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: 7996601 Return-Path: X-Original-To: patchwork-xen-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id F0FAEBEEE5 for ; Sun, 10 Jan 2016 14:24:43 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 3E7112015A for ; Sun, 10 Jan 2016 14:24:43 +0000 (UTC) Received: from lists.xen.org (lists.xenproject.org [50.57.142.19]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 7578920204 for ; Sun, 10 Jan 2016 14:24:42 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=lists.xen.org) by lists.xen.org with esmtp (Exim 4.72) (envelope-from ) id 1aIGss-00033g-S8; Sun, 10 Jan 2016 14:22:18 +0000 Received: from mail6.bemta14.messagelabs.com ([193.109.254.103]) by lists.xen.org with esmtp (Exim 4.72) (envelope-from ) id 1aIGsr-00031f-2m for xen-devel@lists.xenproject.org; Sun, 10 Jan 2016 14:22:17 +0000 Received: from [193.109.254.147] by server-15.bemta-14.messagelabs.com id 83/B6-10115-81962965; Sun, 10 Jan 2016 14:22:16 +0000 X-Env-Sender: mst@redhat.com X-Msg-Ref: server-16.tower-27.messagelabs.com!1452435734!15768275!1 X-Originating-IP: [209.132.183.28] X-SpamReason: No, hits=0.0 required=7.0 tests=sa_preprocessor: VHJ1c3RlZCBJUDogMjA5LjEzMi4xODMuMjggPT4gNTQwNjQ=\n X-StarScan-Received: X-StarScan-Version: 7.35.1; banners=-,-,- X-VirusChecked: Checked Received: (qmail 41791 invoked from network); 10 Jan 2016 14:22:15 -0000 Received: from mx1.redhat.com (HELO mx1.redhat.com) (209.132.183.28) by server-16.tower-27.messagelabs.com with DHE-RSA-AES256-GCM-SHA384 encrypted SMTP; 10 Jan 2016 14:22:15 -0000 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 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 Cc: linux-mips@linux-mips.org, linux-ia64@vger.kernel.org, linux-sh@vger.kernel.org, Peter Zijlstra , Heiko Carstens , virtualization@lists.linux-foundation.org, "H. Peter Anvin" , sparclinux@vger.kernel.org, Ingo Molnar , linux-arch@vger.kernel.org, linux-s390@vger.kernel.org, Davidlohr Bueso , Russell King - ARM Linux , Arnd Bergmann , x86@kernel.org, Christian Borntraeger , xen-devel@lists.xenproject.org, Ingo Molnar , linux-xtensa@linux-xtensa.org, user-mode-linux-devel@lists.sourceforge.net, Stefano Stabellini , adi-buildroot-devel@lists.sourceforge.net, Martin Schwidefsky , Thomas Gleixner , linux-metag@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Andrew Cooper , Joe Perches , linuxppc-dev@lists.ozlabs.org, David Miller Subject: [Xen-devel] [PATCH v3 40/41] s390: use generic memory barriers X-BeenThere: xen-devel@lists.xen.org X-Mailman-Version: 2.1.13 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP 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 { \