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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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#include <linux/mm.h>#include <linux/kmemleak.h>
/* * Types for free bootmem stored in the low bits of page->private. */enum bootmem_type { MEMORY_HOTPLUG_MIN_BOOTMEM_TYPE = 1, SECTION_INFO = MEMORY_HOTPLUG_MIN_BOOTMEM_TYPE, MIX_SECTION_INFO, NODE_INFO, MEMORY_HOTPLUG_MAX_BOOTMEM_TYPE = NODE_INFO,};
#ifdef CONFIG_HAVE_BOOTMEM_INFO_NODEvoid __init register_page_bootmem_info_node(struct pglist_data *pgdat);void register_page_bootmem_memmap(unsigned long section_nr, struct page *map, unsigned long nr_pages);
void get_page_bootmem(unsigned long info, struct page *page, enum bootmem_type type);void put_page_bootmem(struct page *page);
static inline enum bootmem_type bootmem_type(const struct page *page){ return (unsigned long)page->private & 0xf;}
static inline unsigned long bootmem_info(const struct page *page){ return (unsigned long)page->private >> 4;}
/* * Any memory allocated via the memblock allocator and not via the * buddy will be marked reserved already in the memmap. For those * pages, we can call this function to free it to buddy allocator. */static inline void free_bootmem_page(struct page *page){ enum bootmem_type type = bootmem_type(page);
VM_BUG_ON_PAGE(page_ref_count(page) != 2, page);
if (type == SECTION_INFO || type == MIX_SECTION_INFO) put_page_bootmem(page); else VM_BUG_ON_PAGE(1, page);}#elsestatic inline void register_page_bootmem_info_node(struct pglist_data *pgdat){}
static inline void register_page_bootmem_memmap(unsigned long section_nr, struct page *map, unsigned long nr_pages){}
static inline void put_page_bootmem(struct page *page){}
static inline enum bootmem_type bootmem_type(const struct page *page){ return SECTION_INFO;}
static inline unsigned long bootmem_info(const struct page *page){ return 0;}
static inline void get_page_bootmem(unsigned long info, struct page *page, enum bootmem_type type){}
static inline void free_bootmem_page(struct page *page){ free_reserved_page(page);}#endif
#endif /* __LINUX_BOOTMEM_INFO_H */