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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
25struct node {
26 struct sys_device sysdev;
27};
28
29struct memory_block;
30extern struct node node_devices[];
31
32extern int register_node(struct node *, int, struct node *);
33extern void unregister_node(struct node *node);
34#ifdef CONFIG_NUMA
35extern int register_one_node(int nid);
36extern void unregister_one_node(int nid);
37extern int register_cpu_under_node(unsigned int cpu, unsigned int nid);
38extern int unregister_cpu_under_node(unsigned int cpu, unsigned int nid);
39extern int register_mem_sect_under_node(struct memory_block *mem_blk,
40 int nid);
41extern int unregister_mem_sect_under_nodes(struct memory_block *mem_blk);
42#else
43static inline int register_one_node(int nid)
44{
45 return 0;
46}
47static inline int unregister_one_node(int nid)
48{
49 return 0;
50}
51static inline int register_cpu_under_node(unsigned int cpu, unsigned int nid)
52{
53 return 0;
54}
55static inline int unregister_cpu_under_node(unsigned int cpu, unsigned int nid)
56{
57 return 0;
58}
59static inline int register_mem_sect_under_node(struct memory_block *mem_blk,
60 int nid)
61{
62 return 0;
63}
64static inline int unregister_mem_sect_under_nodes(struct memory_block *mem_blk)
65{
66 return 0;
67}
68#endif
69
70#define to_node(sys_device) container_of(sys_device, struct node, sysdev)
71
72#endif /* _LINUX_NODE_H_ */