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Fri, 17 Jul 2020 04:36:00 -0400 (EDT) From: Thomas Monjalon To: Phil Yang Cc: john.mcnamara@intel.com, Honnappa.Nagarahalli@arm.com, drc@linux.vnet.ibm.com, dev@dpdk.org, david.marchand@redhat.com, jerinj@marvell.com, konstantin.ananyev@intel.com, Ola.Liljedahl@arm.com, bruce.richardson@intel.com, Ruifeng.Wang@arm.com, nd@arm.com Date: Fri, 17 Jul 2020 10:35:58 +0200 Message-ID: <6407830.sh6FQpANWY@thomas> In-Reply-To: <1594962519-20619-3-git-send-email-phil.yang@arm.com> References: <1594875225-5850-1-git-send-email-phil.yang@arm.com> <1594962519-20619-1-git-send-email-phil.yang@arm.com> <1594962519-20619-3-git-send-email-phil.yang@arm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" Subject: Re: [dpdk-dev] [PATCH v9 2/3] devtools: prevent use of rte atomic APIs in future patches 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: , Errors-To: dev-bounces@dpdk.org Sender: "dev" 17/07/2020 07:08, Phil Yang: > In order to deprecate the rte_atomic and rte_smp barrier APIs, prevent > the patches from using these APIs and __sync builtins in new code. > > On x86 the __atomic_thread_fence(__ATOMIC_SEQ_CST) is quite expensive > for SMP case. Flag the new code which use __atomic_thread_fence API. When receiving such message error, I would look at the explanations in the git history. Unfortunately this commit log does not reference the documentation. Please add a link and give the 4 direct replacements in this commit log.