Fedora kernel-2.6.17-1.2142_FC4 patched with stable patch-2.6.17.4-vs2.0.2-rc26.diff

[linux-2.6.git] / include / asm-h8300 / atomic.h

diff --git a/include/asm-h8300/atomic.h b/include/asm-h8300/atomic.h
index 7230f65..21f5442 100644 (file)
--- a/include/asm-h8300/atomic.h
+++ b/include/asm-h8300/atomic.h
@@ -82,6 +82,35 @@ static __inline__ int atomic_dec_and_test(atomic_t *v)
        return ret == 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)
+
 static __inline__ void atomic_clear_mask(unsigned long mask, unsigned long *v)
 {
        __asm__ __volatile__("stc ccr,r1l\n\t"
@@ -110,4 +139,5 @@ static __inline__ void atomic_set_mask(unsigned long mask, unsigned long *v)
 #define smp_mb__before_atomic_inc()    barrier()
 #define smp_mb__after_atomic_inc() barrier()
 
+#include <asm-generic/atomic.h>
 #endif /* __ARCH_H8300_ATOMIC __ */