#ifndef _ASM_SYSTEM_H
#define _ASM_SYSTEM_H
+#include <linux/config.h> /* get configuration macros */
#include <linux/linkage.h>
#include <asm/atomic.h>
struct thread_struct;
+#define prepare_to_switch() do { } while(0)
+
/*
* switch_to(prev, next) should switch from task `prev' to `next'
* `prev' will never be the same as `next'.
#define rmb() asm volatile ("membar" : : :"memory")
#define wmb() asm volatile ("membar" : : :"memory")
#define set_mb(var, value) do { var = value; mb(); } while (0)
+#define set_wmb(var, value) do { var = value; wmb(); } while (0)
#define smp_mb() mb()
#define smp_rmb() rmb()