arch: remove unused *_segments() macros/functions

Some architectures define the no-op macros/functions copy_segments,
release_segments and forget_segments. These are used nowhere in the
tree, so removed them.

Signed-off-by: Tobias Klauser <[e-mail]>
Acked-by: Vineet Gupta <[e-mail]> [for arch/arc]
Signed-off-by: Linus Torvalds <[e-mail]>

arch/arc/include/asm/processor.h

···
 
 #endif
 
-#define copy_segments(tsk, mm)      do { } while (0)
-#define release_segments(mm)        do { } while (0)
-
 #define KSTK_EIP(tsk)   (task_pt_regs(tsk)->ret)
 #define KSTK_ESP(tsk)   (task_pt_regs(tsk)->sp)
 

arch/c6x/include/asm/processor.h

···
 {
 }
 
-#define copy_segments(tsk, mm)		do { } while (0)
-#define release_segments(mm)		do { } while (0)
-
 /*
  * saved kernel SP and DP of a blocked thread.
  */

arch/frv/include/asm/processor.h

···
 extern asmlinkage void save_user_regs(struct user_context *target);
 extern asmlinkage void *restore_user_regs(const struct user_context *target, ...);
 
-#define copy_segments(tsk, mm)		do { } while (0)
-#define release_segments(mm)		do { } while (0)
-#define forget_segments()		do { } while (0)
-
 unsigned long get_wchan(struct task_struct *p);
 
 #define	KSTK_EIP(tsk)	((tsk)->thread.frame0->pc)

arch/m32r/include/asm/processor.h

···
 /* Free all resources held by a thread. */
 extern void release_thread(struct task_struct *);
 
-/* Copy and release all segment info associated with a VM */
-extern void copy_segments(struct task_struct *p, struct mm_struct * mm);
-extern void release_segments(struct mm_struct * mm);
-
-/* Copy and release all segment info associated with a VM */
-#define copy_segments(p, mm)  do { } while (0)
-#define release_segments(mm)  do { } while (0)
-
 unsigned long get_wchan(struct task_struct *p);
 #define KSTK_EIP(tsk)  ((tsk)->thread.lr)
 #define KSTK_ESP(tsk)  ((tsk)->thread.sp)

arch/metag/include/asm/processor.h

···
 {
 }
 
-#define copy_segments(tsk, mm)		do { } while (0)
-#define release_segments(mm)		do { } while (0)
-
 /*
  * Return saved PC of a blocked thread.
  */

arch/mn10300/kernel/process.c

···
 }
 #endif
 
-void release_segments(struct mm_struct *mm)
-{
-}
-
 void machine_restart(char *cmd)
 {
 #ifdef CONFIG_KERNEL_DEBUGGER
···
 }
 
 void release_thread(struct task_struct *dead_task)
-{
-}
-
-/*
- * we do not have to muck with descriptors here, that is
- * done in switch_mm() as needed.
- */
-void copy_segments(struct task_struct *p, struct mm_struct *new_mm)
 {
 }
 

arch/sh/include/asm/processor_32.h

···
 /* Free all resources held by a thread. */
 extern void release_thread(struct task_struct *);
 
-/* Copy and release all segment info associated with a VM */
-#define copy_segments(p, mm)	do { } while(0)
-#define release_segments(mm)	do { } while(0)
-
 /*
  * FPU lazy state save handling.
  */

arch/sh/include/asm/processor_64.h

···
 /* Free all resources held by a thread. */
 extern void release_thread(struct task_struct *);
 
-/* Copy and release all segment info associated with a VM */
-#define copy_segments(p, mm)	do { } while (0)
-#define release_segments(mm)	do { } while (0)
-#define forget_segments()	do { } while (0)
 /*
  * FPU lazy state save handling.
  */

arch/um/include/asm/processor-generic.h

···
 {
 }
 
-static inline void mm_copy_segments(struct mm_struct *from_mm,
-				    struct mm_struct *new_mm)
-{
-}
-
 #define init_stack	(init_thread_union.stack)
 
 /*

arch/xtensa/include/asm/processor.h

···
 /* Free all resources held by a thread. */
 #define release_thread(thread) do { } while(0)
 
-/* Copy and release all segment info associated with a VM */
-#define copy_segments(p, mm)	do { } while(0)
-#define release_segments(mm)	do { } while(0)
-#define forget_segments()	do { } while (0)
-
 extern unsigned long get_wchan(struct task_struct *p);
 
 #define KSTK_EIP(tsk)		(task_pt_regs(tsk)->pc)