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 10static 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) */ 43