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-rw-r--r--include/linux/kexec.h17
1 files changed, 16 insertions, 1 deletions
diff --git a/include/linux/kexec.h b/include/linux/kexec.h
index 696e5ec63f77..8c2c7fcd58ce 100644
--- a/include/linux/kexec.h
+++ b/include/linux/kexec.h
@@ -7,6 +7,8 @@
#include <linux/linkage.h>
#include <linux/compat.h>
#include <linux/ioport.h>
+#include <linux/elfcore.h>
+#include <linux/elf.h>
#include <asm/kexec.h>
/* Verify architecture specific macros are defined */
@@ -31,6 +33,19 @@
#error KEXEC_ARCH not defined
#endif
+#define KEXEC_NOTE_HEAD_BYTES ALIGN(sizeof(struct elf_note), 4)
+#define KEXEC_CORE_NOTE_NAME "CORE"
+#define KEXEC_CORE_NOTE_NAME_BYTES ALIGN(sizeof(KEXEC_CORE_NOTE_NAME), 4)
+#define KEXEC_CORE_NOTE_DESC_BYTES ALIGN(sizeof(struct elf_prstatus), 4)
+/*
+ * The per-cpu notes area is a list of notes terminated by a "NULL"
+ * note header. For kdump, the code in vmcore.c runs in the context
+ * of the second kernel to combine them into one note.
+ */
+#define KEXEC_NOTE_BYTES ( (KEXEC_NOTE_HEAD_BYTES * 2) + \
+ KEXEC_CORE_NOTE_NAME_BYTES + \
+ KEXEC_CORE_NOTE_DESC_BYTES )
+
/*
* This structure is used to hold the arguments that are used when loading
* kernel binaries.
@@ -136,7 +151,7 @@ extern struct kimage *kexec_crash_image;
/* Location of a reserved region to hold the crash kernel.
*/
extern struct resource crashk_res;
-typedef u32 note_buf_t[MAX_NOTE_BYTES/4];
+typedef u32 note_buf_t[KEXEC_NOTE_BYTES/4];
extern note_buf_t *crash_notes;
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