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Date: Sat, 19 Jun 2010 15:22:35 +0200
From: Andi Kleen <andi@...stfloor.org>
To: ebiederm@...ssion.com, akpm@...ux-foundation.org,
linux-kernel@...r.kernel.org
Subject: [PATCH] Export kexec.h
Export kexec.h
kexec_load is a system call and it needs a header
file with its input arguments.
Export the parts of kexec.h needed for this.
Cc: ebiederm@...ssion.com
Signed-off-by: Andi Kleen <ak@...ux.intel.com>
diff --git a/include/linux/Kbuild b/include/linux/Kbuild
index 2fc8e14..8fd5d09 100644
--- a/include/linux/Kbuild
+++ b/include/linux/Kbuild
@@ -389,3 +389,5 @@ unifdef-y += xfrm.h
objhdr-y += version.h
header-y += wimax.h
header-y += wimax/
+
+unifdef-y += kexec.h
diff --git a/include/linux/kexec.h b/include/linux/kexec.h
index 03e8e8d..f4c5a0e 100644
--- a/include/linux/kexec.h
+++ b/include/linux/kexec.h
@@ -1,8 +1,46 @@
#ifndef LINUX_KEXEC_H
#define LINUX_KEXEC_H
-#ifdef CONFIG_KEXEC
+/* Kexec: one kernel loading another */
+
+#ifdef __KERNEL__
+#include <linux/compiler.h>
#include <linux/types.h>
+#endif
+
+#define KEXEC_ON_CRASH 0x00000001
+#define KEXEC_PRESERVE_CONTEXT 0x00000002
+#define KEXEC_ARCH_MASK 0xffff0000
+
+/* These values match the ELF architecture values.
+ * Unless there is a good reason that should continue to be the case.
+ */
+#define KEXEC_ARCH_DEFAULT ( 0 << 16)
+#define KEXEC_ARCH_386 ( 3 << 16)
+#define KEXEC_ARCH_X86_64 (62 << 16)
+#define KEXEC_ARCH_PPC (20 << 16)
+#define KEXEC_ARCH_PPC64 (21 << 16)
+#define KEXEC_ARCH_IA_64 (50 << 16)
+#define KEXEC_ARCH_ARM (40 << 16)
+#define KEXEC_ARCH_S390 (22 << 16)
+#define KEXEC_ARCH_SH (42 << 16)
+#define KEXEC_ARCH_MIPS_LE (10 << 16)
+#define KEXEC_ARCH_MIPS ( 8 << 16)
+
+#define KEXEC_SEGMENT_MAX 16
+struct kexec_segment {
+ void __user *buf;
+ size_t bufsz;
+#ifdef __KERNEL__
+ unsigned long mem; /* User space sees this as a (void *) ... */
+#else
+ void *mem;
+#endif
+ size_t memsz;
+};
+
+#ifdef __KERNEL__
+#ifdef CONFIG_KEXEC
#include <linux/list.h>
#include <linux/linkage.h>
#include <linux/compat.h>
@@ -57,14 +95,6 @@ typedef unsigned long kimage_entry_t;
#define IND_DONE 0x4
#define IND_SOURCE 0x8
-#define KEXEC_SEGMENT_MAX 16
-struct kexec_segment {
- void __user *buf;
- size_t bufsz;
- unsigned long mem; /* User space sees this as a (void *) ... */
- size_t memsz;
-};
-
#ifdef CONFIG_COMPAT
struct compat_kexec_segment {
compat_uptr_t buf;
@@ -163,25 +193,6 @@ extern struct kimage *kexec_crash_image;
#define kexec_flush_icache_page(page)
#endif
-#define KEXEC_ON_CRASH 0x00000001
-#define KEXEC_PRESERVE_CONTEXT 0x00000002
-#define KEXEC_ARCH_MASK 0xffff0000
-
-/* These values match the ELF architecture values.
- * Unless there is a good reason that should continue to be the case.
- */
-#define KEXEC_ARCH_DEFAULT ( 0 << 16)
-#define KEXEC_ARCH_386 ( 3 << 16)
-#define KEXEC_ARCH_X86_64 (62 << 16)
-#define KEXEC_ARCH_PPC (20 << 16)
-#define KEXEC_ARCH_PPC64 (21 << 16)
-#define KEXEC_ARCH_IA_64 (50 << 16)
-#define KEXEC_ARCH_ARM (40 << 16)
-#define KEXEC_ARCH_S390 (22 << 16)
-#define KEXEC_ARCH_SH (42 << 16)
-#define KEXEC_ARCH_MIPS_LE (10 << 16)
-#define KEXEC_ARCH_MIPS ( 8 << 16)
-
/* List of defined/legal kexec flags */
#ifndef CONFIG_KEXEC_JUMP
#define KEXEC_FLAGS KEXEC_ON_CRASH
@@ -215,4 +226,5 @@ struct task_struct;
static inline void crash_kexec(struct pt_regs *regs) { }
static inline int kexec_should_crash(struct task_struct *p) { return 0; }
#endif /* CONFIG_KEXEC */
+#endif
#endif /* LINUX_KEXEC_H */
--
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