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1da177e4 LT |
1 | /* |
2 | * include/linux/node.h - generic node definition | |
3 | * | |
4 | * This is mainly for topological representation. We define the | |
5 | * basic 'struct node' here, which can be embedded in per-arch | |
6 | * definitions of processors. | |
7 | * | |
8 | * Basic handling of the devices is done in drivers/base/node.c | |
9 | * and system devices are handled in drivers/base/sys.c. | |
10 | * | |
11 | * Nodes are exported via driverfs in the class/node/devices/ | |
12 | * directory. | |
13 | * | |
14 | * Per-node interfaces can be implemented using a struct device_interface. | |
15 | * See the following for how to do this: | |
16 | * - drivers/base/intf.c | |
17 | * - Documentation/driver-model/interface.txt | |
18 | */ | |
19 | #ifndef _LINUX_NODE_H_ | |
20 | #define _LINUX_NODE_H_ | |
21 | ||
22 | #include <linux/sysdev.h> | |
23 | #include <linux/cpumask.h> | |
24 | ||
25 | struct node { | |
26 | struct sys_device sysdev; | |
27 | }; | |
28 | ||
c04fc586 | 29 | struct memory_block; |
0fc44159 | 30 | extern struct node node_devices[]; |
9a305230 | 31 | typedef void (*node_registration_func_t)(struct node *); |
0fc44159 | 32 | |
1da177e4 | 33 | extern int register_node(struct node *, int, struct node *); |
4b45099b | 34 | extern void unregister_node(struct node *node); |
36920e06 | 35 | #ifdef CONFIG_NUMA |
0fc44159 YG |
36 | extern int register_one_node(int nid); |
37 | extern void unregister_one_node(int nid); | |
76b67ed9 KH |
38 | extern int register_cpu_under_node(unsigned int cpu, unsigned int nid); |
39 | extern int unregister_cpu_under_node(unsigned int cpu, unsigned int nid); | |
c04fc586 GH |
40 | extern int register_mem_sect_under_node(struct memory_block *mem_blk, |
41 | int nid); | |
42 | extern int unregister_mem_sect_under_nodes(struct memory_block *mem_blk); | |
9a305230 LS |
43 | |
44 | #ifdef CONFIG_HUGETLBFS | |
45 | extern void register_hugetlbfs_with_node(node_registration_func_t doregister, | |
46 | node_registration_func_t unregister); | |
47 | #endif | |
76b67ed9 | 48 | #else |
36920e06 KH |
49 | static inline int register_one_node(int nid) |
50 | { | |
51 | return 0; | |
52 | } | |
53 | static inline int unregister_one_node(int nid) | |
54 | { | |
55 | return 0; | |
56 | } | |
76b67ed9 KH |
57 | static inline int register_cpu_under_node(unsigned int cpu, unsigned int nid) |
58 | { | |
59 | return 0; | |
60 | } | |
61 | static inline int unregister_cpu_under_node(unsigned int cpu, unsigned int nid) | |
62 | { | |
63 | return 0; | |
64 | } | |
c04fc586 GH |
65 | static inline int register_mem_sect_under_node(struct memory_block *mem_blk, |
66 | int nid) | |
67 | { | |
68 | return 0; | |
69 | } | |
70 | static inline int unregister_mem_sect_under_nodes(struct memory_block *mem_blk) | |
71 | { | |
72 | return 0; | |
73 | } | |
9a305230 LS |
74 | |
75 | static inline void register_hugetlbfs_with_node(node_registration_func_t reg, | |
76 | node_registration_func_t unreg) | |
77 | { | |
78 | } | |
76b67ed9 | 79 | #endif |
1da177e4 LT |
80 | |
81 | #define to_node(sys_device) container_of(sys_device, struct node, sysdev) | |
82 | ||
83 | #endif /* _LINUX_NODE_H_ */ |