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

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Acked-by: Matt Turner <mattst88@gmail.com>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Matt Turner <mattst88@gmail.com>
Cc: linux-alpha@vger.kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/alpha/include/asm/mmu_context.h

@@ -214,8 +214,6 @@ ev4_activate_mm(struct mm_struct *prev_mm, struct mm_struct *next_mm)
 	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))
@@ -229,6 +227,7 @@ ev4_activate_mm(struct mm_struct *prev_mm, struct mm_struct *next_mm)
 # endif
 #endif
 
+#define init_new_context init_new_context
 static inline int
 init_new_context(struct task_struct *tsk, struct mm_struct *mm)
 {
@@ -242,12 +241,7 @@ 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)
 {
@@ -255,6 +249,8 @@ enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk)
 	  = ((unsigned long)mm->pgd - IDENT_ADDR) >> PAGE_SHIFT;
 }
 
+#include <asm-generic/mmu_context.h>
+
 #ifdef __MMU_EXTERN_INLINE
 #undef __EXTERN_INLINE
 #undef __MMU_EXTERN_INLINE