct device_node;
8 
9 #ifdef CONFIG_NUMA
10 
11 /*
12  * If zone_reclaim_mode is enabled, a RECLAIM_DISTANCE of 10 will mean that
13  * all zones on all nodes will be eligible for zone_reclaim().
14  */
15 #define RECLAIM_DISTANCE 10
16 
17 #include <asm/mmzone.h>
18 
19 #define parent_node(node)	(node)
20 
21 #define cpumask_of_node(node) ((node) == -1 ?				\
22 			       cpu_all_mask :				\
23 			       node_to_cpumask_map[node])
24 
25 struct pci_bus;
26 #ifdef CONFIG_PCI
27 extern int pcibus_to_node(struct pci_bus *bus);
28 #else
29 static inline int pcibus_to_node(struct pci_bus *bus)
30 {
31 	return -1;
32 }
33 #endif
34 
35 #define cpumask_of_pcibus(bus)	(pcibus_to_node(bus) == -1 ?		\
36 				 cpu_all_mask :				\
37 				 cpumask_of_node(pcibus_to_node(bus)))
38 
39 extern int __node_distance(int, int);
40 #define node_distance(a, b) __node_distance(a, b)
41 
42 extern void __init dump_numa_cpu_topology(void);
43 
44 extern int sysfs_add_device_to_node(struct device *dev, int nid);
45 extern void sysfs_remove_device_from_node(struct device *dev, int nid);
46 
47 #else
48 
49 static inline void dump_numa_cpu_topology(void) {}
50 
51 static inline int sysfs_add_device_to_node(struct device *dev, int nid)
52 {
53 	return 0;
54 }
55 
56 static inline void sysfs_remove_device_from_node(struct device *dev,
57 						int nid)
58 {
59 }
60 #endif /* CONFIG_NUMA */
61 
62 #if defined(CONFIG_NUMA) && defined(CONFIG_PPC_SPLPAR)
63 extern int start_topology_update(void);
64 extern int stop_topology_update(void);
65 extern int prrn_is_enabled(void);
66 #else
67 static inline int start_topology_update(void)
68 {
69 	return 0;
70 }
71 static inline int stop_topology_update(void)
72 {
73 	return 0;
74 }
75 static inline int prrn_is_enabled(void)
76 {
77 	return 0;
78 }
79 #endif /* CONFIG_NUMA && CONFIG_PPC_SPLPAR */
80 
81 #include <asm-generic/topology.h>
82 
83 #ifdef CONFIG_SMP
84 #include <asm/cputable.h>
85 
86 #ifdef CONFIG_PPC64
87 #include <asm/smp.h>
88 
89 #define topology_physical_package_id(cpu)	(cpu_to_chip_id(cpu))
90 #define topology_sibling_cpumask(cpu)	(per_cpu(cpu_sibling_map, cpu))
91 #define topology_core_cpumask(cpu)	(per_cpu(cpu_core_map, cpu))
92 #define topology_core_id(cpu)		(cpu_to_core_id(cpu))
93 #endif
94 #endif
95 
96 #endif /* __KERNEL__ */
97 #endif	/* _ASM_POWERPC_TOPOLOGY_H */
98