Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1#ifndef meminit_h
2#define meminit_h
3
4/*
5 * This file is subject to the terms and conditions of the GNU General Public
6 * License. See the file "COPYING" in the main directory of this archive
7 * for more details.
8 */
9
10
11/*
12 * Entries defined so far:
13 * - boot param structure itself
14 * - memory map
15 * - initrd (optional)
16 * - command line string
17 * - kernel code & data
18 * - crash dumping code reserved region
19 * - Kernel memory map built from EFI memory map
20 * - ELF core header
21 * - xen start info if CONFIG_XEN
22 *
23 * More could be added if necessary
24 */
25#define IA64_MAX_RSVD_REGIONS 9
26
27struct rsvd_region {
28 u64 start; /* virtual address of beginning of element */
29 u64 end; /* virtual address of end of element + 1 */
30};
31
32extern struct rsvd_region rsvd_region[IA64_MAX_RSVD_REGIONS + 1];
33extern int num_rsvd_regions;
34
35extern void find_memory (void);
36extern void reserve_memory (void);
37extern void find_initrd (void);
38extern int filter_rsvd_memory (u64 start, u64 end, void *arg);
39extern int filter_memory (u64 start, u64 end, void *arg);
40extern unsigned long efi_memmap_init(u64 *s, u64 *e);
41extern int find_max_min_low_pfn (u64, u64, void *);
42
43extern unsigned long vmcore_find_descriptor_size(unsigned long address);
44extern int reserve_elfcorehdr(u64 *start, u64 *end);
45
46/*
47 * For rounding an address to the next IA64_GRANULE_SIZE or order
48 */
49#define GRANULEROUNDDOWN(n) ((n) & ~(IA64_GRANULE_SIZE-1))
50#define GRANULEROUNDUP(n) (((n)+IA64_GRANULE_SIZE-1) & ~(IA64_GRANULE_SIZE-1))
51
52#ifdef CONFIG_NUMA
53 extern void call_pernode_memory (unsigned long start, unsigned long len, void *func);
54#else
55# define call_pernode_memory(start, len, func) (*func)(start, len, 0)
56#endif
57
58#define IGNORE_PFN0 1 /* XXX fix me: ignore pfn 0 until TLB miss handler is updated... */
59
60extern int register_active_ranges(u64 start, u64 len, int nid);
61
62#ifdef CONFIG_VIRTUAL_MEM_MAP
63# define LARGE_GAP 0x40000000 /* Use virtual mem map if hole is > than this */
64 extern unsigned long VMALLOC_END;
65 extern struct page *vmem_map;
66 extern int find_largest_hole(u64 start, u64 end, void *arg);
67 extern int create_mem_map_page_table(u64 start, u64 end, void *arg);
68 extern int vmemmap_find_next_valid_pfn(int, int);
69#else
70static inline int vmemmap_find_next_valid_pfn(int node, int i)
71{
72 return i + 1;
73}
74#endif
75#endif /* meminit_h */