[deliverable/linux.git] / include / linux / node.h

/*
 * include/linux/node.h - generic node definition
 *
 * This is mainly for topological representation. We define the 
 * basic 'struct node' here, which can be embedded in per-arch 
 * definitions of processors.
 *
 * Basic handling of the devices is done in drivers/base/node.c
 * and system devices are handled in drivers/base/sys.c. 
 *
 * Nodes are exported via driverfs in the class/node/devices/
 * directory. 
 *
 * Per-node interfaces can be implemented using a struct device_interface. 
 * See the following for how to do this: 
 * - drivers/base/intf.c 
 * - Documentation/driver-model/interface.txt
 */
#ifndef _LINUX_NODE_H_
#define _LINUX_NODE_H_

#include <linux/sysdev.h>
#include <linux/cpumask.h>

struct node {
	struct sys_device	sysdev;
};

struct memory_block;
extern struct node node_devices[];
typedef  void (*node_registration_func_t)(struct node *);

extern int register_node(struct node *, int, struct node *);
extern void unregister_node(struct node *node);
#ifdef CONFIG_NUMA
extern int register_one_node(int nid);
extern void unregister_one_node(int nid);
extern int register_cpu_under_node(unsigned int cpu, unsigned int nid);
extern int unregister_cpu_under_node(unsigned int cpu, unsigned int nid);
extern int register_mem_sect_under_node(struct memory_block *mem_blk,
						int nid);
extern int unregister_mem_sect_under_nodes(struct memory_block *mem_blk);

#ifdef CONFIG_HUGETLBFS
extern void register_hugetlbfs_with_node(node_registration_func_t doregister,
					 node_registration_func_t unregister);
#endif
#else
static inline int register_one_node(int nid)
{
	return 0;
}
static inline int unregister_one_node(int nid)
{
	return 0;
}
static inline int register_cpu_under_node(unsigned int cpu, unsigned int nid)
{
	return 0;
}
static inline int unregister_cpu_under_node(unsigned int cpu, unsigned int nid)
{
	return 0;
}
static inline int register_mem_sect_under_node(struct memory_block *mem_blk,
							int nid)
{
	return 0;
}
static inline int unregister_mem_sect_under_nodes(struct memory_block *mem_blk)
{
	return 0;
}

static inline void register_hugetlbfs_with_node(node_registration_func_t reg,
						node_registration_func_t unreg)
{
}
#endif

#define to_node(sys_device) container_of(sys_device, struct node, sysdev)

#endif /* _LINUX_NODE_H_ */
Commit	Line	Data
	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
	29	struct memory_block;
	30	extern struct node node_devices[];
	31	typedef void (node_registration_func_t)(struct node );
	32
	33	extern int register_node(struct node , int, struct node );
	34	extern void unregister_node(struct node *node);
	35	#ifdef CONFIG_NUMA
	36	extern int register_one_node(int nid);
	37	extern void unregister_one_node(int nid);
	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);
	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);
	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
	48	#else
	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	}
	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	}
	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	}
	74
	75	static inline void register_hugetlbfs_with_node(node_registration_func_t reg,
	76	node_registration_func_t unreg)
	77	{
	78	}
	79	#endif
	80
	81	#define to_node(sys_device) container_of(sys_device, struct node, sysdev)
	82
	83	#endif /* _LINUX_NODE_H_ */