2 * include/linux/node.h - generic node definition
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.
8 * Basic handling of the devices is done in drivers/base/node.c
9 * and system devices are handled in drivers/base/sys.c.
11 * Nodes are exported via driverfs in the class/node/devices/
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
19 #ifndef _LINUX_NODE_H_
20 #define _LINUX_NODE_H_
22 #include <linux/sysdev.h>
23 #include <linux/cpumask.h>
24 #include <linux/workqueue.h>
27 struct sys_device sysdev;
29 #if defined(CONFIG_MEMORY_HOTPLUG_SPARSE) && defined(CONFIG_HUGETLBFS)
30 struct work_struct node_work;
35 extern struct node node_devices[];
36 typedef void (*node_registration_func_t)(struct node *);
38 extern int register_node(struct node *, int, struct node *);
39 extern void unregister_node(struct node *node);
41 extern int register_one_node(int nid);
42 extern void unregister_one_node(int nid);
43 extern int register_cpu_under_node(unsigned int cpu, unsigned int nid);
44 extern int unregister_cpu_under_node(unsigned int cpu, unsigned int nid);
45 extern int register_mem_sect_under_node(struct memory_block *mem_blk,
47 extern int unregister_mem_sect_under_nodes(struct memory_block *mem_blk);
49 #ifdef CONFIG_HUGETLBFS
50 extern void register_hugetlbfs_with_node(node_registration_func_t doregister,
51 node_registration_func_t unregister);
54 static inline int register_one_node(int nid)
58 static inline int unregister_one_node(int nid)
62 static inline int register_cpu_under_node(unsigned int cpu, unsigned int nid)
66 static inline int unregister_cpu_under_node(unsigned int cpu, unsigned int nid)
70 static inline int register_mem_sect_under_node(struct memory_block *mem_blk,
75 static inline int unregister_mem_sect_under_nodes(struct memory_block *mem_blk)
80 static inline void register_hugetlbfs_with_node(node_registration_func_t reg,
81 node_registration_func_t unreg)
86 #define to_node(sys_device) container_of(sys_device, struct node, sysdev)
88 #endif /* _LINUX_NODE_H_ */