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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 | /* * Discontiguous memory support, Kanoj Sarcar, SGI, Nov 1999 */ #ifndef _LINUX_BOOTMEM_H #define _LINUX_BOOTMEM_H #include <linux/mmzone.h> #include <linux/mm_types.h> #include <asm/dma.h> /* * simple boot-time physical memory area allocator. */ extern unsigned long max_low_pfn; extern unsigned long min_low_pfn; /* * highest page */ extern unsigned long max_pfn; #ifndef CONFIG_NO_BOOTMEM /* * node_bootmem_map is a map pointer - the bits represent all physical * memory pages (including holes) on the node. */ typedef struct bootmem_data { unsigned long node_min_pfn; unsigned long node_low_pfn; void *node_bootmem_map; unsigned long last_end_off; unsigned long hint_idx; struct list_head list; } bootmem_data_t; extern bootmem_data_t bootmem_node_data[]; #endif extern unsigned long bootmem_bootmap_pages(unsigned long); extern unsigned long init_bootmem_node(pg_data_t *pgdat, unsigned long freepfn, unsigned long startpfn, unsigned long endpfn); extern unsigned long init_bootmem(unsigned long addr, unsigned long memend); extern unsigned long free_all_bootmem(void); extern void reset_node_managed_pages(pg_data_t *pgdat); extern void reset_all_zones_managed_pages(void); extern void free_bootmem_node(pg_data_t *pgdat, unsigned long addr, unsigned long size); extern void free_bootmem(unsigned long physaddr, unsigned long size); extern void free_bootmem_late(unsigned long physaddr, unsigned long size); /* * Flags for reserve_bootmem (also if CONFIG_HAVE_ARCH_BOOTMEM_NODE, * the architecture-specific code should honor this). * * If flags is BOOTMEM_DEFAULT, then the return value is always 0 (success). * If flags contains BOOTMEM_EXCLUSIVE, then -EBUSY is returned if the memory * already was reserved. */ #define BOOTMEM_DEFAULT 0 #define BOOTMEM_EXCLUSIVE (1<<0) extern int reserve_bootmem(unsigned long addr, unsigned long size, int flags); extern int reserve_bootmem_node(pg_data_t *pgdat, unsigned long physaddr, unsigned long size, int flags); extern void *__alloc_bootmem(unsigned long size, unsigned long align, unsigned long goal); extern void *__alloc_bootmem_nopanic(unsigned long size, unsigned long align, unsigned long goal); extern void *__alloc_bootmem_node(pg_data_t *pgdat, unsigned long size, unsigned long align, unsigned long goal); void *__alloc_bootmem_node_high(pg_data_t *pgdat, unsigned long size, unsigned long align, unsigned long goal); extern void *__alloc_bootmem_node_nopanic(pg_data_t *pgdat, unsigned long size, unsigned long align, unsigned long goal); void *___alloc_bootmem_node_nopanic(pg_data_t *pgdat, unsigned long size, unsigned long align, unsigned long goal, unsigned long limit); extern void *__alloc_bootmem_low(unsigned long size, unsigned long align, unsigned long goal); void *__alloc_bootmem_low_nopanic(unsigned long size, unsigned long align, unsigned long goal); extern void *__alloc_bootmem_low_node(pg_data_t *pgdat, unsigned long size, unsigned long align, unsigned long goal); #ifdef CONFIG_NO_BOOTMEM /* We are using top down, so it is safe to use 0 here */ #define BOOTMEM_LOW_LIMIT 0 #else #define BOOTMEM_LOW_LIMIT __pa(MAX_DMA_ADDRESS) #endif #define alloc_bootmem(x) \ __alloc_bootmem(x, SMP_CACHE_BYTES, BOOTMEM_LOW_LIMIT) #define alloc_bootmem_align(x, align) \ __alloc_bootmem(x, align, BOOTMEM_LOW_LIMIT) #define alloc_bootmem_nopanic(x) \ __alloc_bootmem_nopanic(x, SMP_CACHE_BYTES, BOOTMEM_LOW_LIMIT) #define alloc_bootmem_pages(x) \ __alloc_bootmem(x, PAGE_SIZE, BOOTMEM_LOW_LIMIT) #define alloc_bootmem_pages_nopanic(x) \ __alloc_bootmem_nopanic(x, PAGE_SIZE, BOOTMEM_LOW_LIMIT) #define alloc_bootmem_node(pgdat, x) \ __alloc_bootmem_node(pgdat, x, SMP_CACHE_BYTES, BOOTMEM_LOW_LIMIT) #define alloc_bootmem_node_nopanic(pgdat, x) \ __alloc_bootmem_node_nopanic(pgdat, x, SMP_CACHE_BYTES, BOOTMEM_LOW_LIMIT) #define alloc_bootmem_pages_node(pgdat, x) \ __alloc_bootmem_node(pgdat, x, PAGE_SIZE, BOOTMEM_LOW_LIMIT) #define alloc_bootmem_pages_node_nopanic(pgdat, x) \ __alloc_bootmem_node_nopanic(pgdat, x, PAGE_SIZE, BOOTMEM_LOW_LIMIT) #define alloc_bootmem_low(x) \ __alloc_bootmem_low(x, SMP_CACHE_BYTES, 0) #define alloc_bootmem_low_pages_nopanic(x) \ __alloc_bootmem_low_nopanic(x, PAGE_SIZE, 0) #define alloc_bootmem_low_pages(x) \ __alloc_bootmem_low(x, PAGE_SIZE, 0) #define alloc_bootmem_low_pages_node(pgdat, x) \ __alloc_bootmem_low_node(pgdat, x, PAGE_SIZE, 0) #if defined(CONFIG_HAVE_MEMBLOCK) && defined(CONFIG_NO_BOOTMEM) /* FIXME: use MEMBLOCK_ALLOC_* variants here */ #define BOOTMEM_ALLOC_ACCESSIBLE 0 #define BOOTMEM_ALLOC_ANYWHERE (~(phys_addr_t)0) /* FIXME: Move to memblock.h at a point where we remove nobootmem.c */ void *memblock_virt_alloc_try_nid_nopanic(phys_addr_t size, phys_addr_t align, phys_addr_t min_addr, phys_addr_t max_addr, int nid); void *memblock_virt_alloc_try_nid(phys_addr_t size, phys_addr_t align, phys_addr_t min_addr, phys_addr_t max_addr, int nid); void __memblock_free_early(phys_addr_t base, phys_addr_t size); void __memblock_free_late(phys_addr_t base, phys_addr_t size); static inline void * __init memblock_virt_alloc( phys_addr_t size, phys_addr_t align) { return memblock_virt_alloc_try_nid(size, align, BOOTMEM_LOW_LIMIT, BOOTMEM_ALLOC_ACCESSIBLE, NUMA_NO_NODE); } static inline void * __init memblock_virt_alloc_nopanic( phys_addr_t size, phys_addr_t align) { return memblock_virt_alloc_try_nid_nopanic(size, align, BOOTMEM_LOW_LIMIT, BOOTMEM_ALLOC_ACCESSIBLE, NUMA_NO_NODE); } #ifndef ARCH_LOW_ADDRESS_LIMIT #define ARCH_LOW_ADDRESS_LIMIT 0xffffffffUL #endif static inline void * __init memblock_virt_alloc_low( phys_addr_t size, phys_addr_t align) { return memblock_virt_alloc_try_nid(size, align, BOOTMEM_LOW_LIMIT, ARCH_LOW_ADDRESS_LIMIT, NUMA_NO_NODE); } static inline void * __init memblock_virt_alloc_low_nopanic( phys_addr_t size, phys_addr_t align) { return memblock_virt_alloc_try_nid_nopanic(size, align, BOOTMEM_LOW_LIMIT, ARCH_LOW_ADDRESS_LIMIT, NUMA_NO_NODE); } static inline void * __init memblock_virt_alloc_from_nopanic( phys_addr_t size, phys_addr_t align, phys_addr_t min_addr) { return memblock_virt_alloc_try_nid_nopanic(size, align, min_addr, BOOTMEM_ALLOC_ACCESSIBLE, NUMA_NO_NODE); } static inline void * __init memblock_virt_alloc_node( phys_addr_t size, int nid) { return memblock_virt_alloc_try_nid(size, 0, BOOTMEM_LOW_LIMIT, BOOTMEM_ALLOC_ACCESSIBLE, nid); } static inline void * __init memblock_virt_alloc_node_nopanic( phys_addr_t size, int nid) { return memblock_virt_alloc_try_nid_nopanic(size, 0, BOOTMEM_LOW_LIMIT, BOOTMEM_ALLOC_ACCESSIBLE, nid); } static inline void __init memblock_free_early( phys_addr_t base, phys_addr_t size) { __memblock_free_early(base, size); } static inline void __init memblock_free_early_nid( phys_addr_t base, phys_addr_t size, int nid) { __memblock_free_early(base, size); } static inline void __init memblock_free_late( phys_addr_t base, phys_addr_t size) { __memblock_free_late(base, size); } #else #define BOOTMEM_ALLOC_ACCESSIBLE 0 /* Fall back to all the existing bootmem APIs */ static inline void * __init memblock_virt_alloc( phys_addr_t size, phys_addr_t align) { if (!align) align = SMP_CACHE_BYTES; return __alloc_bootmem(size, align, BOOTMEM_LOW_LIMIT); } static inline void * __init memblock_virt_alloc_nopanic( phys_addr_t size, phys_addr_t align) { if (!align) align = SMP_CACHE_BYTES; return __alloc_bootmem_nopanic(size, align, BOOTMEM_LOW_LIMIT); } static inline void * __init memblock_virt_alloc_low( phys_addr_t size, phys_addr_t align) { if (!align) align = SMP_CACHE_BYTES; return __alloc_bootmem_low(size, align, 0); } static inline void * __init memblock_virt_alloc_low_nopanic( phys_addr_t size, phys_addr_t align) { if (!align) align = SMP_CACHE_BYTES; return __alloc_bootmem_low_nopanic(size, align, 0); } static inline void * __init memblock_virt_alloc_from_nopanic( phys_addr_t size, phys_addr_t align, phys_addr_t min_addr) { return __alloc_bootmem_nopanic(size, align, min_addr); } static inline void * __init memblock_virt_alloc_node( phys_addr_t size, int nid) { return __alloc_bootmem_node(NODE_DATA(nid), size, SMP_CACHE_BYTES, BOOTMEM_LOW_LIMIT); } static inline void * __init memblock_virt_alloc_node_nopanic( phys_addr_t size, int nid) { return __alloc_bootmem_node_nopanic(NODE_DATA(nid), size, SMP_CACHE_BYTES, BOOTMEM_LOW_LIMIT); } static inline void * __init memblock_virt_alloc_try_nid(phys_addr_t size, phys_addr_t align, phys_addr_t min_addr, phys_addr_t max_addr, int nid) { return __alloc_bootmem_node_high(NODE_DATA(nid), size, align, min_addr); } static inline void * __init memblock_virt_alloc_try_nid_nopanic( phys_addr_t size, phys_addr_t align, phys_addr_t min_addr, phys_addr_t max_addr, int nid) { return ___alloc_bootmem_node_nopanic(NODE_DATA(nid), size, align, min_addr, max_addr); } static inline void __init memblock_free_early( phys_addr_t base, phys_addr_t size) { free_bootmem(base, size); } static inline void __init memblock_free_early_nid( phys_addr_t base, phys_addr_t size, int nid) { free_bootmem_node(NODE_DATA(nid), base, size); } static inline void __init memblock_free_late( phys_addr_t base, phys_addr_t size) { free_bootmem_late(base, size); } #endif /* defined(CONFIG_HAVE_MEMBLOCK) && defined(CONFIG_NO_BOOTMEM) */ #ifdef CONFIG_HAVE_ARCH_ALLOC_REMAP extern void *alloc_remap(int nid, unsigned long size); #else static inline void *alloc_remap(int nid, unsigned long size) { return NULL; } #endif /* CONFIG_HAVE_ARCH_ALLOC_REMAP */ extern void *alloc_large_system_hash(const char *tablename, unsigned long bucketsize, unsigned long numentries, int scale, int flags, unsigned int *_hash_shift, unsigned int *_hash_mask, unsigned long low_limit, unsigned long high_limit); #define HASH_EARLY 0x00000001 /* Allocating during early boot? */ #define HASH_SMALL 0x00000002 /* sub-page allocation allowed, min * shift passed via *_hash_shift */ /* Only NUMA needs hash distribution. 64bit NUMA architectures have * sufficient vmalloc space. */ #if defined(CONFIG_NUMA) && defined(CONFIG_64BIT) #define HASHDIST_DEFAULT 1 #else #define HASHDIST_DEFAULT 0 #endif extern int hashdist; /* Distribute hashes across NUMA nodes? */ #endif /* _LINUX_BOOTMEM_H */ |