projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 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> | |
| 39da08cb | 24 | #include <linux/workqueue.h> |
| 1da177e4 LT |
25 | |
| 26 | struct node { | |
| 27 | struct sys_device sysdev; | |
| 39da08cb LS |
28 | |
| 29 | #if defined(CONFIG_MEMORY_HOTPLUG_SPARSE) && defined(CONFIG_HUGETLBFS) | |
| 30 | struct work_struct node_work; | |
| 31 | #endif | |
| 1da177e4 LT |
32 | }; |
| 33 | ||
| c04fc586 | 34 | struct memory_block; |
| 0fc44159 | 35 | extern struct node node_devices[]; |
| 9a305230 | 36 | typedef void (*node_registration_func_t)(struct node *); |
| 0fc44159 | 37 | |
| 1da177e4 | 38 | extern int register_node(struct node *, int, struct node *); |
| 4b45099b | 39 | extern void unregister_node(struct node *node); |
| 36920e06 | 40 | #ifdef CONFIG_NUMA |
| 0fc44159 YG |
41 | extern int register_one_node(int nid); |
| 42 | extern void unregister_one_node(int nid); | |
| 76b67ed9 KH |
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); | |
| c04fc586 GH |
45 | extern int register_mem_sect_under_node(struct memory_block *mem_blk, |
| 46 | int nid); | |
| 47 | extern int unregister_mem_sect_under_nodes(struct memory_block *mem_blk); | |
| 9a305230 LS |
48 | |
| 49 | #ifdef CONFIG_HUGETLBFS | |
| 50 | extern void register_hugetlbfs_with_node(node_registration_func_t doregister, | |
| 51 | node_registration_func_t unregister); | |
| 52 | #endif | |
| 76b67ed9 | 53 | #else |
| 36920e06 KH |
54 | static inline int register_one_node(int nid) |
| 55 | { | |
| 56 | return 0; | |
| 57 | } | |
| 58 | static inline int unregister_one_node(int nid) | |
| 59 | { | |
| 60 | return 0; | |
| 61 | } | |
| 76b67ed9 KH |
62 | static inline int register_cpu_under_node(unsigned int cpu, unsigned int nid) |
| 63 | { | |
| 64 | return 0; | |
| 65 | } | |
| 66 | static inline int unregister_cpu_under_node(unsigned int cpu, unsigned int nid) | |
| 67 | { | |
| 68 | return 0; | |
| 69 | } | |
| c04fc586 GH |
70 | static inline int register_mem_sect_under_node(struct memory_block *mem_blk, |
| 71 | int nid) | |
| 72 | { | |
| 73 | return 0; | |
| 74 | } | |
| 75 | static inline int unregister_mem_sect_under_nodes(struct memory_block *mem_blk) | |
| 76 | { | |
| 77 | return 0; | |
| 78 | } | |
| 9a305230 LS |
79 | |
| 80 | static inline void register_hugetlbfs_with_node(node_registration_func_t reg, | |
| 81 | node_registration_func_t unreg) | |
| 82 | { | |
| 83 | } | |
| 76b67ed9 | 84 | #endif |
| 1da177e4 LT |
85 | |
| 86 | #define to_node(sys_device) container_of(sys_device, struct node, sysdev) | |
| 87 | ||
| 88 | #endif /* _LINUX_NODE_H_ */ |