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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#ifndef __SPARC_MMU_CONTEXT_H
2#define __SPARC_MMU_CONTEXT_H
3
4#include <asm/btfixup.h>
5
6#ifndef __ASSEMBLY__
7
8static 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 */
24BTFIXUPDEF_CALL(void, destroy_context, struct mm_struct *)
25
26#define destroy_context(mm) BTFIXUP_CALL(destroy_context)(mm)
27
28/* Switch the current MM context. */
29BTFIXUPDEF_CALL(void, switch_mm, struct mm_struct *, struct mm_struct *, struct task_struct *)
30
31#define switch_mm(old_mm, mm, tsk) BTFIXUP_CALL(switch_mm)(old_mm, mm, tsk)
32
33#define deactivate_mm(tsk,mm) do { } while (0)
34
35/* Activate a new MM instance for the current task. */
36#define activate_mm(active_mm, mm) switch_mm((active_mm), (mm), NULL)
37
38#endif /* !(__ASSEMBLY__) */
39
40#endif /* !(__SPARC_MMU_CONTEXT_H) */