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