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_DUMP_H
2#define LINUX_CRASH_DUMP_H
3
4#ifdef CONFIG_CRASH_DUMP
5#include <linux/kexec.h>
6#include <linux/smp_lock.h>
7#include <linux/device.h>
8#include <linux/proc_fs.h>
9
10#define ELFCORE_ADDR_MAX (-1ULL)
11
12#ifdef CONFIG_PROC_VMCORE
13extern unsigned long long elfcorehdr_addr;
14#else
15static const unsigned long long elfcorehdr_addr = ELFCORE_ADDR_MAX;
16#endif
17
18extern ssize_t copy_oldmem_page(unsigned long, char *, size_t,
19 unsigned long, int);
20extern const struct file_operations proc_vmcore_operations;
21extern struct proc_dir_entry *proc_vmcore;
22
23/* Architecture code defines this if there are other possible ELF
24 * machine types, e.g. on bi-arch capable hardware. */
25#ifndef vmcore_elf_check_arch_cross
26#define vmcore_elf_check_arch_cross(x) 0
27#endif
28
29#define vmcore_elf_check_arch(x) (elf_check_arch(x) || vmcore_elf_check_arch_cross(x))
30
31static inline int is_kdump_kernel(void)
32{
33 return (elfcorehdr_addr != ELFCORE_ADDR_MAX) ? 1 : 0;
34}
35#else /* !CONFIG_CRASH_DUMP */
36static inline int is_kdump_kernel(void) { return 0; }
37#endif /* CONFIG_CRASH_DUMP */
38
39extern unsigned long saved_max_pfn;
40#endif /* LINUX_CRASHDUMP_H */