arch/alpha/include/asm/mman.h

   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 /* compatibility flags */
  60 #define MAP_FILE        0
  61
  62 #endif /* __ALPHA_MMAN_H__ */