alpha: use asm-generic/mmu_context.h for no-op implementations

Signed-off-by: Nicholas Piggin <[e-mail]>
Acked-by: Matt Turner <[e-mail]>
Cc: Richard Henderson <[e-mail]>
Cc: Ivan Kokshaysky <[e-mail]>
Cc: Matt Turner <[e-mail]>
Cc: [e-mail]
Signed-off-by: Arnd Bergmann <[e-mail]>

arch/alpha/include/asm/mmu_context.h

···
 	tbiap();
 }
 
-#define deactivate_mm(tsk,mm)	do { } while (0)
-
 #ifdef CONFIG_ALPHA_GENERIC
 # define switch_mm(a,b,c)	alpha_mv.mv_switch_mm((a),(b),(c))
 # define activate_mm(x,y)	alpha_mv.mv_activate_mm((x),(y))
···
 # endif
 #endif
 
+#define init_new_context init_new_context
 static inline int
 init_new_context(struct task_struct *tsk, struct mm_struct *mm)
 {
···
 	return 0;
 }
 
-extern inline void
-destroy_context(struct mm_struct *mm)
-{
-	/* Nothing to do.  */
-}
-
+#define enter_lazy_tlb enter_lazy_tlb
 static inline void
 enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk)
 {
 	task_thread_info(tsk)->pcb.ptbr
 	  = ((unsigned long)mm->pgd - IDENT_ADDR) >> PAGE_SHIFT;
 }
+
+#include <asm-generic/mmu_context.h>
 
 #ifdef __MMU_EXTERN_INLINE
 #undef __EXTERN_INLINE