From patchwork Mon Oct 26 16:37:28 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jan Viktorin X-Patchwork-Id: 8024 Return-Path: X-Original-To: patchwork@dpdk.org Delivered-To: patchwork@dpdk.org Received: from [92.243.14.124] (localhost [IPv6:::1]) by dpdk.org (Postfix) with ESMTP id 3A90B8E6E; Mon, 26 Oct 2015 17:39:40 +0100 (CET) Received: from wes1-so1.wedos.net (wes1-so1.wedos.net [46.28.106.15]) by dpdk.org (Postfix) with ESMTP id E108C8D89 for ; Mon, 26 Oct 2015 17:39:30 +0100 (CET) Received: from pcviktorin.fit.vutbr.cz (pcviktorin.fit.vutbr.cz [147.229.13.147]) by wes1-so1.wedos.net (Postfix) with ESMTPSA id 3nl21t5P78z4xd; Mon, 26 Oct 2015 17:39:30 +0100 (CET) From: Jan Viktorin To: Thomas Monjalon , David Hunt , dev@dpdk.org Date: Mon, 26 Oct 2015 17:37:28 +0100 Message-Id: <1445877458-31052-7-git-send-email-viktorin@rehivetech.com> X-Mailer: git-send-email 2.6.1 In-Reply-To: <1445877458-31052-1-git-send-email-viktorin@rehivetech.com> References: <1445877458-31052-1-git-send-email-viktorin@rehivetech.com> Cc: Vlastimil Kosar Subject: [dpdk-dev] [PATCH v2 06/16] eal/arm: prefetch operations for ARM X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" From: Vlastimil Kosar This patch adds architecture specific prefetch operations for ARM architecture. It utilizes the pld instruction that starts filling the appropriate cache line without blocking. Signed-off-by: Vlastimil Kosar Signed-off-by: Jan Viktorin --- .../common/include/arch/arm/rte_prefetch.h | 61 ++++++++++++++++++++++ 1 file changed, 61 insertions(+) create mode 100644 lib/librte_eal/common/include/arch/arm/rte_prefetch.h diff --git a/lib/librte_eal/common/include/arch/arm/rte_prefetch.h b/lib/librte_eal/common/include/arch/arm/rte_prefetch.h new file mode 100644 index 0000000..8d75fe6 --- /dev/null +++ b/lib/librte_eal/common/include/arch/arm/rte_prefetch.h @@ -0,0 +1,61 @@ +/* + * BSD LICENSE + * + * Copyright(c) 2015 RehiveTech. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * * Neither the name of RehiveTech nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef _RTE_PREFETCH_ARM_H_ +#define _RTE_PREFETCH_ARM_H_ + +#ifdef __cplusplus +extern "C" { +#endif + +#include "generic/rte_prefetch.h" + +static inline void rte_prefetch0(const volatile void *p) +{ + asm volatile ("pld [%[p]]" : : [p] "r" (p)); +} + +static inline void rte_prefetch1(const volatile void *p) +{ + asm volatile ("pld [%[p]]" : : [p] "r" (p)); +} + +static inline void rte_prefetch2(const volatile void *p) +{ + asm volatile ("pld [%[p]]" : : [p] "r" (p)); +} + +#ifdef __cplusplus +} +#endif + +#endif /* _RTE_PREFETCH_ARM_H_ */