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https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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fe74eb2891
This will prevent a compilation failure when CONFIG_CRASH_DUMP is enabled
but CONFIG_CRASH_DM_CRYPT is disabled,
arch/powerpc/kexec/elf_64.c: In function 'elf64_load':
>> arch/powerpc/kexec/elf_64.c:82:23: error: implicit declaration of function 'crash_load_dm_crypt_keys' [-Werror=implicit-function-declaration]
82 | ret = crash_load_dm_crypt_keys(image);
| ^~~~~~~~~~~~~~~~~~~~~~~~
cc1: some warnings being treated as errors
Link: https://lkml.kernel.org/r/20260225060347.718905-3-coxu@redhat.com
Signed-off-by: Coiby Xu <coxu@redhat.com>
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202602120648.RgQALnnI-lkp@intel.com/
Acked-by: Baoquan He <bhe@redhat.com>
Cc: Arnaud Lefebvre <arnaud.lefebvre@clever-cloud.com>
Cc: Christophe Leroy (CS GROUP) <chleroy@kernel.org>
Cc: Dave Young <dyoung@redhat.com>
Cc: Kairui Song <ryncsn@gmail.com>
Cc: Krzysztof Kozlowski <krzk@kernel.org>
Cc: Pingfan Liu <kernelfans@gmail.com>
Cc: Rob Herring <robh@kernel.org>
Cc: Sourabh Jain <sourabhjain@linux.ibm.com>
Cc: Thomas Staudt <tstaudt@de.ibm.com>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
100 lines
2.9 KiB
C
100 lines
2.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef LINUX_CRASH_CORE_H
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#define LINUX_CRASH_CORE_H
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#include <linux/linkage.h>
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#include <linux/elfcore.h>
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#include <linux/elf.h>
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struct kimage;
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struct crash_mem {
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unsigned int max_nr_ranges;
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unsigned int nr_ranges;
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struct range ranges[] __counted_by(max_nr_ranges);
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};
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#ifdef CONFIG_CRASH_DUMP
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int crash_shrink_memory(unsigned long new_size);
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ssize_t crash_get_memory_size(void);
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#ifndef arch_kexec_protect_crashkres
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/*
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* Protection mechanism for crashkernel reserved memory after
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* the kdump kernel is loaded.
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*
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* Provide an empty default implementation here -- architecture
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* code may override this
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*/
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static inline void arch_kexec_protect_crashkres(void) { }
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#endif
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#ifndef arch_kexec_unprotect_crashkres
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static inline void arch_kexec_unprotect_crashkres(void) { }
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#endif
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#ifndef arch_crash_handle_hotplug_event
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static inline void arch_crash_handle_hotplug_event(struct kimage *image, void *arg) { }
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#endif
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int crash_check_hotplug_support(void);
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#ifndef arch_crash_hotplug_support
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static inline int arch_crash_hotplug_support(struct kimage *image, unsigned long kexec_flags)
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{
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return 0;
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}
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#endif
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#ifndef crash_get_elfcorehdr_size
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static inline unsigned int crash_get_elfcorehdr_size(void) { return 0; }
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#endif
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/* Alignment required for elf header segment */
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#define ELF_CORE_HEADER_ALIGN 4096
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extern int crash_exclude_mem_range(struct crash_mem *mem,
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unsigned long long mstart,
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unsigned long long mend);
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extern int crash_prepare_elf64_headers(struct crash_mem *mem, int need_kernel_map,
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void **addr, unsigned long *sz);
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struct kimage;
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struct kexec_segment;
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#define KEXEC_CRASH_HP_NONE 0
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#define KEXEC_CRASH_HP_ADD_CPU 1
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#define KEXEC_CRASH_HP_REMOVE_CPU 2
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#define KEXEC_CRASH_HP_ADD_MEMORY 3
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#define KEXEC_CRASH_HP_REMOVE_MEMORY 4
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#define KEXEC_CRASH_HP_INVALID_CPU -1U
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extern void __crash_kexec(struct pt_regs *regs);
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extern void crash_kexec(struct pt_regs *regs);
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int kexec_should_crash(struct task_struct *p);
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int kexec_crash_loaded(void);
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void crash_save_cpu(struct pt_regs *regs, int cpu);
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extern int kimage_crash_copy_vmcoreinfo(struct kimage *image);
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#else /* !CONFIG_CRASH_DUMP*/
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struct pt_regs;
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struct task_struct;
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struct kimage;
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static inline void __crash_kexec(struct pt_regs *regs) { }
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static inline void crash_kexec(struct pt_regs *regs) { }
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static inline int kexec_should_crash(struct task_struct *p) { return 0; }
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static inline int kexec_crash_loaded(void) { return 0; }
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static inline void crash_save_cpu(struct pt_regs *regs, int cpu) {};
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static inline int kimage_crash_copy_vmcoreinfo(struct kimage *image) { return 0; };
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#endif /* CONFIG_CRASH_DUMP*/
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#ifdef CONFIG_CRASH_DM_CRYPT
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int crash_load_dm_crypt_keys(struct kimage *image);
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ssize_t dm_crypt_keys_read(char *buf, size_t count, u64 *ppos);
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#else
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static inline int crash_load_dm_crypt_keys(struct kimage *image) {return 0; }
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#endif
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#endif /* LINUX_CRASH_CORE_H */
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