88 строки
3.4 KiB
C
88 строки
3.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef LINUX_CRASH_CORE_H
|
|
#define LINUX_CRASH_CORE_H
|
|
|
|
#include <linux/linkage.h>
|
|
#include <linux/elfcore.h>
|
|
#include <linux/elf.h>
|
|
|
|
#define CRASH_CORE_NOTE_NAME "CORE"
|
|
#define CRASH_CORE_NOTE_HEAD_BYTES ALIGN(sizeof(struct elf_note), 4)
|
|
#define CRASH_CORE_NOTE_NAME_BYTES ALIGN(sizeof(CRASH_CORE_NOTE_NAME), 4)
|
|
#define CRASH_CORE_NOTE_DESC_BYTES ALIGN(sizeof(struct elf_prstatus), 4)
|
|
|
|
/*
|
|
* The per-cpu notes area is a list of notes terminated by a "NULL"
|
|
* note header. For kdump, the code in vmcore.c runs in the context
|
|
* of the second kernel to combine them into one note.
|
|
*/
|
|
#define CRASH_CORE_NOTE_BYTES ((CRASH_CORE_NOTE_HEAD_BYTES * 2) + \
|
|
CRASH_CORE_NOTE_NAME_BYTES + \
|
|
CRASH_CORE_NOTE_DESC_BYTES)
|
|
|
|
#define VMCOREINFO_BYTES PAGE_SIZE
|
|
#define VMCOREINFO_NOTE_NAME "VMCOREINFO"
|
|
#define VMCOREINFO_NOTE_NAME_BYTES ALIGN(sizeof(VMCOREINFO_NOTE_NAME), 4)
|
|
#define VMCOREINFO_NOTE_SIZE ((CRASH_CORE_NOTE_HEAD_BYTES * 2) + \
|
|
VMCOREINFO_NOTE_NAME_BYTES + \
|
|
VMCOREINFO_BYTES)
|
|
|
|
typedef u32 note_buf_t[CRASH_CORE_NOTE_BYTES/4];
|
|
|
|
void crash_update_vmcoreinfo_safecopy(void *ptr);
|
|
void crash_save_vmcoreinfo(void);
|
|
void arch_crash_save_vmcoreinfo(void);
|
|
__printf(1, 2)
|
|
void vmcoreinfo_append_str(const char *fmt, ...);
|
|
phys_addr_t paddr_vmcoreinfo_note(void);
|
|
|
|
#define VMCOREINFO_OSRELEASE(value) \
|
|
vmcoreinfo_append_str("OSRELEASE=%s\n", value)
|
|
#define VMCOREINFO_BUILD_ID(value) \
|
|
vmcoreinfo_append_str("BUILD-ID=%s\n", value)
|
|
#define VMCOREINFO_PAGESIZE(value) \
|
|
vmcoreinfo_append_str("PAGESIZE=%ld\n", value)
|
|
#define VMCOREINFO_SYMBOL(name) \
|
|
vmcoreinfo_append_str("SYMBOL(%s)=%lx\n", #name, (unsigned long)&name)
|
|
#define VMCOREINFO_SYMBOL_ARRAY(name) \
|
|
vmcoreinfo_append_str("SYMBOL(%s)=%lx\n", #name, (unsigned long)name)
|
|
#define VMCOREINFO_SIZE(name) \
|
|
vmcoreinfo_append_str("SIZE(%s)=%lu\n", #name, \
|
|
(unsigned long)sizeof(name))
|
|
#define VMCOREINFO_STRUCT_SIZE(name) \
|
|
vmcoreinfo_append_str("SIZE(%s)=%lu\n", #name, \
|
|
(unsigned long)sizeof(struct name))
|
|
#define VMCOREINFO_OFFSET(name, field) \
|
|
vmcoreinfo_append_str("OFFSET(%s.%s)=%lu\n", #name, #field, \
|
|
(unsigned long)offsetof(struct name, field))
|
|
#define VMCOREINFO_TYPE_OFFSET(name, field) \
|
|
vmcoreinfo_append_str("OFFSET(%s.%s)=%lu\n", #name, #field, \
|
|
(unsigned long)offsetof(name, field))
|
|
#define VMCOREINFO_LENGTH(name, value) \
|
|
vmcoreinfo_append_str("LENGTH(%s)=%lu\n", #name, (unsigned long)value)
|
|
#define VMCOREINFO_NUMBER(name) \
|
|
vmcoreinfo_append_str("NUMBER(%s)=%ld\n", #name, (long)name)
|
|
#define VMCOREINFO_CONFIG(name) \
|
|
vmcoreinfo_append_str("CONFIG_%s=y\n", #name)
|
|
|
|
extern unsigned char *vmcoreinfo_data;
|
|
extern size_t vmcoreinfo_size;
|
|
extern u32 *vmcoreinfo_note;
|
|
|
|
/* raw contents of kernel .notes section */
|
|
extern const void __start_notes __weak;
|
|
extern const void __stop_notes __weak;
|
|
|
|
Elf_Word *append_elf_note(Elf_Word *buf, char *name, unsigned int type,
|
|
void *data, size_t data_len);
|
|
void final_note(Elf_Word *buf);
|
|
|
|
int __init parse_crashkernel(char *cmdline, unsigned long long system_ram,
|
|
unsigned long long *crash_size, unsigned long long *crash_base);
|
|
int parse_crashkernel_high(char *cmdline, unsigned long long system_ram,
|
|
unsigned long long *crash_size, unsigned long long *crash_base);
|
|
int parse_crashkernel_low(char *cmdline, unsigned long long system_ram,
|
|
unsigned long long *crash_size, unsigned long long *crash_base);
|
|
|
|
#endif /* LINUX_CRASH_CORE_H */
|