/* SPDX-License-Identifier: GPL-2.0 */#ifndef __LINUX_BOOTMEM_INFO_H#define __LINUX_BOOTMEM_INFO_H #include <linux/mm.h> /* * Types for free bootmem stored in page->lru.next. These have to be in * some random range in unsigned long space for debugging purposes. */enum {	MEMORY_HOTPLUG_MIN_BOOTMEM_TYPE = 12,	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 get_page_bootmem(unsigned long info, struct page *page,		      unsigned long type);void put_page_bootmem(struct page *page); /* * 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){	unsigned long magic = page->index; 	/*	 * The reserve_bootmem_region sets the reserved flag on bootmem	 * pages.	 */	VM_BUG_ON_PAGE(page_ref_count(page) != 2, page); 	if (magic == SECTION_INFO || magic == 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 put_page_bootmem(struct page *page){} static inline void get_page_bootmem(unsigned long info, struct page *page,				    unsigned long type){} static inline void free_bootmem_page(struct page *page){	free_reserved_page(page);}#endif #endif /* __LINUX_BOOTMEM_INFO_H */