The patch titled
atomic.h: atomic_add_unless as inline. Remove system.h atomic.h circular dependency
has been removed from the -mm tree. Its filename was
atomich-atomic_add_unless-as-inline-remove-systemh-atomich-circular-dependency.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
Subject: atomic.h: atomic_add_unless as inline. Remove system.h atomic.h circular dependency
From: Mathieu Desnoyers <compudj@xxxxxxxxxxxxxxxxxx>
atomic_add_unless as inline. Remove system.h atomic.h circular dependency.
I agree (with Andi Kleen) this typeof is not needed and more error
prone. All the original atomic.h code that uses cmpxchg (which includes
the atomic_add_unless) uses defines instead of inline functions,
probably to circumvent a circular dependency between system.h and
atomic.h on powerpc (which my patch addresses). Therefore, it makes
sense to use inline functions that will provide type checking.
atomic_add_unless as inline. Remove system.h atomic.h circular dependency.
Digging into the FRV architecture shows me that it is also affected by
such a circular dependency. Here is the diff applying this against the
rest of my atomic.h patches.
It applies over the atomic.h standardization patches.
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/asm-alpha/atomic.h | 59 ++++++++++----------
include/asm-arm/atomic.h | 1
include/asm-arm26/atomic.h | 1
include/asm-frv/atomic.h | 91 +++++--------------------------
include/asm-frv/system.h | 70 +++++++++++++++++++++++
include/asm-generic/atomic.h | 17 ++++-
include/asm-i386/atomic.h | 29 +++++----
include/asm-ia64/atomic.h | 59 ++++++++++----------
include/asm-m32r/atomic.h | 23 +++++--
include/asm-m68k/atomic.h | 31 +++++-----
include/asm-m68knommu/atomic.h | 25 +++++---
include/asm-mips/atomic.h | 46 ++++++++++-----
include/asm-parisc/atomic.h | 47 ++++++++++------
include/asm-powerpc/atomic.h | 1
include/asm-ppc/system.h | 1
include/asm-sparc64/atomic.h | 59 ++++++++++----------
include/asm-x86_64/atomic.h | 59 ++++++++++----------
include/asm-xtensa/atomic.h | 23 +++++--
18 files changed, 360 insertions(+), 282 deletions(-)
diff -puN include/asm-alpha/atomic.h~atomich-atomic_add_unless-as-inline-remove-systemh-atomich-circular-dependency include/asm-alpha/atomic.h
--- a/include/asm-alpha/atomic.h~atomich-atomic_add_unless-as-inline-remove-systemh-atomich-circular-dependency
+++ a/include/asm-alpha/atomic.h
@@ -2,6 +2,7 @@
#define _ALPHA_ATOMIC_H
#include <asm/barrier.h>
+#include <asm/system.h>
/*
* Atomic operations that C can't guarantee us. Useful for
@@ -190,20 +191,21 @@ static __inline__ long atomic64_sub_retu
* Atomically adds @a to @v, so long as it was not @u.
* Returns non-zero if @v was not @u, and zero otherwise.
*/
-#define atomic_add_unless(v, a, u) \
-({ \
- __typeof__((v)->counter) c, old; \
- c = atomic_read(v); \
- for (;;) { \
- if (unlikely(c == (u))) \
- break; \
- old = atomic_cmpxchg((v), c, c + (a)); \
- if (likely(old == c)) \
- break; \
- c = old; \
- } \
- c != (u); \
-})
+static __inline__ int atomic_add_unless(atomic_t *v, int a, int u)
+{
+ int c, old;
+ c = atomic_read(v);
+ for (;;) {
+ if (unlikely(c == (u)))
+ break;
+ old = atomic_cmpxchg((v), c, c + (a));
+ if (likely(old == c))
+ break;
+ c = old;
+ }
+ return c != (u);
+}
+
#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
/**
@@ -215,20 +217,21 @@ static __inline__ long atomic64_sub_retu
* Atomically adds @a to @v, so long as it was not @u.
* Returns non-zero if @v was not @u, and zero otherwise.
*/
-#define atomic64_add_unless(v, a, u) \
-({ \
- __typeof__((v)->counter) c, old; \
- c = atomic64_read(v); \
- for (;;) { \
- if (unlikely(c == (u))) \
- break; \
- old = atomic64_cmpxchg((v), c, c + (a)); \
- if (likely(old == c)) \
- break; \
- c = old; \
- } \
- c != (u); \
-})
+static __inline__ int atomic64_add_unless(atomic64_t *v, long a, long u)
+{
+ long c, old;
+ c = atomic64_read(v);
+ for (;;) {
+ if (unlikely(c == (u)))
+ break;
+ old = atomic64_cmpxchg((v), c, c + (a));
+ if (likely(old == c))
+ break;
+ c = old;
+ }
+ return c != (u);
+}
+
#define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1, 0)
#define atomic_add_negative(a, v) (atomic_add_return((a), (v)) < 0)
diff -puN include/asm-arm/atomic.h~atomich-atomic_add_unless-as-inline-remove-systemh-atomich-circular-dependency include/asm-arm/atomic.h
--- a/include/asm-arm/atomic.h~atomich-atomic_add_unless-as-inline-remove-systemh-atomich-circular-dependency
+++ a/include/asm-arm/atomic.h
@@ -12,6 +12,7 @@
#define __ASM_ARM_ATOMIC_H
#include <linux/compiler.h>
+#include <asm/system.h>
typedef struct { volatile int counter; } atomic_t;
diff -puN include/asm-arm26/atomic.h~atomich-atomic_add_unless-as-inline-remove-systemh-atomich-circular-dependency include/asm-arm26/atomic.h
--- a/include/asm-arm26/atomic.h~atomich-atomic_add_unless-as-inline-remove-systemh-atomich-circular-dependency
+++ a/include/asm-arm26/atomic.h
@@ -20,7 +20,6 @@
#ifndef __ASM_ARM_ATOMIC_H
#define __ASM_ARM_ATOMIC_H
-
#ifdef CONFIG_SMP
#error SMP is NOT supported
#endif
diff -puN include/asm-frv/atomic.h~atomich-atomic_add_unless-as-inline-remove-systemh-atomich-circular-dependency include/asm-frv/atomic.h
--- a/include/asm-frv/atomic.h~atomich-atomic_add_unless-as-inline-remove-systemh-atomich-circular-dependency
+++ a/include/asm-frv/atomic.h
@@ -16,6 +16,7 @@
#include <linux/types.h>
#include <asm/spr-regs.h>
+#include <asm/system.h>
#ifdef CONFIG_SMP
#error not SMP safe
@@ -258,85 +259,23 @@ extern uint32_t __xchg_32(uint32_t i, vo
#define tas(ptr) (xchg((ptr), 1))
-/*****************************************************************************/
-/*
- * compare and conditionally exchange value with memory
- * - if (*ptr == test) then orig = *ptr; *ptr = test;
- * - if (*ptr != test) then orig = *ptr;
- */
-#ifndef CONFIG_FRV_OUTOFLINE_ATOMIC_OPS
-
-#define cmpxchg(ptr, test, new) \
-({ \
- __typeof__(ptr) __xg_ptr = (ptr); \
- __typeof__(*(ptr)) __xg_orig, __xg_tmp; \
- __typeof__(*(ptr)) __xg_test = (test); \
- __typeof__(*(ptr)) __xg_new = (new); \
- \
- switch (sizeof(__xg_orig)) { \
- case 4: \
- asm volatile( \
- "0: \n" \
- " orcc gr0,gr0,gr0,icc3 \n" \
- " ckeq icc3,cc7 \n" \
- " ld.p %M0,%1 \n" \
- " orcr cc7,cc7,cc3 \n" \
- " sub%I4cc %1,%4,%2,icc0 \n" \
- " bne icc0,#0,1f \n" \
- " cst.p %3,%M0 ,cc3,#1 \n" \
- " corcc gr29,gr29,gr0 ,cc3,#1 \n" \
- " beq icc3,#0,0b \n" \
- "1: \n" \
- : "+U"(*__xg_ptr), "=&r"(__xg_orig), "=&r"(__xg_tmp) \
- : "r"(__xg_new), "NPr"(__xg_test) \
- : "memory", "cc7", "cc3", "icc3", "icc0" \
- ); \
- break; \
- \
- default: \
- __xg_orig = 0; \
- asm volatile("break"); \
- break; \
- } \
- \
- __xg_orig; \
-})
-
-#else
-
-extern uint32_t __cmpxchg_32(uint32_t *v, uint32_t test, uint32_t new);
-
-#define cmpxchg(ptr, test, new) \
-({ \
- __typeof__(ptr) __xg_ptr = (ptr); \
- __typeof__(*(ptr)) __xg_orig; \
- __typeof__(*(ptr)) __xg_test = (test); \
- __typeof__(*(ptr)) __xg_new = (new); \
- \
- switch (sizeof(__xg_orig)) { \
- case 4: __xg_orig = __cmpxchg_32(__xg_ptr, __xg_test, __xg_new); break; \
- default: \
- __xg_orig = 0; \
- asm volatile("break"); \
- break; \
- } \
- \
- __xg_orig; \
-})
-
-#endif
-
#define atomic_cmpxchg(v, old, new) (cmpxchg(&((v)->counter), old, new))
#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
-#define atomic_add_unless(v, a, u) \
-({ \
- int c, old; \
- c = atomic_read(v); \
- while (c != (u) && (old = atomic_cmpxchg((v), c, c + (a))) != c) \
- c = old; \
- c != (u); \
-})
+static __inline__ int atomic_add_unless(atomic_t *v, int a, int u)
+{
+ int c, old;
+ c = atomic_read(v);
+ for (;;) {
+ if (unlikely(c == (u)))
+ break;
+ old = atomic_cmpxchg((v), c, c + (a));
+ if (likely(old == c))
+ break;
+ c = old;
+ }
+ return c != (u);
+}
#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
diff -puN include/asm-frv/system.h~atomich-atomic_add_unless-as-inline-remove-systemh-atomich-circular-dependency include/asm-frv/system.h
--- a/include/asm-frv/system.h~atomich-atomic_add_unless-as-inline-remove-systemh-atomich-circular-dependency
+++ a/include/asm-frv/system.h
@@ -13,7 +13,6 @@
#define _ASM_SYSTEM_H
#include <linux/linkage.h>
-#include <asm/atomic.h>
struct thread_struct;
@@ -197,4 +196,73 @@ extern void free_initmem(void);
#define arch_align_stack(x) (x)
+/*****************************************************************************/
+/*
+ * compare and conditionally exchange value with memory
+ * - if (*ptr == test) then orig = *ptr; *ptr = test;
+ * - if (*ptr != test) then orig = *ptr;
+ */
+#ifndef CONFIG_FRV_OUTOFLINE_ATOMIC_OPS
+
+#define cmpxchg(ptr, test, new) \
+({ \
+ __typeof__(ptr) __xg_ptr = (ptr); \
+ __typeof__(*(ptr)) __xg_orig, __xg_tmp; \
+ __typeof__(*(ptr)) __xg_test = (test); \
+ __typeof__(*(ptr)) __xg_new = (new); \
+ \
+ switch (sizeof(__xg_orig)) { \
+ case 4: \
+ asm volatile( \
+ "0: \n" \
+ " orcc gr0,gr0,gr0,icc3 \n" \
+ " ckeq icc3,cc7 \n" \
+ " ld.p %M0,%1 \n" \
+ " orcr cc7,cc7,cc3 \n" \
+ " sub%I4cc %1,%4,%2,icc0 \n" \
+ " bne icc0,#0,1f \n" \
+ " cst.p %3,%M0 ,cc3,#1 \n" \
+ " corcc gr29,gr29,gr0 ,cc3,#1 \n" \
+ " beq icc3,#0,0b \n" \
+ "1: \n" \
+ : "+U"(*__xg_ptr), "=&r"(__xg_orig), "=&r"(__xg_tmp) \
+ : "r"(__xg_new), "NPr"(__xg_test) \
+ : "memory", "cc7", "cc3", "icc3", "icc0" \
+ ); \
+ break; \
+ \
+ default: \
+ __xg_orig = 0; \
+ asm volatile("break"); \
+ break; \
+ } \
+ \
+ __xg_orig; \
+})
+
+#else
+
+extern uint32_t __cmpxchg_32(uint32_t *v, uint32_t test, uint32_t new);
+
+#define cmpxchg(ptr, test, new) \
+({ \
+ __typeof__(ptr) __xg_ptr = (ptr); \
+ __typeof__(*(ptr)) __xg_orig; \
+ __typeof__(*(ptr)) __xg_test = (test); \
+ __typeof__(*(ptr)) __xg_new = (new); \
+ \
+ switch (sizeof(__xg_orig)) { \
+ case 4: __xg_orig = __cmpxchg_32(__xg_ptr, __xg_test, __xg_new); break; \
+ default: \
+ __xg_orig = 0; \
+ asm volatile("break"); \
+ break; \
+ } \
+ \
+ __xg_orig; \
+})
+
+#endif
+
+
#endif /* _ASM_SYSTEM_H */
diff -puN include/asm-generic/atomic.h~atomich-atomic_add_unless-as-inline-remove-systemh-atomich-circular-dependency include/asm-generic/atomic.h
--- a/include/asm-generic/atomic.h~atomich-atomic_add_unless-as-inline-remove-systemh-atomich-circular-dependency
+++ a/include/asm-generic/atomic.h
@@ -9,7 +9,6 @@
*/
#include <asm/types.h>
-#include <asm/system.h>
/*
* Suppport for atomic_long_t
@@ -123,8 +122,12 @@ static inline long atomic_long_dec_retur
return (long)atomic64_dec_return(v);
}
-#define atomic_long_add_unless(l, a, u) \
- atomic64_add_unless((atomic64_t *)(l), (a), (u))
+static inline long atomic_long_add_unless(atomic_long_t *l, long a, long u)
+{
+ atomic64_t *v = (atomic64_t *)l;
+
+ return (long)atomic64_add_unless(v, a, u);
+}
#define atomic_long_inc_not_zero(l) atomic64_inc_not_zero((atomic64_t *)(l))
@@ -236,8 +239,12 @@ static inline long atomic_long_dec_retur
return (long)atomic_dec_return(v);
}
-#define atomic_long_add_unless(l, a, u) \
- atomic_add_unless((atomic_t *)(l), (a), (u))
+static inline long atomic_long_add_unless(atomic_long_t *l, long a, long u)
+{
+ atomic_t *v = (atomic_t *)l;
+
+ return (long)atomic_add_unless(v, a, u);
+}
#define atomic_long_inc_not_zero(l) atomic_inc_not_zero((atomic_t *)(l))
diff -puN include/asm-i386/atomic.h~atomich-atomic_add_unless-as-inline-remove-systemh-atomich-circular-dependency include/asm-i386/atomic.h
--- a/include/asm-i386/atomic.h~atomich-atomic_add_unless-as-inline-remove-systemh-atomich-circular-dependency
+++ a/include/asm-i386/atomic.h
@@ -219,20 +219,21 @@ static __inline__ int atomic_sub_return(
* Atomically adds @a to @v, so long as @v was not already @u.
* Returns non-zero if @v was not @u, and zero otherwise.
*/
-#define atomic_add_unless(v, a, u) \
-({ \
- __typeof__((v)->counter) c, old; \
- c = atomic_read(v); \
- for (;;) { \
- if (unlikely(c == (u))) \
- break; \
- old = atomic_cmpxchg((v), c, c + (a)); \
- if (likely(old == c)) \
- break; \
- c = old; \
- } \
- c != (u); \
-})
+static __inline__ int atomic_add_unless(atomic_t *v, int a, int u)
+{
+ int c, old;
+ c = atomic_read(v);
+ for (;;) {
+ if (unlikely(c == (u)))
+ break;
+ old = atomic_cmpxchg((v), c, c + (a));
+ if (likely(old == c))
+ break;
+ c = old;
+ }
+ return c != (u);
+}
+
#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
#define atomic_inc_return(v) (atomic_add_return(1,v))
diff -puN include/asm-ia64/atomic.h~atomich-atomic_add_unless-as-inline-remove-systemh-atomich-circular-dependency include/asm-ia64/atomic.h
--- a/include/asm-ia64/atomic.h~atomich-atomic_add_unless-as-inline-remove-systemh-atomich-circular-dependency
+++ a/include/asm-ia64/atomic.h
@@ -15,6 +15,7 @@
#include <linux/types.h>
#include <asm/intrinsics.h>
+#include <asm/system.h>
/*
* On IA-64, counter must always be volatile to ensure that that the
@@ -95,36 +96,38 @@ ia64_atomic64_sub (__s64 i, atomic64_t *
(cmpxchg(&((v)->counter), old, new))
#define atomic64_xchg(v, new) (xchg(&((v)->counter), new))
-#define atomic_add_unless(v, a, u) \
-({ \
- __typeof__(v->counter) c, old; \
- c = atomic_read(v); \
- for (;;) { \
- if (unlikely(c == (u))) \
- break; \
- old = atomic_cmpxchg((v), c, c + (a)); \
- if (likely(old == c)) \
- break; \
- c = old; \
- } \
- c != (u); \
-})
+static __inline__ int atomic_add_unless(atomic_t *v, int a, int u)
+{
+ int c, old;
+ c = atomic_read(v);
+ for (;;) {
+ if (unlikely(c == (u)))
+ break;
+ old = atomic_cmpxchg((v), c, c + (a));
+ if (likely(old == c))
+ break;
+ c = old;
+ }
+ return c != (u);
+}
+
#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
-#define atomic64_add_unless(v, a, u) \
-({ \
- __typeof__(v->counter) c, old; \
- c = atomic64_read(v); \
- for (;;) { \
- if (unlikely(c == (u))) \
- break; \
- old = atomic64_cmpxchg((v), c, c + (a)); \
- if (likely(old == c)) \
- break; \
- c = old; \
- } \
- c != (u); \
-})
+static __inline__ int atomic64_add_unless(atomic64_t *v, long a, long u)
+{
+ long c, old;
+ c = atomic64_read(v);
+ for (;;) {
+ if (unlikely(c == (u)))
+ break;
+ old = atomic64_cmpxchg((v), c, c + (a));
+ if (likely(old == c))
+ break;
+ c = old;
+ }
+ return c != (u);
+}
+
#define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1, 0)
#define atomic_add_return(i,v) \
diff -puN include/asm-m32r/atomic.h~atomich-atomic_add_unless-as-inline-remove-systemh-atomich-circular-dependency include/asm-m32r/atomic.h
--- a/include/asm-m32r/atomic.h~atomich-atomic_add_unless-as-inline-remove-systemh-atomich-circular-dependency
+++ a/include/asm-m32r/atomic.h
@@ -253,14 +253,21 @@ static __inline__ int atomic_dec_return(
* Atomically adds @a to @v, so long as it was not @u.
* Returns non-zero if @v was not @u, and zero otherwise.
*/
-#define atomic_add_unless(v, a, u) \
-({ \
- int c, old; \
- c = atomic_read(v); \
- while (c != (u) && (old = atomic_cmpxchg((v), c, c + (a))) != c) \
- c = old; \
- c != (u); \
-})
+static __inline__ int atomic_add_unless(atomic_t *v, int a, int u)
+{
+ int c, old;
+ c = atomic_read(v);
+ for (;;) {
+ if (unlikely(c == (u)))
+ break;
+ old = atomic_cmpxchg((v), c, c + (a));
+ if (likely(old == c))
+ break;
+ c = old;
+ }
+ return c != (u);
+}
+
#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
static __inline__ void atomic_clear_mask(unsigned long mask, atomic_t *addr)
diff -puN include/asm-m68k/atomic.h~atomich-atomic_add_unless-as-inline-remove-systemh-atomich-circular-dependency include/asm-m68k/atomic.h
--- a/include/asm-m68k/atomic.h~atomich-atomic_add_unless-as-inline-remove-systemh-atomich-circular-dependency
+++ a/include/asm-m68k/atomic.h
@@ -2,7 +2,7 @@
#define __ARCH_M68K_ATOMIC__
-#include <asm/system.h> /* local_irq_XXX() */
+#include <asm/system.h>
/*
* Atomic operations that C can't guarantee us. Useful for
@@ -170,20 +170,21 @@ static inline void atomic_set_mask(unsig
__asm__ __volatile__("orl %1,%0" : "+m" (*v) : "id" (mask));
}
-#define atomic_add_unless(v, a, u) \
-({ \
- int c, old; \
- c = atomic_read(v); \
- for (;;) { \
- if (unlikely(c == (u))) \
- break; \
- old = atomic_cmpxchg((v), c, c + (a)); \
- if (likely(old == c)) \
- break; \
- c = old; \
- } \
- c != (u); \
-})
+static __inline__ int atomic_add_unless(atomic_t *v, int a, int u)
+{
+ int c, old;
+ c = atomic_read(v);
+ for (;;) {
+ if (unlikely(c == (u)))
+ break;
+ old = atomic_cmpxchg((v), c, c + (a));
+ if (likely(old == c))
+ break;
+ c = old;
+ }
+ return c != (u);
+}
+
#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
/* Atomic operations are already serializing */
diff -puN include/asm-m68knommu/atomic.h~atomich-atomic_add_unless-as-inline-remove-systemh-atomich-circular-dependency include/asm-m68knommu/atomic.h
--- a/include/asm-m68knommu/atomic.h~atomich-atomic_add_unless-as-inline-remove-systemh-atomich-circular-dependency
+++ a/include/asm-m68knommu/atomic.h
@@ -1,7 +1,7 @@
#ifndef __ARCH_M68KNOMMU_ATOMIC__
#define __ARCH_M68KNOMMU_ATOMIC__
-#include <asm/system.h> /* local_irq_XXX() */
+#include <asm/system.h>
/*
* Atomic operations that C can't guarantee us. Useful for
@@ -131,14 +131,21 @@ static inline int atomic_sub_return(int
#define atomic_cmpxchg(v, o, n) ((int)cmpxchg(&((v)->counter), (o), (n)))
#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
-#define atomic_add_unless(v, a, u) \
-({ \
- int c, old; \
- c = atomic_read(v); \
- while (c != (u) && (old = atomic_cmpxchg((v), c, c + (a))) != c) \
- c = old; \
- c != (u); \
-})
+static __inline__ int atomic_add_unless(atomic_t *v, int a, int u)
+{
+ int c, old;
+ c = atomic_read(v);
+ for (;;) {
+ if (unlikely(c == (u)))
+ break;
+ old = atomic_cmpxchg((v), c, c + (a));
+ if (likely(old == c))
+ break;
+ c = old;
+ }
+ return c != (u);
+}
+
#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
#define atomic_dec_return(v) atomic_sub_return(1,(v))
diff -puN include/asm-mips/atomic.h~atomich-atomic_add_unless-as-inline-remove-systemh-atomich-circular-dependency include/asm-mips/atomic.h
--- a/include/asm-mips/atomic.h~atomich-atomic_add_unless-as-inline-remove-systemh-atomich-circular-dependency
+++ a/include/asm-mips/atomic.h
@@ -18,6 +18,7 @@
#include <asm/barrier.h>
#include <asm/cpu-features.h>
#include <asm/war.h>
+#include <asm/system.h>
typedef struct { volatile int counter; } atomic_t;
@@ -318,14 +319,20 @@ static __inline__ int atomic_sub_if_posi
* Atomically adds @a to @v, so long as it was not @u.
* Returns non-zero if @v was not @u, and zero otherwise.
*/
-#define atomic_add_unless(v, a, u) \
-({ \
- __typeof__((v)->counter) c, old; \
- c = atomic_read(v); \
- while (c != (u) && (old = atomic_cmpxchg((v), c, c + (a))) != c) \
- c = old; \
- c != (u); \
-})
+static __inline__ int atomic_add_unless(atomic_t *v, int a, int u)
+{
+ int c, old;
+ c = atomic_read(v);
+ for (;;) {
+ if (unlikely(c == (u)))
+ break;
+ old = atomic_cmpxchg((v), c, c + (a));
+ if (likely(old == c))
+ break;
+ c = old;
+ }
+ return c != (u);
+}
#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
#define atomic_dec_return(v) atomic_sub_return(1,(v))
@@ -694,14 +701,21 @@ static __inline__ long atomic64_sub_if_p
* Atomically adds @a to @v, so long as it was not @u.
* Returns non-zero if @v was not @u, and zero otherwise.
*/
-#define atomic64_add_unless(v, a, u) \
-({ \
- __typeof__((v)->counter) c, old; \
- c = atomic_read(v); \
- while (c != (u) && (old = atomic64_cmpxchg((v), c, c + (a))) != c) \
- c = old; \
- c != (u); \
-})
+static __inline__ int atomic64_add_unless(atomic64_t *v, long a, long u)
+{
+ long c, old;
+ c = atomic64_read(v);
+ for (;;) {
+ if (unlikely(c == (u)))
+ break;
+ old = atomic64_cmpxchg((v), c, c + (a));
+ if (likely(old == c))
+ break;
+ c = old;
+ }
+ return c != (u);
+}
+
#define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1, 0)
#define atomic64_dec_return(v) atomic64_sub_return(1,(v))
diff -puN include/asm-parisc/atomic.h~atomich-atomic_add_unless-as-inline-remove-systemh-atomich-circular-dependency include/asm-parisc/atomic.h
--- a/include/asm-parisc/atomic.h~atomich-atomic_add_unless-as-inline-remove-systemh-atomich-circular-dependency
+++ a/include/asm-parisc/atomic.h
@@ -6,6 +6,7 @@
#define _ASM_PARISC_ATOMIC_H_
#include <linux/types.h>
+#include <asm/system.h>
/*
* Atomic operations that C can't guarantee us. Useful for
@@ -174,14 +175,21 @@ static __inline__ int atomic_read(const
* Atomically adds @a to @v, so long as it was not @u.
* Returns non-zero if @v was not @u, and zero otherwise.
*/
-#define atomic_add_unless(v, a, u) \
-({ \
- __typeof__((v)->counter) c, old; \
- c = atomic_read(v); \
- while (c != (u) && (old = atomic_cmpxchg((v), c, c + (a))) != c) \
- c = old; \
- c != (u); \
-})
+static __inline__ int atomic_add_unless(atomic_t *v, int a, int u)
+{
+ int c, old;
+ c = atomic_read(v);
+ for (;;) {
+ if (unlikely(c == (u)))
+ break;
+ old = atomic_cmpxchg((v), c, c + (a));
+ if (likely(old == c))
+ break;
+ c = old;
+ }
+ return c != (u);
+}
+
#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
#define atomic_add(i,v) ((void)(__atomic_add_return( ((int)i),(v))))
@@ -283,14 +291,21 @@ atomic64_read(const atomic64_t *v)
* Atomically adds @a to @v, so long as it was not @u.
* Returns non-zero if @v was not @u, and zero otherwise.
*/
-#define atomic64_add_unless(v, a, u) \
-({ \
- __typeof__((v)->counter) c, old; \
- c = atomic64_read(v); \
- while (c != (u) && (old = atomic64_cmpxchg((v), c, c + (a))) != c) \
- c = old; \
- c != (u); \
-})
+static __inline__ int atomic64_add_unless(atomic64_t *v, long a, long u)
+{
+ long c, old;
+ c = atomic64_read(v);
+ for (;;) {
+ if (unlikely(c == (u)))
+ break;
+ old = atomic64_cmpxchg((v), c, c + (a));
+ if (likely(old == c))
+ break;
+ c = old;
+ }
+ return c != (u);
+}
+
#define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1, 0)
#endif /* CONFIG_64BIT */
diff -puN include/asm-powerpc/atomic.h~atomich-atomic_add_unless-as-inline-remove-systemh-atomich-circular-dependency include/asm-powerpc/atomic.h
--- a/include/asm-powerpc/atomic.h~atomich-atomic_add_unless-as-inline-remove-systemh-atomich-circular-dependency
+++ a/include/asm-powerpc/atomic.h
@@ -11,6 +11,7 @@ typedef struct { volatile int counter; }
#include <linux/compiler.h>
#include <asm/synch.h>
#include <asm/asm-compat.h>
+#include <asm/system.h>
#define ATOMIC_INIT(i) { (i) }
diff -puN include/asm-ppc/system.h~atomich-atomic_add_unless-as-inline-remove-systemh-atomich-circular-dependency include/asm-ppc/system.h
--- a/include/asm-ppc/system.h~atomich-atomic_add_unless-as-inline-remove-systemh-atomich-circular-dependency
+++ a/include/asm-ppc/system.h
@@ -6,7 +6,6 @@
#include <linux/kernel.h>
-#include <asm/atomic.h>
#include <asm/hw_irq.h>
/*
diff -puN include/asm-sparc64/atomic.h~atomich-atomic_add_unless-as-inline-remove-systemh-atomich-circular-dependency include/asm-sparc64/atomic.h
--- a/include/asm-sparc64/atomic.h~atomich-atomic_add_unless-as-inline-remove-systemh-atomich-circular-dependency
+++ a/include/asm-sparc64/atomic.h
@@ -9,6 +9,7 @@
#define __ARCH_SPARC64_ATOMIC__
#include <linux/types.h>
+#include <asm/system.h>
typedef struct { volatile int counter; } atomic_t;
typedef struct { volatile __s64 counter; } atomic64_t;
@@ -73,40 +74,42 @@ extern int atomic64_sub_ret(int, atomic6
#define atomic_cmpxchg(v, o, n) (cmpxchg(&((v)->counter), (o), (n)))
#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
-#define atomic_add_unless(v, a, u) \
-({ \
- __typeof__((v)->counter) c, old; \
- c = atomic_read(v); \
- for (;;) { \
- if (unlikely(c == (u))) \
- break; \
- old = atomic_cmpxchg((v), c, c + (a)); \
- if (likely(old == c)) \
- break; \
- c = old; \
- } \
- likely(c != (u)); \
-})
+static __inline__ int atomic_add_unless(atomic_t *v, int a, int u)
+{
+ int c, old;
+ c = atomic_read(v);
+ for (;;) {
+ if (unlikely(c == (u)))
+ break;
+ old = atomic_cmpxchg((v), c, c + (a));
+ if (likely(old == c))
+ break;
+ c = old;
+ }
+ return c != (u);
+}
+
#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
#define atomic64_cmpxchg(v, o, n) \
((__typeof__((v)->counter))cmpxchg(&((v)->counter), (o), (n)))
#define atomic64_xchg(v, new) (xchg(&((v)->counter), new))
-#define atomic64_add_unless(v, a, u) \
-({ \
- __typeof__((v)->counter) c, old; \
- c = atomic64_read(v); \
- for (;;) { \
- if (unlikely(c == (u))) \
- break; \
- old = atomic64_cmpxchg((v), c, c + (a)); \
- if (likely(old == c)) \
- break; \
- c = old; \
- } \
- likely(c != (u)); \
-})
+static __inline__ int atomic64_add_unless(atomic64_t *v, long a, long u)
+{
+ long c, old;
+ c = atomic64_read(v);
+ for (;;) {
+ if (unlikely(c == (u)))
+ break;
+ old = atomic64_cmpxchg((v), c, c + (a));
+ if (likely(old == c))
+ break;
+ c = old;
+ }
+ return c != (u);
+}
+
#define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1, 0)
/* Atomic operations are already serializing */
diff -puN include/asm-x86_64/atomic.h~atomich-atomic_add_unless-as-inline-remove-systemh-atomich-circular-dependency include/asm-x86_64/atomic.h
--- a/include/asm-x86_64/atomic.h~atomich-atomic_add_unless-as-inline-remove-systemh-atomich-circular-dependency
+++ a/include/asm-x86_64/atomic.h
@@ -2,6 +2,7 @@
#define __ARCH_X86_64_ATOMIC__
#include <asm/alternative.h>
+#include <asm/system.h>
/* atomic_t should be 32 bit signed type */
@@ -403,20 +404,21 @@ static __inline__ long atomic64_sub_retu
* Atomically adds @a to @v, so long as it was not @u.
* Returns non-zero if @v was not @u, and zero otherwise.
*/
-#define atomic_add_unless(v, a, u) \
-({ \
- __typeof__((v)->counter) c, old; \
- c = atomic_read(v); \
- for (;;) { \
- if (unlikely(c == (u))) \
- break; \
- old = atomic_cmpxchg((v), c, c + (a)); \
- if (likely(old == c)) \
- break; \
- c = old; \
- } \
- c != (u); \
-})
+static __inline__ int atomic_add_unless(atomic_t *v, int a, int u)
+{
+ int c, old;
+ c = atomic_read(v);
+ for (;;) {
+ if (unlikely(c == (u)))
+ break;
+ old = atomic_cmpxchg((v), c, c + (a));
+ if (likely(old == c))
+ break;
+ c = old;
+ }
+ return c != (u);
+}
+
#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
/**
@@ -428,20 +430,21 @@ static __inline__ long atomic64_sub_retu
* Atomically adds @a to @v, so long as it was not @u.
* Returns non-zero if @v was not @u, and zero otherwise.
*/
-#define atomic64_add_unless(v, a, u) \
-({ \
- __typeof__((v)->counter) c, old; \
- c = atomic64_read(v); \
- for (;;) { \
- if (unlikely(c == (u))) \
- break; \
- old = atomic64_cmpxchg((v), c, c + (a)); \
- if (likely(old == c)) \
- break; \
- c = old; \
- } \
- c != (u); \
-})
+static __inline__ int atomic64_add_unless(atomic64_t *v, long a, long u)
+{
+ long c, old;
+ c = atomic64_read(v);
+ for (;;) {
+ if (unlikely(c == (u)))
+ break;
+ old = atomic64_cmpxchg((v), c, c + (a));
+ if (likely(old == c))
+ break;
+ c = old;
+ }
+ return c != (u);
+}
+
#define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1, 0)
/* These are x86-specific, used by some header files */
diff -puN include/asm-xtensa/atomic.h~atomich-atomic_add_unless-as-inline-remove-systemh-atomich-circular-dependency include/asm-xtensa/atomic.h
--- a/include/asm-xtensa/atomic.h~atomich-atomic_add_unless-as-inline-remove-systemh-atomich-circular-dependency
+++ a/include/asm-xtensa/atomic.h
@@ -234,14 +234,21 @@ static inline int atomic_sub_return(int
* Atomically adds @a to @v, so long as it was not @u.
* Returns non-zero if @v was not @u, and zero otherwise.
*/
-#define atomic_add_unless(v, a, u) \
-({ \
- int c, old; \
- c = atomic_read(v); \
- while (c != (u) && (old = atomic_cmpxchg((v), c, c + (a))) != c) \
- c = old; \
- c != (u); \
-})
+static __inline__ int atomic_add_unless(atomic_t *v, int a, int u)
+{
+ int c, old;
+ c = atomic_read(v);
+ for (;;) {
+ if (unlikely(c == (u)))
+ break;
+ old = atomic_cmpxchg((v), c, c + (a));
+ if (likely(old == c))
+ break;
+ c = old;
+ }
+ return c != (u);
+}
+
#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
static inline void atomic_clear_mask(unsigned int mask, atomic_t *v)
_
Patches currently in -mm which might be from compudj@xxxxxxxxxxxxxxxxxx are
origin.patch
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