From ea435467500612636f8f4fb639ff6e76b2496e4b Mon Sep 17 00:00:00 2001
From: Matthew Wilcox <matthew@wil.cx>
Date: Tue, 6 Jan 2009 14:40:39 -0800
Subject: atomic_t: unify all arch definitions

The atomic_t type cannot currently be used in some header files because it
would create an include loop with asm/atomic.h.  Move the type definition
to linux/types.h to break the loop.

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Cc: Huang Ying <ying.huang@intel.com>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 include/asm-frv/atomic.h     |  4 ----
 include/asm-m32r/atomic.h    |  8 +-------
 include/asm-m68k/atomic.h    |  3 +--
 include/asm-mn10300/atomic.h |  9 ---------
 include/asm-xtensa/atomic.h  |  3 +--
 include/linux/types.h        | 10 ++++++++++
 6 files changed, 13 insertions(+), 24 deletions(-)

(limited to 'include')

diff --git a/include/asm-frv/atomic.h b/include/asm-frv/atomic.h
index 46d696b..296c35c 100644
--- a/include/asm-frv/atomic.h
+++ b/include/asm-frv/atomic.h
@@ -35,10 +35,6 @@
 #define smp_mb__before_atomic_inc()	barrier()
 #define smp_mb__after_atomic_inc()	barrier()
 
-typedef struct {
-	int counter;
-} atomic_t;
-
 #define ATOMIC_INIT(i)		{ (i) }
 #define atomic_read(v)		((v)->counter)
 #define atomic_set(v, i)	(((v)->counter) = (i))
diff --git a/include/asm-m32r/atomic.h b/include/asm-m32r/atomic.h
index 3a38ffe..2eed30f 100644
--- a/include/asm-m32r/atomic.h
+++ b/include/asm-m32r/atomic.h
@@ -9,6 +9,7 @@
  *    Copyright (C) 2004  Hirokazu Takata <takata at linux-m32r.org>
  */
 
+#include <linux/types.h>
 #include <asm/assembler.h>
 #include <asm/system.h>
 
@@ -17,13 +18,6 @@
  * resource counting etc..
  */
 
-/*
- * Make sure gcc doesn't try to be clever and move things around
- * on us. We need to use _exactly_ the address the user gave us,
- * not some alias that contains the same information.
- */
-typedef struct { volatile int counter; } atomic_t;
-
 #define ATOMIC_INIT(i)	{ (i) }
 
 /**
diff --git a/include/asm-m68k/atomic.h b/include/asm-m68k/atomic.h
index 4915294..eb0ab9d 100644
--- a/include/asm-m68k/atomic.h
+++ b/include/asm-m68k/atomic.h
@@ -1,7 +1,7 @@
 #ifndef __ARCH_M68K_ATOMIC__
 #define __ARCH_M68K_ATOMIC__
 
-
+#include <linux/types.h>
 #include <asm/system.h>
 
 /*
@@ -13,7 +13,6 @@
  * We do not have SMP m68k systems, so we don't have to deal with that.
  */
 
-typedef struct { int counter; } atomic_t;
 #define ATOMIC_INIT(i)	{ (i) }
 
 #define atomic_read(v)		((v)->counter)
diff --git a/include/asm-mn10300/atomic.h b/include/asm-mn10300/atomic.h
index 27c9690..bc06482 100644
--- a/include/asm-mn10300/atomic.h
+++ b/include/asm-mn10300/atomic.h
@@ -20,15 +20,6 @@
  * resource counting etc..
  */
 
-/*
- * Make sure gcc doesn't try to be clever and move things around
- * on us. We need to use _exactly_ the address the user gave us,
- * not some alias that contains the same information.
- */
-typedef struct {
-	int	counter;
-} atomic_t;
-
 #define ATOMIC_INIT(i)	{ (i) }
 
 #ifdef __KERNEL__
diff --git a/include/asm-xtensa/atomic.h b/include/asm-xtensa/atomic.h
index b3b2354..67ad67b 100644
--- a/include/asm-xtensa/atomic.h
+++ b/include/asm-xtensa/atomic.h
@@ -14,8 +14,7 @@
 #define _XTENSA_ATOMIC_H
 
 #include <linux/stringify.h>
-
-typedef struct { volatile int counter; } atomic_t;
+#include <linux/types.h>
 
 #ifdef __KERNEL__
 #include <asm/processor.h>
diff --git a/include/linux/types.h b/include/linux/types.h
index 121f349..3b864f2 100644
--- a/include/linux/types.h
+++ b/include/linux/types.h
@@ -195,6 +195,16 @@ typedef u32 phys_addr_t;
 
 typedef phys_addr_t resource_size_t;
 
+typedef struct {
+	volatile int counter;
+} atomic_t;
+
+#ifdef CONFIG_64BIT
+typedef struct {
+	volatile long counter;
+} atomic64_t;
+#endif
+
 struct ustat {
 	__kernel_daddr_t	f_tfree;
 	__kernel_ino_t		f_tinode;
-- 
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