diff options
Diffstat (limited to 'arch/m68k/include/asm/atomic.h')
| -rw-r--r-- | arch/m68k/include/asm/atomic.h | 21 |
1 files changed, 13 insertions, 8 deletions
diff --git a/arch/m68k/include/asm/atomic.h b/arch/m68k/include/asm/atomic.h index 65c6be6c818..55695212a2a 100644 --- a/arch/m68k/include/asm/atomic.h +++ b/arch/m68k/include/asm/atomic.h @@ -2,7 +2,9 @@ #define __ARCH_M68K_ATOMIC__ #include <linux/types.h> -#include <asm/system.h> +#include <linux/irqflags.h> +#include <asm/cmpxchg.h> +#include <asm/barrier.h> /* * Atomic operations that C can't guarantee us. Useful for @@ -55,6 +57,16 @@ static inline int atomic_dec_and_test(atomic_t *v) return c != 0; } +static inline int atomic_dec_and_test_lt(atomic_t *v) +{ + char c; + __asm__ __volatile__( + "subql #1,%1; slt %0" + : "=d" (c), "=m" (*v) + : "m" (*v)); + return c != 0; +} + static inline int atomic_inc_and_test(atomic_t *v) { char c; @@ -198,11 +210,4 @@ static __inline__ int __atomic_add_unless(atomic_t *v, int a, int u) return c; } - -/* Atomic operations are already serializing */ -#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() - #endif /* __ARCH_M68K_ATOMIC __ */ |