projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 1da177e4 LT |
2 | #ifndef _LINUX_NUMA_H |
| 3 | #define _LINUX_NUMA_H | |
| d7a73e3f | 4 | #include <linux/init.h> |
| 5d30f92e | 5 | #include <linux/types.h> |
| 14a8262f | 6 | #include <linux/nodemask.h> |
| 1da177e4 | 7 | |
| 8f012db2 | 8 | #define NUMA_NO_MEMBLK (-1) |
| 4e25b257 | 9 | |
| 8043832e MRI |
10 | static inline bool numa_valid_node(int nid) |
| 11 | { | |
| 12 | return nid >= 0 && nid < MAX_NUMNODES; | |
| 13 | } | |
| 14 | ||
| 1e5d8e1e DW |
15 | /* optionally keep NUMA memory info available post init */ |
| 16 | #ifdef CONFIG_NUMA_KEEP_MEMINFO | |
| 17 | #define __initdata_or_meminfo | |
| 18 | #else | |
| 19 | #define __initdata_or_meminfo __initdata | |
| 20 | #endif | |
| 21 | ||
| b2ca916c | 22 | #ifdef CONFIG_NUMA |
| a927bd6b DW |
23 | #include <asm/sparsemem.h> |
| 24 | ||
| 46bcce50 MRM |
25 | extern struct pglist_data *node_data[]; |
| 26 | #define NODE_DATA(nid) (node_data[nid]) | |
| 27 | ||
| 3515863d | 28 | void __init alloc_node_data(int nid); |
| ec164cf1 MRM |
29 | void __init alloc_offline_node_data(int nid); |
| 30 | ||
| 5d30f92e | 31 | /* Generic implementation available */ |
| b1f099b1 | 32 | int numa_nearest_node(int node, unsigned int state); |
| a927bd6b | 33 | |
| 16d79f2a AR |
34 | int nearest_node_nodemask(int node, nodemask_t *mask); |
| 35 | ||
| a927bd6b | 36 | #ifndef memory_add_physaddr_to_nid |
| d7a73e3f | 37 | int memory_add_physaddr_to_nid(u64 start); |
| a927bd6b | 38 | #endif |
| d7a73e3f | 39 | |
| a927bd6b | 40 | #ifndef phys_to_target_node |
| d7a73e3f | 41 | int phys_to_target_node(u64 start); |
| a927bd6b | 42 | #endif |
| d7a73e3f | 43 | |
| f9f67e5a | 44 | int numa_fill_memblks(u64 start, u64 end); |
| d7a73e3f | 45 | |
| a927bd6b | 46 | #else /* !CONFIG_NUMA */ |
| b1f099b1 | 47 | static inline int numa_nearest_node(int node, unsigned int state) |
| b2ca916c DW |
48 | { |
| 49 | return NUMA_NO_NODE; | |
| 50 | } | |
| b1f099b1 | 51 | |
| 16d79f2a AR |
52 | static inline int nearest_node_nodemask(int node, nodemask_t *mask) |
| 53 | { | |
| 54 | return NUMA_NO_NODE; | |
| 55 | } | |
| 56 | ||
| a927bd6b DW |
57 | static inline int memory_add_physaddr_to_nid(u64 start) |
| 58 | { | |
| 59 | return 0; | |
| 60 | } | |
| 61 | static inline int phys_to_target_node(u64 start) | |
| 62 | { | |
| 63 | return 0; | |
| 64 | } | |
| ec164cf1 MRM |
65 | |
| 66 | static inline void alloc_offline_node_data(int nid) {} | |
| b2ca916c DW |
67 | #endif |
| 68 | ||
| b1f099b1 YN |
69 | #define numa_map_to_online_node(node) numa_nearest_node(node, N_ONLINE) |
| 70 | ||
| 50468e43 JS |
71 | #ifdef CONFIG_HAVE_ARCH_NODE_DEV_GROUP |
| 72 | extern const struct attribute_group arch_node_dev_group; | |
| 73 | #endif | |
| 74 | ||
| 1da177e4 | 75 | #endif /* _LINUX_NUMA_H */ |