1 #ifndef __SPARC_MMU_CONTEXT_H
2 #define __SPARC_MMU_CONTEXT_H
3 
4 #include <asm/btfixup.h>
5 
6 #ifndef __ASSEMBLY__
7 
8 #include <asm-generic/mm_hooks.h>
9 
10 static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk)
11 {
12 }
13 
14 /*
15  * Initialize a new mmu context.  This is invoked when a new
16  * address space instance (unique or shared) is instantiated.
17  */
18 #define init_new_context(tsk, mm) (((mm)->context = NO_CONTEXT), 0)
19 
20 /*
21  * Destroy a dead context.  This occurs when mmput drops the
22  * mm_users count to zero, the mmaps have been released, and
23  * all the page tables have been flushed.  Our job is to destroy
24  * any remaining processor-specific state.
25  */
26 BTFIXUPDEF_CALL(void, destroy_context, struct mm_struct *)
27 
28 #define destroy_context(mm) BTFIXUP_CALL(destroy_context)(mm)
29 
30 /* Switch the current MM context. */
31 BTFIXUPDEF_CALL(void, switch_mm, struct mm_struct *, struct mm_struct *, struct task_struct *)
32 
33 #define switch_mm(old_mm, mm, tsk) BTFIXUP_CALL(switch_mm)(old_mm, mm, tsk)
34 
35 #define deactivate_mm(tsk,mm)	do { } while (0)
36 
37 /* Activate a new MM instance for the current task. */
38 #define activate_mm(active_mm, mm) switch_mm((active_mm), (mm), NULL)
39 
40 #endif /* !(__ASSEMBLY__) */
41 
42 #endif /* !(__SPARC_MMU_CONTEXT_H) */
43