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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100/* 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>
struct kimage;
struct crash_mem { unsigned int max_nr_ranges; unsigned int nr_ranges; struct range ranges[] __counted_by(max_nr_ranges);};
#ifdef CONFIG_CRASH_DUMP
int crash_shrink_memory(unsigned long new_size);ssize_t crash_get_memory_size(void);
#ifndef arch_kexec_protect_crashkres/* * Protection mechanism for crashkernel reserved memory after * the kdump kernel is loaded. * * Provide an empty default implementation here -- architecture * code may override this */static inline void arch_kexec_protect_crashkres(void) { }#endif
#ifndef arch_kexec_unprotect_crashkresstatic inline void arch_kexec_unprotect_crashkres(void) { }#endif
#ifndef arch_crash_handle_hotplug_eventstatic inline void arch_crash_handle_hotplug_event(struct kimage *image, void *arg) { }#endif
int crash_check_hotplug_support(void);
#ifndef arch_crash_hotplug_supportstatic inline int arch_crash_hotplug_support(struct kimage *image, unsigned long kexec_flags){ return 0;}#endif
#ifndef crash_get_elfcorehdr_sizestatic inline unsigned int crash_get_elfcorehdr_size(void) { return 0; }#endif
/* Alignment required for elf header segment */#define ELF_CORE_HEADER_ALIGN 4096
extern int crash_exclude_mem_range(struct crash_mem *mem, unsigned long long mstart, unsigned long long mend);extern int crash_prepare_elf64_headers(struct crash_mem *mem, int need_kernel_map, void **addr, unsigned long *sz);
struct kimage;struct kexec_segment;
#define KEXEC_CRASH_HP_NONE 0#define KEXEC_CRASH_HP_ADD_CPU 1#define KEXEC_CRASH_HP_REMOVE_CPU 2#define KEXEC_CRASH_HP_ADD_MEMORY 3#define KEXEC_CRASH_HP_REMOVE_MEMORY 4#define KEXEC_CRASH_HP_INVALID_CPU -1U
extern void __crash_kexec(struct pt_regs *regs);extern void crash_kexec(struct pt_regs *regs);int kexec_should_crash(struct task_struct *p);int kexec_crash_loaded(void);void crash_save_cpu(struct pt_regs *regs, int cpu);extern int kimage_crash_copy_vmcoreinfo(struct kimage *image);
#else /* !CONFIG_CRASH_DUMP*/struct pt_regs;struct task_struct;struct kimage;static inline void __crash_kexec(struct pt_regs *regs) { }static inline void crash_kexec(struct pt_regs *regs) { }static inline int kexec_should_crash(struct task_struct *p) { return 0; }static inline int kexec_crash_loaded(void) { return 0; }static inline void crash_save_cpu(struct pt_regs *regs, int cpu) {};static inline int kimage_crash_copy_vmcoreinfo(struct kimage *image) { return 0; };#endif /* CONFIG_CRASH_DUMP*/
#ifdef CONFIG_CRASH_DM_CRYPTint crash_load_dm_crypt_keys(struct kimage *image);ssize_t dm_crypt_keys_read(char *buf, size_t count, u64 *ppos);#elsestatic inline int crash_load_dm_crypt_keys(struct kimage *image) {return 0; }#endif
#endif /* LINUX_CRASH_CORE_H */