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1/*
2 * NUMA memory policies for Linux.
3 * Copyright 2003,2004 Andi Kleen SuSE Labs
4 */
5#ifndef _UAPI_LINUX_MEMPOLICY_H
6#define _UAPI_LINUX_MEMPOLICY_H
7
8#include <linux/errno.h>
9
10
11/*
12 * Both the MPOL_* mempolicy mode and the MPOL_F_* optional mode flags are
13 * passed by the user to either set_mempolicy() or mbind() in an 'int' actual.
14 * The MPOL_MODE_FLAGS macro determines the legal set of optional mode flags.
15 */
16
17/* Policies */
18enum {
19 MPOL_DEFAULT,
20 MPOL_PREFERRED,
21 MPOL_BIND,
22 MPOL_INTERLEAVE,
23 MPOL_MAX, /* always last member of enum */
24};
25
26enum mpol_rebind_step {
27 MPOL_REBIND_ONCE, /* do rebind work at once(not by two step) */
28 MPOL_REBIND_STEP1, /* first step(set all the newly nodes) */
29 MPOL_REBIND_STEP2, /* second step(clean all the disallowed nodes)*/
30 MPOL_REBIND_NSTEP,
31};
32
33/* Flags for set_mempolicy */
34#define MPOL_F_STATIC_NODES (1 << 15)
35#define MPOL_F_RELATIVE_NODES (1 << 14)
36
37/*
38 * MPOL_MODE_FLAGS is the union of all possible optional mode flags passed to
39 * either set_mempolicy() or mbind().
40 */
41#define MPOL_MODE_FLAGS (MPOL_F_STATIC_NODES | MPOL_F_RELATIVE_NODES)
42
43/* Flags for get_mempolicy */
44#define MPOL_F_NODE (1<<0) /* return next IL mode instead of node mask */
45#define MPOL_F_ADDR (1<<1) /* look up vma using address */
46#define MPOL_F_MEMS_ALLOWED (1<<2) /* return allowed memories */
47
48/* Flags for mbind */
49#define MPOL_MF_STRICT (1<<0) /* Verify existing pages in the mapping */
50#define MPOL_MF_MOVE (1<<1) /* Move pages owned by this process to conform to mapping */
51#define MPOL_MF_MOVE_ALL (1<<2) /* Move every page to conform to mapping */
52#define MPOL_MF_INTERNAL (1<<3) /* Internal flags start here */
53
54/*
55 * Internal flags that share the struct mempolicy flags word with
56 * "mode flags". These flags are allocated from bit 0 up, as they
57 * are never OR'ed into the mode in mempolicy API arguments.
58 */
59#define MPOL_F_SHARED (1 << 0) /* identify shared policies */
60#define MPOL_F_LOCAL (1 << 1) /* preferred local allocation */
61#define MPOL_F_REBINDING (1 << 2) /* identify policies in rebinding */
62
63
64#endif /* _UAPI_LINUX_MEMPOLICY_H */