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Diffstat (limited to 'arch/sparc/include/asm/atomic_64.h')
-rw-r--r--arch/sparc/include/asm/atomic_64.h49
1 files changed, 25 insertions, 24 deletions
diff --git a/arch/sparc/include/asm/atomic_64.h b/arch/sparc/include/asm/atomic_64.h
index bb894c8..4082749 100644
--- a/arch/sparc/include/asm/atomic_64.h
+++ b/arch/sparc/include/asm/atomic_64.h
@@ -14,33 +14,34 @@
#define ATOMIC_INIT(i) { (i) }
#define ATOMIC64_INIT(i) { (i) }
-#define atomic_read(v) (*(volatile int *)&(v)->counter)
-#define atomic64_read(v) (*(volatile long *)&(v)->counter)
+#define atomic_read(v) ACCESS_ONCE((v)->counter)
+#define atomic64_read(v) ACCESS_ONCE((v)->counter)
#define atomic_set(v, i) (((v)->counter) = i)
#define atomic64_set(v, i) (((v)->counter) = i)
-void atomic_add(int, atomic_t *);
-void atomic64_add(long, atomic64_t *);
-void atomic_sub(int, atomic_t *);
-void atomic64_sub(long, atomic64_t *);
+#define ATOMIC_OP(op) \
+void atomic_##op(int, atomic_t *); \
+void atomic64_##op(long, atomic64_t *);
-int atomic_add_ret(int, atomic_t *);
-long atomic64_add_ret(long, atomic64_t *);
-int atomic_sub_ret(int, atomic_t *);
-long atomic64_sub_ret(long, atomic64_t *);
+#define ATOMIC_OP_RETURN(op) \
+int atomic_##op##_return(int, atomic_t *); \
+long atomic64_##op##_return(long, atomic64_t *);
-#define atomic_dec_return(v) atomic_sub_ret(1, v)
-#define atomic64_dec_return(v) atomic64_sub_ret(1, v)
+#define ATOMIC_OPS(op) ATOMIC_OP(op) ATOMIC_OP_RETURN(op)
-#define atomic_inc_return(v) atomic_add_ret(1, v)
-#define atomic64_inc_return(v) atomic64_add_ret(1, v)
+ATOMIC_OPS(add)
+ATOMIC_OPS(sub)
-#define atomic_sub_return(i, v) atomic_sub_ret(i, v)
-#define atomic64_sub_return(i, v) atomic64_sub_ret(i, v)
+#undef ATOMIC_OPS
+#undef ATOMIC_OP_RETURN
+#undef ATOMIC_OP
-#define atomic_add_return(i, v) atomic_add_ret(i, v)
-#define atomic64_add_return(i, v) atomic64_add_ret(i, v)
+#define atomic_dec_return(v) atomic_sub_return(1, v)
+#define atomic64_dec_return(v) atomic64_sub_return(1, v)
+
+#define atomic_inc_return(v) atomic_add_return(1, v)
+#define atomic64_inc_return(v) atomic64_add_return(1, v)
/*
* atomic_inc_and_test - increment and test
@@ -53,11 +54,11 @@ long atomic64_sub_ret(long, atomic64_t *);
#define atomic_inc_and_test(v) (atomic_inc_return(v) == 0)
#define atomic64_inc_and_test(v) (atomic64_inc_return(v) == 0)
-#define atomic_sub_and_test(i, v) (atomic_sub_ret(i, v) == 0)
-#define atomic64_sub_and_test(i, v) (atomic64_sub_ret(i, v) == 0)
+#define atomic_sub_and_test(i, v) (atomic_sub_return(i, v) == 0)
+#define atomic64_sub_and_test(i, v) (atomic64_sub_return(i, v) == 0)
-#define atomic_dec_and_test(v) (atomic_sub_ret(1, v) == 0)
-#define atomic64_dec_and_test(v) (atomic64_sub_ret(1, v) == 0)
+#define atomic_dec_and_test(v) (atomic_sub_return(1, v) == 0)
+#define atomic64_dec_and_test(v) (atomic64_sub_return(1, v) == 0)
#define atomic_inc(v) atomic_add(1, v)
#define atomic64_inc(v) atomic64_add(1, v)
@@ -65,8 +66,8 @@ long atomic64_sub_ret(long, atomic64_t *);
#define atomic_dec(v) atomic_sub(1, v)
#define atomic64_dec(v) atomic64_sub(1, v)
-#define atomic_add_negative(i, v) (atomic_add_ret(i, v) < 0)
-#define atomic64_add_negative(i, v) (atomic64_add_ret(i, v) < 0)
+#define atomic_add_negative(i, v) (atomic_add_return(i, v) < 0)
+#define atomic64_add_negative(i, v) (atomic64_add_return(i, v) < 0)
#define atomic_cmpxchg(v, o, n) (cmpxchg(&((v)->counter), (o), (n)))
#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
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