#ifndef __ASM_ARM_SWITCH_TO_H#define __ASM_ARM_SWITCH_TO_H#include <linux/thread_info.h>/* * switch_to(prev, next) should switch from task `prev' to `next' * `prev' will never be the same as `next'. schedule() itself * contains the memory barrier to tell GCC not to cache `current'. */externstructtask_struct*__switch_to(structtask_struct*,structthread_info*,structthread_info*);#define switch_to(prev,next,last) \do { \ last = __switch_to(prev,task_thread_info(prev), task_thread_info(next)); \} while (0)#endif /* __ASM_ARM_SWITCH_TO_H */