Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932469AbaGHUSA (ORCPT ); Tue, 8 Jul 2014 16:18:00 -0400 Received: from mail-pd0-f181.google.com ([209.85.192.181]:56175 "EHLO mail-pd0-f181.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932275AbaGHUQu (ORCPT ); Tue, 8 Jul 2014 16:16:50 -0400 From: behanw@converseincode.com To: anurag19aggarwal@gmail.com, catalin.marinas@arm.com, charlebm@gmail.com, dave.long@linaro.org, k.khlebnikov@samsung.com, linux@arm.linux.org.uk, linyongting@gmail.com, Nikolay.Borisov@arm.com, tglx@linutronix.de, u.kleine-koenig@pengutronix.de, will.deacon@arm.com Cc: behanw@converseincode.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, rabin@rab.in, rostedt@goodmis.org, dwmw2@infradead.org Subject: [PATCH 4/6] arm: LLVMLinux: Use current_stack_pointer in save_stack_trace_tsk Date: Tue, 8 Jul 2014 13:16:14 -0700 Message-Id: <1404850576-2006-5-git-send-email-behanw@converseincode.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1404850576-2006-1-git-send-email-behanw@converseincode.com> References: <1404850576-2006-1-git-send-email-behanw@converseincode.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Behan Webster 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 Signed-off-by: Mark Charlebois Reviewed-by: Jan-Simon M??ller --- 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 f065eb0..92b7237 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; } -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/