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| author | Al Viro <viro@zeniv.linux.org.uk> | 2008-08-18 05:05:42 +0400 |
|---|---|---|
| committer | H. Peter Anvin <hpa@zytor.com> | 2008-10-23 09:55:20 +0400 |
| commit | bb8985586b7a906e116db835c64773b7a7d51663 (patch) | |
| tree | de93ae58e88cc563d95cc124a73f3930594c6100 /arch/x86/include/asm/mmzone_64.h | |
| parent | 8ede0bdb63305d3353efd97e9af6210afb05734e (diff) | |
| download | linux-bb8985586b7a906e116db835c64773b7a7d51663.tar.xz | |
x86, um: ... and asm-x86 move
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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..6480f3333b2a --- /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 */ |