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95f72d1e YL |
1 | #ifndef _LINUX_MEMBLOCK_H |
2 | #define _LINUX_MEMBLOCK_H | |
3 | #ifdef __KERNEL__ | |
4 | ||
f0b37fad | 5 | #ifdef CONFIG_HAVE_MEMBLOCK |
95f72d1e YL |
6 | /* |
7 | * Logical memory blocks. | |
8 | * | |
9 | * Copyright (C) 2001 Peter Bergner, IBM Corp. | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or | |
12 | * modify it under the terms of the GNU General Public License | |
13 | * as published by the Free Software Foundation; either version | |
14 | * 2 of the License, or (at your option) any later version. | |
15 | */ | |
16 | ||
17 | #include <linux/init.h> | |
18 | #include <linux/mm.h> | |
19 | ||
37d8d4bf | 20 | #define INIT_MEMBLOCK_REGIONS 128 |
70210ed9 | 21 | #define INIT_PHYSMEM_REGIONS 4 |
95f72d1e | 22 | |
66b16edf | 23 | /* Definition of memblock flags. */ |
fc6daaf9 TL |
24 | enum { |
25 | MEMBLOCK_NONE = 0x0, /* No special request */ | |
26 | MEMBLOCK_HOTPLUG = 0x1, /* hotpluggable region */ | |
a3f5bafc | 27 | MEMBLOCK_MIRROR = 0x2, /* mirrored region */ |
bf3d3cc5 | 28 | MEMBLOCK_NOMAP = 0x4, /* don't add to kernel direct mapping */ |
fc6daaf9 | 29 | }; |
66b16edf | 30 | |
e3239ff9 | 31 | struct memblock_region { |
2898cc4c BH |
32 | phys_addr_t base; |
33 | phys_addr_t size; | |
66a20757 | 34 | unsigned long flags; |
7c0caeb8 TH |
35 | #ifdef CONFIG_HAVE_MEMBLOCK_NODE_MAP |
36 | int nid; | |
37 | #endif | |
95f72d1e YL |
38 | }; |
39 | ||
e3239ff9 | 40 | struct memblock_type { |
bf23c51f BH |
41 | unsigned long cnt; /* number of regions */ |
42 | unsigned long max; /* size of the allocated array */ | |
1440c4e2 | 43 | phys_addr_t total_size; /* size of all regions */ |
bf23c51f | 44 | struct memblock_region *regions; |
0262d9c8 | 45 | char *name; |
95f72d1e YL |
46 | }; |
47 | ||
48 | struct memblock { | |
79442ed1 | 49 | bool bottom_up; /* is bottom up direction? */ |
2898cc4c | 50 | phys_addr_t current_limit; |
e3239ff9 BH |
51 | struct memblock_type memory; |
52 | struct memblock_type reserved; | |
70210ed9 PH |
53 | #ifdef CONFIG_HAVE_MEMBLOCK_PHYS_MAP |
54 | struct memblock_type physmem; | |
55 | #endif | |
95f72d1e YL |
56 | }; |
57 | ||
58 | extern struct memblock memblock; | |
5e63cf43 | 59 | extern int memblock_debug; |
5e63cf43 | 60 | |
036fbb21 KS |
61 | #ifdef CONFIG_ARCH_DISCARD_MEMBLOCK |
62 | #define __init_memblock __meminit | |
63 | #define __initdata_memblock __meminitdata | |
3010f876 | 64 | void memblock_discard(void); |
036fbb21 KS |
65 | #else |
66 | #define __init_memblock | |
67 | #define __initdata_memblock | |
68 | #endif | |
69 | ||
5e63cf43 YL |
70 | #define memblock_dbg(fmt, ...) \ |
71 | if (memblock_debug) printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__) | |
95f72d1e | 72 | |
87029ee9 | 73 | phys_addr_t memblock_find_in_range_node(phys_addr_t size, phys_addr_t align, |
ba6c19fd CG |
74 | phys_addr_t start, phys_addr_t end, |
75 | int nid, ulong flags); | |
fc769a8e TH |
76 | phys_addr_t memblock_find_in_range(phys_addr_t start, phys_addr_t end, |
77 | phys_addr_t size, phys_addr_t align); | |
1aadc056 | 78 | void memblock_allow_resize(void); |
7fb0bc3f | 79 | int memblock_add_node(phys_addr_t base, phys_addr_t size, int nid); |
581adcbe TH |
80 | int memblock_add(phys_addr_t base, phys_addr_t size); |
81 | int memblock_remove(phys_addr_t base, phys_addr_t size); | |
82 | int memblock_free(phys_addr_t base, phys_addr_t size); | |
83 | int memblock_reserve(phys_addr_t base, phys_addr_t size); | |
6ede1fd3 | 84 | void memblock_trim_memory(phys_addr_t align); |
95cf82ec TC |
85 | bool memblock_overlaps_region(struct memblock_type *type, |
86 | phys_addr_t base, phys_addr_t size); | |
66b16edf TC |
87 | int memblock_mark_hotplug(phys_addr_t base, phys_addr_t size); |
88 | int memblock_clear_hotplug(phys_addr_t base, phys_addr_t size); | |
a3f5bafc | 89 | int memblock_mark_mirror(phys_addr_t base, phys_addr_t size); |
bf3d3cc5 | 90 | int memblock_mark_nomap(phys_addr_t base, phys_addr_t size); |
4c546b8a | 91 | int memblock_clear_nomap(phys_addr_t base, phys_addr_t size); |
a3f5bafc | 92 | ulong choose_memblock_flags(void); |
f1af9d3a PH |
93 | |
94 | /* Low level functions */ | |
95 | int memblock_add_range(struct memblock_type *type, | |
96 | phys_addr_t base, phys_addr_t size, | |
97 | int nid, unsigned long flags); | |
98 | ||
fc6daaf9 TL |
99 | void __next_mem_range(u64 *idx, int nid, ulong flags, |
100 | struct memblock_type *type_a, | |
f1af9d3a PH |
101 | struct memblock_type *type_b, phys_addr_t *out_start, |
102 | phys_addr_t *out_end, int *out_nid); | |
103 | ||
fc6daaf9 TL |
104 | void __next_mem_range_rev(u64 *idx, int nid, ulong flags, |
105 | struct memblock_type *type_a, | |
f1af9d3a PH |
106 | struct memblock_type *type_b, phys_addr_t *out_start, |
107 | phys_addr_t *out_end, int *out_nid); | |
108 | ||
8e7a7f86 | 109 | void __next_reserved_mem_region(u64 *idx, phys_addr_t *out_start, |
ba6c19fd | 110 | phys_addr_t *out_end); |
8e7a7f86 | 111 | |
3010f876 PT |
112 | void __memblock_free_early(phys_addr_t base, phys_addr_t size); |
113 | void __memblock_free_late(phys_addr_t base, phys_addr_t size); | |
114 | ||
f1af9d3a PH |
115 | /** |
116 | * for_each_mem_range - iterate through memblock areas from type_a and not | |
117 | * included in type_b. Or just type_a if type_b is NULL. | |
118 | * @i: u64 used as loop variable | |
119 | * @type_a: ptr to memblock_type to iterate | |
120 | * @type_b: ptr to memblock_type which excludes from the iteration | |
121 | * @nid: node selector, %NUMA_NO_NODE for all nodes | |
fc6daaf9 | 122 | * @flags: pick from blocks based on memory attributes |
f1af9d3a PH |
123 | * @p_start: ptr to phys_addr_t for start address of the range, can be %NULL |
124 | * @p_end: ptr to phys_addr_t for end address of the range, can be %NULL | |
125 | * @p_nid: ptr to int for nid of the range, can be %NULL | |
126 | */ | |
fc6daaf9 | 127 | #define for_each_mem_range(i, type_a, type_b, nid, flags, \ |
f1af9d3a | 128 | p_start, p_end, p_nid) \ |
fc6daaf9 | 129 | for (i = 0, __next_mem_range(&i, nid, flags, type_a, type_b, \ |
f1af9d3a PH |
130 | p_start, p_end, p_nid); \ |
131 | i != (u64)ULLONG_MAX; \ | |
fc6daaf9 | 132 | __next_mem_range(&i, nid, flags, type_a, type_b, \ |
f1af9d3a PH |
133 | p_start, p_end, p_nid)) |
134 | ||
135 | /** | |
136 | * for_each_mem_range_rev - reverse iterate through memblock areas from | |
137 | * type_a and not included in type_b. Or just type_a if type_b is NULL. | |
138 | * @i: u64 used as loop variable | |
139 | * @type_a: ptr to memblock_type to iterate | |
140 | * @type_b: ptr to memblock_type which excludes from the iteration | |
141 | * @nid: node selector, %NUMA_NO_NODE for all nodes | |
fc6daaf9 | 142 | * @flags: pick from blocks based on memory attributes |
f1af9d3a PH |
143 | * @p_start: ptr to phys_addr_t for start address of the range, can be %NULL |
144 | * @p_end: ptr to phys_addr_t for end address of the range, can be %NULL | |
145 | * @p_nid: ptr to int for nid of the range, can be %NULL | |
146 | */ | |
fc6daaf9 | 147 | #define for_each_mem_range_rev(i, type_a, type_b, nid, flags, \ |
f1af9d3a PH |
148 | p_start, p_end, p_nid) \ |
149 | for (i = (u64)ULLONG_MAX, \ | |
fc6daaf9 | 150 | __next_mem_range_rev(&i, nid, flags, type_a, type_b,\ |
ba6c19fd | 151 | p_start, p_end, p_nid); \ |
f1af9d3a | 152 | i != (u64)ULLONG_MAX; \ |
fc6daaf9 | 153 | __next_mem_range_rev(&i, nid, flags, type_a, type_b, \ |
f1af9d3a PH |
154 | p_start, p_end, p_nid)) |
155 | ||
8e7a7f86 RH |
156 | /** |
157 | * for_each_reserved_mem_region - iterate over all reserved memblock areas | |
158 | * @i: u64 used as loop variable | |
159 | * @p_start: ptr to phys_addr_t for start address of the range, can be %NULL | |
160 | * @p_end: ptr to phys_addr_t for end address of the range, can be %NULL | |
161 | * | |
162 | * Walks over reserved areas of memblock. Available as soon as memblock | |
163 | * is initialized. | |
164 | */ | |
165 | #define for_each_reserved_mem_region(i, p_start, p_end) \ | |
ba6c19fd | 166 | for (i = 0UL, __next_reserved_mem_region(&i, p_start, p_end); \ |
8e7a7f86 RH |
167 | i != (u64)ULLONG_MAX; \ |
168 | __next_reserved_mem_region(&i, p_start, p_end)) | |
169 | ||
55ac590c TC |
170 | static inline bool memblock_is_hotpluggable(struct memblock_region *m) |
171 | { | |
172 | return m->flags & MEMBLOCK_HOTPLUG; | |
173 | } | |
174 | ||
a3f5bafc TL |
175 | static inline bool memblock_is_mirror(struct memblock_region *m) |
176 | { | |
177 | return m->flags & MEMBLOCK_MIRROR; | |
178 | } | |
179 | ||
bf3d3cc5 AB |
180 | static inline bool memblock_is_nomap(struct memblock_region *m) |
181 | { | |
182 | return m->flags & MEMBLOCK_NOMAP; | |
183 | } | |
184 | ||
0ee332c1 | 185 | #ifdef CONFIG_HAVE_MEMBLOCK_NODE_MAP |
e76b63f8 YL |
186 | int memblock_search_pfn_nid(unsigned long pfn, unsigned long *start_pfn, |
187 | unsigned long *end_pfn); | |
0ee332c1 TH |
188 | void __next_mem_pfn_range(int *idx, int nid, unsigned long *out_start_pfn, |
189 | unsigned long *out_end_pfn, int *out_nid); | |
190 | ||
191 | /** | |
192 | * for_each_mem_pfn_range - early memory pfn range iterator | |
193 | * @i: an integer used as loop variable | |
194 | * @nid: node selector, %MAX_NUMNODES for all nodes | |
195 | * @p_start: ptr to ulong for start pfn of the range, can be %NULL | |
196 | * @p_end: ptr to ulong for end pfn of the range, can be %NULL | |
197 | * @p_nid: ptr to int for nid of the range, can be %NULL | |
198 | * | |
f2d52fe5 | 199 | * Walks over configured memory ranges. |
0ee332c1 TH |
200 | */ |
201 | #define for_each_mem_pfn_range(i, nid, p_start, p_end, p_nid) \ | |
202 | for (i = -1, __next_mem_pfn_range(&i, nid, p_start, p_end, p_nid); \ | |
203 | i >= 0; __next_mem_pfn_range(&i, nid, p_start, p_end, p_nid)) | |
204 | #endif /* CONFIG_HAVE_MEMBLOCK_NODE_MAP */ | |
205 | ||
35fd0808 TH |
206 | /** |
207 | * for_each_free_mem_range - iterate through free memblock areas | |
208 | * @i: u64 used as loop variable | |
b1154233 | 209 | * @nid: node selector, %NUMA_NO_NODE for all nodes |
d30b5545 | 210 | * @flags: pick from blocks based on memory attributes |
35fd0808 TH |
211 | * @p_start: ptr to phys_addr_t for start address of the range, can be %NULL |
212 | * @p_end: ptr to phys_addr_t for end address of the range, can be %NULL | |
213 | * @p_nid: ptr to int for nid of the range, can be %NULL | |
214 | * | |
215 | * Walks over free (memory && !reserved) areas of memblock. Available as | |
216 | * soon as memblock is initialized. | |
217 | */ | |
fc6daaf9 | 218 | #define for_each_free_mem_range(i, nid, flags, p_start, p_end, p_nid) \ |
f1af9d3a | 219 | for_each_mem_range(i, &memblock.memory, &memblock.reserved, \ |
fc6daaf9 | 220 | nid, flags, p_start, p_end, p_nid) |
7bd0b0f0 TH |
221 | |
222 | /** | |
223 | * for_each_free_mem_range_reverse - rev-iterate through free memblock areas | |
224 | * @i: u64 used as loop variable | |
b1154233 | 225 | * @nid: node selector, %NUMA_NO_NODE for all nodes |
d30b5545 | 226 | * @flags: pick from blocks based on memory attributes |
7bd0b0f0 TH |
227 | * @p_start: ptr to phys_addr_t for start address of the range, can be %NULL |
228 | * @p_end: ptr to phys_addr_t for end address of the range, can be %NULL | |
229 | * @p_nid: ptr to int for nid of the range, can be %NULL | |
230 | * | |
231 | * Walks over free (memory && !reserved) areas of memblock in reverse | |
232 | * order. Available as soon as memblock is initialized. | |
233 | */ | |
fc6daaf9 TL |
234 | #define for_each_free_mem_range_reverse(i, nid, flags, p_start, p_end, \ |
235 | p_nid) \ | |
f1af9d3a | 236 | for_each_mem_range_rev(i, &memblock.memory, &memblock.reserved, \ |
fc6daaf9 | 237 | nid, flags, p_start, p_end, p_nid) |
7bd0b0f0 | 238 | |
a4a3ede2 PT |
239 | /** |
240 | * for_each_resv_unavail_range - iterate through reserved and unavailable memory | |
241 | * @i: u64 used as loop variable | |
242 | * @flags: pick from blocks based on memory attributes | |
243 | * @p_start: ptr to phys_addr_t for start address of the range, can be %NULL | |
244 | * @p_end: ptr to phys_addr_t for end address of the range, can be %NULL | |
245 | * | |
246 | * Walks over unavailable but reserved (reserved && !memory) areas of memblock. | |
247 | * Available as soon as memblock is initialized. | |
248 | * Note: because this memory does not belong to any physical node, flags and | |
249 | * nid arguments do not make sense and thus not exported as arguments. | |
250 | */ | |
251 | #define for_each_resv_unavail_range(i, p_start, p_end) \ | |
252 | for_each_mem_range(i, &memblock.reserved, &memblock.memory, \ | |
253 | NUMA_NO_NODE, MEMBLOCK_NONE, p_start, p_end, NULL) | |
254 | ||
66b16edf TC |
255 | static inline void memblock_set_region_flags(struct memblock_region *r, |
256 | unsigned long flags) | |
257 | { | |
258 | r->flags |= flags; | |
259 | } | |
260 | ||
261 | static inline void memblock_clear_region_flags(struct memblock_region *r, | |
262 | unsigned long flags) | |
263 | { | |
264 | r->flags &= ~flags; | |
265 | } | |
266 | ||
7c0caeb8 | 267 | #ifdef CONFIG_HAVE_MEMBLOCK_NODE_MAP |
e7e8de59 TC |
268 | int memblock_set_node(phys_addr_t base, phys_addr_t size, |
269 | struct memblock_type *type, int nid); | |
7c0caeb8 TH |
270 | |
271 | static inline void memblock_set_region_node(struct memblock_region *r, int nid) | |
272 | { | |
273 | r->nid = nid; | |
274 | } | |
275 | ||
276 | static inline int memblock_get_region_node(const struct memblock_region *r) | |
277 | { | |
278 | return r->nid; | |
279 | } | |
280 | #else | |
281 | static inline void memblock_set_region_node(struct memblock_region *r, int nid) | |
282 | { | |
283 | } | |
284 | ||
285 | static inline int memblock_get_region_node(const struct memblock_region *r) | |
286 | { | |
287 | return 0; | |
288 | } | |
289 | #endif /* CONFIG_HAVE_MEMBLOCK_NODE_MAP */ | |
290 | ||
581adcbe TH |
291 | phys_addr_t memblock_alloc_nid(phys_addr_t size, phys_addr_t align, int nid); |
292 | phys_addr_t memblock_alloc_try_nid(phys_addr_t size, phys_addr_t align, int nid); | |
9d1e2492 | 293 | |
581adcbe | 294 | phys_addr_t memblock_alloc(phys_addr_t size, phys_addr_t align); |
e63075a3 | 295 | |
79442ed1 TC |
296 | /* |
297 | * Set the allocation direction to bottom-up or top-down. | |
298 | */ | |
2cfb3665 | 299 | static inline void __init memblock_set_bottom_up(bool enable) |
79442ed1 TC |
300 | { |
301 | memblock.bottom_up = enable; | |
302 | } | |
303 | ||
304 | /* | |
305 | * Check if the allocation direction is bottom-up or not. | |
306 | * if this is true, that said, memblock will allocate memory | |
307 | * in bottom-up direction. | |
308 | */ | |
309 | static inline bool memblock_bottom_up(void) | |
310 | { | |
311 | return memblock.bottom_up; | |
312 | } | |
79442ed1 | 313 | |
e63075a3 | 314 | /* Flags for memblock_alloc_base() amd __memblock_alloc_base() */ |
2898cc4c | 315 | #define MEMBLOCK_ALLOC_ANYWHERE (~(phys_addr_t)0) |
e63075a3 BH |
316 | #define MEMBLOCK_ALLOC_ACCESSIBLE 0 |
317 | ||
2bfc2862 | 318 | phys_addr_t __init memblock_alloc_range(phys_addr_t size, phys_addr_t align, |
fc6daaf9 TL |
319 | phys_addr_t start, phys_addr_t end, |
320 | ulong flags); | |
581adcbe TH |
321 | phys_addr_t memblock_alloc_base(phys_addr_t size, phys_addr_t align, |
322 | phys_addr_t max_addr); | |
323 | phys_addr_t __memblock_alloc_base(phys_addr_t size, phys_addr_t align, | |
324 | phys_addr_t max_addr); | |
325 | phys_addr_t memblock_phys_mem_size(void); | |
8907de5d | 326 | phys_addr_t memblock_reserved_size(void); |
595ad9af | 327 | phys_addr_t memblock_mem_size(unsigned long limit_pfn); |
581adcbe TH |
328 | phys_addr_t memblock_start_of_DRAM(void); |
329 | phys_addr_t memblock_end_of_DRAM(void); | |
330 | void memblock_enforce_memory_limit(phys_addr_t memory_limit); | |
c9ca9b4e | 331 | void memblock_cap_memory_range(phys_addr_t base, phys_addr_t size); |
a571d4eb | 332 | void memblock_mem_limit_remove_map(phys_addr_t limit); |
b4ad0c7e | 333 | bool memblock_is_memory(phys_addr_t addr); |
bf3d3cc5 | 334 | int memblock_is_map_memory(phys_addr_t addr); |
581adcbe | 335 | int memblock_is_region_memory(phys_addr_t base, phys_addr_t size); |
b4ad0c7e | 336 | bool memblock_is_reserved(phys_addr_t addr); |
c5c5c9d1 | 337 | bool memblock_is_region_reserved(phys_addr_t base, phys_addr_t size); |
581adcbe | 338 | |
4ff7b82f TH |
339 | extern void __memblock_dump_all(void); |
340 | ||
341 | static inline void memblock_dump_all(void) | |
342 | { | |
343 | if (memblock_debug) | |
344 | __memblock_dump_all(); | |
345 | } | |
95f72d1e | 346 | |
e63075a3 BH |
347 | /** |
348 | * memblock_set_current_limit - Set the current allocation limit to allow | |
349 | * limiting allocations to what is currently | |
350 | * accessible during boot | |
351 | * @limit: New limit value (physical address) | |
352 | */ | |
581adcbe | 353 | void memblock_set_current_limit(phys_addr_t limit); |
e63075a3 | 354 | |
35a1f0bd | 355 | |
fec51014 LA |
356 | phys_addr_t memblock_get_current_limit(void); |
357 | ||
5b385f25 BH |
358 | /* |
359 | * pfn conversion functions | |
360 | * | |
361 | * While the memory MEMBLOCKs should always be page aligned, the reserved | |
362 | * MEMBLOCKs may not be. This accessor attempt to provide a very clear | |
363 | * idea of what they return for such non aligned MEMBLOCKs. | |
364 | */ | |
365 | ||
366 | /** | |
c7fc2de0 | 367 | * memblock_region_memory_base_pfn - Return the lowest pfn intersecting with the memory region |
5b385f25 BH |
368 | * @reg: memblock_region structure |
369 | */ | |
c7fc2de0 | 370 | static inline unsigned long memblock_region_memory_base_pfn(const struct memblock_region *reg) |
5b385f25 | 371 | { |
c7fc2de0 | 372 | return PFN_UP(reg->base); |
5b385f25 BH |
373 | } |
374 | ||
375 | /** | |
c7fc2de0 | 376 | * memblock_region_memory_end_pfn - Return the end_pfn this region |
5b385f25 BH |
377 | * @reg: memblock_region structure |
378 | */ | |
c7fc2de0 | 379 | static inline unsigned long memblock_region_memory_end_pfn(const struct memblock_region *reg) |
5b385f25 | 380 | { |
c7fc2de0 | 381 | return PFN_DOWN(reg->base + reg->size); |
5b385f25 BH |
382 | } |
383 | ||
384 | /** | |
c7fc2de0 | 385 | * memblock_region_reserved_base_pfn - Return the lowest pfn intersecting with the reserved region |
5b385f25 BH |
386 | * @reg: memblock_region structure |
387 | */ | |
c7fc2de0 | 388 | static inline unsigned long memblock_region_reserved_base_pfn(const struct memblock_region *reg) |
5b385f25 | 389 | { |
c7fc2de0 | 390 | return PFN_DOWN(reg->base); |
5b385f25 BH |
391 | } |
392 | ||
393 | /** | |
c7fc2de0 | 394 | * memblock_region_reserved_end_pfn - Return the end_pfn this region |
5b385f25 BH |
395 | * @reg: memblock_region structure |
396 | */ | |
c7fc2de0 | 397 | static inline unsigned long memblock_region_reserved_end_pfn(const struct memblock_region *reg) |
5b385f25 | 398 | { |
c7fc2de0 | 399 | return PFN_UP(reg->base + reg->size); |
5b385f25 BH |
400 | } |
401 | ||
402 | #define for_each_memblock(memblock_type, region) \ | |
ba6c19fd | 403 | for (region = memblock.memblock_type.regions; \ |
5b385f25 BH |
404 | region < (memblock.memblock_type.regions + memblock.memblock_type.cnt); \ |
405 | region++) | |
406 | ||
66e8b438 GK |
407 | #define for_each_memblock_type(i, memblock_type, rgn) \ |
408 | for (i = 0, rgn = &memblock_type->regions[0]; \ | |
409 | i < memblock_type->cnt; \ | |
410 | i++, rgn = &memblock_type->regions[i]) | |
5b385f25 | 411 | |
4a20799d | 412 | #ifdef CONFIG_MEMTEST |
7f70baee | 413 | extern void early_memtest(phys_addr_t start, phys_addr_t end); |
4a20799d | 414 | #else |
7f70baee | 415 | static inline void early_memtest(phys_addr_t start, phys_addr_t end) |
4a20799d VM |
416 | { |
417 | } | |
418 | #endif | |
419 | ||
864b9a39 MH |
420 | extern unsigned long memblock_reserved_memory_within(phys_addr_t start_addr, |
421 | phys_addr_t end_addr); | |
95dde501 YL |
422 | #else |
423 | static inline phys_addr_t memblock_alloc(phys_addr_t size, phys_addr_t align) | |
424 | { | |
1f5026a7 | 425 | return 0; |
95dde501 YL |
426 | } |
427 | ||
864b9a39 MH |
428 | static inline unsigned long memblock_reserved_memory_within(phys_addr_t start_addr, |
429 | phys_addr_t end_addr) | |
430 | { | |
431 | return 0; | |
432 | } | |
433 | ||
f0b37fad YL |
434 | #endif /* CONFIG_HAVE_MEMBLOCK */ |
435 | ||
95f72d1e YL |
436 | #endif /* __KERNEL__ */ |
437 | ||
438 | #endif /* _LINUX_MEMBLOCK_H */ |