1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 #ifndef _LINUX_MEMBLOCK_H
3 #define _LINUX_MEMBLOCK_H
4 #ifdef __KERNEL__
5
6 /*
7 * Logical memory blocks.
8 *
9 * Copyright (C) 2001 Peter Bergner, IBM Corp.
10 */
11
12 #include <linux/init.h>
13 #include <linux/mm.h>
14 #include <asm/dma.h>
15
16 extern unsigned long max_low_pfn;
17 extern unsigned long min_low_pfn;
18
19 /*
20 * highest page
21 */
22 extern unsigned long max_pfn;
23 /*
24 * highest possible page
25 */
26 extern unsigned long long max_possible_pfn;
27
28 /**
29 * enum memblock_flags - definition of memory region attributes
30 * @MEMBLOCK_NONE: no special request
31 * @MEMBLOCK_HOTPLUG: hotpluggable region
32 * @MEMBLOCK_MIRROR: mirrored region
33 * @MEMBLOCK_NOMAP: don't add to kernel direct mapping
34 */
35 enum memblock_flags {
36 MEMBLOCK_NONE = 0x0, /* No special request */
37 MEMBLOCK_HOTPLUG = 0x1, /* hotpluggable region */
38 MEMBLOCK_MIRROR = 0x2, /* mirrored region */
39 MEMBLOCK_NOMAP = 0x4, /* don't add to kernel direct mapping */
40 };
41
42 /**
43 * struct memblock_region - represents a memory region
44 * @base: physical address of the region
45 * @size: size of the region
46 * @flags: memory region attributes
47 * @nid: NUMA node id
48 */
49 struct memblock_region {
50 phys_addr_t base;
51 phys_addr_t size;
52 enum memblock_flags flags;
53 #ifdef CONFIG_HAVE_MEMBLOCK_NODE_MAP
54 int nid;
55 #endif
56 };
57
58 /**
59 * struct memblock_type - collection of memory regions of certain type
60 * @cnt: number of regions
61 * @max: size of the allocated array
62 * @total_size: size of all regions
63 * @regions: array of regions
64 * @name: the memory type symbolic name
65 */
66 struct memblock_type {
67 unsigned long cnt;
68 unsigned long max;
69 phys_addr_t total_size;
70 struct memblock_region *regions;
71 char *name;
72 };
73
74 /**
75 * struct memblock - memblock allocator metadata
76 * @bottom_up: is bottom up direction?
77 * @current_limit: physical address of the current allocation limit
78 * @memory: usabe memory regions
79 * @reserved: reserved memory regions
80 * @physmem: all physical memory
81 */
82 struct memblock {
83 bool bottom_up; /* is bottom up direction? */
84 phys_addr_t current_limit;
85 struct memblock_type memory;
86 struct memblock_type reserved;
87 #ifdef CONFIG_HAVE_MEMBLOCK_PHYS_MAP
88 struct memblock_type physmem;
89 #endif
90 };
91
92 extern struct memblock memblock;
93 extern int memblock_debug;
94
95 #ifndef CONFIG_ARCH_KEEP_MEMBLOCK
96 #define __init_memblock __meminit
97 #define __initdata_memblock __meminitdata
98 void memblock_discard(void);
99 #else
100 #define __init_memblock
101 #define __initdata_memblock
memblock_discard(void)102 static inline void memblock_discard(void) {}
103 #endif
104
105 #define memblock_dbg(fmt, ...) \
106 if (memblock_debug) printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
107
108 phys_addr_t memblock_find_in_range(phys_addr_t start, phys_addr_t end,
109 phys_addr_t size, phys_addr_t align);
110 void memblock_allow_resize(void);
111 int memblock_add_node(phys_addr_t base, phys_addr_t size, int nid);
112 int memblock_add(phys_addr_t base, phys_addr_t size);
113 int memblock_remove(phys_addr_t base, phys_addr_t size);
114 int memblock_free(phys_addr_t base, phys_addr_t size);
115 int memblock_reserve(phys_addr_t base, phys_addr_t size);
116 void memblock_trim_memory(phys_addr_t align);
117 bool memblock_overlaps_region(struct memblock_type *type,
118 phys_addr_t base, phys_addr_t size);
119 int memblock_mark_hotplug(phys_addr_t base, phys_addr_t size);
120 int memblock_clear_hotplug(phys_addr_t base, phys_addr_t size);
121 int memblock_mark_mirror(phys_addr_t base, phys_addr_t size);
122 int memblock_mark_nomap(phys_addr_t base, phys_addr_t size);
123 int memblock_clear_nomap(phys_addr_t base, phys_addr_t size);
124
125 unsigned long memblock_free_all(void);
126 void reset_node_managed_pages(pg_data_t *pgdat);
127 void reset_all_zones_managed_pages(void);
128
129 /* Low level functions */
130 int memblock_add_range(struct memblock_type *type,
131 phys_addr_t base, phys_addr_t size,
132 int nid, enum memblock_flags flags);
133
134 void __next_mem_range(u64 *idx, int nid, enum memblock_flags flags,
135 struct memblock_type *type_a,
136 struct memblock_type *type_b, phys_addr_t *out_start,
137 phys_addr_t *out_end, int *out_nid);
138
139 void __next_mem_range_rev(u64 *idx, int nid, enum memblock_flags flags,
140 struct memblock_type *type_a,
141 struct memblock_type *type_b, phys_addr_t *out_start,
142 phys_addr_t *out_end, int *out_nid);
143
144 void __next_reserved_mem_region(u64 *idx, phys_addr_t *out_start,
145 phys_addr_t *out_end);
146
147 void __memblock_free_late(phys_addr_t base, phys_addr_t size);
148
149 /**
150 * for_each_mem_range - iterate through memblock areas from type_a and not
151 * included in type_b. Or just type_a if type_b is NULL.
152 * @i: u64 used as loop variable
153 * @type_a: ptr to memblock_type to iterate
154 * @type_b: ptr to memblock_type which excludes from the iteration
155 * @nid: node selector, %NUMA_NO_NODE for all nodes
156 * @flags: pick from blocks based on memory attributes
157 * @p_start: ptr to phys_addr_t for start address of the range, can be %NULL
158 * @p_end: ptr to phys_addr_t for end address of the range, can be %NULL
159 * @p_nid: ptr to int for nid of the range, can be %NULL
160 */
161 #define for_each_mem_range(i, type_a, type_b, nid, flags, \
162 p_start, p_end, p_nid) \
163 for (i = 0, __next_mem_range(&i, nid, flags, type_a, type_b, \
164 p_start, p_end, p_nid); \
165 i != (u64)ULLONG_MAX; \
166 __next_mem_range(&i, nid, flags, type_a, type_b, \
167 p_start, p_end, p_nid))
168
169 /**
170 * for_each_mem_range_rev - reverse iterate through memblock areas from
171 * type_a and not included in type_b. Or just type_a if type_b is NULL.
172 * @i: u64 used as loop variable
173 * @type_a: ptr to memblock_type to iterate
174 * @type_b: ptr to memblock_type which excludes from the iteration
175 * @nid: node selector, %NUMA_NO_NODE for all nodes
176 * @flags: pick from blocks based on memory attributes
177 * @p_start: ptr to phys_addr_t for start address of the range, can be %NULL
178 * @p_end: ptr to phys_addr_t for end address of the range, can be %NULL
179 * @p_nid: ptr to int for nid of the range, can be %NULL
180 */
181 #define for_each_mem_range_rev(i, type_a, type_b, nid, flags, \
182 p_start, p_end, p_nid) \
183 for (i = (u64)ULLONG_MAX, \
184 __next_mem_range_rev(&i, nid, flags, type_a, type_b,\
185 p_start, p_end, p_nid); \
186 i != (u64)ULLONG_MAX; \
187 __next_mem_range_rev(&i, nid, flags, type_a, type_b, \
188 p_start, p_end, p_nid))
189
190 /**
191 * for_each_reserved_mem_region - iterate over all reserved memblock areas
192 * @i: u64 used as loop variable
193 * @p_start: ptr to phys_addr_t for start address of the range, can be %NULL
194 * @p_end: ptr to phys_addr_t for end address of the range, can be %NULL
195 *
196 * Walks over reserved areas of memblock. Available as soon as memblock
197 * is initialized.
198 */
199 #define for_each_reserved_mem_region(i, p_start, p_end) \
200 for (i = 0UL, __next_reserved_mem_region(&i, p_start, p_end); \
201 i != (u64)ULLONG_MAX; \
202 __next_reserved_mem_region(&i, p_start, p_end))
203
memblock_is_hotpluggable(struct memblock_region * m)204 static inline bool memblock_is_hotpluggable(struct memblock_region *m)
205 {
206 return m->flags & MEMBLOCK_HOTPLUG;
207 }
208
memblock_is_mirror(struct memblock_region * m)209 static inline bool memblock_is_mirror(struct memblock_region *m)
210 {
211 return m->flags & MEMBLOCK_MIRROR;
212 }
213
memblock_is_nomap(struct memblock_region * m)214 static inline bool memblock_is_nomap(struct memblock_region *m)
215 {
216 return m->flags & MEMBLOCK_NOMAP;
217 }
218
219 #ifdef CONFIG_HAVE_MEMBLOCK_NODE_MAP
220 int memblock_search_pfn_nid(unsigned long pfn, unsigned long *start_pfn,
221 unsigned long *end_pfn);
222 void __next_mem_pfn_range(int *idx, int nid, unsigned long *out_start_pfn,
223 unsigned long *out_end_pfn, int *out_nid);
224
225 /**
226 * for_each_mem_pfn_range - early memory pfn range iterator
227 * @i: an integer used as loop variable
228 * @nid: node selector, %MAX_NUMNODES for all nodes
229 * @p_start: ptr to ulong for start pfn of the range, can be %NULL
230 * @p_end: ptr to ulong for end pfn of the range, can be %NULL
231 * @p_nid: ptr to int for nid of the range, can be %NULL
232 *
233 * Walks over configured memory ranges.
234 */
235 #define for_each_mem_pfn_range(i, nid, p_start, p_end, p_nid) \
236 for (i = -1, __next_mem_pfn_range(&i, nid, p_start, p_end, p_nid); \
237 i >= 0; __next_mem_pfn_range(&i, nid, p_start, p_end, p_nid))
238 #endif /* CONFIG_HAVE_MEMBLOCK_NODE_MAP */
239
240 #ifdef CONFIG_DEFERRED_STRUCT_PAGE_INIT
241 void __next_mem_pfn_range_in_zone(u64 *idx, struct zone *zone,
242 unsigned long *out_spfn,
243 unsigned long *out_epfn);
244 /**
245 * for_each_free_mem_range_in_zone - iterate through zone specific free
246 * memblock areas
247 * @i: u64 used as loop variable
248 * @zone: zone in which all of the memory blocks reside
249 * @p_start: ptr to phys_addr_t for start address of the range, can be %NULL
250 * @p_end: ptr to phys_addr_t for end address of the range, can be %NULL
251 *
252 * Walks over free (memory && !reserved) areas of memblock in a specific
253 * zone. Available once memblock and an empty zone is initialized. The main
254 * assumption is that the zone start, end, and pgdat have been associated.
255 * This way we can use the zone to determine NUMA node, and if a given part
256 * of the memblock is valid for the zone.
257 */
258 #define for_each_free_mem_pfn_range_in_zone(i, zone, p_start, p_end) \
259 for (i = 0, \
260 __next_mem_pfn_range_in_zone(&i, zone, p_start, p_end); \
261 i != U64_MAX; \
262 __next_mem_pfn_range_in_zone(&i, zone, p_start, p_end))
263
264 /**
265 * for_each_free_mem_range_in_zone_from - iterate through zone specific
266 * free memblock areas from a given point
267 * @i: u64 used as loop variable
268 * @zone: zone in which all of the memory blocks reside
269 * @p_start: ptr to phys_addr_t for start address of the range, can be %NULL
270 * @p_end: ptr to phys_addr_t for end address of the range, can be %NULL
271 *
272 * Walks over free (memory && !reserved) areas of memblock in a specific
273 * zone, continuing from current position. Available as soon as memblock is
274 * initialized.
275 */
276 #define for_each_free_mem_pfn_range_in_zone_from(i, zone, p_start, p_end) \
277 for (; i != U64_MAX; \
278 __next_mem_pfn_range_in_zone(&i, zone, p_start, p_end))
279 #endif /* CONFIG_DEFERRED_STRUCT_PAGE_INIT */
280
281 /**
282 * for_each_free_mem_range - iterate through free memblock areas
283 * @i: u64 used as loop variable
284 * @nid: node selector, %NUMA_NO_NODE for all nodes
285 * @flags: pick from blocks based on memory attributes
286 * @p_start: ptr to phys_addr_t for start address of the range, can be %NULL
287 * @p_end: ptr to phys_addr_t for end address of the range, can be %NULL
288 * @p_nid: ptr to int for nid of the range, can be %NULL
289 *
290 * Walks over free (memory && !reserved) areas of memblock. Available as
291 * soon as memblock is initialized.
292 */
293 #define for_each_free_mem_range(i, nid, flags, p_start, p_end, p_nid) \
294 for_each_mem_range(i, &memblock.memory, &memblock.reserved, \
295 nid, flags, p_start, p_end, p_nid)
296
297 /**
298 * for_each_free_mem_range_reverse - rev-iterate through free memblock areas
299 * @i: u64 used as loop variable
300 * @nid: node selector, %NUMA_NO_NODE for all nodes
301 * @flags: pick from blocks based on memory attributes
302 * @p_start: ptr to phys_addr_t for start address of the range, can be %NULL
303 * @p_end: ptr to phys_addr_t for end address of the range, can be %NULL
304 * @p_nid: ptr to int for nid of the range, can be %NULL
305 *
306 * Walks over free (memory && !reserved) areas of memblock in reverse
307 * order. Available as soon as memblock is initialized.
308 */
309 #define for_each_free_mem_range_reverse(i, nid, flags, p_start, p_end, \
310 p_nid) \
311 for_each_mem_range_rev(i, &memblock.memory, &memblock.reserved, \
312 nid, flags, p_start, p_end, p_nid)
313
314 #ifdef CONFIG_HAVE_MEMBLOCK_NODE_MAP
315 int memblock_set_node(phys_addr_t base, phys_addr_t size,
316 struct memblock_type *type, int nid);
317
memblock_set_region_node(struct memblock_region * r,int nid)318 static inline void memblock_set_region_node(struct memblock_region *r, int nid)
319 {
320 r->nid = nid;
321 }
322
memblock_get_region_node(const struct memblock_region * r)323 static inline int memblock_get_region_node(const struct memblock_region *r)
324 {
325 return r->nid;
326 }
327 #else
memblock_set_region_node(struct memblock_region * r,int nid)328 static inline void memblock_set_region_node(struct memblock_region *r, int nid)
329 {
330 }
331
memblock_get_region_node(const struct memblock_region * r)332 static inline int memblock_get_region_node(const struct memblock_region *r)
333 {
334 return 0;
335 }
336 #endif /* CONFIG_HAVE_MEMBLOCK_NODE_MAP */
337
338 /* Flags for memblock allocation APIs */
339 #define MEMBLOCK_ALLOC_ANYWHERE (~(phys_addr_t)0)
340 #define MEMBLOCK_ALLOC_ACCESSIBLE 0
341 #define MEMBLOCK_ALLOC_KASAN 1
342
343 /* We are using top down, so it is safe to use 0 here */
344 #define MEMBLOCK_LOW_LIMIT 0
345
346 #ifndef ARCH_LOW_ADDRESS_LIMIT
347 #define ARCH_LOW_ADDRESS_LIMIT 0xffffffffUL
348 #endif
349
350 phys_addr_t memblock_phys_alloc_range(phys_addr_t size, phys_addr_t align,
351 phys_addr_t start, phys_addr_t end);
352 phys_addr_t memblock_phys_alloc_try_nid(phys_addr_t size, phys_addr_t align, int nid);
353
memblock_phys_alloc(phys_addr_t size,phys_addr_t align)354 static inline phys_addr_t memblock_phys_alloc(phys_addr_t size,
355 phys_addr_t align)
356 {
357 return memblock_phys_alloc_range(size, align, 0,
358 MEMBLOCK_ALLOC_ACCESSIBLE);
359 }
360
361 void *memblock_alloc_try_nid_raw(phys_addr_t size, phys_addr_t align,
362 phys_addr_t min_addr, phys_addr_t max_addr,
363 int nid);
364 void *memblock_alloc_try_nid(phys_addr_t size, phys_addr_t align,
365 phys_addr_t min_addr, phys_addr_t max_addr,
366 int nid);
367
memblock_alloc(phys_addr_t size,phys_addr_t align)368 static inline void * __init memblock_alloc(phys_addr_t size, phys_addr_t align)
369 {
370 return memblock_alloc_try_nid(size, align, MEMBLOCK_LOW_LIMIT,
371 MEMBLOCK_ALLOC_ACCESSIBLE, NUMA_NO_NODE);
372 }
373
memblock_alloc_raw(phys_addr_t size,phys_addr_t align)374 static inline void * __init memblock_alloc_raw(phys_addr_t size,
375 phys_addr_t align)
376 {
377 return memblock_alloc_try_nid_raw(size, align, MEMBLOCK_LOW_LIMIT,
378 MEMBLOCK_ALLOC_ACCESSIBLE,
379 NUMA_NO_NODE);
380 }
381
memblock_alloc_from(phys_addr_t size,phys_addr_t align,phys_addr_t min_addr)382 static inline void * __init memblock_alloc_from(phys_addr_t size,
383 phys_addr_t align,
384 phys_addr_t min_addr)
385 {
386 return memblock_alloc_try_nid(size, align, min_addr,
387 MEMBLOCK_ALLOC_ACCESSIBLE, NUMA_NO_NODE);
388 }
389
memblock_alloc_low(phys_addr_t size,phys_addr_t align)390 static inline void * __init memblock_alloc_low(phys_addr_t size,
391 phys_addr_t align)
392 {
393 return memblock_alloc_try_nid(size, align, MEMBLOCK_LOW_LIMIT,
394 ARCH_LOW_ADDRESS_LIMIT, NUMA_NO_NODE);
395 }
396
memblock_alloc_node(phys_addr_t size,phys_addr_t align,int nid)397 static inline void * __init memblock_alloc_node(phys_addr_t size,
398 phys_addr_t align, int nid)
399 {
400 return memblock_alloc_try_nid(size, align, MEMBLOCK_LOW_LIMIT,
401 MEMBLOCK_ALLOC_ACCESSIBLE, nid);
402 }
403
memblock_free_early(phys_addr_t base,phys_addr_t size)404 static inline void __init memblock_free_early(phys_addr_t base,
405 phys_addr_t size)
406 {
407 memblock_free(base, size);
408 }
409
memblock_free_early_nid(phys_addr_t base,phys_addr_t size,int nid)410 static inline void __init memblock_free_early_nid(phys_addr_t base,
411 phys_addr_t size, int nid)
412 {
413 memblock_free(base, size);
414 }
415
memblock_free_late(phys_addr_t base,phys_addr_t size)416 static inline void __init memblock_free_late(phys_addr_t base, phys_addr_t size)
417 {
418 __memblock_free_late(base, size);
419 }
420
421 /*
422 * Set the allocation direction to bottom-up or top-down.
423 */
memblock_set_bottom_up(bool enable)424 static inline void __init memblock_set_bottom_up(bool enable)
425 {
426 memblock.bottom_up = enable;
427 }
428
429 /*
430 * Check if the allocation direction is bottom-up or not.
431 * if this is true, that said, memblock will allocate memory
432 * in bottom-up direction.
433 */
memblock_bottom_up(void)434 static inline bool memblock_bottom_up(void)
435 {
436 return memblock.bottom_up;
437 }
438
439 phys_addr_t memblock_phys_mem_size(void);
440 phys_addr_t memblock_reserved_size(void);
441 phys_addr_t memblock_mem_size(unsigned long limit_pfn);
442 phys_addr_t memblock_start_of_DRAM(void);
443 phys_addr_t memblock_end_of_DRAM(void);
444 void memblock_enforce_memory_limit(phys_addr_t memory_limit);
445 void memblock_cap_memory_range(phys_addr_t base, phys_addr_t size);
446 void memblock_mem_limit_remove_map(phys_addr_t limit);
447 bool memblock_is_memory(phys_addr_t addr);
448 bool memblock_is_map_memory(phys_addr_t addr);
449 bool memblock_is_region_memory(phys_addr_t base, phys_addr_t size);
450 bool memblock_is_reserved(phys_addr_t addr);
451 bool memblock_is_region_reserved(phys_addr_t base, phys_addr_t size);
452
453 extern void __memblock_dump_all(void);
454
memblock_dump_all(void)455 static inline void memblock_dump_all(void)
456 {
457 if (memblock_debug)
458 __memblock_dump_all();
459 }
460
461 /**
462 * memblock_set_current_limit - Set the current allocation limit to allow
463 * limiting allocations to what is currently
464 * accessible during boot
465 * @limit: New limit value (physical address)
466 */
467 void memblock_set_current_limit(phys_addr_t limit);
468
469
470 phys_addr_t memblock_get_current_limit(void);
471
472 /*
473 * pfn conversion functions
474 *
475 * While the memory MEMBLOCKs should always be page aligned, the reserved
476 * MEMBLOCKs may not be. This accessor attempt to provide a very clear
477 * idea of what they return for such non aligned MEMBLOCKs.
478 */
479
480 /**
481 * memblock_region_memory_base_pfn - get the lowest pfn of the memory region
482 * @reg: memblock_region structure
483 *
484 * Return: the lowest pfn intersecting with the memory region
485 */
memblock_region_memory_base_pfn(const struct memblock_region * reg)486 static inline unsigned long memblock_region_memory_base_pfn(const struct memblock_region *reg)
487 {
488 return PFN_UP(reg->base);
489 }
490
491 /**
492 * memblock_region_memory_end_pfn - get the end pfn of the memory region
493 * @reg: memblock_region structure
494 *
495 * Return: the end_pfn of the reserved region
496 */
memblock_region_memory_end_pfn(const struct memblock_region * reg)497 static inline unsigned long memblock_region_memory_end_pfn(const struct memblock_region *reg)
498 {
499 return PFN_DOWN(reg->base + reg->size);
500 }
501
502 /**
503 * memblock_region_reserved_base_pfn - get the lowest pfn of the reserved region
504 * @reg: memblock_region structure
505 *
506 * Return: the lowest pfn intersecting with the reserved region
507 */
memblock_region_reserved_base_pfn(const struct memblock_region * reg)508 static inline unsigned long memblock_region_reserved_base_pfn(const struct memblock_region *reg)
509 {
510 return PFN_DOWN(reg->base);
511 }
512
513 /**
514 * memblock_region_reserved_end_pfn - get the end pfn of the reserved region
515 * @reg: memblock_region structure
516 *
517 * Return: the end_pfn of the reserved region
518 */
memblock_region_reserved_end_pfn(const struct memblock_region * reg)519 static inline unsigned long memblock_region_reserved_end_pfn(const struct memblock_region *reg)
520 {
521 return PFN_UP(reg->base + reg->size);
522 }
523
524 #define for_each_memblock(memblock_type, region) \
525 for (region = memblock.memblock_type.regions; \
526 region < (memblock.memblock_type.regions + memblock.memblock_type.cnt); \
527 region++)
528
529 #define for_each_memblock_type(i, memblock_type, rgn) \
530 for (i = 0, rgn = &memblock_type->regions[0]; \
531 i < memblock_type->cnt; \
532 i++, rgn = &memblock_type->regions[i])
533
534 extern void *alloc_large_system_hash(const char *tablename,
535 unsigned long bucketsize,
536 unsigned long numentries,
537 int scale,
538 int flags,
539 unsigned int *_hash_shift,
540 unsigned int *_hash_mask,
541 unsigned long low_limit,
542 unsigned long high_limit);
543
544 #define HASH_EARLY 0x00000001 /* Allocating during early boot? */
545 #define HASH_SMALL 0x00000002 /* sub-page allocation allowed, min
546 * shift passed via *_hash_shift */
547 #define HASH_ZERO 0x00000004 /* Zero allocated hash table */
548
549 /* Only NUMA needs hash distribution. 64bit NUMA architectures have
550 * sufficient vmalloc space.
551 */
552 #ifdef CONFIG_NUMA
553 #define HASHDIST_DEFAULT IS_ENABLED(CONFIG_64BIT)
554 extern int hashdist; /* Distribute hashes across NUMA nodes? */
555 #else
556 #define hashdist (0)
557 #endif
558
559 #ifdef CONFIG_MEMTEST
560 extern void early_memtest(phys_addr_t start, phys_addr_t end);
561 #else
early_memtest(phys_addr_t start,phys_addr_t end)562 static inline void early_memtest(phys_addr_t start, phys_addr_t end)
563 {
564 }
565 #endif
566
567 #endif /* __KERNEL__ */
568
569 #endif /* _LINUX_MEMBLOCK_H */
570
