include/linux/memblock.h

6  * Logical memory blocks.
28  * enum memblock_flags - definition of memory region attributes
30  * @MEMBLOCK_HOTPLUG: memory region indicated in the firmware-provided memory
31  * map during early boot as hot(un)pluggable system RAM (e.g., memory range
33  * commandline, try keeping this memory region hotunpluggable. Does not apply
37  * reserved in the memory map; refer to memblock_mark_nomap() description
39  * @MEMBLOCK_DRIVER_MANAGED: memory region that is always detected and added
40  * via a driver, and never indicated in the firmware-provided memory map as
43  * @MEMBLOCK_RSRV_NOINIT: memory region for which struct pages are
56  * struct memblock_region - represents a memory region
59  * @flags: memory region attributes
72  * struct memblock_type - collection of memory regions of certain type
77  * @name: the memory type symbolic name
91  * @memory: usable memory regions
92  * @reserved: reserved memory regions
97 	struct memblock_type memory;
184  * @flags: pick from blocks based on memory attributes
204  * @flags: pick from blocks based on memory attributes
219  * for_each_mem_range - iterate through memory areas.
225 	__for_each_mem_range(i, &memblock.memory, NULL, NUMA_NO_NODE,	\
237 	__for_each_mem_range_rev(i, &memblock.memory, NULL, NUMA_NO_NODE, \
285  * for_each_mem_pfn_range - early memory pfn range iterator
292  * Walks over configured memory ranges.
306  * @zone: zone in which all of the memory blocks reside
310  * Walks over free (memory && !reserved) areas of memblock in a specific
326  * @zone: zone in which all of the memory blocks reside
330  * Walks over free (memory && !reserved) areas of memblock in a specific
346  * @flags: pick from blocks based on memory attributes
351  * Walks over free (memory && !reserved) areas of memblock.  Available as
355 	__for_each_mem_range(i, &memblock.memory, &memblock.reserved,	\
362  * @flags: pick from blocks based on memory attributes
367  * Walks over free (memory && !reserved) areas of memblock in reverse
372 	__for_each_mem_range_rev(i, &memblock.memory, &memblock.reserved, \
481  * if this is true, that said, memblock will allocate memory
518  * While the memory MEMBLOCKs should always be page aligned, the reserved
524  * memblock_region_memory_base_pfn - get the lowest pfn of the memory region
527  * Return: the lowest pfn intersecting with the memory region
535  * memblock_region_memory_end_pfn - get the end pfn of the memory region
568  * for_each_mem_region - itereate over memory regions
572 	for (region = memblock.memory.regions;				\
573 	     region < (memblock.memory.regions + memblock.memory.cnt);	\
577  * for_each_reserved_mem_region - itereate over reserved memory regions