csky: remove unusued thread_saved_pc and *_segments functions/macros

These are used nowhere in the tree (except for some architectures which define them for their own use) and were already removed for other architectures in: commit 6474924 ("arch: remove unused macro/function thread_saved_pc()") commit c17c020 ("arch: remove unused *_segments() macros/functions") Remove them from arch/csky as well. Signed-off-by: Tobias Klauser <[email protected]> Signed-off-by: Guo Ren <[email protected]> Cc: Arnd Bergmann <[email protected]>
LoveHeat · Jul 31, 2020 · c23dd24 · c23dd24
1 parent 92ed301
commit c23dd24
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diff --git a/arch/csky/include/asm/processor.h b/arch/csky/include/asm/processor.h
@@ -82,12 +82,6 @@ static inline void release_thread(struct task_struct *dead_task)
 
 extern int kernel_thread(int (*fn)(void *), void *arg, unsigned long flags);
 
-#define copy_segments(tsk, mm)		do { } while (0)
-#define release_segments(mm)		do { } while (0)
-#define forget_segments()		do { } while (0)
-
-extern unsigned long thread_saved_pc(struct task_struct *tsk);
-
 unsigned long get_wchan(struct task_struct *p);
 
 #define KSTK_EIP(tsk)		(task_pt_regs(tsk)->pc)

diff --git a/arch/csky/kernel/process.c b/arch/csky/kernel/process.c
@@ -30,16 +30,6 @@ asmlinkage void ret_from_kernel_thread(void);
  */
 void flush_thread(void){}
 
-/*
- * Return saved PC from a blocked thread
- */
-unsigned long thread_saved_pc(struct task_struct *tsk)
-{
-	struct switch_stack *sw = (struct switch_stack *)tsk->thread.sp;
-
-	return sw->r15;
-}
-
 int copy_thread_tls(unsigned long clone_flags,
 		unsigned long usp,
 		unsigned long kthread_arg,