1 #ifndef __ASM_ARM_SWITCH_TO_H 2 #define __ASM_ARM_SWITCH_TO_H 3 4 #include <linux/thread_info.h> 5 6 /* 7 * switch_to(prev, next) should switch from task `prev' to `next' 8 * `prev' will never be the same as `next'. schedule() itself 9 * contains the memory barrier to tell GCC not to cache `current'. 10 */ 11 extern struct task_struct *__switch_to(struct task_struct *, struct thread_info *, struct thread_info *); 12 13 #define switch_to(prev,next,last) \ 14 do { \ 15 last = __switch_to(prev,task_thread_info(prev), task_thread_info(next)); \ 16 } while (0) 17 18 #endif /* __ASM_ARM_SWITCH_TO_H */ 19