From 76737ce17ab4c88f14e4452076610474108246d7 Mon Sep 17 00:00:00 2001 From: Heiko Carstens Date: Sun, 31 Jan 2016 17:06:16 +0100 Subject: s390: add current_stack_pointer() helper function Implement current_stack_pointer() helper function and use it everywhere, instead of having several different inline assembly variants. Signed-off-by: Heiko Carstens Tested-by: Peter Oberparleiter Signed-off-by: Martin Schwidefsky --- arch/s390/kernel/dumpstack.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) (limited to 'arch/s390/kernel/dumpstack.c') diff --git a/arch/s390/kernel/dumpstack.c b/arch/s390/kernel/dumpstack.c index 02bd02ff648b..feda48f243ef 100644 --- a/arch/s390/kernel/dumpstack.c +++ b/arch/s390/kernel/dumpstack.c @@ -67,12 +67,11 @@ static void show_trace(struct task_struct *task, unsigned long *stack) { const unsigned long frame_size = STACK_FRAME_OVERHEAD + sizeof(struct pt_regs); - register unsigned long __r15 asm ("15"); unsigned long sp; sp = (unsigned long) stack; if (!sp) - sp = task ? task->thread.ksp : __r15; + sp = task ? task->thread.ksp : current_stack_pointer(); printk("Call Trace:\n"); #ifdef CONFIG_CHECK_STACK sp = __show_trace(sp, @@ -95,15 +94,16 @@ static void show_trace(struct task_struct *task, unsigned long *stack) void show_stack(struct task_struct *task, unsigned long *sp) { - register unsigned long *__r15 asm ("15"); unsigned long *stack; int i; - if (!sp) - stack = task ? (unsigned long *) task->thread.ksp : __r15; - else - stack = sp; - + stack = sp; + if (!stack) { + if (!task) + stack = (unsigned long *)current_stack_pointer(); + else + stack = (unsigned long *)task->thread.ksp; + } for (i = 0; i < 20; i++) { if (((addr_t) stack & (THREAD_SIZE-1)) == 0) break; -- cgit