linux-headers/linux/mman.h

   1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
   2 #ifndef _LINUX_MMAN_H
   3 #define _LINUX_MMAN_H
   4
   5 #include <asm/mman.h>
   6 #include <asm-generic/hugetlb_encode.h>
   7 #include <linux/types.h>
   8
   9 #define MREMAP_MAYMOVE          1
  10 #define MREMAP_FIXED            2
  11 #define MREMAP_DONTUNMAP        4
  12
  13 #define OVERCOMMIT_GUESS                0
  14 #define OVERCOMMIT_ALWAYS               1
  15 #define OVERCOMMIT_NEVER                2
  16
  17 #define MAP_SHARED      0x01            /* Share changes */
  18 #define MAP_PRIVATE     0x02            /* Changes are private */
  19 #define MAP_SHARED_VALIDATE 0x03        /* share + validate extension flags */
  20
  21 /*
  22  * Huge page size encoding when MAP_HUGETLB is specified, and a huge page
  23  * size other than the default is desired.  See hugetlb_encode.h.
  24  * All known huge page size encodings are provided here.  It is the
  25  * responsibility of the application to know which sizes are supported on
  26  * the running system.  See mmap(2) man page for details.
  27  */
  28 #define MAP_HUGE_SHIFT  HUGETLB_FLAG_ENCODE_SHIFT
  29 #define MAP_HUGE_MASK   HUGETLB_FLAG_ENCODE_MASK
  30
  31 #define MAP_HUGE_16KB   HUGETLB_FLAG_ENCODE_16KB
  32 #define MAP_HUGE_64KB   HUGETLB_FLAG_ENCODE_64KB
  33 #define MAP_HUGE_512KB  HUGETLB_FLAG_ENCODE_512KB
  34 #define MAP_HUGE_1MB    HUGETLB_FLAG_ENCODE_1MB
  35 #define MAP_HUGE_2MB    HUGETLB_FLAG_ENCODE_2MB
  36 #define MAP_HUGE_8MB    HUGETLB_FLAG_ENCODE_8MB
  37 #define MAP_HUGE_16MB   HUGETLB_FLAG_ENCODE_16MB
  38 #define MAP_HUGE_32MB   HUGETLB_FLAG_ENCODE_32MB
  39 #define MAP_HUGE_256MB  HUGETLB_FLAG_ENCODE_256MB
  40 #define MAP_HUGE_512MB  HUGETLB_FLAG_ENCODE_512MB
  41 #define MAP_HUGE_1GB    HUGETLB_FLAG_ENCODE_1GB
  42 #define MAP_HUGE_2GB    HUGETLB_FLAG_ENCODE_2GB
  43 #define MAP_HUGE_16GB   HUGETLB_FLAG_ENCODE_16GB
  44
  45 struct cachestat_range {
  46         __u64 off;
  47         __u64 len;
  48 };
  49
  50 struct cachestat {
  51         __u64 nr_cache;
  52         __u64 nr_dirty;
  53         __u64 nr_writeback;
  54         __u64 nr_evicted;
  55         __u64 nr_recently_evicted;
  56 };
  57
  58 #endif /* _LINUX_MMAN_H */