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| author | Ingo Molnar <mingo@elte.hu> | 2008-12-12 11:53:43 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-12-12 11:53:43 +0100 |
| commit | e18d7af85296cb6999aae171e8a9f8612bea5ae0 (patch) | |
| tree | 97a675ecc17bef2f710c50f5ea2a480df0e362c0 /arch/x86/include/asm/mmzone_64.h | |
| parent | 3555105333ae55414d0fe051557bd7dc590f5255 (diff) | |
| parent | 8b1fae4e4200388b64dd88065639413cb3f1051c (diff) | |
| download | linux-e18d7af85296cb6999aae171e8a9f8612bea5ae0.tar.gz linux-e18d7af85296cb6999aae171e8a9f8612bea5ae0.tar.bz2 linux-e18d7af85296cb6999aae171e8a9f8612bea5ae0.zip | |
Merge commit 'v2.6.28-rc8' into x86/mm
Diffstat (limited to 'arch/x86/include/asm/mmzone_64.h')
| -rw-r--r-- | arch/x86/include/asm/mmzone_64.h | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/arch/x86/include/asm/mmzone_64.h b/arch/x86/include/asm/mmzone_64.h new file mode 100644 index 000000000000..a5b3817d4b9e --- /dev/null +++ b/arch/x86/include/asm/mmzone_64.h @@ -0,0 +1,51 @@ +/* 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) + +extern int early_pfn_to_nid(unsigned long pfn); + +#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 /* _ASM_X86_MMZONE_64_H */ |