projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | /* K8 NUMA support */ |
| 2 | /* Copyright 2002,2003 by Andi Kleen, SuSE Labs */ | |
| 3 | /* 2.5 Version loosely based on the NUMAQ Code by Pat Gaughen. */ | |
| 1965aae3 PA |
4 | #ifndef _ASM_X86_MMZONE_64_H |
| 5 | #define _ASM_X86_MMZONE_64_H | |
| 1da177e4 | 6 | |
| 1da177e4 | 7 | |
| 2b97690f | 8 | #ifdef CONFIG_NUMA |
| 1da177e4 | 9 | |
| 59ea7463 | 10 | #include <linux/mmdebug.h> |
| 1da177e4 LT |
11 | |
| 12 | #include <asm/smp.h> | |
| 13 | ||
| 1da177e4 | 14 | /* Simple perfect hash to map physical addresses to node numbers */ |
| dcf36bfa ED |
15 | struct memnode { |
| 16 | int shift; | |
| 076422d2 | 17 | unsigned int mapsize; |
| 43238382 | 18 | s16 *map; |
| 60e9bfd1 | 19 | s16 embedded_map[64 - 8]; |
| 43238382 | 20 | } ____cacheline_aligned; /* total size = 128 bytes */ |
| dcf36bfa ED |
21 | extern struct memnode memnode; |
| 22 | #define memnode_shift memnode.shift | |
| 23 | #define memnodemap memnode.map | |
| 076422d2 | 24 | #define memnodemapsize memnode.mapsize |
| 1da177e4 LT |
25 | |
| 26 | extern struct pglist_data *node_data[]; | |
| 27 | ||
| 60e9bfd1 JP |
28 | static inline __attribute__((pure)) int phys_to_nid(unsigned long addr) |
| 29 | { | |
| 30 | unsigned nid; | |
| 076422d2 | 31 | VIRTUAL_BUG_ON(!memnodemap); |
| 60e9bfd1 JP |
32 | nid = memnodemap[addr >> memnode_shift]; |
| 33 | VIRTUAL_BUG_ON(nid >= MAX_NUMNODES || !node_data[nid]); | |
| 34 | return nid; | |
| 35 | } | |
| 1da177e4 | 36 | |
| 1da177e4 LT |
37 | #define NODE_DATA(nid) (node_data[nid]) |
| 38 | ||
| 1da177e4 | 39 | #define node_start_pfn(nid) (NODE_DATA(nid)->node_start_pfn) |
| 60e9bfd1 | 40 | #define node_end_pfn(nid) (NODE_DATA(nid)->node_start_pfn + \ |
| 1da177e4 | 41 | NODE_DATA(nid)->node_spanned_pages) |
| 2b97690f | 42 | #endif |
| 1965aae3 | 43 | #endif /* _ASM_X86_MMZONE_64_H */ |