#ifndef __V850_ATOMIC_H__
#define __V850_ATOMIC_H__
-#include <linux/config.h>
#include <asm/system.h>
#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__ */