From patchwork Sun Jan 10 14:22:05 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Michael S. Tsirkin" X-Patchwork-Id: 565395 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 727061402BC for ; Mon, 11 Jan 2016 01:22:24 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758024AbcAJOWS (ORCPT ); Sun, 10 Jan 2016 09:22:18 -0500 Received: from mx1.redhat.com ([209.132.183.28]:39596 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757642AbcAJOWO (ORCPT ); Sun, 10 Jan 2016 09:22:14 -0500 Received: from int-mx13.intmail.prod.int.phx2.redhat.com (int-mx13.intmail.prod.int.phx2.redhat.com [10.5.11.26]) by mx1.redhat.com (Postfix) with ESMTPS id 0DB3D8E390; Sun, 10 Jan 2016 14:22:14 +0000 (UTC) Received: from redhat.com (vpn1-5-155.ams2.redhat.com [10.36.5.155]) by int-mx13.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with SMTP id u0AEM5MJ002889; Sun, 10 Jan 2016 09:22:06 -0500 Date: Sun, 10 Jan 2016 16:22:05 +0200 From: "Michael S. Tsirkin" To: linux-kernel@vger.kernel.org Cc: Peter Zijlstra , Arnd Bergmann , linux-arch@vger.kernel.org, Andrew Cooper , Russell King - ARM Linux , virtualization@lists.linux-foundation.org, Stefano Stabellini , Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , Joe Perches , David Miller , linux-ia64@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, sparclinux@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-metag@vger.kernel.org, linux-mips@linux-mips.org, x86@kernel.org, user-mode-linux-devel@lists.sourceforge.net, adi-buildroot-devel@lists.sourceforge.net, linux-sh@vger.kernel.org, linux-xtensa@linux-xtensa.org, xen-devel@lists.xenproject.org, Martin Schwidefsky , Heiko Carstens , Ingo Molnar , Davidlohr Bueso , Christian Borntraeger Subject: [PATCH v3 40/41] s390: use generic memory barriers Message-ID: <1452426622-4471-41-git-send-email-mst@redhat.com> References: <1452426622-4471-1-git-send-email-mst@redhat.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <1452426622-4471-1-git-send-email-mst@redhat.com> X-Mutt-Fcc: =sent X-Scanned-By: MIMEDefang 2.68 on 10.5.11.26 Sender: sparclinux-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: sparclinux@vger.kernel.org The s390 kernel is SMP to 99.99%, we just didn't bother with a non-smp variant for the memory-barriers. If the generic header is used we'd get the non-smp version for free. It will save a small amount of text space for CONFIG_SMP=n. Suggested-by: Martin Schwidefsky Signed-off-by: Michael S. Tsirkin --- arch/s390/include/asm/barrier.h | 3 --- 1 file changed, 3 deletions(-) diff --git a/arch/s390/include/asm/barrier.h b/arch/s390/include/asm/barrier.h index fbd25b2..4d26fa4 100644 --- a/arch/s390/include/asm/barrier.h +++ b/arch/s390/include/asm/barrier.h @@ -29,9 +29,6 @@ #define __smp_mb() mb() #define __smp_rmb() rmb() #define __smp_wmb() wmb() -#define smp_mb() __smp_mb() -#define smp_rmb() __smp_rmb() -#define smp_wmb() __smp_wmb() #define __smp_store_release(p, v) \ do { \