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Edit File: switch_to.h

/* SPDX-License-Identifier: GPL-2.0 */ #ifndef __ASM_ARM_SWITCH_TO_H #define __ASM_ARM_SWITCH_TO_H #include <linux/thread_info.h> /* * For v7 SMP cores running a preemptible kernel we may be pre-empted * during a TLB maintenance operation, so execute an inner-shareable dsb * to ensure that the maintenance completes in case we migrate to another * CPU. */ #if defined(CONFIG_PREEMPTION) && defined(CONFIG_SMP) && defined(CONFIG_CPU_V7) #define __complete_pending_tlbi() dsb(ish) #else #define __complete_pending_tlbi() #endif /* * 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'. */ extern struct task_struct *__switch_to(struct task_struct *, struct thread_info *, struct thread_info *); #define switch_to(prev,next,last) \ do { \ __complete_pending_tlbi(); \ last = __switch_to(prev,task_thread_info(prev), task_thread_info(next)); \ } while (0) #endif /* __ASM_ARM_SWITCH_TO_H */