Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932366AbaGHUQ5 (ORCPT ); Tue, 8 Jul 2014 16:16:57 -0400 Received: from mail-pd0-f174.google.com ([209.85.192.174]:45673 "EHLO mail-pd0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932241AbaGHUQy (ORCPT ); Tue, 8 Jul 2014 16:16:54 -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 6/6] arm: LLVMLinux: Use current_stack_pointer in unwind_backtrace Date: Tue, 8 Jul 2014 13:16:16 -0700 Message-Id: <1404850576-2006-7-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/unwind.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/arch/arm/kernel/unwind.c b/arch/arm/kernel/unwind.c index e67682f..e20e8dc 100644 --- a/arch/arm/kernel/unwind.c +++ b/arch/arm/kernel/unwind.c @@ -471,7 +471,6 @@ int unwind_frame(struct stackframe *frame) void unwind_backtrace(struct pt_regs *regs, struct task_struct *tsk) { struct stackframe frame; - register unsigned long current_sp asm ("sp"); pr_debug("%s(regs = %p tsk = %p)\n", __func__, regs, tsk); @@ -487,7 +486,7 @@ void unwind_backtrace(struct pt_regs *regs, struct task_struct *tsk) ? regs->ARM_pc : regs->ARM_lr; } else if (tsk == current) { 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)unwind_backtrace; } else { -- 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/