#endif /* CONFIG_X86_32 */
-#define read_barrier_depends() do { } while (0)
-
-#ifdef CONFIG_SMP
-
-#define smp_mb() mb()
#ifdef CONFIG_X86_PPRO_FENCE
-#define smp_rmb() rmb()
+#define dma_rmb() rmb()
#else /* CONFIG_X86_PPRO_FENCE */
-#define smp_rmb() barrier()
+#define dma_rmb() barrier()
#endif /* CONFIG_X86_PPRO_FENCE */
+#define dma_wmb() barrier()
-#define smp_wmb() barrier()
+#ifdef CONFIG_SMP
-#define smp_read_barrier_depends() read_barrier_depends()
+#define smp_mb() mb()
+#define smp_rmb() dma_rmb()
+#define smp_wmb() barrier()
#define set_mb(var, value) do { (void)xchg(&var, value); } while (0)
#else /* CONFIG_SMP */
#define smp_mb() barrier()
#define smp_rmb() barrier()
#define smp_wmb() barrier()
-#define smp_read_barrier_depends() do { } while (0)
#define set_mb(var, value) do { var = value; barrier(); } while (0)
#endif /* CONFIG_SMP */
+#define read_barrier_depends() do { } while (0)
+#define smp_read_barrier_depends() do { } while (0)
+
/*
* Stop RDTSC speculation. This is needed when you need to use RDTSC
* (or get_cycles or vread that possibly accesses the TSC) in a defined