Linux Kernel  3.7.1
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mman.h
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1 #ifndef __ALPHA_MMAN_H__
2 #define __ALPHA_MMAN_H__
3 
4 #define PROT_READ 0x1 /* page can be read */
5 #define PROT_WRITE 0x2 /* page can be written */
6 #define PROT_EXEC 0x4 /* page can be executed */
7 #define PROT_SEM 0x8 /* page may be used for atomic ops */
8 #define PROT_NONE 0x0 /* page can not be accessed */
9 #define PROT_GROWSDOWN 0x01000000 /* mprotect flag: extend change to start of growsdown vma */
10 #define PROT_GROWSUP 0x02000000 /* mprotect flag: extend change to end of growsup vma */
11 
12 #define MAP_SHARED 0x01 /* Share changes */
13 #define MAP_PRIVATE 0x02 /* Changes are private */
14 #define MAP_TYPE 0x0f /* Mask for type of mapping (OSF/1 is _wrong_) */
15 #define MAP_FIXED 0x100 /* Interpret addr exactly */
16 #define MAP_ANONYMOUS 0x10 /* don't use a file */
17 
18 /* not used by linux, but here to make sure we don't clash with OSF/1 defines */
19 #define _MAP_HASSEMAPHORE 0x0200
20 #define _MAP_INHERIT 0x0400
21 #define _MAP_UNALIGNED 0x0800
22 
23 /* These are linux-specific */
24 #define MAP_GROWSDOWN 0x01000 /* stack-like segment */
25 #define MAP_DENYWRITE 0x02000 /* ETXTBSY */
26 #define MAP_EXECUTABLE 0x04000 /* mark it as an executable */
27 #define MAP_LOCKED 0x08000 /* lock the mapping */
28 #define MAP_NORESERVE 0x10000 /* don't check for reservations */
29 #define MAP_POPULATE 0x20000 /* populate (prefault) pagetables */
30 #define MAP_NONBLOCK 0x40000 /* do not block on IO */
31 #define MAP_STACK 0x80000 /* give out an address that is best suited for process/thread stacks */
32 #define MAP_HUGETLB 0x100000 /* create a huge page mapping */
33 
34 #define MS_ASYNC 1 /* sync memory asynchronously */
35 #define MS_SYNC 2 /* synchronous memory sync */
36 #define MS_INVALIDATE 4 /* invalidate the caches */
37 
38 #define MCL_CURRENT 8192 /* lock all currently mapped pages */
39 #define MCL_FUTURE 16384 /* lock all additions to address space */
40 
41 #define MADV_NORMAL 0 /* no further special treatment */
42 #define MADV_RANDOM 1 /* expect random page references */
43 #define MADV_SEQUENTIAL 2 /* expect sequential page references */
44 #define MADV_WILLNEED 3 /* will need these pages */
45 #define MADV_SPACEAVAIL 5 /* ensure resources are available */
46 #define MADV_DONTNEED 6 /* don't need these pages */
47 
48 /* common/generic parameters */
49 #define MADV_REMOVE 9 /* remove these pages & resources */
50 #define MADV_DONTFORK 10 /* don't inherit across fork */
51 #define MADV_DOFORK 11 /* do inherit across fork */
52 
53 #define MADV_MERGEABLE 12 /* KSM may merge identical pages */
54 #define MADV_UNMERGEABLE 13 /* KSM may not merge identical pages */
55 
56 #define MADV_HUGEPAGE 14 /* Worth backing with hugepages */
57 #define MADV_NOHUGEPAGE 15 /* Not worth backing with hugepages */
58 
59 #define MADV_DONTDUMP 16 /* Explicity exclude from the core dump,
60  overrides the coredump filter bits */
61 #define MADV_DODUMP 17 /* Clear the MADV_NODUMP flag */
62 
63 /* compatibility flags */
64 #define MAP_FILE 0
65 
66 #endif /* __ALPHA_MMAN_H__ */