Lines Matching +full:reserved +full:- +full:memory
1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Procedures for maintaining information about logical memory blocks.
35 * Memblock is a method of managing memory regions during the early
36 * boot period when the usual kernel memory allocators are not up and
39 * Memblock views the system memory as collections of contiguous
42 * * ``memory`` - describes the physical memory available to the
43 * kernel; this may differ from the actual physical memory installed
44 * in the system, for instance when the memory is restricted with
46 * * ``reserved`` - describes the regions that were allocated
47 * * ``physmem`` - describes the actual physical memory available during
48 * boot regardless of the possible restrictions and memory hot(un)plug;
53 * systems. Every memory type is described by the struct memblock_type
54 * which contains an array of memory regions along with
55 * the allocator metadata. The "memory" and "reserved" types are nicely
58 * %INIT_MEMBLOCK_REGIONS for "memory" and %INIT_MEMBLOCK_RESERVED_REGIONS
59 * for "reserved". The region array for "physmem" is initially sized to
63 * with care so that memory allocated for the region array will not
64 * overlap with areas that should be reserved, for example initrd.
67 * memory layout is by using memblock_add() or memblock_add_node()
74 * Once memblock is setup the memory can be allocated using one of the
77 * * memblock_phys_alloc*() - these functions return the **physical**
78 * address of the allocated memory
79 * * memblock_alloc*() - these functions return the **virtual** address
80 * of the allocated memory.
83 * memory ranges and the fallback methods. Consult the documentation
88 * function frees all the memory to the buddy page allocator.
112 .memory.regions = memblock_memory_init_regions,
113 .memory.cnt = 1, /* empty dummy entry */
114 .memory.max = INIT_MEMBLOCK_REGIONS,
115 .memory.name = "memory",
117 .reserved.regions = memblock_reserved_init_regions,
118 .reserved.cnt = 1, /* empty dummy entry */
119 .reserved.max = INIT_MEMBLOCK_RESERVED_REGIONS,
120 .reserved.name = "reserved",
136 * keep a pointer to &memblock.memory in the text section to use it in
141 static __refdata struct memblock_type *memblock_memory = &memblock.memory;
144 for (i = 0, rgn = &memblock_type->regions[0]; \
145 i < memblock_type->cnt; \
146 i++, rgn = &memblock_type->regions[i])
168 return *size = min(*size, PHYS_ADDR_MAX - base); in memblock_cap_size()
185 for (i = 0; i < type->cnt; i++) in memblock_overlaps_region()
186 if (memblock_addrs_overlap(base, size, type->regions[i].base, in memblock_overlaps_region()
187 type->regions[i].size)) in memblock_overlaps_region()
189 return i < type->cnt; in memblock_overlaps_region()
193 * __memblock_find_range_bottom_up - find free area utility in bottom-up
200 * @flags: pick from blocks based on memory attributes
202 * Utility called from memblock_find_in_range_node(), find free area bottom-up.
220 if (cand < this_end && this_end - cand >= size) in __memblock_find_range_bottom_up()
228 * __memblock_find_range_top_down - find free area utility, in top-down
235 * @flags: pick from blocks based on memory attributes
237 * Utility called from memblock_find_in_range_node(), find free area top-down.
258 cand = round_down(this_end - size, align); in __memblock_find_range_top_down()
267 * memblock_find_in_range_node - find free area in given range and node
274 * @flags: pick from blocks based on memory attributes
304 * memblock_find_in_range - find free area in given range
328 pr_warn("Could not allocate %pap bytes of mirrored memory\n", in memblock_find_in_range()
339 type->total_size -= type->regions[r].size; in memblock_remove_region()
340 memmove(&type->regions[r], &type->regions[r + 1], in memblock_remove_region()
341 (type->cnt - (r + 1)) * sizeof(type->regions[r])); in memblock_remove_region()
342 type->cnt--; in memblock_remove_region()
345 if (type->cnt == 0) { in memblock_remove_region()
346 WARN_ON(type->total_size != 0); in memblock_remove_region()
347 type->cnt = 1; in memblock_remove_region()
348 type->regions[0].base = 0; in memblock_remove_region()
349 type->regions[0].size = 0; in memblock_remove_region()
350 type->regions[0].flags = 0; in memblock_remove_region()
351 memblock_set_region_node(&type->regions[0], MAX_NUMNODES); in memblock_remove_region()
357 * memblock_discard - discard memory and reserved arrays if they were allocated
363 if (memblock.reserved.regions != memblock_reserved_init_regions) { in memblock_discard()
364 addr = __pa(memblock.reserved.regions); in memblock_discard()
366 memblock.reserved.max); in memblock_discard()
370 if (memblock.memory.regions != memblock_memory_init_regions) { in memblock_discard()
371 addr = __pa(memblock.memory.regions); in memblock_discard()
373 memblock.memory.max); in memblock_discard()
382 * memblock_double_array - double the size of the memblock regions array
384 * @new_area_start: starting address of memory range to avoid overlap with
385 * @new_area_size: size of memory range to avoid overlap with
388 * allocate memory for a new reserved regions array and there is a previously
389 * allocated memory range [@new_area_start, @new_area_start + @new_area_size]
390 * waiting to be reserved, ensure the memory used by the new array does
394 * 0 on success, -1 on failure.
406 /* We don't allow resizing until we know about the reserved regions in memblock_double_array()
407 * of memory that aren't suitable for allocation in memblock_double_array()
410 return -1; in memblock_double_array()
413 old_size = type->max * sizeof(struct memblock_region); in memblock_double_array()
423 if (type == &memblock.memory) in memblock_double_array()
433 /* only exclude range when trying to double reserved.regions */ in memblock_double_array()
434 if (type != &memblock.reserved) in memblock_double_array()
449 type->name, type->max, type->max * 2); in memblock_double_array()
450 return -1; in memblock_double_array()
453 new_end = addr + new_size - 1; in memblock_double_array()
454 memblock_dbg("memblock: %s is doubled to %ld at [%pa-%pa]", in memblock_double_array()
455 type->name, type->max * 2, &addr, &new_end); in memblock_double_array()
459 * reserved region since it may be our reserved array itself that is in memblock_double_array()
462 memcpy(new_array, type->regions, old_size); in memblock_double_array()
463 memset(new_array + type->max, 0, old_size); in memblock_double_array()
464 old_array = type->regions; in memblock_double_array()
465 type->regions = new_array; in memblock_double_array()
466 type->max <<= 1; in memblock_double_array()
489 * memblock_merge_regions - merge neighboring compatible regions
499 while (i < type->cnt - 1) { in memblock_merge_regions()
500 struct memblock_region *this = &type->regions[i]; in memblock_merge_regions()
501 struct memblock_region *next = &type->regions[i + 1]; in memblock_merge_regions()
503 if (this->base + this->size != next->base || in memblock_merge_regions()
506 this->flags != next->flags) { in memblock_merge_regions()
507 BUG_ON(this->base + this->size > next->base); in memblock_merge_regions()
512 this->size += next->size; in memblock_merge_regions()
514 memmove(next, next + 1, (type->cnt - (i + 2)) * sizeof(*next)); in memblock_merge_regions()
515 type->cnt--; in memblock_merge_regions()
520 * memblock_insert_region - insert new memblock region
537 struct memblock_region *rgn = &type->regions[idx]; in memblock_insert_region()
539 BUG_ON(type->cnt >= type->max); in memblock_insert_region()
540 memmove(rgn + 1, rgn, (type->cnt - idx) * sizeof(*rgn)); in memblock_insert_region()
541 rgn->base = base; in memblock_insert_region()
542 rgn->size = size; in memblock_insert_region()
543 rgn->flags = flags; in memblock_insert_region()
545 type->cnt++; in memblock_insert_region()
546 type->total_size += size; in memblock_insert_region()
550 * memblock_add_range - add new memblock region
558 * is allowed to overlap with existing ones - overlaps don't affect already
563 * 0 on success, -errno on failure.
579 if (type->regions[0].size == 0) { in memblock_add_range()
580 WARN_ON(type->cnt != 1 || type->total_size); in memblock_add_range()
581 type->regions[0].base = base; in memblock_add_range()
582 type->regions[0].size = size; in memblock_add_range()
583 type->regions[0].flags = flags; in memblock_add_range()
584 memblock_set_region_node(&type->regions[0], nid); in memblock_add_range()
585 type->total_size = size; in memblock_add_range()
598 phys_addr_t rbase = rgn->base; in memblock_add_range()
599 phys_addr_t rend = rbase + rgn->size; in memblock_add_range()
613 WARN_ON(flags != rgn->flags); in memblock_add_range()
617 rbase - base, nid, in memblock_add_range()
628 memblock_insert_region(type, idx, base, end - base, in memblock_add_range()
640 while (type->cnt + nr_new > type->max) in memblock_add_range()
642 return -ENOMEM; in memblock_add_range()
652 * memblock_add_node - add new memblock region within a NUMA node
657 * Add new memblock region [@base, @base + @size) to the "memory"
661 * 0 on success, -errno on failure.
666 return memblock_add_range(&memblock.memory, base, size, nid, 0); in memblock_add_node()
670 * memblock_add - add new memblock region
674 * Add new memblock region [@base, @base + @size) to the "memory"
678 * 0 on success, -errno on failure.
682 phys_addr_t end = base + size - 1; in memblock_add()
684 memblock_dbg("%s: [%pa-%pa] %pS\n", __func__, in memblock_add()
687 return memblock_add_range(&memblock.memory, base, size, MAX_NUMNODES, 0); in memblock_add()
691 * memblock_isolate_range - isolate given range into disjoint memblocks
704 * 0 on success, -errno on failure.
720 while (type->cnt + 2 > type->max) in memblock_isolate_range()
722 return -ENOMEM; in memblock_isolate_range()
725 phys_addr_t rbase = rgn->base; in memblock_isolate_range()
726 phys_addr_t rend = rbase + rgn->size; in memblock_isolate_range()
736 * to process the next region - the new top half. in memblock_isolate_range()
738 rgn->base = base; in memblock_isolate_range()
739 rgn->size -= base - rbase; in memblock_isolate_range()
740 type->total_size -= base - rbase; in memblock_isolate_range()
741 memblock_insert_region(type, idx, rbase, base - rbase, in memblock_isolate_range()
743 rgn->flags); in memblock_isolate_range()
747 * current region - the new bottom half. in memblock_isolate_range()
749 rgn->base = end; in memblock_isolate_range()
750 rgn->size -= end - rbase; in memblock_isolate_range()
751 type->total_size -= end - rbase; in memblock_isolate_range()
752 memblock_insert_region(type, idx--, rbase, end - rbase, in memblock_isolate_range()
754 rgn->flags); in memblock_isolate_range()
776 for (i = end_rgn - 1; i >= start_rgn; i--) in memblock_remove_range()
783 phys_addr_t end = base + size - 1; in memblock_remove()
785 memblock_dbg("%s: [%pa-%pa] %pS\n", __func__, in memblock_remove()
788 return memblock_remove_range(&memblock.memory, base, size); in memblock_remove()
792 * memblock_free - free boot memory block
793 * @base: phys starting address of the boot memory block
794 * @size: size of the boot memory block in bytes
796 * Free boot memory block previously allocated by memblock_alloc_xx() API.
797 * The freeing memory will not be released to the buddy allocator.
801 phys_addr_t end = base + size - 1; in memblock_free()
803 memblock_dbg("%s: [%pa-%pa] %pS\n", __func__, in memblock_free()
807 return memblock_remove_range(&memblock.reserved, base, size); in memblock_free()
812 phys_addr_t end = base + size - 1; in memblock_reserve()
814 memblock_dbg("%s: [%pa-%pa] %pS\n", __func__, in memblock_reserve()
817 return memblock_add_range(&memblock.reserved, base, size, MAX_NUMNODES, 0); in memblock_reserve()
823 phys_addr_t end = base + size - 1; in memblock_physmem_add()
825 memblock_dbg("%s: [%pa-%pa] %pS\n", __func__, in memblock_physmem_add()
833 * memblock_setclr_flag - set or clear flag for a memory region
841 * Return: 0 on success, -errno on failure.
846 struct memblock_type *type = &memblock.memory; in memblock_setclr_flag()
854 struct memblock_region *r = &type->regions[i]; in memblock_setclr_flag()
857 r->flags |= flag; in memblock_setclr_flag()
859 r->flags &= ~flag; in memblock_setclr_flag()
867 * memblock_mark_hotplug - Mark hotpluggable memory with flag MEMBLOCK_HOTPLUG.
871 * Return: 0 on success, -errno on failure.
879 * memblock_clear_hotplug - Clear flag MEMBLOCK_HOTPLUG for a specified region.
883 * Return: 0 on success, -errno on failure.
891 * memblock_mark_mirror - Mark mirrored memory with flag MEMBLOCK_MIRROR.
895 * Return: 0 on success, -errno on failure.
905 * memblock_mark_nomap - Mark a memory region with flag MEMBLOCK_NOMAP.
909 * Return: 0 on success, -errno on failure.
917 * memblock_clear_nomap - Clear flag MEMBLOCK_NOMAP for a specified region.
921 * Return: 0 on success, -errno on failure.
934 /* we never skip regions when iterating memblock.reserved or physmem */ in should_skip_region()
938 /* only memory regions are associated with nodes, check it */ in should_skip_region()
942 /* skip hotpluggable memory regions if needed */ in should_skip_region()
947 /* if we want mirror memory skip non-mirror memory regions */ in should_skip_region()
951 /* skip nomap memory unless we were asked for it explicitly */ in should_skip_region()
959 * __next_mem_range - next function for for_each_free_mem_range() etc.
962 * @flags: pick from blocks based on memory attributes
964 * @type_b: pointer to memblock_type which excludes memory from being taken
975 * 0:[0-16), 1:[32-48), 2:[128-130)
979 * 0:[0-0), 1:[16-32), 2:[48-128), 3:[130-MAX)
996 for (; idx_a < type_a->cnt; idx_a++) { in __next_mem_range()
997 struct memblock_region *m = &type_a->regions[idx_a]; in __next_mem_range()
999 phys_addr_t m_start = m->base; in __next_mem_range()
1000 phys_addr_t m_end = m->base + m->size; in __next_mem_range()
1019 for (; idx_b < type_b->cnt + 1; idx_b++) { in __next_mem_range()
1024 r = &type_b->regions[idx_b]; in __next_mem_range()
1025 r_start = idx_b ? r[-1].base + r[-1].size : 0; in __next_mem_range()
1026 r_end = idx_b < type_b->cnt ? in __next_mem_range()
1027 r->base : PHYS_ADDR_MAX; in __next_mem_range()
1063 * __next_mem_range_rev - generic next function for for_each_*_range_rev()
1067 * @flags: pick from blocks based on memory attributes
1069 * @type_b: pointer to memblock_type which excludes memory from being taken
1093 idx_a = type_a->cnt - 1; in __next_mem_range_rev()
1095 idx_b = type_b->cnt; in __next_mem_range_rev()
1100 for (; idx_a >= 0; idx_a--) { in __next_mem_range_rev()
1101 struct memblock_region *m = &type_a->regions[idx_a]; in __next_mem_range_rev()
1103 phys_addr_t m_start = m->base; in __next_mem_range_rev()
1104 phys_addr_t m_end = m->base + m->size; in __next_mem_range_rev()
1117 idx_a--; in __next_mem_range_rev()
1123 for (; idx_b >= 0; idx_b--) { in __next_mem_range_rev()
1128 r = &type_b->regions[idx_b]; in __next_mem_range_rev()
1129 r_start = idx_b ? r[-1].base + r[-1].size : 0; in __next_mem_range_rev()
1130 r_end = idx_b < type_b->cnt ? in __next_mem_range_rev()
1131 r->base : PHYS_ADDR_MAX; in __next_mem_range_rev()
1148 idx_a--; in __next_mem_range_rev()
1150 idx_b--; in __next_mem_range_rev()
1167 struct memblock_type *type = &memblock.memory; in __next_mem_pfn_range()
1171 while (++*idx < type->cnt) { in __next_mem_pfn_range()
1172 r = &type->regions[*idx]; in __next_mem_pfn_range()
1175 if (PFN_UP(r->base) >= PFN_DOWN(r->base + r->size)) in __next_mem_pfn_range()
1180 if (*idx >= type->cnt) { in __next_mem_pfn_range()
1181 *idx = -1; in __next_mem_pfn_range()
1186 *out_start_pfn = PFN_UP(r->base); in __next_mem_pfn_range()
1188 *out_end_pfn = PFN_DOWN(r->base + r->size); in __next_mem_pfn_range()
1194 * memblock_set_node - set node ID on memblock regions
1204 * 0 on success, -errno on failure.
1218 memblock_set_region_node(&type->regions[i], nid); in memblock_set_node()
1227 * __next_mem_pfn_range_in_zone - iterator for for_each_*_range_in_zone()
1230 * @zone: zone in which all of the memory blocks reside
1236 * deferred memory init routines and as such we were duplicating much of
1250 &memblock.memory, &memblock.reserved, in __next_mem_pfn_range_in_zone()
1261 if (zone->zone_start_pfn < epfn && spfn < epfn) { in __next_mem_pfn_range_in_zone()
1269 *out_spfn = max(zone->zone_start_pfn, spfn); in __next_mem_pfn_range_in_zone()
1277 &memblock.memory, &memblock.reserved, in __next_mem_pfn_range_in_zone()
1291 * memblock_alloc_range_nid - allocate boot memory block
1292 * @size: size of memory block to be allocated in bytes
1294 * @start: the lower bound of the memory region to allocate (phys address)
1295 * @end: the upper bound of the memory region to allocate (phys address)
1299 * The allocation is performed from memory region limited by
1302 * If the specified node can not hold the requested memory and @exact_nid
1305 * For systems with memory mirroring, the allocation is attempted first
1307 * memory region.
1310 * allocated boot memory block, so that it is never reported as leaks.
1313 * Physical address of allocated memory block on success, %0 on failure.
1348 pr_warn("Could not allocate %pap bytes of mirrored memory\n", in memblock_alloc_range_nid()
1370 * memblock_phys_alloc_range - allocate a memory block inside specified range
1371 * @size: size of memory block to be allocated in bytes
1373 * @start: the lower bound of the memory region to allocate (physical address)
1374 * @end: the upper bound of the memory region to allocate (physical address)
1378 * Return: physical address of the allocated memory block on success,
1391 * memblock_phys_alloc_try_nid - allocate a memory block from specified MUMA node
1392 * @size: size of memory block to be allocated in bytes
1396 * Allocates memory block from the specified NUMA node. If the node
1397 * has no available memory, attempts to allocated from any node in the
1400 * Return: physical address of the allocated memory block on success,
1410 * memblock_alloc_internal - allocate boot memory block
1411 * @size: size of memory block to be allocated in bytes
1413 * @min_addr: the lower bound of the memory region to allocate (phys address)
1414 * @max_addr: the upper bound of the memory region to allocate (phys address)
1418 * Allocates memory block using memblock_alloc_range_nid() and
1422 * will fall back to memory below @min_addr. Other constraints, such
1423 * as node and mirrored memory will be handled again in
1427 * Virtual address of allocated memory block on success, NULL on failure.
1462 * memblock_alloc_exact_nid_raw - allocate boot memory block on the exact node
1463 * without zeroing memory
1464 * @size: size of memory block to be allocated in bytes
1466 * @min_addr: the lower bound of the memory region from where the allocation
1468 * @max_addr: the upper bound of the memory region from where the allocation
1470 * allocate only from memory limited by memblock.current_limit value
1474 * info), if enabled. Does not zero allocated memory.
1477 * Virtual address of allocated memory block on success, NULL on failure.
1499 * memblock_alloc_try_nid_raw - allocate boot memory block without zeroing
1500 * memory and without panicking
1501 * @size: size of memory block to be allocated in bytes
1503 * @min_addr: the lower bound of the memory region from where the allocation
1505 * @max_addr: the upper bound of the memory region from where the allocation
1507 * allocate only from memory limited by memblock.current_limit value
1511 * info), if enabled. Does not zero allocated memory, does not panic if request
1515 * Virtual address of allocated memory block on success, NULL on failure.
1537 * memblock_alloc_try_nid - allocate boot memory block
1538 * @size: size of memory block to be allocated in bytes
1540 * @min_addr: the lower bound of the memory region from where the allocation
1542 * @max_addr: the upper bound of the memory region from where the allocation
1544 * allocate only from memory limited by memblock.current_limit value
1548 * info), if enabled. This function zeroes the allocated memory.
1551 * Virtual address of allocated memory block on success, NULL on failure.
1572 * __memblock_free_late - free pages directly to buddy allocator
1573 * @base: phys starting address of the boot memory block
1574 * @size: size of the boot memory block in bytes
1584 end = base + size - 1; in __memblock_free_late()
1585 memblock_dbg("%s: [%pa-%pa] %pS\n", in __memblock_free_late()
1603 return memblock.memory.total_size; in memblock_phys_mem_size()
1608 return memblock.reserved.total_size; in memblock_reserved_size()
1614 return memblock.memory.regions[0].base; in memblock_start_of_DRAM()
1619 int idx = memblock.memory.cnt - 1; in memblock_end_of_DRAM()
1621 return (memblock.memory.regions[idx].base + memblock.memory.regions[idx].size); in memblock_end_of_DRAM()
1630 * translate the memory @limit size into the max address within one of in __find_max_addr()
1631 * the memory memblock regions, if the @limit exceeds the total size in __find_max_addr()
1635 if (limit <= r->size) { in __find_max_addr()
1636 max_addr = r->base + limit; in __find_max_addr()
1639 limit -= r->size; in __find_max_addr()
1654 /* @limit exceeds the total size of the memory, do nothing */ in memblock_enforce_memory_limit()
1658 /* truncate both memory and reserved regions */ in memblock_enforce_memory_limit()
1659 memblock_remove_range(&memblock.memory, max_addr, in memblock_enforce_memory_limit()
1661 memblock_remove_range(&memblock.reserved, max_addr, in memblock_enforce_memory_limit()
1673 ret = memblock_isolate_range(&memblock.memory, base, size, in memblock_cap_memory_range()
1679 for (i = memblock.memory.cnt - 1; i >= end_rgn; i--) in memblock_cap_memory_range()
1680 if (!memblock_is_nomap(&memblock.memory.regions[i])) in memblock_cap_memory_range()
1681 memblock_remove_region(&memblock.memory, i); in memblock_cap_memory_range()
1683 for (i = start_rgn - 1; i >= 0; i--) in memblock_cap_memory_range()
1684 if (!memblock_is_nomap(&memblock.memory.regions[i])) in memblock_cap_memory_range()
1685 memblock_remove_region(&memblock.memory, i); in memblock_cap_memory_range()
1687 /* truncate the reserved regions */ in memblock_cap_memory_range()
1688 memblock_remove_range(&memblock.reserved, 0, base); in memblock_cap_memory_range()
1689 memblock_remove_range(&memblock.reserved, in memblock_cap_memory_range()
1702 /* @limit exceeds the total size of the memory, do nothing */ in memblock_mem_limit_remove_map()
1711 unsigned int left = 0, right = type->cnt; in memblock_search()
1716 if (addr < type->regions[mid].base) in memblock_search()
1718 else if (addr >= (type->regions[mid].base + in memblock_search()
1719 type->regions[mid].size)) in memblock_search()
1724 return -1; in memblock_search()
1729 return memblock_search(&memblock.reserved, addr) != -1; in memblock_is_reserved()
1734 return memblock_search(&memblock.memory, addr) != -1; in memblock_is_memory()
1739 int i = memblock_search(&memblock.memory, addr); in memblock_is_map_memory()
1741 if (i == -1) in memblock_is_map_memory()
1743 return !memblock_is_nomap(&memblock.memory.regions[i]); in memblock_is_map_memory()
1749 struct memblock_type *type = &memblock.memory; in memblock_search_pfn_nid()
1752 if (mid == -1) in memblock_search_pfn_nid()
1753 return -1; in memblock_search_pfn_nid()
1755 *start_pfn = PFN_DOWN(type->regions[mid].base); in memblock_search_pfn_nid()
1756 *end_pfn = PFN_DOWN(type->regions[mid].base + type->regions[mid].size); in memblock_search_pfn_nid()
1758 return memblock_get_region_node(&type->regions[mid]); in memblock_search_pfn_nid()
1762 * memblock_is_region_memory - check if a region is a subset of memory
1766 * Check if the region [@base, @base + @size) is a subset of a memory block.
1769 * 0 if false, non-zero if true
1773 int idx = memblock_search(&memblock.memory, base); in memblock_is_region_memory()
1776 if (idx == -1) in memblock_is_region_memory()
1778 return (memblock.memory.regions[idx].base + in memblock_is_region_memory()
1779 memblock.memory.regions[idx].size) >= end; in memblock_is_region_memory()
1783 * memblock_is_region_reserved - check if a region intersects reserved memory
1787 * Check if the region [@base, @base + @size) intersects a reserved
1788 * memory block.
1796 return memblock_overlaps_region(&memblock.reserved, base, size); in memblock_is_region_reserved()
1805 orig_start = r->base; in memblock_trim_memory()
1806 orig_end = r->base + r->size; in memblock_trim_memory()
1814 r->base = start; in memblock_trim_memory()
1815 r->size = end - start; in memblock_trim_memory()
1817 memblock_remove_region(&memblock.memory, in memblock_trim_memory()
1818 r - memblock.memory.regions); in memblock_trim_memory()
1819 r--; in memblock_trim_memory()
1841 pr_info(" %s.cnt = 0x%lx\n", type->name, type->cnt); in memblock_dump()
1846 base = rgn->base; in memblock_dump()
1847 size = rgn->size; in memblock_dump()
1848 end = base + size - 1; in memblock_dump()
1849 flags = rgn->flags; in memblock_dump()
1855 pr_info(" %s[%#x]\t[%pa-%pa], %pa bytes%s flags: %#x\n", in memblock_dump()
1856 type->name, idx, &base, &end, &size, nid_buf, flags); in memblock_dump()
1863 pr_info(" memory size = %pa reserved size = %pa\n", in __memblock_dump_all()
1864 &memblock.memory.total_size, in __memblock_dump_all()
1865 &memblock.reserved.total_size); in __memblock_dump_all()
1867 memblock_dump(&memblock.memory); in __memblock_dump_all()
1868 memblock_dump(&memblock.reserved); in __memblock_dump_all()
1898 order = min(MAX_ORDER - 1UL, __ffs(start)); in __free_pages_memory()
1901 order--; in __free_pages_memory()
1921 return end_pfn - start_pfn; in __free_memory_core()
1930 memblock_clear_hotplug(0, -1); in free_low_memory_core_early()
1936 * We need to use NUMA_NO_NODE instead of NODE_DATA(0)->node_id in free_low_memory_core_early()
1953 for (z = pgdat->node_zones; z < pgdat->node_zones + MAX_NR_ZONES; z++) in reset_node_managed_pages()
1954 atomic_long_set(&z->managed_pages, 0); in reset_node_managed_pages()
1971 * memblock_free_all - release free pages to the buddy allocator
1991 struct memblock_type *type = m->private; in memblock_debug_show()
1996 for (i = 0; i < type->cnt; i++) { in memblock_debug_show()
1997 reg = &type->regions[i]; in memblock_debug_show()
1998 end = reg->base + reg->size - 1; in memblock_debug_show()
2001 seq_printf(m, "%pa..%pa\n", ®->base, &end); in memblock_debug_show()
2011 debugfs_create_file("memory", 0444, root, in memblock_init_debugfs()
2012 &memblock.memory, &memblock_debug_fops); in memblock_init_debugfs()
2013 debugfs_create_file("reserved", 0444, root, in memblock_init_debugfs()
2014 &memblock.reserved, &memblock_debug_fops); in memblock_init_debugfs()