From 74dbeee0fcded9525ddb42b53ee75dc62c8089d9 Mon Sep 17 00:00:00 2001 From: Behan Webster Date: Sat, 27 Sep 2014 00:31:08 +0100 Subject: [PATCH] ARM: 8172/1: Use current_stack_pointer in save_stack_trace_tsk MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Use the global current_stack_pointer to get the value of the stack pointer. This change supports being able to compile the kernel with both gcc and clang. Signed-off-by: Behan Webster Reviewed-by: Mark Charlebois Reviewed-by: Jan-Simon Möller Acked-by: Will Deacon Acked-by: Nicolas Pitre Signed-off-by: Russell King --- arch/arm/kernel/stacktrace.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/arch/arm/kernel/stacktrace.c b/arch/arm/kernel/stacktrace.c index f065eb05d254..92b72375c4c7 100644 --- a/arch/arm/kernel/stacktrace.c +++ b/arch/arm/kernel/stacktrace.c @@ -134,12 +134,10 @@ static noinline void __save_stack_trace(struct task_struct *tsk, frame.pc = thread_saved_pc(tsk); #endif } else { - register unsigned long current_sp asm ("sp"); - /* We don't want this function nor the caller */ data.skip += 2; frame.fp = (unsigned long)__builtin_frame_address(0); - frame.sp = current_sp; + frame.sp = current_stack_pointer; frame.lr = (unsigned long)__builtin_return_address(0); frame.pc = (unsigned long)__save_stack_trace; } -- 2.20.1