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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
Jeremy Fitzhardinged6dd61c2007-05-02 19:27:14 +02008#include <asm-generic/mm_hooks.h>
9
Linus Torvalds1da177e2005-04-16 15:20:36 -070010static 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 */
26BTFIXUPDEF_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. */
31BTFIXUPDEF_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) */