From mboxrd@z Thu Jan 1 00:00:00 1970 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) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=6wind-com.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:organization:user-agent :in-reply-to:references:mime-version:content-transfer-encoding; bh=jBYU0vkJaIgub8Y2z6yHXzB9HtH23zJCpn4+2S9003Y=; b=dqBHWEj3t4kEBYs+zuz5GuBcTzNA+r+QDKFOe1/05orG35iGEc4AErkIYUts5W3hfC vVAUuQEPXNk/gVcgH6k7dSyC58VX15orKBIyU1F5kl6JB2To24kUqXC/5NQQLJgRXxpF Tp0Mwb6JS9jYCYXTyK6VM/DHIGxHAk5QExvVeIES8Gfn6KSiNXvZqhO8GkUFnrB2YUEX Z6yk8KGv3Y3V2bNW8Y6NPt/Ff76zRAoyIrsvQcM4Hjme0XqxviMxyymqdDtLb86KWJpx ZO6+7D4TnRXXUFRuuLLl7cLBbNoxyiGdIk1boGp1JSLDmBt91LCxzQt+QpJYBf+T6wtO DPbA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:organization :user-agent:in-reply-to:references:mime-version :content-transfer-encoding; bh=jBYU0vkJaIgub8Y2z6yHXzB9HtH23zJCpn4+2S9003Y=; b=Rlprr2bt7Yg4WzFkd+LEebM5saTdfLKSFKIolp0P4GzA4ky96VoWEih+7nK5O+VUJC HEdkRSCFbtOqNV2nHubVPnsl8/izTzEtP96J+nWZOelQexr+4T1mrdt5NZ1fYBYkhBue xgYeBD84HI7QpI60nM7imWHKdi+tNeaa94rMFKT9T4TRfPAL07QoQ3p7zds+oAdF3UEg L6KypbsHQslw5CGEbFzTxIj+Q7O2Jg55g/LPSHgCJ/ijQpG+L1YjbSiWUeEKF46dcJ9r NKOdb+ovb4255v1LtQHVoGsOy0kprzuxewez21X7C9xbGRjBI3ZBplL+v4p9tl1aTCTO Zlbg== X-Gm-Message-State: AD7BkJLTpv9p8LTZdxSarf2o1YnqPKHCx7XR2doBoVt42MmLMzeiHfKQ6nhNF6jsQDCpKr7c X-Received: by 10.28.0.83 with SMTP id 80mr5753017wma.76.1458418591892; Sat, 19 Mar 2016 13:16:31 -0700 (PDT) Received: from xps13.localnet (91.111.75.86.rev.sfr.net. [86.75.111.91]) by smtp.gmail.com with ESMTPSA id 73sm4975345wmy.22.2016.03.19.13.16.30 (version=TLSv1/SSLv3 cipher=OTHER); Sat, 19 Mar 2016 13:16:31 -0700 (PDT) From: Thomas Monjalon To: Jan Viktorin Cc: dev@dpdk.org, jerin.jacob@caviumnetworks.com, tomaszx.kulasek@intel.com, jianbo.liu@linaro.org Date: Sat, 19 Mar 2016 21:14:57 +0100 Message-ID: <1752293.0PmA76bAcf@xps13> Organization: 6WIND User-Agent: KMail/4.14.10 (Linux/4.1.6-1-ARCH; KDE/4.14.11; x86_64; ; ) In-Reply-To: <1458417485-29436-5-git-send-email-viktorin@rehivetech.com> References: <1458417485-29436-1-git-send-email-viktorin@rehivetech.com> <1458417485-29436-5-git-send-email-viktorin@rehivetech.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" Subject: Re: [dpdk-dev] [PATCH v3 4/4] eal/arm: introduce CONFIG_RTE_ARCH_ARM_NEON_MEMCPY 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: , X-List-Received-Date: Sat, 19 Mar 2016 20:16:32 -0000 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.