2 * NUMA memory policies for Linux.
3 * Copyright 2003,2004 Andi Kleen SuSE Labs
5 #ifndef _UAPI_LINUX_MEMPOLICY_H
6 #define _UAPI_LINUX_MEMPOLICY_H
8 #include <linux/errno.h>
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.
23 MPOL_MAX
, /* always last member of enum */
26 enum 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)*/
33 /* Flags for set_mempolicy */
34 #define MPOL_F_STATIC_NODES (1 << 15)
35 #define MPOL_F_RELATIVE_NODES (1 << 14)
38 * MPOL_MODE_FLAGS is the union of all possible optional mode flags passed to
39 * either set_mempolicy() or mbind().
41 #define MPOL_MODE_FLAGS (MPOL_F_STATIC_NODES | MPOL_F_RELATIVE_NODES)
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 */
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 */
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.
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 */
64 #endif /* _UAPI_LINUX_MEMPOLICY_H */