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Linux kernel mirror (for testing)
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1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * tools/testing/selftests/kvm/include/numaif.h
4 *
5 * Copyright (C) 2020, Google LLC.
6 *
7 * This work is licensed under the terms of the GNU GPL, version 2.
8 *
9 * Header file that provides access to NUMA API functions not explicitly
10 * exported to user space.
11 */
12
13#ifndef SELFTEST_KVM_NUMAIF_H
14#define SELFTEST_KVM_NUMAIF_H
15
16#define __NR_get_mempolicy 239
17#define __NR_migrate_pages 256
18
19/* System calls */
20long get_mempolicy(int *policy, const unsigned long *nmask,
21 unsigned long maxnode, void *addr, int flags)
22{
23 return syscall(__NR_get_mempolicy, policy, nmask,
24 maxnode, addr, flags);
25}
26
27long migrate_pages(int pid, unsigned long maxnode,
28 const unsigned long *frommask,
29 const unsigned long *tomask)
30{
31 return syscall(__NR_migrate_pages, pid, maxnode, frommask, tomask);
32}
33
34/* Policies */
35#define MPOL_DEFAULT 0
36#define MPOL_PREFERRED 1
37#define MPOL_BIND 2
38#define MPOL_INTERLEAVE 3
39
40#define MPOL_MAX MPOL_INTERLEAVE
41
42/* Flags for get_mem_policy */
43#define MPOL_F_NODE (1<<0) /* return next il node or node of address */
44 /* Warning: MPOL_F_NODE is unsupported and
45 * subject to change. Don't use.
46 */
47#define MPOL_F_ADDR (1<<1) /* look up vma using address */
48#define MPOL_F_MEMS_ALLOWED (1<<2) /* query nodes allowed in cpuset */
49
50/* Flags for mbind */
51#define MPOL_MF_STRICT (1<<0) /* Verify existing pages in the mapping */
52#define MPOL_MF_MOVE (1<<1) /* Move pages owned by this process to conform to mapping */
53#define MPOL_MF_MOVE_ALL (1<<2) /* Move every page to conform to mapping */
54
55#endif /* SELFTEST_KVM_NUMAIF_H */