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6f52b16c | 1 | /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
607ca46e DH |
2 | /* |
3 | * NUMA memory policies for Linux. | |
4 | * Copyright 2003,2004 Andi Kleen SuSE Labs | |
5 | */ | |
6 | #ifndef _UAPI_LINUX_MEMPOLICY_H | |
7 | #define _UAPI_LINUX_MEMPOLICY_H | |
8 | ||
9 | #include <linux/errno.h> | |
10 | ||
11 | ||
12 | /* | |
13 | * Both the MPOL_* mempolicy mode and the MPOL_F_* optional mode flags are | |
14 | * passed by the user to either set_mempolicy() or mbind() in an 'int' actual. | |
15 | * The MPOL_MODE_FLAGS macro determines the legal set of optional mode flags. | |
16 | */ | |
17 | ||
18 | /* Policies */ | |
19 | enum { | |
20 | MPOL_DEFAULT, | |
21 | MPOL_PREFERRED, | |
22 | MPOL_BIND, | |
23 | MPOL_INTERLEAVE, | |
479e2802 | 24 | MPOL_LOCAL, |
b27abacc | 25 | MPOL_PREFERRED_MANY, |
607ca46e DH |
26 | MPOL_MAX, /* always last member of enum */ |
27 | }; | |
28 | ||
607ca46e DH |
29 | /* Flags for set_mempolicy */ |
30 | #define MPOL_F_STATIC_NODES (1 << 15) | |
31 | #define MPOL_F_RELATIVE_NODES (1 << 14) | |
bda420b9 | 32 | #define MPOL_F_NUMA_BALANCING (1 << 13) /* Optimize with NUMA balancing if possible */ |
607ca46e DH |
33 | |
34 | /* | |
35 | * MPOL_MODE_FLAGS is the union of all possible optional mode flags passed to | |
36 | * either set_mempolicy() or mbind(). | |
37 | */ | |
bda420b9 HY |
38 | #define MPOL_MODE_FLAGS \ |
39 | (MPOL_F_STATIC_NODES | MPOL_F_RELATIVE_NODES | MPOL_F_NUMA_BALANCING) | |
607ca46e DH |
40 | |
41 | /* Flags for get_mempolicy */ | |
42 | #define MPOL_F_NODE (1<<0) /* return next IL mode instead of node mask */ | |
43 | #define MPOL_F_ADDR (1<<1) /* look up vma using address */ | |
44 | #define MPOL_F_MEMS_ALLOWED (1<<2) /* return allowed memories */ | |
45 | ||
46 | /* Flags for mbind */ | |
47 | #define MPOL_MF_STRICT (1<<0) /* Verify existing pages in the mapping */ | |
b24f53a0 LS |
48 | #define MPOL_MF_MOVE (1<<1) /* Move pages owned by this process to conform |
49 | to policy */ | |
50 | #define MPOL_MF_MOVE_ALL (1<<2) /* Move every page to conform to policy */ | |
51 | #define MPOL_MF_LAZY (1<<3) /* Modifies '_MOVE: lazy migrate on fault */ | |
52 | #define MPOL_MF_INTERNAL (1<<4) /* Internal flags start here */ | |
53 | ||
54 | #define MPOL_MF_VALID (MPOL_MF_STRICT | \ | |
55 | MPOL_MF_MOVE | \ | |
a720094d | 56 | MPOL_MF_MOVE_ALL) |
607ca46e DH |
57 | |
58 | /* | |
59 | * Internal flags that share the struct mempolicy flags word with | |
60 | * "mode flags". These flags are allocated from bit 0 up, as they | |
61 | * are never OR'ed into the mode in mempolicy API arguments. | |
62 | */ | |
63 | #define MPOL_F_SHARED (1 << 0) /* identify shared policies */ | |
771fb4d8 | 64 | #define MPOL_F_MOF (1 << 3) /* this policy wants migrate on fault */ |
8a0516ed | 65 | #define MPOL_F_MORON (1 << 4) /* Migrate On protnone Reference On Node */ |
607ca46e | 66 | |
b6676de8 DH |
67 | /* |
68 | * These bit locations are exposed in the vm.zone_reclaim_mode sysctl | |
69 | * ABI. New bits are OK, but existing bits can never change. | |
70 | */ | |
71 | #define RECLAIM_ZONE (1<<0) /* Run shrink_inactive_list on the zone */ | |
72 | #define RECLAIM_WRITE (1<<1) /* Writeout pages during reclaim */ | |
73 | #define RECLAIM_UNMAP (1<<2) /* Unmap pages during reclaim */ | |
607ca46e DH |
74 | |
75 | #endif /* _UAPI_LINUX_MEMPOLICY_H */ |