[deliverable/linux.git] / include / linux / mempolicy.h

#ifndef _LINUX_MEMPOLICY_H
#define _LINUX_MEMPOLICY_H 1

#include <linux/errno.h>

/*
 * NUMA memory policies for Linux.
 * Copyright 2003,2004 Andi Kleen SuSE Labs
 */

/*
 * 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_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 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 */

#ifdef __KERNEL__

#include <linux/mmzone.h>
#include <linux/slab.h>
#include <linux/rbtree.h>
#include <linux/spinlock.h>
#include <linux/nodemask.h>
#include <linux/pagemap.h>

struct mm_struct;

#ifdef CONFIG_NUMA

/*
 * Describe a memory policy.
 *
 * A mempolicy can be either associated with a process or with a VMA.
 * For VMA related allocations the VMA policy is preferred, otherwise
 * the process policy is used. Interrupts ignore the memory policy
 * of the current process.
 *
 * Locking policy for interlave:
 * In process context there is no locking because only the process accesses
 * its own state. All vma manipulation is somewhat protected by a down_read on
 * mmap_sem.
 *
 * Freeing policy:
 * Mempolicy objects are reference counted.  A mempolicy will be freed when
 * mpol_put() decrements the reference count to zero.
 *
 * Duplicating policy objects:
 * mpol_dup() allocates a new mempolicy and copies the specified mempolicy
 * to the new storage.  The reference count of the new object is initialized
 * to 1, representing the caller of mpol_dup().
 */
struct mempolicy {
	atomic_t refcnt;
	unsigned short mode; 	/* See MPOL_* above */
	unsigned short flags;	/* See set_mempolicy() MPOL_F_* above */
	union {
		short 		 preferred_node; /* preferred */
		nodemask_t	 nodes;		/* interleave/bind */
		/* undefined for default */
	} v;
	union {
		nodemask_t cpuset_mems_allowed;	/* relative to these nodes */
		nodemask_t user_nodemask;	/* nodemask passed by user */
	} w;
};

/*
 * Support for managing mempolicy data objects (clone, copy, destroy)
 * The default fast path of a NULL MPOL_DEFAULT policy is always inlined.
 */

extern void __mpol_put(struct mempolicy *pol);
static inline void mpol_put(struct mempolicy *pol)
{
	if (pol)
		__mpol_put(pol);
}

/*
 * Does mempolicy pol need explicit unref after use?
 * Currently only needed for shared policies.
 */
static inline int mpol_needs_cond_ref(struct mempolicy *pol)
{
	return (pol && (pol->flags & MPOL_F_SHARED));
}

static inline void mpol_cond_put(struct mempolicy *pol)
{
	if (mpol_needs_cond_ref(pol))
		__mpol_put(pol);
}

extern struct mempolicy *__mpol_cond_copy(struct mempolicy *tompol,
					  struct mempolicy *frompol);
static inline struct mempolicy *mpol_cond_copy(struct mempolicy *tompol,
						struct mempolicy *frompol)
{
	if (!frompol)
		return frompol;
	return __mpol_cond_copy(tompol, frompol);
}

extern struct mempolicy *__mpol_dup(struct mempolicy *pol);
static inline struct mempolicy *mpol_dup(struct mempolicy *pol)
{
	if (pol)
		pol = __mpol_dup(pol);
	return pol;
}

#define vma_policy(vma) ((vma)->vm_policy)
#define vma_set_policy(vma, pol) ((vma)->vm_policy = (pol))

static inline void mpol_get(struct mempolicy *pol)
{
	if (pol)
		atomic_inc(&pol->refcnt);
}

extern int __mpol_equal(struct mempolicy *a, struct mempolicy *b);
static inline int mpol_equal(struct mempolicy *a, struct mempolicy *b)
{
	if (a == b)
		return 1;
	return __mpol_equal(a, b);
}

/*
 * Tree of shared policies for a shared memory region.
 * Maintain the policies in a pseudo mm that contains vmas. The vmas
 * carry the policy. As a special twist the pseudo mm is indexed in pages, not
 * bytes, so that we can work with shared memory segments bigger than
 * unsigned long.
 */

struct sp_node {
	struct rb_node nd;
	unsigned long start, end;
	struct mempolicy *policy;
};

struct shared_policy {
	struct rb_root root;
	spinlock_t lock;
};

void mpol_shared_policy_init(struct shared_policy *sp, struct mempolicy *mpol);
int mpol_set_shared_policy(struct shared_policy *info,
				struct vm_area_struct *vma,
				struct mempolicy *new);
void mpol_free_shared_policy(struct shared_policy *p);
struct mempolicy *mpol_shared_policy_lookup(struct shared_policy *sp,
					    unsigned long idx);

extern void numa_default_policy(void);
extern void numa_policy_init(void);
extern void mpol_rebind_task(struct task_struct *tsk,
					const nodemask_t *new);
extern void mpol_rebind_mm(struct mm_struct *mm, nodemask_t *new);
extern void mpol_fix_fork_child_flag(struct task_struct *p);

extern struct zonelist *huge_zonelist(struct vm_area_struct *vma,
				unsigned long addr, gfp_t gfp_flags,
				struct mempolicy **mpol, nodemask_t **nodemask);
extern unsigned slab_node(struct mempolicy *policy);

extern enum zone_type policy_zone;

static inline void check_highest_zone(enum zone_type k)
{
	if (k > policy_zone && k != ZONE_MOVABLE)
		policy_zone = k;
}

int do_migrate_pages(struct mm_struct *mm,
	const nodemask_t *from_nodes, const nodemask_t *to_nodes, int flags);


#ifdef CONFIG_TMPFS
extern int mpol_parse_str(char *str, struct mempolicy **mpol, int no_context);

extern int mpol_to_str(char *buffer, int maxlen, struct mempolicy *pol,
			int no_context);
#endif

/* Check if a vma is migratable */
static inline int vma_migratable(struct vm_area_struct *vma)
{
	if (vma->vm_flags & (VM_IO|VM_HUGETLB|VM_PFNMAP|VM_RESERVED))
		return 0;
	/*
	 * Migration allocates pages in the highest zone. If we cannot
	 * do so then migration (at least from node to node) is not
	 * possible.
	 */
	if (vma->vm_file &&
		gfp_zone(mapping_gfp_mask(vma->vm_file->f_mapping))
								< policy_zone)
			return 0;
	return 1;
}

#else

struct mempolicy {};

static inline int mpol_equal(struct mempolicy *a, struct mempolicy *b)
{
	return 1;
}

static inline void mpol_put(struct mempolicy *p)
{
}

static inline void mpol_cond_put(struct mempolicy *pol)
{
}

static inline struct mempolicy *mpol_cond_copy(struct mempolicy *to,
						struct mempolicy *from)
{
	return from;
}

static inline void mpol_get(struct mempolicy *pol)
{
}

static inline struct mempolicy *mpol_dup(struct mempolicy *old)
{
	return NULL;
}

struct shared_policy {};

static inline int mpol_set_shared_policy(struct shared_policy *info,
					struct vm_area_struct *vma,
					struct mempolicy *new)
{
	return -EINVAL;
}

static inline void mpol_shared_policy_init(struct shared_policy *sp,
						struct mempolicy *mpol)
{
}

static inline void mpol_free_shared_policy(struct shared_policy *p)
{
}

static inline struct mempolicy *
mpol_shared_policy_lookup(struct shared_policy *sp, unsigned long idx)
{
	return NULL;
}

#define vma_policy(vma) NULL
#define vma_set_policy(vma, pol) do {} while(0)

static inline void numa_policy_init(void)
{
}

static inline void numa_default_policy(void)
{
}

static inline void mpol_rebind_task(struct task_struct *tsk,
					const nodemask_t *new)
{
}

static inline void mpol_rebind_mm(struct mm_struct *mm, nodemask_t *new)
{
}

static inline void mpol_fix_fork_child_flag(struct task_struct *p)
{
}

static inline struct zonelist *huge_zonelist(struct vm_area_struct *vma,
				unsigned long addr, gfp_t gfp_flags,
				struct mempolicy **mpol, nodemask_t **nodemask)
{
	*mpol = NULL;
	*nodemask = NULL;
	return node_zonelist(0, gfp_flags);
}

static inline int do_migrate_pages(struct mm_struct *mm,
			const nodemask_t *from_nodes,
			const nodemask_t *to_nodes, int flags)
{
	return 0;
}

static inline void check_highest_zone(int k)
{
}

#ifdef CONFIG_TMPFS
static inline int mpol_parse_str(char *str, struct mempolicy **mpol,
				int no_context)
{
	return 1;	/* error */
}

static inline int mpol_to_str(char *buffer, int maxlen, struct mempolicy *pol,
				int no_context)
{
	return 0;
}
#endif

#endif /* CONFIG_NUMA */
#endif /* __KERNEL__ */

#endif
Commit	Line	Data
1da177e4 LT	1	#ifndef _LINUX_MEMPOLICY_H
	2	#define _LINUX_MEMPOLICY_H 1
	3
	4	#include <linux/errno.h>
	5
	6	/*
	7	* NUMA memory policies for Linux.
	8	* Copyright 2003,2004 Andi Kleen SuSE Labs
	9	*/
	10
028fec41 DR	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
1da177e4	17	/* Policies */
a3b51e01 DR	18	enum {
	19	MPOL_DEFAULT,
	20	MPOL_PREFERRED,
	21	MPOL_BIND,
	22	MPOL_INTERLEAVE,
	23	MPOL_MAX, /* always last member of enum */
	24	};
1da177e4	25
028fec41	26	/* Flags for set_mempolicy */
f5b087b5	27	#define MPOL_F_STATIC_NODES (1 << 15)
4c50bc01	28	#define MPOL_F_RELATIVE_NODES (1 << 14)
f5b087b5	29
028fec41 DR	30	/*
	31	* MPOL_MODE_FLAGS is the union of all possible optional mode flags passed to
	32	* either set_mempolicy() or mbind().
	33	*/
4c50bc01	34	#define MPOL_MODE_FLAGS (MPOL_F_STATIC_NODES \| MPOL_F_RELATIVE_NODES)
028fec41 DR	35
028fec41 DR	36	/* Flags for get_mempolicy */
1da177e4 LT	37	#define MPOL_F_NODE (1<<0) /* return next IL mode instead of node mask */
1da177e4 LT	38	#define MPOL_F_ADDR (1<<1) /* look up vma using address */
754af6f5	39	#define MPOL_F_MEMS_ALLOWED (1<<2) /* return allowed memories */
1da177e4 LT	40
	41	/* Flags for mbind */
	42	#define MPOL_MF_STRICT (1<<0) /* Verify existing pages in the mapping */
dc9aa5b9 CL	43	#define MPOL_MF_MOVE (1<<1) /* Move pages owned by this process to conform to mapping */
	44	#define MPOL_MF_MOVE_ALL (1<<2) /* Move every page to conform to mapping */
	45	#define MPOL_MF_INTERNAL (1<<3) /* Internal flags start here */
1da177e4	46
aab0b102 LS	47	/*
	48	* Internal flags that share the struct mempolicy flags word with
	49	* "mode flags". These flags are allocated from bit 0 up, as they
	50	* are never OR'ed into the mode in mempolicy API arguments.
	51	*/
	52	#define MPOL_F_SHARED (1 << 0) /* identify shared policies */
fc36b8d3	53	#define MPOL_F_LOCAL (1 << 1) /* preferred local allocation */
aab0b102	54
1da177e4 LT	55	#ifdef __KERNEL__
1da177e4 LT	56
1da177e4	57	#include <linux/mmzone.h>
1da177e4 LT	58	#include <linux/slab.h>
	59	#include <linux/rbtree.h>
	60	#include <linux/spinlock.h>
dfcd3c0d	61	#include <linux/nodemask.h>
83d1674a	62	#include <linux/pagemap.h>
1da177e4	63
45b35a5c	64	struct mm_struct;
1da177e4 LT	65
	66	#ifdef CONFIG_NUMA
	67
	68	/*
	69	* Describe a memory policy.
	70	*
	71	* A mempolicy can be either associated with a process or with a VMA.
	72	* For VMA related allocations the VMA policy is preferred, otherwise
	73	* the process policy is used. Interrupts ignore the memory policy
	74	* of the current process.
	75	*
	76	* Locking policy for interlave:
	77	* In process context there is no locking because only the process accesses
	78	* its own state. All vma manipulation is somewhat protected by a down_read on
b8072f09	79	* mmap_sem.
1da177e4 LT	80	*
1da177e4 LT	81	* Freeing policy:
19770b32	82	* Mempolicy objects are reference counted. A mempolicy will be freed when
f0be3d32	83	* mpol_put() decrements the reference count to zero.
1da177e4	84	*
846a16bf LS	85	* Duplicating policy objects:
846a16bf LS	86	* mpol_dup() allocates a new mempolicy and copies the specified mempolicy
19770b32	87	* to the new storage. The reference count of the new object is initialized
846a16bf	88	* to 1, representing the caller of mpol_dup().
1da177e4 LT	89	*/
	90	struct mempolicy {
	91	atomic_t refcnt;
45c4745a	92	unsigned short mode; /* See MPOL_* above */
028fec41	93	unsigned short flags; /* See set_mempolicy() MPOL_F_* above */
1da177e4	94	union {
1da177e4	95	short preferred_node; /* preferred */
19770b32	96	nodemask_t nodes; /* interleave/bind */
1da177e4 LT	97	/* undefined for default */
1da177e4 LT	98	} v;
f5b087b5 DR	99	union {
	100	nodemask_t cpuset_mems_allowed; /* relative to these nodes */
	101	nodemask_t user_nodemask; /* nodemask passed by user */
	102	} w;
1da177e4 LT	103	};
	104
	105	/*
	106	* Support for managing mempolicy data objects (clone, copy, destroy)
	107	* The default fast path of a NULL MPOL_DEFAULT policy is always inlined.
	108	*/
	109
f0be3d32 LS	110	extern void __mpol_put(struct mempolicy *pol);
f0be3d32 LS	111	static inline void mpol_put(struct mempolicy *pol)
1da177e4 LT	112	{
1da177e4 LT	113	if (pol)
f0be3d32	114	__mpol_put(pol);
1da177e4 LT	115	}
1da177e4 LT	116
52cd3b07 LS	117	/*
	118	* Does mempolicy pol need explicit unref after use?
	119	* Currently only needed for shared policies.
	120	*/
	121	static inline int mpol_needs_cond_ref(struct mempolicy *pol)
	122	{
	123	return (pol && (pol->flags & MPOL_F_SHARED));
	124	}
	125
	126	static inline void mpol_cond_put(struct mempolicy *pol)
	127	{
	128	if (mpol_needs_cond_ref(pol))
	129	__mpol_put(pol);
	130	}
	131
	132	extern struct mempolicy __mpol_cond_copy(struct mempolicy tompol,
	133	struct mempolicy *frompol);
	134	static inline struct mempolicy mpol_cond_copy(struct mempolicy tompol,
	135	struct mempolicy *frompol)
	136	{
	137	if (!frompol)
	138	return frompol;
	139	return __mpol_cond_copy(tompol, frompol);
	140	}
	141
846a16bf LS	142	extern struct mempolicy __mpol_dup(struct mempolicy pol);
846a16bf LS	143	static inline struct mempolicy mpol_dup(struct mempolicy pol)
1da177e4 LT	144	{
1da177e4 LT	145	if (pol)
846a16bf	146	pol = __mpol_dup(pol);
1da177e4 LT	147	return pol;
	148	}
	149
	150	#define vma_policy(vma) ((vma)->vm_policy)
	151	#define vma_set_policy(vma, pol) ((vma)->vm_policy = (pol))
	152
	153	static inline void mpol_get(struct mempolicy *pol)
	154	{
	155	if (pol)
	156	atomic_inc(&pol->refcnt);
	157	}
	158
	159	extern int __mpol_equal(struct mempolicy a, struct mempolicy b);
	160	static inline int mpol_equal(struct mempolicy a, struct mempolicy b)
	161	{
	162	if (a == b)
	163	return 1;
	164	return __mpol_equal(a, b);
	165	}
1da177e4	166
1da177e4 LT	167	/*
	168	* Tree of shared policies for a shared memory region.
	169	* Maintain the policies in a pseudo mm that contains vmas. The vmas
	170	* carry the policy. As a special twist the pseudo mm is indexed in pages, not
	171	* bytes, so that we can work with shared memory segments bigger than
	172	* unsigned long.
	173	*/
	174
	175	struct sp_node {
	176	struct rb_node nd;
	177	unsigned long start, end;
	178	struct mempolicy *policy;
	179	};
	180
	181	struct shared_policy {
	182	struct rb_root root;
	183	spinlock_t lock;
	184	};
	185
71fe804b	186	void mpol_shared_policy_init(struct shared_policy sp, struct mempolicy mpol);
1da177e4 LT	187	int mpol_set_shared_policy(struct shared_policy *info,
	188	struct vm_area_struct *vma,
	189	struct mempolicy *new);
	190	void mpol_free_shared_policy(struct shared_policy *p);
	191	struct mempolicy mpol_shared_policy_lookup(struct shared_policy sp,
	192	unsigned long idx);
	193
	194	extern void numa_default_policy(void);
	195	extern void numa_policy_init(void);
74cb2155 PJ	196	extern void mpol_rebind_task(struct task_struct *tsk,
74cb2155 PJ	197	const nodemask_t *new);
4225399a	198	extern void mpol_rebind_mm(struct mm_struct mm, nodemask_t new);
c61afb18	199	extern void mpol_fix_fork_child_flag(struct task_struct *p);
4225399a	200
5da7ca86	201	extern struct zonelist huge_zonelist(struct vm_area_struct vma,
19770b32 MG	202	unsigned long addr, gfp_t gfp_flags,
19770b32 MG	203	struct mempolicy mpol, nodemask_t nodemask);
dc85da15	204	extern unsigned slab_node(struct mempolicy *policy);
1da177e4	205
2f6726e5	206	extern enum zone_type policy_zone;
4be38e35	207
2f6726e5	208	static inline void check_highest_zone(enum zone_type k)
4be38e35	209	{
b377fd39	210	if (k > policy_zone && k != ZONE_MOVABLE)
4be38e35 CL	211	policy_zone = k;
	212	}
	213
39743889 CL	214	int do_migrate_pages(struct mm_struct *mm,
	215	const nodemask_t from_nodes, const nodemask_t to_nodes, int flags);
	216
095f1fc4 LS	217
095f1fc4 LS	218	#ifdef CONFIG_TMPFS
71fe804b	219	extern int mpol_parse_str(char str, struct mempolicy *mpol, int no_context);
095f1fc4	220
71fe804b LS	221	extern int mpol_to_str(char buffer, int maxlen, struct mempolicy pol,
71fe804b LS	222	int no_context);
095f1fc4	223	#endif
83d1674a GS	224
	225	/* Check if a vma is migratable */
	226	static inline int vma_migratable(struct vm_area_struct *vma)
	227	{
	228	if (vma->vm_flags & (VM_IO\|VM_HUGETLB\|VM_PFNMAP\|VM_RESERVED))
	229	return 0;
	230	/*
	231	* Migration allocates pages in the highest zone. If we cannot
	232	* do so then migration (at least from node to node) is not
	233	* possible.
	234	*/
	235	if (vma->vm_file &&
	236	gfp_zone(mapping_gfp_mask(vma->vm_file->f_mapping))
	237	< policy_zone)
	238	return 0;
	239	return 1;
	240	}
	241
1da177e4 LT	242	#else
	243
	244	struct mempolicy {};
	245
	246	static inline int mpol_equal(struct mempolicy a, struct mempolicy b)
	247	{
	248	return 1;
	249	}
1da177e4	250
f0be3d32	251	static inline void mpol_put(struct mempolicy *p)
1da177e4 LT	252	{
	253	}
	254
52cd3b07 LS	255	static inline void mpol_cond_put(struct mempolicy *pol)
	256	{
	257	}
	258
	259	static inline struct mempolicy mpol_cond_copy(struct mempolicy to,
	260	struct mempolicy *from)
	261	{
	262	return from;
	263	}
	264
1da177e4 LT	265	static inline void mpol_get(struct mempolicy *pol)
	266	{
	267	}
	268
846a16bf	269	static inline struct mempolicy mpol_dup(struct mempolicy old)
1da177e4 LT	270	{
	271	return NULL;
	272	}
	273
1da177e4 LT	274	struct shared_policy {};
	275
	276	static inline int mpol_set_shared_policy(struct shared_policy *info,
	277	struct vm_area_struct *vma,
	278	struct mempolicy *new)
	279	{
	280	return -EINVAL;
	281	}
	282
71fe804b LS	283	static inline void mpol_shared_policy_init(struct shared_policy *sp,
71fe804b LS	284	struct mempolicy *mpol)
1da177e4 LT	285	{
	286	}
	287
	288	static inline void mpol_free_shared_policy(struct shared_policy *p)
	289	{
	290	}
	291
	292	static inline struct mempolicy *
	293	mpol_shared_policy_lookup(struct shared_policy *sp, unsigned long idx)
	294	{
	295	return NULL;
	296	}
	297
	298	#define vma_policy(vma) NULL
	299	#define vma_set_policy(vma, pol) do {} while(0)
	300
	301	static inline void numa_policy_init(void)
	302	{
	303	}
	304
	305	static inline void numa_default_policy(void)
	306	{
	307	}
	308
74cb2155	309	static inline void mpol_rebind_task(struct task_struct *tsk,
68860ec1 PJ	310	const nodemask_t *new)
	311	{
	312	}
	313
4225399a PJ	314	static inline void mpol_rebind_mm(struct mm_struct mm, nodemask_t new)
	315	{
	316	}
	317
c61afb18 PJ	318	static inline void mpol_fix_fork_child_flag(struct task_struct *p)
	319	{
	320	}
	321
5da7ca86	322	static inline struct zonelist huge_zonelist(struct vm_area_struct vma,
19770b32 MG	323	unsigned long addr, gfp_t gfp_flags,
19770b32 MG	324	struct mempolicy mpol, nodemask_t nodemask)
5da7ca86	325	{
19770b32 MG	326	*mpol = NULL;
19770b32 MG	327	*nodemask = NULL;
0e88460d	328	return node_zonelist(0, gfp_flags);
5da7ca86 CL	329	}
5da7ca86 CL	330
45b07ef3 PJ	331	static inline int do_migrate_pages(struct mm_struct *mm,
	332	const nodemask_t *from_nodes,
	333	const nodemask_t *to_nodes, int flags)
	334	{
	335	return 0;
	336	}
	337
4be38e35 CL	338	static inline void check_highest_zone(int k)
	339	{
	340	}
095f1fc4 LS	341
095f1fc4 LS	342	#ifdef CONFIG_TMPFS
71fe804b LS	343	static inline int mpol_parse_str(char str, struct mempolicy *mpol,
71fe804b LS	344	int no_context)
095f1fc4	345	{
71fe804b	346	return 1; /* error */
095f1fc4 LS	347	}
095f1fc4 LS	348
71fe804b LS	349	static inline int mpol_to_str(char buffer, int maxlen, struct mempolicy pol,
71fe804b LS	350	int no_context)
095f1fc4 LS	351	{
	352	return 0;
	353	}
	354	#endif
	355
1da177e4 LT	356	#endif /* CONFIG_NUMA */
	357	#endif /* __KERNEL__ */
	358
	359	#endif