mmu_context.h
上传用户:jlfgdled
上传日期:2013-04-10
资源大小:33168k
文件大小:1k
- #ifndef __SPARC_MMU_CONTEXT_H
- #define __SPARC_MMU_CONTEXT_H
- #include <asm/btfixup.h>
- #ifndef __ASSEMBLY__
- static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk, unsigned cpu)
- {
- }
- /*
- * Initialize a new mmu context. This is invoked when a new
- * address space instance (unique or shared) is instantiated.
- */
- #define init_new_context(tsk, mm) (((mm)->context = NO_CONTEXT), 0)
- /*
- * Destroy a dead context. This occurs when mmput drops the
- * mm_users count to zero, the mmaps have been released, and
- * all the page tables have been flushed. Our job is to destroy
- * any remaining processor-specific state.
- */
- BTFIXUPDEF_CALL(void, destroy_context, struct mm_struct *)
- #define destroy_context(mm) BTFIXUP_CALL(destroy_context)(mm)
- /* Switch the current MM context. */
- BTFIXUPDEF_CALL(void, switch_mm, struct mm_struct *, struct mm_struct *, struct task_struct *, int)
- #define switch_mm(old_mm, mm, tsk, cpu) BTFIXUP_CALL(switch_mm)(old_mm, mm, tsk, cpu)
- /* Activate a new MM instance for the current task. */
- #define activate_mm(active_mm, mm) switch_mm((active_mm), (mm), NULL, smp_processor_id())
- #endif /* !(__ASSEMBLY__) */
- #endif /* !(__SPARC_MMU_CONTEXT_H) */