1 #ifndef __SPARC_MMU_CONTEXT_H 2 #define __SPARC_MMU_CONTEXT_H 3 4 #ifndef __ASSEMBLY__ 5 6 #include <asm-generic/mm_hooks.h> 7 8 static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk) 9 { 10 } 11 12 /* 13 * Initialize a new mmu context. This is invoked when a new 14 * address space instance (unique or shared) is instantiated. 15 */ 16 #define init_new_context(tsk, mm) (((mm)->context = NO_CONTEXT), 0) 17 18 /* 19 * Destroy a dead context. This occurs when mmput drops the 20 * mm_users count to zero, the mmaps have been released, and 21 * all the page tables have been flushed. Our job is to destroy 22 * any remaining processor-specific state. 23 */ 24 void destroy_context(struct mm_struct *mm); 25 26 /* Switch the current MM context. */ 27 void switch_mm(struct mm_struct *old_mm, struct mm_struct *mm, 28 struct task_struct *tsk); 29 30 #define deactivate_mm(tsk,mm) do { } while (0) 31 32 /* Activate a new MM instance for the current task. */ 33 #define activate_mm(active_mm, mm) switch_mm((active_mm), (mm), NULL) 34 35 #endif /* !(__ASSEMBLY__) */ 36 37 #endif /* !(__SPARC_MMU_CONTEXT_H) */ 38