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/*
* NUMA memory policies for Linux.
* Copyright 2003,2004 Andi Kleen SuSE Labs
*/
#ifndef _UAPI_LINUX_MEMPOLICY_H
#define _UAPI_LINUX_MEMPOLICY_H
#include <linux/errno.h>
/*
* Both the MPOL_* mempolicy mode and the MPOL_F_* optional mode flags are
* passed by the user to either set_mempolicy() or mbind() in an 'int' actual.
* The MPOL_MODE_FLAGS macro determines the legal set of optional mode flags.
*/
/* Policies */
enum {
MPOL_DEFAULT,
MPOL_PREFERRED,
MPOL_BIND,
MPOL_INTERLEAVE,
MPOL_LOCAL,
MPOL_NOOP, /* retain existing policy for range */
MPOL_MAX, /* always last member of enum */
};
enum mpol_rebind_step {
MPOL_REBIND_ONCE, /* do rebind work at once(not by two step) */
MPOL_REBIND_STEP1, /* first step(set all the newly nodes) */
MPOL_REBIND_STEP2, /* second step(clean all the disallowed nodes)*/
MPOL_REBIND_NSTEP,
};
/* Flags for set_mempolicy */
#define MPOL_F_STATIC_NODES (1 << 15)
#define MPOL_F_RELATIVE_NODES (1 << 14)
/*
* MPOL_MODE_FLAGS is the union of all possible optional mode flags passed to
* either set_mempolicy() or mbind().
*/
#define MPOL_MODE_FLAGS (MPOL_F_STATIC_NODES | MPOL_F_RELATIVE_NODES)
/* Flags for get_mempolicy */
#define MPOL_F_NODE (1<<0) /* return next IL mode instead of node mask */
#define MPOL_F_ADDR (1<<1) /* look up vma using address */
#define MPOL_F_MEMS_ALLOWED (1<<2) /* return allowed memories */
/* Flags for mbind */
#define MPOL_MF_STRICT (1<<0) /* Verify existing pages in the mapping */
#define MPOL_MF_MOVE (1<<1) /* Move pages owned by this process to conform
to policy */
#define MPOL_MF_MOVE_ALL (1<<2) /* Move every page to conform to policy */
#define MPOL_MF_LAZY (1<<3) /* Modifies '_MOVE: lazy migrate on fault */
#define MPOL_MF_INTERNAL (1<<4) /* Internal flags start here */
#define MPOL_MF_VALID (MPOL_MF_STRICT | \
MPOL_MF_MOVE | \
MPOL_MF_MOVE_ALL | \
MPOL_MF_LAZY)
/*
* Internal flags that share the struct mempolicy flags word with
* "mode flags". These flags are allocated from bit 0 up, as they
* are never OR'ed into the mode in mempolicy API arguments.
*/
#define MPOL_F_SHARED (1 << 0) /* identify shared policies */
#define MPOL_F_LOCAL (1 << 1) /* preferred local allocation */
#define MPOL_F_REBINDING (1 << 2) /* identify policies in rebinding */
#define MPOL_F_MOF (1 << 3) /* this policy wants migrate on fault */
#endif /* _UAPI_LINUX_MEMPOLICY_H */
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