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

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Acked-by: Max Filippov <jcmvbkbc@gmail.com>
Cc: Chris Zankel <chris@zankel.net>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: linux-xtensa@linux-xtensa.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/xtensa/include/asm/mmu_context.h

@@ -111,6 +111,7 @@ static inline void activate_context(struct mm_struct *mm, unsigned int cpu)
  * to -1 says the process has never run on any core.
  */
 
+#define init_new_context init_new_context
 static inline int init_new_context(struct task_struct *tsk,
 		struct mm_struct *mm)
 {
@@ -136,24 +137,18 @@ static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
 		activate_context(next, cpu);
 }
 
-#define activate_mm(prev, next)	switch_mm((prev), (next), NULL)
-#define deactivate_mm(tsk, mm)	do { } while (0)
-
 /*
  * Destroy context related info for an mm_struct that is about
  * to be put to rest.
  */
+#define destroy_context destroy_context
 static inline void destroy_context(struct mm_struct *mm)
 {
 	invalidate_page_directory();
 }
 
 
-static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk)
-{
-	/* Nothing to do. */
-
-}
+#include <asm-generic/mmu_context.h>
 
 #endif /* CONFIG_MMU */
 #endif /* _XTENSA_MMU_CONTEXT_H */

arch/xtensa/include/asm/nommu_context.h

@@ -7,28 +7,4 @@ static inline void init_kio(void)
 {
 }
 
-static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk)
-{
-}
-
-static inline int init_new_context(struct task_struct *tsk,struct mm_struct *mm)
-{
-	return 0;
-}
-
-static inline void destroy_context(struct mm_struct *mm)
-{
-}
-
-static inline void activate_mm(struct mm_struct *prev, struct mm_struct *next)
-{
-}
-
-static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
-				struct task_struct *tsk)
-{
-}
-
-static inline void deactivate_mm(struct task_struct *tsk, struct mm_struct *mm)
-{
-}
+#include <asm-generic/nommu_context.h>