From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thomas Monjalon Subject: Re: [PATCH v3 4/4] eal/arm: introduce CONFIG_RTE_ARCH_ARM_NEON_MEMCPY Date: Sat, 19 Mar 2016 21:14:57 +0100 Message-ID: <1752293.0PmA76bAcf@xps13> References: <1458417485-29436-1-git-send-email-viktorin@rehivetech.com> <1458417485-29436-5-git-send-email-viktorin@rehivetech.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7Bit Cc: dev@dpdk.org, jerin.jacob@caviumnetworks.com, tomaszx.kulasek@intel.com, jianbo.liu@linaro.org To: Jan Viktorin Return-path: Received: from mail-wm0-f48.google.com (mail-wm0-f48.google.com [74.125.82.48]) by dpdk.org (Postfix) with ESMTP id 0D6D02C6A for ; Sat, 19 Mar 2016 21:16:32 +0100 (CET) Received: by mail-wm0-f48.google.com with SMTP id l68so78355781wml.1 for ; Sat, 19 Mar 2016 13:16:32 -0700 (PDT) In-Reply-To: <1458417485-29436-5-git-send-email-viktorin@rehivetech.com> 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" 2016-03-19 20:58, Jan Viktorin: > The flag is used to enable memcpy optimizations in EAL. As it is not always > the performance benefit, the flag allows to disable it. Ideally the default should be to choose the best optimization. If it is not possible, it would help to have some comments explaining how to choose wether enabling NEON memcpy or not.