From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jerin Jacob Subject: [PATCH 3/6] eal/arm64: rte pause implementation for arm64 Date: Thu, 11 May 2017 15:40:43 +0530 Message-ID: <20170511101046.26456-3-jerin.jacob@caviumnetworks.com> References: <20170511101046.26456-1-jerin.jacob@caviumnetworks.com> Mime-Version: 1.0 Content-Type: text/plain Cc: thomas@monjalon.net, jianbo.liu@linaro.org, viktorin@rehivetech.com, Jerin Jacob To: dev@dpdk.org Return-path: Received: from NAM03-BY2-obe.outbound.protection.outlook.com (mail-by2nam03on0046.outbound.protection.outlook.com [104.47.42.46]) by dpdk.org (Postfix) with ESMTP id B967847CE for ; Thu, 11 May 2017 12:11:25 +0200 (CEST) In-Reply-To: <20170511101046.26456-1-jerin.jacob@caviumnetworks.com> List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" CC: Jianbo Liu Signed-off-by: Jerin Jacob --- lib/librte_eal/common/include/arch/arm/rte_pause.h | 4 ++ .../common/include/arch/arm/rte_pause_64.h | 55 ++++++++++++++++++++++ 2 files changed, 59 insertions(+) create mode 100644 lib/librte_eal/common/include/arch/arm/rte_pause_64.h diff --git a/lib/librte_eal/common/include/arch/arm/rte_pause.h b/lib/librte_eal/common/include/arch/arm/rte_pause.h index 0fe88aba9..9b79405e6 100644 --- a/lib/librte_eal/common/include/arch/arm/rte_pause.h +++ b/lib/librte_eal/common/include/arch/arm/rte_pause.h @@ -37,7 +37,11 @@ extern "C" { #endif +#ifdef RTE_ARCH_64 +#include +#else #include +#endif #ifdef __cplusplus } diff --git a/lib/librte_eal/common/include/arch/arm/rte_pause_64.h b/lib/librte_eal/common/include/arch/arm/rte_pause_64.h new file mode 100644 index 000000000..cae996de8 --- /dev/null +++ b/lib/librte_eal/common/include/arch/arm/rte_pause_64.h @@ -0,0 +1,55 @@ +/* + * BSD LICENSE + * + * Copyright(c) 2017 Cavium. 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 Cavium 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_PAUSE_ARM64_H_ +#define _RTE_PAUSE_ARM64_H_ + +#ifdef __cplusplus +extern "C" { +#endif + +#include +#include "generic/rte_pause.h" + +static inline void rte_pause(void) +{ + /* YIELD hints the CPU to switch to another thread if possible + * and executes as a NOP otherwise. + */ + asm volatile("yield" ::: "memory"); +} + +#ifdef __cplusplus +} +#endif + +#endif /* _RTE_PAUSE_ARM64_H_ */ -- 2.12.2