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The C and C++ Include Header Files

/usr/include/linux/mempolicy.h


$ cat -n /usr/include/linux/mempolicy.h

     1	/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
     2	/*
     3	 * NUMA memory policies for Linux.
     4	 * Copyright 2003,2004 Andi Kleen SuSE Labs
     5	 */
     6	#ifndef _LINUX_MEMPOLICY_H
     7	#define _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,
    24		MPOL_LOCAL,
    25		MPOL_PREFERRED_MANY,
    26		MPOL_MAX,	/* always last member of enum */
    27	};
    28	
    29	/* Flags for set_mempolicy */
    30	#define MPOL_F_STATIC_NODES	(1 << 15)
    31	#define MPOL_F_RELATIVE_NODES	(1 << 14)
    32	#define MPOL_F_NUMA_BALANCING	(1 << 13) /* Optimize with NUMA balancing if possible */
    33	
    34	/*
    35	 * MPOL_MODE_FLAGS is the union of all possible optional mode flags passed to
    36	 * either set_mempolicy() or mbind().
    37	 */
    38	#define MPOL_MODE_FLAGS							\
    39		(MPOL_F_STATIC_NODES | MPOL_F_RELATIVE_NODES | MPOL_F_NUMA_BALANCING)
    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 */
    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)	/* UNSUPPORTED FLAG: 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     | 	\
    56				 MPOL_MF_MOVE_ALL)
    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 */
    64	#define MPOL_F_MOF	(1 << 3) /* this policy wants migrate on fault */
    65	#define MPOL_F_MORON	(1 << 4) /* Migrate On protnone Reference On Node */
    66	
    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 */
    74	
    75	#endif /* _LINUX_MEMPOLICY_H */