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Diffstat (limited to 'include/asm-x86/mmzone_64.h')
| -rw-r--r-- | include/asm-x86/mmzone_64.h | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/include/asm-x86/mmzone_64.h b/include/asm-x86/mmzone_64.h new file mode 100644 index 000000000000..19a89377b123 --- /dev/null +++ b/include/asm-x86/mmzone_64.h @@ -0,0 +1,56 @@ +/* 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_64_MMZONE_H +#define _ASM_X86_64_MMZONE_H 1 + + +#ifdef CONFIG_NUMA + +#define VIRTUAL_BUG_ON(x) + +#include <asm/smp.h> + +/* Simple perfect hash to map physical addresses to node numbers */ +struct memnode { + int shift; + unsigned int mapsize; + u8 *map; + u8 embedded_map[64-16]; +} ____cacheline_aligned; /* total size = 64 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); + VIRTUAL_BUG_ON((addr >> memnode_shift) >= memnodemapsize); + 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) + +#ifdef CONFIG_DISCONTIGMEM +#define pfn_to_nid(pfn) phys_to_nid((unsigned long)(pfn) << PAGE_SHIFT) + +extern int pfn_valid(unsigned long pfn); +#endif + +#ifdef CONFIG_NUMA_EMU +#define FAKE_NODE_MIN_SIZE (64*1024*1024) +#define FAKE_NODE_MIN_HASH_MASK (~(FAKE_NODE_MIN_SIZE - 1uL)) +#endif + +#endif +#endif |