projects / linux-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 | |
| 5d30f92e | 4 | #include <linux/types.h> |
| 1da177e4 | 5 | |
| c80d79d7 YG |
6 | #ifdef CONFIG_NODES_SHIFT |
| 7 | #define NODES_SHIFT CONFIG_NODES_SHIFT | |
| 8 | #else | |
| 1da177e4 LT |
9 | #define NODES_SHIFT 0 |
| 10 | #endif | |
| 11 | ||
| 12 | #define MAX_NUMNODES (1 << NODES_SHIFT) | |
| 13 | ||
| 4e25b257 LS |
14 | #define NUMA_NO_NODE (-1) |
| 15 | ||
| 1e5d8e1e DW |
16 | /* optionally keep NUMA memory info available post init */ |
| 17 | #ifdef CONFIG_NUMA_KEEP_MEMINFO | |
| 18 | #define __initdata_or_meminfo | |
| 19 | #else | |
| 20 | #define __initdata_or_meminfo __initdata | |
| 21 | #endif | |
| 22 | ||
| b2ca916c | 23 | #ifdef CONFIG_NUMA |
| a927bd6b DW |
24 | #include <linux/printk.h> |
| 25 | #include <asm/sparsemem.h> | |
| 26 | ||
| 5d30f92e | 27 | /* Generic implementation available */ |
| b2ca916c | 28 | int numa_map_to_online_node(int node); |
| a927bd6b DW |
29 | |
| 30 | #ifndef memory_add_physaddr_to_nid | |
| 31 | static inline int memory_add_physaddr_to_nid(u64 start) | |
| 32 | { | |
| 33 | pr_info_once("Unknown online node for memory at 0x%llx, assuming node 0\n", | |
| 34 | start); | |
| 35 | return 0; | |
| 36 | } | |
| 37 | #endif | |
| 38 | #ifndef phys_to_target_node | |
| 39 | static inline int phys_to_target_node(u64 start) | |
| 40 | { | |
| 41 | pr_info_once("Unknown target node for memory at 0x%llx, assuming node 0\n", | |
| 42 | start); | |
| 43 | return 0; | |
| 44 | } | |
| 45 | #endif | |
| 46 | #else /* !CONFIG_NUMA */ | |
| b2ca916c DW |
47 | static inline int numa_map_to_online_node(int node) |
| 48 | { | |
| 49 | return NUMA_NO_NODE; | |
| 50 | } | |
| a927bd6b DW |
51 | static inline int memory_add_physaddr_to_nid(u64 start) |
| 52 | { | |
| 53 | return 0; | |
| 54 | } | |
| 55 | static inline int phys_to_target_node(u64 start) | |
| 56 | { | |
| 57 | return 0; | |
| 58 | } | |
| b2ca916c DW |
59 | #endif |
| 60 | ||
| 50468e43 JS |
61 | #ifdef CONFIG_HAVE_ARCH_NODE_DEV_GROUP |
| 62 | extern const struct attribute_group arch_node_dev_group; | |
| 63 | #endif | |
| 64 | ||
| 1da177e4 | 65 | #endif /* _LINUX_NUMA_H */ |