1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2#ifndef _UAPI_LINUX_MMAN_H
3#define _UAPI_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
45struct cachestat_range {
46 __u64 off;
47 __u64 len;
48};
49
50struct 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 /* _UAPI_LINUX_MMAN_H */
59

source code of linux/include/uapi/linux/mman.h