From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751513AbaH0E3z (ORCPT ); Wed, 27 Aug 2014 00:29:55 -0400 Received: from mail-pa0-f42.google.com ([209.85.220.42]:37502 "EHLO mail-pa0-f42.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932621AbaH0E3v (ORCPT ); Wed, 27 Aug 2014 00:29:51 -0400 From: behanw@converseincode.com To: ard.biesheuvel@linaro.org, catalin.marinas@arm.com, cl@linux-foundation.org, jays.lee@samsung.com, k.khlebnikov@samsung.com, larry.bassel@linaro.org, olof@lixom.net, peterz@infradead.org, takahiro.akashi@linaro.org, tglx@linutronix.de, tj@kernel.org, will.deacon@arm.com Cc: christoffer.dall@linaro.org, kgene.kim@samsung.com, khilman@linaro.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, sungjinn.chung@samsung.com, Behan Webster , Mark Charlebois Subject: [PATCH V2 4/6] arm64: LLVMLinux: Use current_stack_pointer in kernel/traps.c Date: Tue, 26 Aug 2014 21:29:32 -0700 Message-Id: <1409113774-3172-5-git-send-email-behanw@converseincode.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1409113774-3172-1-git-send-email-behanw@converseincode.com> References: <20140826141608.GT23445@arm.com> <1409113774-3172-1-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: Olof Johansson Acked-by: Will Deacon --- arch/arm64/kernel/traps.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/arch/arm64/kernel/traps.c b/arch/arm64/kernel/traps.c index 02cd3f0..de1b085 100644 --- a/arch/arm64/kernel/traps.c +++ b/arch/arm64/kernel/traps.c @@ -132,7 +132,6 @@ static void dump_instr(const char *lvl, struct pt_regs *regs) static void dump_backtrace(struct pt_regs *regs, struct task_struct *tsk) { struct stackframe frame; - const register unsigned long current_sp asm ("sp"); pr_debug("%s(regs = %p tsk = %p)\n", __func__, regs, tsk); @@ -145,7 +144,7 @@ static void dump_backtrace(struct pt_regs *regs, struct task_struct *tsk) frame.pc = regs->pc; } else if (tsk == current) { frame.fp = (unsigned long)__builtin_frame_address(0); - frame.sp = current_sp; + frame.sp = current_stack_pointer; frame.pc = (unsigned long)dump_backtrace; } else { /* -- 1.9.1