From 6474924e2b5ddb0030c355558966adcbe3b49022 Mon Sep 17 00:00:00 2001 From: Tobias Klauser Date: Wed, 28 Jun 2017 15:30:02 +0200 Subject: arch: remove unused macro/function thread_saved_pc() The only user of thread_saved_pc() in non-arch-specific code was removed in commit 8243d5597793 ("sched/core: Remove pointless printout in sched_show_task()"). Remove the implementations as well. Some architectures use thread_saved_pc() in their arch-specific code. Leave their thread_saved_pc() intact. Signed-off-by: Tobias Klauser Acked-by: Geert Uytterhoeven Cc: Ingo Molnar Signed-off-by: Linus Torvalds --- arch/s390/kernel/process.c | 25 ------------------------- 1 file changed, 25 deletions(-) (limited to 'arch/s390/kernel') diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c index 999d7154bbdc..bb32b8618bf6 100644 --- a/arch/s390/kernel/process.c +++ b/arch/s390/kernel/process.c @@ -41,31 +41,6 @@ asmlinkage void ret_from_fork(void) asm ("ret_from_fork"); -/* - * Return saved PC of a blocked thread. used in kernel/sched. - * resume in entry.S does not create a new stack frame, it - * just stores the registers %r6-%r15 to the frame given by - * schedule. We want to return the address of the caller of - * schedule, so we have to walk the backchain one time to - * find the frame schedule() store its return address. - */ -unsigned long thread_saved_pc(struct task_struct *tsk) -{ - struct stack_frame *sf, *low, *high; - - if (!tsk || !task_stack_page(tsk)) - return 0; - low = task_stack_page(tsk); - high = (struct stack_frame *) task_pt_regs(tsk); - sf = (struct stack_frame *) tsk->thread.ksp; - if (sf <= low || sf > high) - return 0; - sf = (struct stack_frame *) sf->back_chain; - if (sf <= low || sf > high) - return 0; - return sf->gprs[8]; -} - extern void kernel_thread_starter(void); /* -- cgit