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authorMatthew Wilcox <matthew@wil.cx>2009-01-06 14:40:39 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-01-06 15:59:10 -0800
commitea435467500612636f8f4fb639ff6e76b2496e4b (patch)
treefdf5cb7ca3834f0a4120fb3cce5a631dd2769f26
parentf99ebf0a86de13f77bc4ee349de96db9f2f67f2e (diff)
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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>
-rw-r--r--arch/alpha/include/asm/atomic.h9
-rw-r--r--arch/arm/include/asm/atomic.h3
-rw-r--r--arch/avr32/include/asm/atomic.h2
-rw-r--r--arch/blackfin/include/asm/atomic.h4
-rw-r--r--arch/cris/include/asm/atomic.h4
-rw-r--r--arch/h8300/include/asm/atomic.h3
-rw-r--r--arch/ia64/include/asm/atomic.h6
-rw-r--r--arch/m68knommu/include/asm/atomic.h2
-rw-r--r--arch/mips/include/asm/atomic.h5
-rw-r--r--arch/parisc/include/asm/atomic.h11
-rw-r--r--arch/powerpc/include/asm/atomic.h4
-rw-r--r--arch/s390/include/asm/atomic.h7
-rw-r--r--arch/sh/include/asm/atomic.h7
-rw-r--r--arch/sparc/include/asm/atomic_32.h2
-rw-r--r--arch/sparc/include/asm/atomic_64.h3
-rw-r--r--arch/x86/include/asm/atomic_32.h10
-rw-r--r--arch/x86/include/asm/atomic_64.h18
-rw-r--r--include/asm-frv/atomic.h4
-rw-r--r--include/asm-m32r/atomic.h8
-rw-r--r--include/asm-m68k/atomic.h3
-rw-r--r--include/asm-mn10300/atomic.h9
-rw-r--r--include/asm-xtensa/atomic.h3
-rw-r--r--include/linux/types.h10
23 files changed, 33 insertions, 104 deletions
diff --git a/arch/alpha/include/asm/atomic.h b/arch/alpha/include/asm/atomic.h
index ca88e54..62b3635 100644
--- a/arch/alpha/include/asm/atomic.h
+++ b/arch/alpha/include/asm/atomic.h
@@ -1,6 +1,7 @@
#ifndef _ALPHA_ATOMIC_H
#define _ALPHA_ATOMIC_H
+#include <linux/types.h>
#include <asm/barrier.h>
#include <asm/system.h>
@@ -13,14 +14,6 @@
*/
-/*
- * Counter is volatile to 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;
-typedef struct { volatile long counter; } atomic64_t;
-
#define ATOMIC_INIT(i) ( (atomic_t) { (i) } )
#define ATOMIC64_INIT(i) ( (atomic64_t) { (i) } )
diff --git a/arch/arm/include/asm/atomic.h b/arch/arm/include/asm/atomic.h
index 325f881..ee99723 100644
--- a/arch/arm/include/asm/atomic.h
+++ b/arch/arm/include/asm/atomic.h
@@ -12,10 +12,9 @@
#define __ASM_ARM_ATOMIC_H
#include <linux/compiler.h>
+#include <linux/types.h>
#include <asm/system.h>
-typedef struct { volatile int counter; } atomic_t;
-
#define ATOMIC_INIT(i) { (i) }
#ifdef __KERNEL__
diff --git a/arch/avr32/include/asm/atomic.h b/arch/avr32/include/asm/atomic.h
index 7ef3862..3188151 100644
--- a/arch/avr32/include/asm/atomic.h
+++ b/arch/avr32/include/asm/atomic.h
@@ -14,9 +14,9 @@
#ifndef __ASM_AVR32_ATOMIC_H
#define __ASM_AVR32_ATOMIC_H
+#include <linux/types.h>
#include <asm/system.h>
-typedef struct { volatile int counter; } atomic_t;
#define ATOMIC_INIT(i) { (i) }
#define atomic_read(v) ((v)->counter)
diff --git a/arch/blackfin/include/asm/atomic.h b/arch/blackfin/include/asm/atomic.h
index 7cf5087..25776c1 100644
--- a/arch/blackfin/include/asm/atomic.h
+++ b/arch/blackfin/include/asm/atomic.h
@@ -1,6 +1,7 @@
#ifndef __ARCH_BLACKFIN_ATOMIC__
#define __ARCH_BLACKFIN_ATOMIC__
+#include <linux/types.h>
#include <asm/system.h> /* local_irq_XXX() */
/*
@@ -13,9 +14,6 @@
* Tony Kou (tonyko@lineo.ca) Lineo Inc. 2001
*/
-typedef struct {
- int counter;
-} atomic_t;
#define ATOMIC_INIT(i) { (i) }
#define atomic_read(v) ((v)->counter)
diff --git a/arch/cris/include/asm/atomic.h b/arch/cris/include/asm/atomic.h
index f71ea68..5718dd8 100644
--- a/arch/cris/include/asm/atomic.h
+++ b/arch/cris/include/asm/atomic.h
@@ -4,7 +4,7 @@
#define __ASM_CRIS_ATOMIC__
#include <linux/compiler.h>
-
+#include <linux/types.h>
#include <asm/system.h>
#include <arch/atomic.h>
@@ -13,8 +13,6 @@
* resource counting etc..
*/
-typedef struct { volatile int counter; } atomic_t;
-
#define ATOMIC_INIT(i) { (i) }
#define atomic_read(v) ((v)->counter)
diff --git a/arch/h8300/include/asm/atomic.h b/arch/h8300/include/asm/atomic.h
index b4cf0ea..833186c 100644
--- a/arch/h8300/include/asm/atomic.h
+++ b/arch/h8300/include/asm/atomic.h
@@ -1,12 +1,13 @@
#ifndef __ARCH_H8300_ATOMIC__
#define __ARCH_H8300_ATOMIC__
+#include <linux/types.h>
+
/*
* Atomic operations that C can't guarantee us. Useful for
* resource counting etc..
*/
-typedef struct { int counter; } atomic_t;
#define ATOMIC_INIT(i) { (i) }
#define atomic_read(v) ((v)->counter)
diff --git a/arch/ia64/include/asm/atomic.h b/arch/ia64/include/asm/atomic.h
index 50c2b83..d37292b 100644
--- a/arch/ia64/include/asm/atomic.h
+++ b/arch/ia64/include/asm/atomic.h
@@ -17,12 +17,6 @@
#include <asm/intrinsics.h>
#include <asm/system.h>
-/*
- * On IA-64, counter must always be volatile to ensure that that the
- * memory accesses are ordered.
- */
-typedef struct { volatile __s32 counter; } atomic_t;
-typedef struct { volatile __s64 counter; } atomic64_t;
#define ATOMIC_INIT(i) ((atomic_t) { (i) })
#define ATOMIC64_INIT(i) ((atomic64_t) { (i) })
diff --git a/arch/m68knommu/include/asm/atomic.h b/arch/m68knommu/include/asm/atomic.h
index d5632a3..6bb6748 100644
--- a/arch/m68knommu/include/asm/atomic.h
+++ b/arch/m68knommu/include/asm/atomic.h
@@ -1,6 +1,7 @@
#ifndef __ARCH_M68KNOMMU_ATOMIC__
#define __ARCH_M68KNOMMU_ATOMIC__
+#include <linux/types.h>
#include <asm/system.h>
/*
@@ -12,7 +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/arch/mips/include/asm/atomic.h b/arch/mips/include/asm/atomic.h
index 1232be3..c996c3b 100644
--- a/arch/mips/include/asm/atomic.h
+++ b/arch/mips/include/asm/atomic.h
@@ -15,13 +15,12 @@
#define _ASM_ATOMIC_H
#include <linux/irqflags.h>
+#include <linux/types.h>
#include <asm/barrier.h>
#include <asm/cpu-features.h>
#include <asm/war.h>
#include <asm/system.h>
-typedef struct { volatile int counter; } atomic_t;
-
#define ATOMIC_INIT(i) { (i) }
/*
@@ -404,8 +403,6 @@ static __inline__ int atomic_add_unless(atomic_t *v, int a, int u)
#ifdef CONFIG_64BIT
-typedef struct { volatile long counter; } atomic64_t;
-
#define ATOMIC64_INIT(i) { (i) }
/*
diff --git a/arch/parisc/include/asm/atomic.h b/arch/parisc/include/asm/atomic.h
index 57fcc4a..edbfe25 100644
--- a/arch/parisc/include/asm/atomic.h
+++ b/arch/parisc/include/asm/atomic.h
@@ -155,14 +155,11 @@ static inline unsigned long __cmpxchg_local(volatile void *ptr,
#define cmpxchg64_local(ptr, o, n) __cmpxchg64_local_generic((ptr), (o), (n))
#endif
-/* Note that we need not lock read accesses - aligned word writes/reads
- * are atomic, so a reader never sees unconsistent values.
- *
- * Cache-line alignment would conflict with, for example, linux/module.h
+/*
+ * Note that we need not lock read accesses - aligned word writes/reads
+ * are atomic, so a reader never sees inconsistent values.
*/
-typedef struct { volatile int counter; } atomic_t;
-
/* It's possible to reduce all atomic operations to either
* __atomic_add_return, atomic_set and atomic_read (the latter
* is there only for consistency).
@@ -260,8 +257,6 @@ static __inline__ int atomic_add_unless(atomic_t *v, int a, int u)
#ifdef CONFIG_64BIT
-typedef struct { volatile s64 counter; } atomic64_t;
-
#define ATOMIC64_INIT(i) ((atomic64_t) { (i) })
static __inline__ int
diff --git a/arch/powerpc/include/asm/atomic.h b/arch/powerpc/include/asm/atomic.h
index 499be5b..b401950 100644
--- a/arch/powerpc/include/asm/atomic.h
+++ b/arch/powerpc/include/asm/atomic.h
@@ -5,7 +5,7 @@
* PowerPC atomic operations
*/
-typedef struct { int counter; } atomic_t;
+#include <linux/types.h>
#ifdef __KERNEL__
#include <linux/compiler.h>
@@ -251,8 +251,6 @@ static __inline__ int atomic_dec_if_positive(atomic_t *v)
#ifdef __powerpc64__
-typedef struct { long counter; } atomic64_t;
-
#define ATOMIC64_INIT(i) { (i) }
static __inline__ long atomic64_read(const atomic64_t *v)
diff --git a/arch/s390/include/asm/atomic.h b/arch/s390/include/asm/atomic.h
index 2d18465..de432f2 100644
--- a/arch/s390/include/asm/atomic.h
+++ b/arch/s390/include/asm/atomic.h
@@ -2,6 +2,7 @@
#define __ARCH_S390_ATOMIC__
#include <linux/compiler.h>
+#include <linux/types.h>
/*
* include/asm-s390/atomic.h
@@ -23,9 +24,6 @@
* S390 uses 'Compare And Swap' for atomicity in SMP enviroment
*/
-typedef struct {
- int counter;
-} __attribute__ ((aligned (4))) atomic_t;
#define ATOMIC_INIT(i) { (i) }
#ifdef __KERNEL__
@@ -149,9 +147,6 @@ static __inline__ int atomic_add_unless(atomic_t *v, int a, int u)
#undef __CS_LOOP
#ifdef __s390x__
-typedef struct {
- long long counter;
-} __attribute__ ((aligned (8))) atomic64_t;
#define ATOMIC64_INIT(i) { (i) }
#if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ > 2)
diff --git a/arch/sh/include/asm/atomic.h b/arch/sh/include/asm/atomic.h
index c043ef0..6327ffb 100644
--- a/arch/sh/include/asm/atomic.h
+++ b/arch/sh/include/asm/atomic.h
@@ -7,16 +7,15 @@
*
*/
-typedef struct { volatile int counter; } atomic_t;
+#include <linux/compiler.h>
+#include <linux/types.h>
+#include <asm/system.h>
#define ATOMIC_INIT(i) ( (atomic_t) { (i) } )
#define atomic_read(v) ((v)->counter)
#define atomic_set(v,i) ((v)->counter = (i))
-#include <linux/compiler.h>
-#include <asm/system.h>
-
#if defined(CONFIG_GUSA_RB)
#include <asm/atomic-grb.h>
#elif defined(CONFIG_CPU_SH4A)
diff --git a/arch/sparc/include/asm/atomic_32.h b/arch/sparc/include/asm/atomic_32.h
index 5c944b5..ce46597 100644
--- a/arch/sparc/include/asm/atomic_32.h
+++ b/arch/sparc/include/asm/atomic_32.h
@@ -13,8 +13,6 @@
#include <linux/types.h>
-typedef struct { volatile int counter; } atomic_t;
-
#ifdef __KERNEL__
#define ATOMIC_INIT(i) { (i) }
diff --git a/arch/sparc/include/asm/atomic_64.h b/arch/sparc/include/asm/atomic_64.h
index 5982c5a..a0a7064 100644
--- a/arch/sparc/include/asm/atomic_64.h
+++ b/arch/sparc/include/asm/atomic_64.h
@@ -10,9 +10,6 @@
#include <linux/types.h>
#include <asm/system.h>
-typedef struct { volatile int counter; } atomic_t;
-typedef struct { volatile __s64 counter; } atomic64_t;
-
#define ATOMIC_INIT(i) { (i) }
#define ATOMIC64_INIT(i) { (i) }
diff --git a/arch/x86/include/asm/atomic_32.h b/arch/x86/include/asm/atomic_32.h
index ad5b9f6..85b46fb 100644
--- a/arch/x86/include/asm/atomic_32.h
+++ b/arch/x86/include/asm/atomic_32.h
@@ -2,6 +2,7 @@
#define _ASM_X86_ATOMIC_32_H
#include <linux/compiler.h>
+#include <linux/types.h>
#include <asm/processor.h>
#include <asm/cmpxchg.h>
@@ -10,15 +11,6 @@
* 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) }
/**
diff --git a/arch/x86/include/asm/atomic_64.h b/arch/x86/include/asm/atomic_64.h
index 279d2a7..8c21731 100644
--- a/arch/x86/include/asm/atomic_64.h
+++ b/arch/x86/include/asm/atomic_64.h
@@ -1,25 +1,15 @@
#ifndef _ASM_X86_ATOMIC_64_H
#define _ASM_X86_ATOMIC_64_H
+#include <linux/types.h>
#include <asm/alternative.h>
#include <asm/cmpxchg.h>
-/* atomic_t should be 32 bit signed type */
-
/*
* Atomic operations that C can't guarantee us. Useful for
* 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) }
/**
@@ -191,11 +181,7 @@ static inline int atomic_sub_return(int i, atomic_t *v)
#define atomic_inc_return(v) (atomic_add_return(1, v))
#define atomic_dec_return(v) (atomic_sub_return(1, v))
-/* An 64bit atomic type */
-
-typedef struct {
- long counter;
-} atomic64_t;
+/* The 64-bit atomic type */
#define ATOMIC64_INIT(i) { (i) }
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;