From patchwork Wed Dec 30 13:24:43 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Michael S. Tsirkin" X-Patchwork-Id: 561741 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 5738D140BAD for ; Thu, 31 Dec 2015 00:29:03 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754951AbbL3NYv (ORCPT ); Wed, 30 Dec 2015 08:24:51 -0500 Received: from mx1.redhat.com ([209.132.183.28]:53106 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754940AbbL3NYr (ORCPT ); Wed, 30 Dec 2015 08:24:47 -0500 Received: from int-mx14.intmail.prod.int.phx2.redhat.com (int-mx14.intmail.prod.int.phx2.redhat.com [10.5.11.27]) by mx1.redhat.com (Postfix) with ESMTPS id 520878F262; Wed, 30 Dec 2015 13:24:47 +0000 (UTC) Received: from redhat.com (vpn1-7-19.ams2.redhat.com [10.36.7.19]) by int-mx14.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with SMTP id tBUDOhEJ017695; Wed, 30 Dec 2015 08:24:44 -0500 Date: Wed, 30 Dec 2015 15:24:43 +0200 From: "Michael S. Tsirkin" To: linux-kernel@vger.kernel.org Cc: Peter Zijlstra , Arnd Bergmann , linux-arch@vger.kernel.org, Andrew Cooper , virtualization@lists.linux-foundation.org, Stefano Stabellini , "David S. Miller" , Ingo Molnar , Michael Ellerman , Andrey Konovalov , sparclinux@vger.kernel.org Subject: [PATCH 07/34] sparc: reuse asm-generic/barrier.h Message-ID: <1451473761-30019-8-git-send-email-mst@redhat.com> References: <1451473761-30019-1-git-send-email-mst@redhat.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <1451473761-30019-1-git-send-email-mst@redhat.com> X-Mutt-Fcc: =sent X-Scanned-By: MIMEDefang 2.68 on 10.5.11.27 Sender: sparclinux-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: sparclinux@vger.kernel.org On sparc 64 bit dma_rmb, dma_wmb, smp_store_mb, smp_mb, smp_rmb, smp_wmb, read_barrier_depends and smp_read_barrier_depends match the asm-generic variants exactly. Drop the local definitions and pull in asm-generic/barrier.h instead. nop uses __asm__ __volatile but is otherwise identical to the generic version, drop that as well. This is in preparation to refactoring this code area. Note: nop() was in processor.h and not in barrier.h as on other architectures. Nothing seems to depend on it being there though. Signed-off-by: Michael S. Tsirkin --- arch/sparc/include/asm/barrier_32.h | 1 - arch/sparc/include/asm/barrier_64.h | 21 ++------------------- arch/sparc/include/asm/processor.h | 3 --- 3 files changed, 2 insertions(+), 23 deletions(-) diff --git a/arch/sparc/include/asm/barrier_32.h b/arch/sparc/include/asm/barrier_32.h index ae69eda..8059130 100644 --- a/arch/sparc/include/asm/barrier_32.h +++ b/arch/sparc/include/asm/barrier_32.h @@ -1,7 +1,6 @@ #ifndef __SPARC_BARRIER_H #define __SPARC_BARRIER_H -#include /* for nop() */ #include #endif /* !(__SPARC_BARRIER_H) */ diff --git a/arch/sparc/include/asm/barrier_64.h b/arch/sparc/include/asm/barrier_64.h index 14a9286..26c3f72 100644 --- a/arch/sparc/include/asm/barrier_64.h +++ b/arch/sparc/include/asm/barrier_64.h @@ -37,25 +37,6 @@ do { __asm__ __volatile__("ba,pt %%xcc, 1f\n\t" \ #define rmb() __asm__ __volatile__("":::"memory") #define wmb() __asm__ __volatile__("":::"memory") -#define dma_rmb() rmb() -#define dma_wmb() wmb() - -#define smp_store_mb(__var, __value) \ - do { WRITE_ONCE(__var, __value); membar_safe("#StoreLoad"); } while(0) - -#ifdef CONFIG_SMP -#define smp_mb() mb() -#define smp_rmb() rmb() -#define smp_wmb() wmb() -#else -#define smp_mb() __asm__ __volatile__("":::"memory") -#define smp_rmb() __asm__ __volatile__("":::"memory") -#define smp_wmb() __asm__ __volatile__("":::"memory") -#endif - -#define read_barrier_depends() do { } while (0) -#define smp_read_barrier_depends() do { } while (0) - #define smp_store_release(p, v) \ do { \ compiletime_assert_atomic_type(*p); \ @@ -74,4 +55,6 @@ do { \ #define smp_mb__before_atomic() barrier() #define smp_mb__after_atomic() barrier() +#include + #endif /* !(__SPARC64_BARRIER_H) */ diff --git a/arch/sparc/include/asm/processor.h b/arch/sparc/include/asm/processor.h index 2fe99e6..9da9646 100644 --- a/arch/sparc/include/asm/processor.h +++ b/arch/sparc/include/asm/processor.h @@ -5,7 +5,4 @@ #else #include #endif - -#define nop() __asm__ __volatile__ ("nop") - #endif