release/src-rt-6.x.4708/linux/linux-2.6.36/include/asm-generic/mman-common.h

   1 #ifndef __ASM_GENERIC_MMAN_COMMON_H
   2 #define __ASM_GENERIC_MMAN_COMMON_H
   3
   4
   5 #define PROT_READ       0x1             /* page can be read */
   6 #define PROT_WRITE      0x2             /* page can be written */
   7 #define PROT_EXEC       0x4             /* page can be executed */
   8 #define PROT_SEM        0x8             /* page may be used for atomic ops */
   9 #define PROT_NONE       0x0             /* page can not be accessed */
  10 #define PROT_GROWSDOWN  0x01000000      /* mprotect flag: extend change to start of growsdown vma */
  11 #define PROT_GROWSUP    0x02000000      /* mprotect flag: extend change to end of growsup vma */
  12
  13 #define MAP_SHARED      0x01            /* Share changes */
  14 #define MAP_PRIVATE     0x02            /* Changes are private */
  15 #define MAP_TYPE        0x0f            /* Mask for type of mapping */
  16 #define MAP_FIXED       0x10            /* Interpret addr exactly */
  17 #define MAP_ANONYMOUS   0x20            /* don't use a file */
  18 #ifdef CONFIG_MMAP_ALLOW_UNINITIALIZED
  19 # define MAP_UNINITIALIZED 0x4000000    /* For anonymous mmap, memory could be uninitialized */
  20 #else
  21 # define MAP_UNINITIALIZED 0x0          /* Don't support this flag */
  22 #endif
  23
  24 #define MS_ASYNC        1               /* sync memory asynchronously */
  25 #define MS_INVALIDATE   2               /* invalidate the caches */
  26 #define MS_SYNC         4               /* synchronous memory sync */
  27
  28 #define MADV_NORMAL     0               /* no further special treatment */
  29 #define MADV_RANDOM     1               /* expect random page references */
  30 #define MADV_SEQUENTIAL 2               /* expect sequential page references */
  31 #define MADV_WILLNEED   3               /* will need these pages */
  32 #define MADV_DONTNEED   4               /* don't need these pages */
  33
  34 /* common parameters: try to keep these consistent across architectures */
  35 #define MADV_REMOVE     9               /* remove these pages & resources */
  36 #define MADV_DONTFORK   10              /* don't inherit across fork */
  37 #define MADV_DOFORK     11              /* do inherit across fork */
  38 #define MADV_HWPOISON   100             /* poison a page for testing */
  39 #define MADV_SOFT_OFFLINE 101           /* soft offline page for testing */
  40
  41 #define MADV_MERGEABLE   12             /* KSM may merge identical pages */
  42 #define MADV_UNMERGEABLE 13             /* KSM may not merge identical pages */
  43
  44 /* compatibility flags */
  45 #define MAP_FILE        0
  46
  47 #endif /* __ASM_GENERIC_MMAN_COMMON_H */