1636 struct mem_section {  struct
1667 #define SECTIONS_PER_ROOT       (PAGE_SIZE / sizeof (struct mem_section))
1677 extern struct mem_section **mem_section;
1679 extern struct mem_section mem_section[NR_SECTION_ROOTS][SECTIONS_PER_ROOT];
1682 static inline unsigned long *section_to_usemap(struct mem_section *ms)  in section_to_usemap()
1687 static inline struct mem_section *__nr_to_section(unsigned long nr)  in __nr_to_section()
1695 	if (!mem_section || !mem_section[root])  in __nr_to_section()
1698 	return &mem_section[root][nr & SECTION_ROOT_MASK];  in __nr_to_section()
1740 static inline struct page *__section_mem_map_addr(struct mem_section *section)  in __section_mem_map_addr()
1747 static inline int present_section(struct mem_section *section)  in present_section()
1757 static inline int valid_section(struct mem_section *section)  in valid_section()
1762 static inline int early_section(struct mem_section *section)  in early_section()
1772 static inline int online_section(struct mem_section *section)  in online_section()
1778 static inline int online_device_section(struct mem_section *section)  in online_device_section()
1785 static inline int online_device_section(struct mem_section *section)  in online_device_section()
1801 static inline struct mem_section *__pfn_to_section(unsigned long pfn)  in __pfn_to_section()
1814 static inline int pfn_section_valid(struct mem_section *ms, unsigned long pfn)  in pfn_section_valid()
1821 static inline int pfn_section_valid(struct mem_section *ms, unsigned long pfn)  in pfn_section_valid()
1841 	struct mem_section *ms;  in pfn_valid()