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Arnd Bergmann63b852a2009-05-13 22:56:24 +00001#ifndef __ASM_GENERIC_MMAN_COMMON_H
2#define __ASM_GENERIC_MMAN_COMMON_H
Michael S. Tsirkin5f6164f2006-02-15 15:17:39 -08003
4/*
5 Author: Michael S. Tsirkin <mst@mellanox.co.il>, Mellanox Technologies Ltd.
6 Based on: asm-xxx/mman.h
7*/
8
9#define PROT_READ 0x1 /* page can be read */
10#define PROT_WRITE 0x2 /* page can be written */
11#define PROT_EXEC 0x4 /* page can be executed */
12#define PROT_SEM 0x8 /* page may be used for atomic ops */
13#define PROT_NONE 0x0 /* page can not be accessed */
14#define PROT_GROWSDOWN 0x01000000 /* mprotect flag: extend change to start of growsdown vma */
15#define PROT_GROWSUP 0x02000000 /* mprotect flag: extend change to end of growsup vma */
16
17#define MAP_SHARED 0x01 /* Share changes */
18#define MAP_PRIVATE 0x02 /* Changes are private */
19#define MAP_TYPE 0x0f /* Mask for type of mapping */
20#define MAP_FIXED 0x10 /* Interpret addr exactly */
21#define MAP_ANONYMOUS 0x20 /* don't use a file */
Jie Zhangea637632009-12-14 18:00:02 -080022#ifdef CONFIG_MMAP_ALLOW_UNINITIALIZED
23# define MAP_UNINITIALIZED 0x4000000 /* For anonymous mmap, memory could be uninitialized */
24#else
25# define MAP_UNINITIALIZED 0x0 /* Don't support this flag */
26#endif
Michael S. Tsirkin5f6164f2006-02-15 15:17:39 -080027
28#define MS_ASYNC 1 /* sync memory asynchronously */
29#define MS_INVALIDATE 2 /* invalidate the caches */
30#define MS_SYNC 4 /* synchronous memory sync */
31
32#define MADV_NORMAL 0 /* no further special treatment */
33#define MADV_RANDOM 1 /* expect random page references */
34#define MADV_SEQUENTIAL 2 /* expect sequential page references */
35#define MADV_WILLNEED 3 /* will need these pages */
36#define MADV_DONTNEED 4 /* don't need these pages */
37
38/* common parameters: try to keep these consistent across architectures */
39#define MADV_REMOVE 9 /* remove these pages & resources */
40#define MADV_DONTFORK 10 /* don't inherit across fork */
41#define MADV_DOFORK 11 /* do inherit across fork */
Andi Kleen9893e492009-09-16 11:50:17 +020042#define MADV_HWPOISON 100 /* poison a page for testing */
Andi Kleenafcf9382009-12-16 12:20:00 +010043#define MADV_SOFT_OFFLINE 101 /* soft offline page for testing */
Michael S. Tsirkin5f6164f2006-02-15 15:17:39 -080044
Hugh Dickinsd19f3522009-09-21 17:01:53 -070045#define MADV_MERGEABLE 12 /* KSM may merge identical pages */
46#define MADV_UNMERGEABLE 13 /* KSM may not merge identical pages */
47
Michael S. Tsirkin5f6164f2006-02-15 15:17:39 -080048/* compatibility flags */
Michael S. Tsirkin5f6164f2006-02-15 15:17:39 -080049#define MAP_FILE 0
50
Arnd Bergmann63b852a2009-05-13 22:56:24 +000051#endif /* __ASM_GENERIC_MMAN_COMMON_H */