[mirror_ubuntu-bionic-kernel.git] / include / uapi / linux / mempolicy.h

/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
/*
 * 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_MAX,	/* always last member of enum */
};

/* 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)

/*
 * 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_MOF	(1 << 3) /* this policy wants migrate on fault */
#define MPOL_F_MORON	(1 << 4) /* Migrate On protnone Reference On Node */


#endif /* _UAPI_LINUX_MEMPOLICY_H */
Commit	Line	Data
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,
607ca46e DH	25	MPOL_MAX, /* always last member of enum */
	26	};
	27
607ca46e DH	28	/* Flags for set_mempolicy */
	29	#define MPOL_F_STATIC_NODES (1 << 15)
	30	#define MPOL_F_RELATIVE_NODES (1 << 14)
	31
	32	/*
	33	* MPOL_MODE_FLAGS is the union of all possible optional mode flags passed to
	34	* either set_mempolicy() or mbind().
	35	*/
	36	#define MPOL_MODE_FLAGS (MPOL_F_STATIC_NODES \| MPOL_F_RELATIVE_NODES)
	37
	38	/* Flags for get_mempolicy */
	39	#define MPOL_F_NODE (1<<0) /* return next IL mode instead of node mask */
	40	#define MPOL_F_ADDR (1<<1) /* look up vma using address */
	41	#define MPOL_F_MEMS_ALLOWED (1<<2) /* return allowed memories */
	42
	43	/* Flags for mbind */
	44	#define MPOL_MF_STRICT (1<<0) /* Verify existing pages in the mapping */
b24f53a0 LS	45	#define MPOL_MF_MOVE (1<<1) /* Move pages owned by this process to conform
	46	to policy */
	47	#define MPOL_MF_MOVE_ALL (1<<2) /* Move every page to conform to policy */
	48	#define MPOL_MF_LAZY (1<<3) /* Modifies '_MOVE: lazy migrate on fault */
	49	#define MPOL_MF_INTERNAL (1<<4) /* Internal flags start here */
	50
	51	#define MPOL_MF_VALID (MPOL_MF_STRICT \| \
	52	MPOL_MF_MOVE \| \
a720094d	53	MPOL_MF_MOVE_ALL)
607ca46e DH	54
	55	/*
	56	* Internal flags that share the struct mempolicy flags word with
	57	* "mode flags". These flags are allocated from bit 0 up, as they
	58	* are never OR'ed into the mode in mempolicy API arguments.
	59	*/
	60	#define MPOL_F_SHARED (1 << 0) /* identify shared policies */
	61	#define MPOL_F_LOCAL (1 << 1) /* preferred local allocation */
771fb4d8	62	#define MPOL_F_MOF (1 << 3) /* this policy wants migrate on fault */
8a0516ed	63	#define MPOL_F_MORON (1 << 4) /* Migrate On protnone Reference On Node */
607ca46e DH	64
	65
	66	#endif /* _UAPI_LINUX_MEMPOLICY_H */