| /* 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_crashkres |
| static inline void arch_kexec_unprotect_crashkres(void) { } |
| #endif |
| |
| |
| |
| #ifndef arch_crash_handle_hotplug_event |
| static inline void arch_crash_handle_hotplug_event(struct kimage *image) { } |
| #endif |
| |
| int crash_check_update_elfcorehdr(void); |
| |
| #ifndef crash_hotplug_cpu_support |
| static inline int crash_hotplug_cpu_support(void) { return 0; } |
| #endif |
| |
| #ifndef crash_hotplug_memory_support |
| static inline int crash_hotplug_memory_support(void) { return 0; } |
| #endif |
| |
| #ifndef crash_get_elfcorehdr_size |
| static 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*/ |
| |
| #endif /* LINUX_CRASH_CORE_H */ |