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

/*
 * 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 mapping */
#define MPOL_MF_MOVE_ALL (1<<2)	/* Move every page to conform to mapping */
#define MPOL_MF_INTERNAL (1<<3)	/* Internal flags start here */

/*
 * 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 */


#endif /* _UAPI_LINUX_MEMPOLICY_H */
Commit	Line	Data
607ca46e DH	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 */
	18	enum {
	19	MPOL_DEFAULT,
	20	MPOL_PREFERRED,
	21	MPOL_BIND,
	22	MPOL_INTERLEAVE,
479e2802	23	MPOL_LOCAL,
d3a71033	24	MPOL_NOOP, /* retain existing policy for range */
607ca46e DH	25	MPOL_MAX, /* always last member of enum */
	26	};
	27
	28	enum mpol_rebind_step {
	29	MPOL_REBIND_ONCE, /* do rebind work at once(not by two step) */
	30	MPOL_REBIND_STEP1, /* first step(set all the newly nodes) */
	31	MPOL_REBIND_STEP2, /* second step(clean all the disallowed nodes)*/
	32	MPOL_REBIND_NSTEP,
	33	};
	34
	35	/* Flags for set_mempolicy */
	36	#define MPOL_F_STATIC_NODES (1 << 15)
	37	#define MPOL_F_RELATIVE_NODES (1 << 14)
	38
	39	/*
	40	* MPOL_MODE_FLAGS is the union of all possible optional mode flags passed to
	41	* either set_mempolicy() or mbind().
	42	*/
	43	#define MPOL_MODE_FLAGS (MPOL_F_STATIC_NODES \| MPOL_F_RELATIVE_NODES)
	44
	45	/* Flags for get_mempolicy */
	46	#define MPOL_F_NODE (1<<0) /* return next IL mode instead of node mask */
	47	#define MPOL_F_ADDR (1<<1) /* look up vma using address */
	48	#define MPOL_F_MEMS_ALLOWED (1<<2) /* return allowed memories */
	49
	50	/* Flags for mbind */
	51	#define MPOL_MF_STRICT (1<<0) /* Verify existing pages in the mapping */
	52	#define MPOL_MF_MOVE (1<<1) /* Move pages owned by this process to conform to mapping */
	53	#define MPOL_MF_MOVE_ALL (1<<2) /* Move every page to conform to mapping */
	54	#define MPOL_MF_INTERNAL (1<<3) /* Internal flags start here */
	55
	56	/*
	57	* Internal flags that share the struct mempolicy flags word with
	58	* "mode flags". These flags are allocated from bit 0 up, as they
	59	* are never OR'ed into the mode in mempolicy API arguments.
	60	*/
	61	#define MPOL_F_SHARED (1 << 0) /* identify shared policies */
	62	#define MPOL_F_LOCAL (1 << 1) /* preferred local allocation */
	63	#define MPOL_F_REBINDING (1 << 2) /* identify policies in rebinding */
	64
	65
	66	#endif /* _UAPI_LINUX_MEMPOLICY_H */