From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932692AbaH0E3x (ORCPT ); Wed, 27 Aug 2014 00:29:53 -0400 Received: from mail-pa0-f46.google.com ([209.85.220.46]:50847 "EHLO mail-pa0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751050AbaH0E3t (ORCPT ); Wed, 27 Aug 2014 00:29:49 -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 3/6] arm64: LLVMLinux: Calculate current_thread_info from current_stack_pointer Date: Tue, 26 Aug 2014 21:29:31 -0700 Message-Id: <1409113774-3172-4-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> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 Möller Reviewed-by: Olof Johansson Acked-by: Will Deacon --- arch/arm64/include/asm/thread_info.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm64/include/asm/thread_info.h b/arch/arm64/include/asm/thread_info.h index 356e037..459bf8e 100644 --- a/arch/arm64/include/asm/thread_info.h +++ b/arch/arm64/include/asm/thread_info.h @@ -80,8 +80,8 @@ static inline struct thread_info *current_thread_info(void) __attribute_const__; static inline struct thread_info *current_thread_info(void) { - register unsigned long sp asm ("sp"); - return (struct thread_info *)(sp & ~(THREAD_SIZE - 1)); + return (struct thread_info *) + (current_stack_pointer & ~(THREAD_SIZE - 1)); } #define thread_saved_pc(tsk) \ -- 1.9.1