Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Yasunori Goto | 0fc4415 | 2006-06-27 02:53:38 -0700 | [diff] [blame] | 29 | extern struct node node_devices[]; |
| 30 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | extern int register_node(struct node *, int, struct node *); |
Keiichiro Tokunaga | 4b45099 | 2005-05-08 21:28:53 +0900 | [diff] [blame] | 32 | extern void unregister_node(struct node *node); |
Yasunori Goto | 0fc4415 | 2006-06-27 02:53:38 -0700 | [diff] [blame] | 33 | extern int register_one_node(int nid); |
| 34 | extern void unregister_one_node(int nid); |
KAMEZAWA Hiroyuki | 76b67ed | 2006-06-27 02:53:41 -0700 | [diff] [blame^] | 35 | #ifdef CONFIG_NUMA |
| 36 | extern int register_cpu_under_node(unsigned int cpu, unsigned int nid); |
| 37 | extern int unregister_cpu_under_node(unsigned int cpu, unsigned int nid); |
| 38 | #else |
| 39 | static inline int register_cpu_under_node(unsigned int cpu, unsigned int nid) |
| 40 | { |
| 41 | return 0; |
| 42 | } |
| 43 | static inline int unregister_cpu_under_node(unsigned int cpu, unsigned int nid) |
| 44 | { |
| 45 | return 0; |
| 46 | } |
| 47 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | |
| 49 | #define to_node(sys_device) container_of(sys_device, struct node, sysdev) |
| 50 | |
| 51 | #endif /* _LINUX_NODE_H_ */ |