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/* 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_tlb static 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_context static 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_context static 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_mm static 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_mm static inline void deactivate_mm(struct task_struct *tsk, struct mm_struct *mm) { } #endif #endif /* __ASM_GENERIC_MMU_CONTEXT_H */