From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pl1-f196.google.com (mail-pl1-f196.google.com [209.85.214.196]) by dpdk.org (Postfix) with ESMTP id 3CD4B1B10D for ; Thu, 1 Nov 2018 18:26:11 +0100 (CET) Received: by mail-pl1-f196.google.com with SMTP id b9-v6so9254033pls.7 for ; Thu, 01 Nov 2018 10:26:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=networkplumber-org.20150623.gappssmtp.com; s=20150623; h=date:from:to:cc:subject:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=ja7WAlHfaBlMKWNZ/EzD9vc3EdsaGhHjDLv48Medfkk=; b=PalbLxgBy54QTVa6mkUnCq5NlvUjtxk2vONrcfKUTUCa5K9y+8zKXxCX0/b/AlYZjj 7AUgTzHNHNTnMcojYlrh9cw7k1qPOjDhoBEqAfLaVOEtyNC0piXdCMpQQ80rFmUN4ptq aahKRiIm1LDIwmMIR4EU40h5ZLTvj4XpxqjIZ773w3nYYOnmTk5qbWQpnCh6mZt40Nf+ ugWxeLnRTrUyBbsXzFjdzkSxiJVA4zV3cZODnazze7N2c2XO2I04imR+Q8MjZ5Lfafgo riM/3Pu7UBRoBQqRR9rmeKTuv7PNf6ZxbWuI5t3huYJW1G1hSHXCKRz9XZKXdX2adhOf zm0A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=ja7WAlHfaBlMKWNZ/EzD9vc3EdsaGhHjDLv48Medfkk=; b=YztVISRnqLZLaSzhFWRP/wrGz7iO8jKCyUx/MR9m12yL5CAGPQdPsjQ9ac/F7ZkuPC 5wDdBrk0tntq0PQLzXBlOBQiRttLrVj+k68DRPAhWgLlwaeWt1lswV0x8LR/jGRnrUCN wD/REfZL/9kTLOIcX7PBOA1L48iEzlWQh2B+Afh0Qtq+0lN+qiapfKlBZ95eZ28yQMcG LJaZvrkuZzB1naaOB0XTIdJ1wQoeOjfM/AT3aJWFer7BP68BXQmWHpU6KIQYhUxZxlaW MYbUklVugd4GzhKcMPyzDOKCKOJ20fbb6PcVgE7i5a/RqhLg0zKZuOX1J1v4JjufvBdz 2LzA== X-Gm-Message-State: AGRZ1gInl6zeVPJ8wk+cmYTEiEkqqcHKo/Ic4y4R9hD7ktl0ATTlUfzP t9v2ttH8pYU5UagAh7kM1HF6VA== X-Google-Smtp-Source: AJdET5fTkgnTM7lqA6kyCMfvW/cuaqIdwX4Gc9pNjmWTIYYuuSj6rWZC4GLgRXEJ3G8yJROaWp0Wrw== X-Received: by 2002:a17:902:8e8a:: with SMTP id bg10-v6mr8557213plb.214.1541093170300; Thu, 01 Nov 2018 10:26:10 -0700 (PDT) Received: from xeon-e3 (204-195-22-127.wavecable.com. [204.195.22.127]) by smtp.gmail.com with ESMTPSA id i13-v6sm15059457pgs.51.2018.11.01.10.26.09 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Thu, 01 Nov 2018 10:26:10 -0700 (PDT) Date: Thu, 1 Nov 2018 10:26:01 -0700 From: Stephen Hemminger To: Gavin Hu Cc: dev@dpdk.org, thomas@monjalon.net, olivier.matz@6wind.com, chaozhu@linux.vnet.ibm.com, bruce.richardson@intel.com, konstantin.ananyev@intel.com, jerin.jacob@caviumnetworks.com, Honnappa.Nagarahalli@arm.com, stable@dpdk.org Message-ID: <20181101102601.7933b8d1@xeon-e3> In-Reply-To: <1541066031-29125-3-git-send-email-gavin.hu@arm.com> References: <1541066031-29125-1-git-send-email-gavin.hu@arm.com> <1541066031-29125-3-git-send-email-gavin.hu@arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Subject: Re: [dpdk-dev] [PATCH v4 2/2] ring: move the atomic load of head above the loop X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 01 Nov 2018 17:26:11 -0000 On Thu, 1 Nov 2018 17:53:51 +0800 Gavin Hu wrote: > +* **Updated the ring library with C11 memory model.** > + > + Updated the ring library with C11 memory model including the following changes: > + > + * Synchronize the load and store of the tail > + * Move the atomic load of head above the loop > + Does this really need to be in the release notes? Is it a user visible change or just an internal/optimization and fix.