diff options
| author | Anton Altaparmakov <aia21@cantab.net> | 2005-06-25 14:27:27 +0100 |
|---|---|---|
| committer | Anton Altaparmakov <aia21@cantab.net> | 2005-06-25 14:27:27 +0100 |
| commit | 38b22b6e9f46ab8f73ef5734f0e0a000766a9258 (patch) | |
| tree | 2ccc41ef55918d3af43e444bde7648562a031559 /include/asm-x86_64/sparsemem.h | |
| parent | 3357d4c75f1fb67e7304998c4ad4e9a9fed66fa4 (diff) | |
| parent | b3e112bcc19abd8e9657dca34a87316786e096f3 (diff) | |
| download | linux-next-38b22b6e9f46ab8f73ef5734f0e0a000766a9258.tar.gz | |
Automerge with /usr/src/ntfs-2.6.git.
Diffstat (limited to 'include/asm-x86_64/sparsemem.h')
| -rw-r--r-- | include/asm-x86_64/sparsemem.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/include/asm-x86_64/sparsemem.h b/include/asm-x86_64/sparsemem.h new file mode 100644 index 000000000000..dabb16714a71 --- /dev/null +++ b/include/asm-x86_64/sparsemem.h @@ -0,0 +1,26 @@ +#ifndef _ASM_X86_64_SPARSEMEM_H +#define _ASM_X86_64_SPARSEMEM_H 1 + +#ifdef CONFIG_SPARSEMEM + +/* + * generic non-linear memory support: + * + * 1) we will not split memory into more chunks than will fit into the flags + * field of the struct page + * + * SECTION_SIZE_BITS 2^n: size of each section + * MAX_PHYSADDR_BITS 2^n: max size of physical address space + * MAX_PHYSMEM_BITS 2^n: how much memory we can have in that space + * + */ + +#define SECTION_SIZE_BITS 27 /* matt - 128 is convenient right now */ +#define MAX_PHYSADDR_BITS 40 +#define MAX_PHYSMEM_BITS 40 + +extern int early_pfn_to_nid(unsigned long pfn); + +#endif /* CONFIG_SPARSEMEM */ + +#endif /* _ASM_X86_64_SPARSEMEM_H */ |