X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=include%2Fasm-v850%2Fatomic.h;h=e4e57de08f73054b042592f638ed12d76d046f9e;hb=refs%2Fheads%2Fvserver;hp=8284aa7363f21ff7c75fb4377a297b34ba2fb2b6;hpb=9213980e6a70d8473e0ffd4b39ab5b6caaba9ff5;p=linux-2.6.git

diff --git a/include/asm-v850/atomic.h b/include/asm-v850/atomic.h
index 8284aa736..e4e57de08 100644
--- a/include/asm-v850/atomic.h
+++ b/include/asm-v850/atomic.h
@@ -14,7 +14,6 @@
 #ifndef __V850_ATOMIC_H__
 #define __V850_ATOMIC_H__
 
-#include <linux/config.h>
 
 #include <asm/system.h>
 
@@ -31,7 +30,7 @@ typedef struct { int counter; } atomic_t;
 #define atomic_read(v)		((v)->counter)
 #define atomic_set(v,i)		(((v)->counter) = (i))
 
-extern __inline__ int atomic_add_return (int i, volatile atomic_t *v)
+static inline int atomic_add_return (int i, volatile atomic_t *v)
 {
 	unsigned long flags;
 	int res;
@@ -90,10 +89,43 @@ static __inline__ void atomic_clear_mask (unsigned long mask, unsigned long *add
 #define atomic_dec_and_test(v)		(atomic_sub_return (1, (v)) == 0)
 #define atomic_add_negative(i,v)	(atomic_add_return ((i), (v)) < 0)
 
+static inline int atomic_cmpxchg(atomic_t *v, int old, int new)
+{
+	int ret;
+	unsigned long flags;
+
+	local_irq_save(flags);
+	ret = v->counter;
+	if (likely(ret == old))
+		v->counter = new;
+	local_irq_restore(flags);
+
+	return ret;
+}
+
+#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
+
+static inline int atomic_add_unless(atomic_t *v, int a, int u)
+{
+	int ret;
+	unsigned long flags;
+
+	local_irq_save(flags);
+	ret = v->counter;
+	if (ret != u)
+		v->counter += a;
+	local_irq_restore(flags);
+
+	return ret != u;
+}
+
+#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
+
 /* Atomic operations are already serializing on ARM */
 #define smp_mb__before_atomic_dec()	barrier()
 #define smp_mb__after_atomic_dec()	barrier()
 #define smp_mb__before_atomic_inc()	barrier()
 #define smp_mb__after_atomic_inc()	barrier()
 
+#include <asm-generic/atomic.h>
 #endif /* __V850_ATOMIC_H__ */