Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1#ifndef LINUX_CRASH_CORE_H
2#define LINUX_CRASH_CORE_H
3
4#include <linux/linkage.h>
5#include <linux/elfcore.h>
6#include <linux/elf.h>
7
8#define CRASH_CORE_NOTE_NAME "CORE"
9#define CRASH_CORE_NOTE_HEAD_BYTES ALIGN(sizeof(struct elf_note), 4)
10#define CRASH_CORE_NOTE_NAME_BYTES ALIGN(sizeof(CRASH_CORE_NOTE_NAME), 4)
11#define CRASH_CORE_NOTE_DESC_BYTES ALIGN(sizeof(struct elf_prstatus), 4)
12
13#define CRASH_CORE_NOTE_BYTES ((CRASH_CORE_NOTE_HEAD_BYTES * 2) + \
14 CRASH_CORE_NOTE_NAME_BYTES + \
15 CRASH_CORE_NOTE_DESC_BYTES)
16
17#define VMCOREINFO_BYTES (4096)
18#define VMCOREINFO_NOTE_NAME "VMCOREINFO"
19#define VMCOREINFO_NOTE_NAME_BYTES ALIGN(sizeof(VMCOREINFO_NOTE_NAME), 4)
20#define VMCOREINFO_NOTE_SIZE ((CRASH_CORE_NOTE_HEAD_BYTES * 2) + \
21 VMCOREINFO_NOTE_NAME_BYTES + \
22 VMCOREINFO_BYTES)
23
24typedef u32 note_buf_t[CRASH_CORE_NOTE_BYTES/4];
25
26void crash_save_vmcoreinfo(void);
27void arch_crash_save_vmcoreinfo(void);
28__printf(1, 2)
29void vmcoreinfo_append_str(const char *fmt, ...);
30phys_addr_t paddr_vmcoreinfo_note(void);
31
32#define VMCOREINFO_OSRELEASE(value) \
33 vmcoreinfo_append_str("OSRELEASE=%s\n", value)
34#define VMCOREINFO_PAGESIZE(value) \
35 vmcoreinfo_append_str("PAGESIZE=%ld\n", value)
36#define VMCOREINFO_SYMBOL(name) \
37 vmcoreinfo_append_str("SYMBOL(%s)=%lx\n", #name, (unsigned long)&name)
38#define VMCOREINFO_SIZE(name) \
39 vmcoreinfo_append_str("SIZE(%s)=%lu\n", #name, \
40 (unsigned long)sizeof(name))
41#define VMCOREINFO_STRUCT_SIZE(name) \
42 vmcoreinfo_append_str("SIZE(%s)=%lu\n", #name, \
43 (unsigned long)sizeof(struct name))
44#define VMCOREINFO_OFFSET(name, field) \
45 vmcoreinfo_append_str("OFFSET(%s.%s)=%lu\n", #name, #field, \
46 (unsigned long)offsetof(struct name, field))
47#define VMCOREINFO_LENGTH(name, value) \
48 vmcoreinfo_append_str("LENGTH(%s)=%lu\n", #name, (unsigned long)value)
49#define VMCOREINFO_NUMBER(name) \
50 vmcoreinfo_append_str("NUMBER(%s)=%ld\n", #name, (long)name)
51#define VMCOREINFO_CONFIG(name) \
52 vmcoreinfo_append_str("CONFIG_%s=y\n", #name)
53
54extern u32 vmcoreinfo_note[VMCOREINFO_NOTE_SIZE/4];
55extern size_t vmcoreinfo_size;
56extern size_t vmcoreinfo_max_size;
57
58Elf_Word *append_elf_note(Elf_Word *buf, char *name, unsigned int type,
59 void *data, size_t data_len);
60void final_note(Elf_Word *buf);
61
62int __init parse_crashkernel(char *cmdline, unsigned long long system_ram,
63 unsigned long long *crash_size, unsigned long long *crash_base);
64int parse_crashkernel_high(char *cmdline, unsigned long long system_ram,
65 unsigned long long *crash_size, unsigned long long *crash_base);
66int parse_crashkernel_low(char *cmdline, unsigned long long system_ram,
67 unsigned long long *crash_size, unsigned long long *crash_base);
68
69#endif /* LINUX_CRASH_CORE_H */