| 1 |
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| 2 | #ifndef LINUX_VMCORE_INFO_H
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| 3 | #define LINUX_VMCORE_INFO_H
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| 4 |
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| 5 | #include <linux/linkage.h>
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| 6 | #include <linux/elfcore.h>
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| 7 | #include <linux/elf.h>
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| 8 | #include <uapi/linux/vmcore.h>
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| 9 |
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| 10 | #define CRASH_CORE_NOTE_HEAD_BYTES ALIGN(sizeof(struct elf_note), 4)
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| 11 | #define CRASH_CORE_NOTE_NAME_BYTES ALIGN(sizeof(NN_PRSTATUS), 4)
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| 12 | #define CRASH_CORE_NOTE_DESC_BYTES ALIGN(sizeof(struct elf_prstatus), 4)
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| 13 |
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| 14 | |
| 15 | * The per-cpu notes area is a list of notes terminated by a "NULL"
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| 16 | * note header. For kdump, the code in vmcore.c runs in the context
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| 17 | * of the second kernel to combine them into one note.
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| 18 |
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| 19 | #define CRASH_CORE_NOTE_BYTES ((CRASH_CORE_NOTE_HEAD_BYTES * 2) + \
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| 20 | CRASH_CORE_NOTE_NAME_BYTES + \
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| 21 | CRASH_CORE_NOTE_DESC_BYTES)
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| 22 |
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| 23 | #define VMCOREINFO_BYTES PAGE_SIZE
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| 24 | #define VMCOREINFO_NOTE_NAME "VMCOREINFO"
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| 25 | #define VMCOREINFO_NOTE_NAME_BYTES ALIGN(sizeof(VMCOREINFO_NOTE_NAME), 4)
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| 26 | #define VMCOREINFO_NOTE_SIZE ((CRASH_CORE_NOTE_HEAD_BYTES * 2) + \
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| 27 | VMCOREINFO_NOTE_NAME_BYTES + \
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| 28 | VMCOREINFO_BYTES)
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| 29 |
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| 30 | typedef u32 note_buf_t[CRASH_CORE_NOTE_BYTES/4];
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| 31 |
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| 32 | extern note_buf_t __percpu *crash_notes;
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| 33 |
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| 34 | void crash_update_vmcoreinfo_safecopy(void *ptr);
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| 35 | void crash_save_vmcoreinfo(void);
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| 36 | void arch_crash_save_vmcoreinfo(void);
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| 37 | __printf(1, 2)
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| 38 | void vmcoreinfo_append_str(const char *fmt, ...);
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| 39 | phys_addr_t paddr_vmcoreinfo_note(void);
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| 40 |
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| 41 | #define VMCOREINFO_OSRELEASE(value) \
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| 42 | vmcoreinfo_append_str("OSRELEASE=%s\n", value)
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| 43 | #define VMCOREINFO_BUILD_ID() \
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| 44 | ({ \
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| 45 | static_assert(sizeof(vmlinux_build_id) == 20); \
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| 46 | vmcoreinfo_append_str("BUILD-ID=%20phN\n", vmlinux_build_id); \
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| 47 | })
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| 48 |
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| 49 | #define VMCOREINFO_PAGESIZE(value) \
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| 50 | vmcoreinfo_append_str("PAGESIZE=%ld\n", value)
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| 51 | #define VMCOREINFO_SYMBOL(name) \
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| 52 | vmcoreinfo_append_str("SYMBOL(%s)=%lx\n", #name, (unsigned long)&name)
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| 53 | #define VMCOREINFO_SYMBOL_ARRAY(name) \
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| 54 | vmcoreinfo_append_str("SYMBOL(%s)=%lx\n", #name, (unsigned long)name)
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| 55 | #define VMCOREINFO_SIZE(name) \
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| 56 | vmcoreinfo_append_str("SIZE(%s)=%lu\n", #name, \
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| 57 | (unsigned long)sizeof(name))
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| 58 | #define VMCOREINFO_STRUCT_SIZE(name) \
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| 59 | vmcoreinfo_append_str("SIZE(%s)=%lu\n", #name, \
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| 60 | (unsigned long)sizeof(struct name))
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| 61 | #define VMCOREINFO_OFFSET(name, field) \
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| 62 | vmcoreinfo_append_str("OFFSET(%s.%s)=%lu\n", #name, #field, \
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| 63 | (unsigned long)offsetof(struct name, field))
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| 64 | #define VMCOREINFO_TYPE_OFFSET(name, field) \
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| 65 | vmcoreinfo_append_str("OFFSET(%s.%s)=%lu\n", #name, #field, \
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| 66 | (unsigned long)offsetof(name, field))
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| 67 | #define VMCOREINFO_LENGTH(name, value) \
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| 68 | vmcoreinfo_append_str("LENGTH(%s)=%lu\n", #name, (unsigned long)value)
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| 69 | #define VMCOREINFO_NUMBER(name) \
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| 70 | vmcoreinfo_append_str("NUMBER(%s)=%ld\n", #name, (long)name)
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| 71 | #define VMCOREINFO_CONFIG(name) \
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| 72 | vmcoreinfo_append_str("CONFIG_%s=y\n", #name)
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| 73 |
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| 74 | extern unsigned char *vmcoreinfo_data;
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| 75 | extern size_t vmcoreinfo_size;
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| 76 | extern u32 *vmcoreinfo_note;
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| 77 |
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| 78 | Elf_Word *append_elf_note(Elf_Word *buf, char *name, unsigned int type,
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| 79 | void *data, size_t data_len);
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| 80 | void final_note(Elf_Word *buf);
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| 81 |
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| 82 | #ifdef CONFIG_VMCORE_INFO
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| 83 | void hwerr_log_error_type(enum hwerr_error_type src);
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| 84 | #else
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| 85 | static inline void hwerr_log_error_type(enum hwerr_error_type src) {};
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| 86 | #endif
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| 87 |
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| 88 | #endif
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