| /* K8 NUMA support */ |
| /* Copyright 2002,2003 by Andi Kleen, SuSE Labs */ |
| /* 2.5 Version loosely based on the NUMAQ Code by Pat Gaughen. */ |
| #ifndef _ASM_X86_MMZONE_64_H |
| #define _ASM_X86_MMZONE_64_H |
| |
| |
| #ifdef CONFIG_NUMA |
| |
| #include <linux/mmdebug.h> |
| |
| #include <asm/smp.h> |
| |
| /* Simple perfect hash to map physical addresses to node numbers */ |
| struct memnode { |
| int shift; |
| unsigned int mapsize; |
| s16 *map; |
| s16 embedded_map[64 - 8]; |
| } ____cacheline_aligned; /* total size = 128 bytes */ |
| extern struct memnode memnode; |
| #define memnode_shift memnode.shift |
| #define memnodemap memnode.map |
| #define memnodemapsize memnode.mapsize |
| |
| extern struct pglist_data *node_data[]; |
| |
| static inline __attribute__((pure)) int phys_to_nid(unsigned long addr) |
| { |
| unsigned nid; |
| VIRTUAL_BUG_ON(!memnodemap); |
| nid = memnodemap[addr >> memnode_shift]; |
| VIRTUAL_BUG_ON(nid >= MAX_NUMNODES || !node_data[nid]); |
| return nid; |
| } |
| |
| #define NODE_DATA(nid) (node_data[nid]) |
| |
| #define node_start_pfn(nid) (NODE_DATA(nid)->node_start_pfn) |
| #define node_end_pfn(nid) (NODE_DATA(nid)->node_start_pfn + \ |
| NODE_DATA(nid)->node_spanned_pages) |
| #endif |
| #endif /* _ASM_X86_MMZONE_64_H */ |
