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Merge tag 'trace-fixes-3.14' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt...
[mirror_ubuntu-bionic-kernel.git] / include / linux / bootmem.h
CommitLineData
1da177e4
LT		 1/*
2 * Discontiguous memory support, Kanoj Sarcar, SGI, Nov 1999
3 */
4#ifndef _LINUX_BOOTMEM_H
5#define _LINUX_BOOTMEM_H
6
1da177e4 7#include <linux/mmzone.h>
26f09e9b 8#include <linux/mm_types.h>
e786e86a 9#include <asm/dma.h>
1da177e4
LT		 10
11/*
12 * simple boot-time physical memory area allocator.
13 */
14
15extern unsigned long max_low_pfn;
16extern unsigned long min_low_pfn;
17
18/*
19 * highest page
20 */
21extern unsigned long max_pfn;
22
08677214 23#ifndef CONFIG_NO_BOOTMEM
1da177e4
LT		 24/*
25 * node_bootmem_map is a map pointer - the bits represent all physical
26 * memory pages (including holes) on the node.
27 */
28typedef struct bootmem_data {
3560e249 29 unsigned long node_min_pfn;
1da177e4
LT		 30 unsigned long node_low_pfn;
31 void *node_bootmem_map;
5f2809e6
JW		 32 unsigned long last_end_off;
33 unsigned long hint_idx;
679bc9fb 34 struct list_head list;
1da177e4
LT		 35} bootmem_data_t;
36
b61bfa3c 37extern bootmem_data_t bootmem_node_data[];
08677214 38#endif
b61bfa3c 39
f71bf0ca 40extern unsigned long bootmem_bootmap_pages(unsigned long);
223e8dc9
JW		 41
42extern unsigned long init_bootmem_node(pg_data_t *pgdat,
43 unsigned long freepfn,
44 unsigned long startpfn,
45 unsigned long endpfn);
f71bf0ca 46extern unsigned long init_bootmem(unsigned long addr, unsigned long memend);
223e8dc9 47
223e8dc9 48extern unsigned long free_all_bootmem(void);
7b4b2a0d 49extern void reset_all_zones_managed_pages(void);
223e8dc9
JW		 50
51extern void free_bootmem_node(pg_data_t *pgdat,
52 unsigned long addr,
53 unsigned long size);
81df9bff
JK		 54extern void free_bootmem(unsigned long physaddr, unsigned long size);
55extern void free_bootmem_late(unsigned long physaddr, unsigned long size);
223e8dc9
JW		 56
57/*
58 * Flags for reserve_bootmem (also if CONFIG_HAVE_ARCH_BOOTMEM_NODE,
59 * the architecture-specific code should honor this).
60 *
61 * If flags is 0, then the return value is always 0 (success). If
62 * flags contains BOOTMEM_EXCLUSIVE, then -EBUSY is returned if the
63 * memory already was reserved.
64 */
65#define BOOTMEM_DEFAULT 0
66#define BOOTMEM_EXCLUSIVE (1<<0)
67
c1329375
TH		 68extern int reserve_bootmem(unsigned long addr,
69 unsigned long size,
70 int flags);
2d0aae41
TH		 71extern int reserve_bootmem_node(pg_data_t *pgdat,
72 unsigned long physaddr,
73 unsigned long size,
74 int flags);
75
76extern void *__alloc_bootmem(unsigned long size,
f71bf0ca
FBH		 77 unsigned long align,
78 unsigned long goal);
2d0aae41 79extern void *__alloc_bootmem_nopanic(unsigned long size,
f71bf0ca
FBH		 80 unsigned long align,
81 unsigned long goal);
223e8dc9
JW		 82extern void *__alloc_bootmem_node(pg_data_t *pgdat,
83 unsigned long size,
84 unsigned long align,
85 unsigned long goal);
08677214
YL		 86void *__alloc_bootmem_node_high(pg_data_t *pgdat,
87 unsigned long size,
88 unsigned long align,
89 unsigned long goal);
223e8dc9
JW		 90extern void *__alloc_bootmem_node_nopanic(pg_data_t *pgdat,
91 unsigned long size,
92 unsigned long align,
93 unsigned long goal);
99ab7b19
YL		 94void *___alloc_bootmem_node_nopanic(pg_data_t *pgdat,
95 unsigned long size,
96 unsigned long align,
97 unsigned long goal,
98 unsigned long limit);
2d0aae41
TH		 99extern void *__alloc_bootmem_low(unsigned long size,
100 unsigned long align,
101 unsigned long goal);
38fa4175
YL		 102void *__alloc_bootmem_low_nopanic(unsigned long size,
103 unsigned long align,
104 unsigned long goal);
f71bf0ca
FBH		 105extern void *__alloc_bootmem_low_node(pg_data_t *pgdat,
106 unsigned long size,
107 unsigned long align,
108 unsigned long goal);
c1329375 109
8bba154e
YL		 110#ifdef CONFIG_NO_BOOTMEM
111/* We are using top down, so it is safe to use 0 here */
112#define BOOTMEM_LOW_LIMIT 0
113#else
114#define BOOTMEM_LOW_LIMIT __pa(MAX_DMA_ADDRESS)
115#endif
116
1da177e4 117#define alloc_bootmem(x) \
8bba154e 118 __alloc_bootmem(x, SMP_CACHE_BYTES, BOOTMEM_LOW_LIMIT)
53dde5f3 119#define alloc_bootmem_align(x, align) \
8bba154e 120 __alloc_bootmem(x, align, BOOTMEM_LOW_LIMIT)
74768ed8 121#define alloc_bootmem_nopanic(x) \
8bba154e 122 __alloc_bootmem_nopanic(x, SMP_CACHE_BYTES, BOOTMEM_LOW_LIMIT)
1da177e4 123#define alloc_bootmem_pages(x) \
8bba154e 124 __alloc_bootmem(x, PAGE_SIZE, BOOTMEM_LOW_LIMIT)
74768ed8 125#define alloc_bootmem_pages_nopanic(x) \
8bba154e 126 __alloc_bootmem_nopanic(x, PAGE_SIZE, BOOTMEM_LOW_LIMIT)
1da177e4 127#define alloc_bootmem_node(pgdat, x) \
8bba154e 128 __alloc_bootmem_node(pgdat, x, SMP_CACHE_BYTES, BOOTMEM_LOW_LIMIT)
8f389a99 129#define alloc_bootmem_node_nopanic(pgdat, x) \
8bba154e 130 __alloc_bootmem_node_nopanic(pgdat, x, SMP_CACHE_BYTES, BOOTMEM_LOW_LIMIT)
1da177e4 131#define alloc_bootmem_pages_node(pgdat, x) \
8bba154e 132 __alloc_bootmem_node(pgdat, x, PAGE_SIZE, BOOTMEM_LOW_LIMIT)
2d0aae41 133#define alloc_bootmem_pages_node_nopanic(pgdat, x) \
8bba154e 134 __alloc_bootmem_node_nopanic(pgdat, x, PAGE_SIZE, BOOTMEM_LOW_LIMIT)
2d0aae41
TH		 135
136#define alloc_bootmem_low(x) \
137 __alloc_bootmem_low(x, SMP_CACHE_BYTES, 0)
38fa4175
YL		 138#define alloc_bootmem_low_pages_nopanic(x) \
139 __alloc_bootmem_low_nopanic(x, PAGE_SIZE, 0)
2d0aae41
TH		 140#define alloc_bootmem_low_pages(x) \
141 __alloc_bootmem_low(x, PAGE_SIZE, 0)
1da177e4 142#define alloc_bootmem_low_pages_node(pgdat, x) \
71fb2e8f 143 __alloc_bootmem_low_node(pgdat, x, PAGE_SIZE, 0)
c6af5e9f 144
26f09e9b
SS		 145
146#if defined(CONFIG_HAVE_MEMBLOCK) && defined(CONFIG_NO_BOOTMEM)
147
148/* FIXME: use MEMBLOCK_ALLOC_* variants here */
149#define BOOTMEM_ALLOC_ACCESSIBLE 0
150#define BOOTMEM_ALLOC_ANYWHERE (~(phys_addr_t)0)
151
152/* FIXME: Move to memblock.h at a point where we remove nobootmem.c */
153void *memblock_virt_alloc_try_nid_nopanic(phys_addr_t size,
154 phys_addr_t align, phys_addr_t min_addr,
155 phys_addr_t max_addr, int nid);
156void *memblock_virt_alloc_try_nid(phys_addr_t size, phys_addr_t align,
157 phys_addr_t min_addr, phys_addr_t max_addr, int nid);
158void __memblock_free_early(phys_addr_t base, phys_addr_t size);
159void __memblock_free_late(phys_addr_t base, phys_addr_t size);
160
161static inline void * __init memblock_virt_alloc(
162 phys_addr_t size, phys_addr_t align)
163{
164 return memblock_virt_alloc_try_nid(size, align, BOOTMEM_LOW_LIMIT,
165 BOOTMEM_ALLOC_ACCESSIBLE,
166 NUMA_NO_NODE);
167}
168
169static inline void * __init memblock_virt_alloc_nopanic(
170 phys_addr_t size, phys_addr_t align)
171{
172 return memblock_virt_alloc_try_nid_nopanic(size, align,
173 BOOTMEM_LOW_LIMIT,
174 BOOTMEM_ALLOC_ACCESSIBLE,
175 NUMA_NO_NODE);
176}
177
178static inline void * __init memblock_virt_alloc_from_nopanic(
179 phys_addr_t size, phys_addr_t align, phys_addr_t min_addr)
180{
181 return memblock_virt_alloc_try_nid_nopanic(size, align, min_addr,
182 BOOTMEM_ALLOC_ACCESSIBLE,
183 NUMA_NO_NODE);
184}
185
186static inline void * __init memblock_virt_alloc_node(
187 phys_addr_t size, int nid)
188{
189 return memblock_virt_alloc_try_nid(size, 0, BOOTMEM_LOW_LIMIT,
190 BOOTMEM_ALLOC_ACCESSIBLE, nid);
191}
192
193static inline void * __init memblock_virt_alloc_node_nopanic(
194 phys_addr_t size, int nid)
195{
196 return memblock_virt_alloc_try_nid_nopanic(size, 0, BOOTMEM_LOW_LIMIT,
197 BOOTMEM_ALLOC_ACCESSIBLE,
198 nid);
199}
200
201static inline void __init memblock_free_early(
202 phys_addr_t base, phys_addr_t size)
203{
204 __memblock_free_early(base, size);
205}
206
207static inline void __init memblock_free_early_nid(
208 phys_addr_t base, phys_addr_t size, int nid)
209{
210 __memblock_free_early(base, size);
211}
212
213static inline void __init memblock_free_late(
214 phys_addr_t base, phys_addr_t size)
215{
216 __memblock_free_late(base, size);
217}
218
219#else
220
221#define BOOTMEM_ALLOC_ACCESSIBLE 0
222
223
224/* Fall back to all the existing bootmem APIs */
225static inline void * __init memblock_virt_alloc(
226 phys_addr_t size, phys_addr_t align)
227{
228 if (!align)
229 align = SMP_CACHE_BYTES;
230 return __alloc_bootmem(size, align, BOOTMEM_LOW_LIMIT);
231}
232
233static inline void * __init memblock_virt_alloc_nopanic(
234 phys_addr_t size, phys_addr_t align)
235{
236 if (!align)
237 align = SMP_CACHE_BYTES;
238 return __alloc_bootmem_nopanic(size, align, BOOTMEM_LOW_LIMIT);
239}
240
241static inline void * __init memblock_virt_alloc_from_nopanic(
242 phys_addr_t size, phys_addr_t align, phys_addr_t min_addr)
243{
244 return __alloc_bootmem_nopanic(size, align, min_addr);
245}
246
247static inline void * __init memblock_virt_alloc_node(
248 phys_addr_t size, int nid)
249{
250 return __alloc_bootmem_node(NODE_DATA(nid), size, SMP_CACHE_BYTES,
251 BOOTMEM_LOW_LIMIT);
252}
253
254static inline void * __init memblock_virt_alloc_node_nopanic(
255 phys_addr_t size, int nid)
256{
257 return __alloc_bootmem_node_nopanic(NODE_DATA(nid), size,
258 SMP_CACHE_BYTES,
259 BOOTMEM_LOW_LIMIT);
260}
261
262static inline void * __init memblock_virt_alloc_try_nid(phys_addr_t size,
263 phys_addr_t align, phys_addr_t min_addr, phys_addr_t max_addr, int nid)
264{
265 return __alloc_bootmem_node_high(NODE_DATA(nid), size, align,
266 min_addr);
267}
268
269static inline void * __init memblock_virt_alloc_try_nid_nopanic(
270 phys_addr_t size, phys_addr_t align,
271 phys_addr_t min_addr, phys_addr_t max_addr, int nid)
272{
273 return ___alloc_bootmem_node_nopanic(NODE_DATA(nid), size, align,
274 min_addr, max_addr);
275}
276
277static inline void __init memblock_free_early(
278 phys_addr_t base, phys_addr_t size)
279{
280 free_bootmem(base, size);
281}
282
283static inline void __init memblock_free_early_nid(
284 phys_addr_t base, phys_addr_t size, int nid)
285{
286 free_bootmem_node(NODE_DATA(nid), base, size);
287}
288
289static inline void __init memblock_free_late(
290 phys_addr_t base, phys_addr_t size)
291{
292 free_bootmem_late(base, size);
293}
294#endif /* defined(CONFIG_HAVE_MEMBLOCK) && defined(CONFIG_NO_BOOTMEM) */
295
6f167ec7
DH		 296#ifdef CONFIG_HAVE_ARCH_ALLOC_REMAP
297extern void *alloc_remap(int nid, unsigned long size);
298#else
299static inline void *alloc_remap(int nid, unsigned long size)
300{
301 return NULL;
302}
f71bf0ca 303#endif /* CONFIG_HAVE_ARCH_ALLOC_REMAP */
6f167ec7 304
f71bf0ca
FBH		 305extern void *alloc_large_system_hash(const char *tablename,
306 unsigned long bucketsize,
307 unsigned long numentries,
308 int scale,
309 int flags,
310 unsigned int *_hash_shift,
311 unsigned int *_hash_mask,
31fe62b9
TB		 312 unsigned long low_limit,
313 unsigned long high_limit);
1da177e4 314
04903664 315#define HASH_EARLY 0x00000001 /* Allocating during early boot? */
2c85f51d
JB		 316#define HASH_SMALL 0x00000002 /* sub-page allocation allowed, min
317 * shift passed via *_hash_shift */
1da177e4 318
c2fdf3a9
AB		 319/* Only NUMA needs hash distribution. 64bit NUMA architectures have
320 * sufficient vmalloc space.
1da177e4 321 */
c2fdf3a9 322#if defined(CONFIG_NUMA) && defined(CONFIG_64BIT)
1da177e4
LT		 323#define HASHDIST_DEFAULT 1
324#else
325#define HASHDIST_DEFAULT 0
326#endif
f034b5d4 327extern int hashdist; /* Distribute hashes across NUMA nodes? */
1da177e4
LT		 328
329
330#endif /* _LINUX_BOOTMEM_H */
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