/* SPDX-License-Identifier: GPL-2.0 */#ifndef __ASM_GENERIC_MMU_CONTEXT_H#define __ASM_GENERIC_MMU_CONTEXT_H /* * Generic hooks to implement no-op functionality. */ struct task_struct;struct mm_struct; /* * enter_lazy_tlb - Called when "tsk" is about to enter lazy TLB mode. * * @mm:  the currently active mm context which is becoming lazy * @tsk: task which is entering lazy tlb * * tsk->mm will be NULL */#ifndef enter_lazy_tlbstatic inline void enter_lazy_tlb(struct mm_struct *mm,			struct task_struct *tsk){}#endif /** * init_new_context - Initialize context of a new mm_struct. * @tsk: task struct for the mm * @mm:  the new mm struct * @return: 0 on success, -errno on failure */#ifndef init_new_contextstatic inline int init_new_context(struct task_struct *tsk,			struct mm_struct *mm){	return 0;}#endif /** * destroy_context - Undo init_new_context when the mm is going away * @mm: old mm struct */#ifndef destroy_contextstatic inline void destroy_context(struct mm_struct *mm){}#endif /** * activate_mm - called after exec switches the current task to a new mm, to switch to it * @prev_mm: previous mm of this task * @next_mm: new mm */#ifndef activate_mmstatic inline void activate_mm(struct mm_struct *prev_mm,			       struct mm_struct *next_mm){	switch_mm(prev_mm, next_mm, current);}#endif /** * dectivate_mm - called when an mm is released after exit or exec switches away from it * @tsk: the task * @mm:  the old mm */#ifndef deactivate_mmstatic inline void deactivate_mm(struct task_struct *tsk,			struct mm_struct *mm){}#endif #endif /* __ASM_GENERIC_MMU_CONTEXT_H */