1
2#ifndef __LINUX_BOOTMEM_INFO_H
3#define __LINUX_BOOTMEM_INFO_H
4
5#include <linux/mm.h>
6
7
8
9
10
11enum {
12 MEMORY_HOTPLUG_MIN_BOOTMEM_TYPE = 12,
13 SECTION_INFO = MEMORY_HOTPLUG_MIN_BOOTMEM_TYPE,
14 MIX_SECTION_INFO,
15 NODE_INFO,
16 MEMORY_HOTPLUG_MAX_BOOTMEM_TYPE = NODE_INFO,
17};
18
19#ifdef CONFIG_HAVE_BOOTMEM_INFO_NODE
20void __init register_page_bootmem_info_node(struct pglist_data *pgdat);
21
22void get_page_bootmem(unsigned long info, struct page *page,
23 unsigned long type);
24void put_page_bootmem(struct page *page);
25
26
27
28
29
30
31static inline void free_bootmem_page(struct page *page)
32{
33 unsigned long magic = (unsigned long)page->freelist;
34
35
36
37
38
39 VM_BUG_ON_PAGE(page_ref_count(page) != 2, page);
40
41 if (magic == SECTION_INFO || magic == MIX_SECTION_INFO)
42 put_page_bootmem(page);
43 else
44 VM_BUG_ON_PAGE(1, page);
45}
46#else
47static inline void register_page_bootmem_info_node(struct pglist_data *pgdat)
48{
49}
50
51static inline void put_page_bootmem(struct page *page)
52{
53}
54
55static inline void get_page_bootmem(unsigned long info, struct page *page,
56 unsigned long type)
57{
58}
59
60static inline void free_bootmem_page(struct page *page)
61{
62 free_reserved_page(page);
63}
64#endif
65
66#endif
67