nosave: consolidate __nosave_{begin,end} in <asm/sections.h>

The different architectures used their own (and different) declarations:

    extern __visible const void __nosave_begin, __nosave_end;
    extern const void __nosave_begin, __nosave_end;
    extern long __nosave_begin, __nosave_end;

Consolidate them using the first variant in <asm/sections.h>.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

12 files changed, 12 insertions, 31 deletions

diff --git a/arch/arm/kernel/hibernate.c b/arch/arm/kernel/hibernate.c
index bb8b7964864..c4cc50e58c1 100644
--- a/arch/arm/kernel/hibernate.c
+++ b/arch/arm/kernel/hibernate.c
@@ -21,8 +21,7 @@
 #include <asm/idmap.h>
 #include <asm/suspend.h>
 #include <asm/memory.h>
-
-extern const void __nosave_begin, __nosave_end;
+#include <asm/sections.h>
 
 int pfn_is_nosave(unsigned long pfn)
 {
diff --git a/arch/mips/include/asm/suspend.h b/arch/mips/include/asm/suspend.h
deleted file mode 100644
index 3adac3b53d1..00000000000
--- a/arch/mips/include/asm/suspend.h
+++ /dev/null
@@ -1,7 +0,0 @@
-#ifndef __ASM_SUSPEND_H
-#define __ASM_SUSPEND_H
-
-/* References to section boundaries */
-extern const void __nosave_begin, __nosave_end;
-
-#endif /* __ASM_SUSPEND_H */
diff --git a/arch/mips/power/cpu.c b/arch/mips/power/cpu.c
index 521e5963df0..2129e67723f 100644
--- a/arch/mips/power/cpu.c
+++ b/arch/mips/power/cpu.c
@@ -7,7 +7,7 @@
  * Author: Hu Hongbing <huhb@lemote.com>
  *	   Wu Zhangjin <wuzhangjin@gmail.com>
  */
-#include <asm/suspend.h>
+#include <asm/sections.h>
 #include <asm/fpu.h>
 #include <asm/dsp.h>
 
diff --git a/arch/powerpc/kernel/suspend.c b/arch/powerpc/kernel/suspend.c
index 0167d53da30..a531154cc0f 100644
--- a/arch/powerpc/kernel/suspend.c
+++ b/arch/powerpc/kernel/suspend.c
@@ -9,9 +9,7 @@
 
 #include <linux/mm.h>
 #include <asm/page.h>
-
-/* References to section boundaries */
-extern const void __nosave_begin, __nosave_end;
+#include <asm/sections.h>
 
 /*
  *	pfn_is_nosave - check if given pfn is in the 'nosave' section
diff --git a/arch/s390/kernel/suspend.c b/arch/s390/kernel/suspend.c
index a7a7537ce1e..1c4c5accd22 100644
--- a/arch/s390/kernel/suspend.c
+++ b/arch/s390/kernel/suspend.c
@@ -13,14 +13,10 @@
 #include <asm/ipl.h>
 #include <asm/cio.h>
 #include <asm/pci.h>
+#include <asm/sections.h>
 #include "entry.h"
 
 /*
- * References to section boundaries
- */
-extern const void __nosave_begin, __nosave_end;
-
-/*
  * The restore of the saved pages in an hibernation image will set
  * the change and referenced bits in the storage key for each page.
  * Overindication of the referenced bits after an hibernation cycle
diff --git a/arch/sh/include/asm/sections.h b/arch/sh/include/asm/sections.h
index 1b6199740e9..7a99e6af637 100644
--- a/arch/sh/include/asm/sections.h
+++ b/arch/sh/include/asm/sections.h
@@ -3,7 +3,6 @@
 
 #include <asm-generic/sections.h>
 
-extern long __nosave_begin, __nosave_end;
 extern long __machvec_start, __machvec_end;
 extern char __uncached_start, __uncached_end;
 extern char __start_eh_frame[], __stop_eh_frame[];
diff --git a/arch/sparc/power/hibernate.c b/arch/sparc/power/hibernate.c
index 42b0b8ce699..17bd2e167e0 100644
--- a/arch/sparc/power/hibernate.c
+++ b/arch/sparc/power/hibernate.c
@@ -9,11 +9,9 @@
 #include <asm/hibernate.h>
 #include <asm/visasm.h>
 #include <asm/page.h>
+#include <asm/sections.h>
 #include <asm/tlb.h>
 
-/* References to section boundaries */
-extern const void __nosave_begin, __nosave_end;
-
 struct saved_context saved_context;
 
 /*
diff --git a/arch/unicore32/include/mach/pm.h b/arch/unicore32/include/mach/pm.h
index 4dcd34ae194..77b522694e7 100644
--- a/arch/unicore32/include/mach/pm.h
+++ b/arch/unicore32/include/mach/pm.h
@@ -36,8 +36,5 @@ extern int puv3_pm_enter(suspend_state_t state);
 /* Defined in hibernate_asm.S */
 extern int restore_image(pgd_t *resume_pg_dir, struct pbe *restore_pblist);
 
-/* References to section boundaries */
-extern const void __nosave_begin, __nosave_end;
-
 extern struct pbe *restore_pblist;
 #endif
diff --git a/arch/unicore32/kernel/hibernate.c b/arch/unicore32/kernel/hibernate.c
index d75ef8b6cb5..9969ec374ab 100644
--- a/arch/unicore32/kernel/hibernate.c
+++ b/arch/unicore32/kernel/hibernate.c
@@ -18,6 +18,7 @@
 #include <asm/page.h>
 #include <asm/pgtable.h>
 #include <asm/pgalloc.h>
+#include <asm/sections.h>
 #include <asm/suspend.h>
 
 #include "mach/pm.h"
diff --git a/arch/x86/power/hibernate_32.c b/arch/x86/power/hibernate_32.c
index 7d28c885d23..291226b952a 100644
--- a/arch/x86/power/hibernate_32.c
+++ b/arch/x86/power/hibernate_32.c
@@ -13,13 +13,11 @@
 #include <asm/page.h>
 #include <asm/pgtable.h>
 #include <asm/mmzone.h>
+#include <asm/sections.h>
 
 /* Defined in hibernate_asm_32.S */
 extern int restore_image(void);
 
-/* References to section boundaries */
-extern const void __nosave_begin, __nosave_end;
-
 /* Pointer to the temporary resume page tables */
 pgd_t *resume_pg_dir;
 
diff --git a/arch/x86/power/hibernate_64.c b/arch/x86/power/hibernate_64.c
index 35e2bb6c0f3..009947d419a 100644
--- a/arch/x86/power/hibernate_64.c
+++ b/arch/x86/power/hibernate_64.c
@@ -17,11 +17,9 @@
 #include <asm/page.h>
 #include <asm/pgtable.h>
 #include <asm/mtrr.h>
+#include <asm/sections.h>
 #include <asm/suspend.h>
 
-/* References to section boundaries */
-extern __visible const void __nosave_begin, __nosave_end;
-
 /* Defined in hibernate_asm_64.S */
 extern asmlinkage __visible int restore_image(void);
 
diff --git a/include/asm-generic/sections.h b/include/asm-generic/sections.h
index f1a24b5c3b9..b58fd667f87 100644
--- a/include/asm-generic/sections.h
+++ b/include/asm-generic/sections.h
@@ -3,6 +3,8 @@
 
 /* References to section boundaries */
 
+#include <linux/compiler.h>
+
 /*
  * Usage guidelines:
  * _text, _data: architecture specific, don't use them in arch-independent code
@@ -37,6 +39,8 @@ extern char __start_rodata[], __end_rodata[];
 /* Start and end of .ctors section - used for constructor calls. */
 extern char __ctors_start[], __ctors_end[];
 
+extern __visible const void __nosave_begin, __nosave_end;
+
 /* function descriptor handling (if any).  Override
  * in asm/sections.h */
 #ifndef dereference_function_descriptor