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{ "id": 73677, "url": "http://patchwork.dpdk.org/api/covers/73677/?format=api", "web_url": "http://patchwork.dpdk.org/project/dpdk/cover/20200710023850.43898-1-joyce.kong@arm.com/", "project": { "id": 1, "url": "http://patchwork.dpdk.org/api/projects/1/?format=api", "name": "DPDK", "link_name": "dpdk", "list_id": "dev.dpdk.org", "list_email": "dev@dpdk.org", "web_url": "http://core.dpdk.org", "scm_url": "git://dpdk.org/dpdk", "webscm_url": "http://git.dpdk.org/dpdk", "list_archive_url": "https://inbox.dpdk.org/dev", "list_archive_url_format": "https://inbox.dpdk.org/dev/{}", "commit_url_format": "" }, "msgid": "<20200710023850.43898-1-joyce.kong@arm.com>", "list_archive_url": "https://inbox.dpdk.org/dev/20200710023850.43898-1-joyce.kong@arm.com", "date": "2020-07-10T02:38:47", "name": "[v3,0/3] restrict pointer aliasing with a common wrapper", "submitter": { "id": 970, "url": "http://patchwork.dpdk.org/api/people/970/?format=api", "name": "Joyce Kong", "email": "joyce.kong@arm.com" }, "mbox": "http://patchwork.dpdk.org/project/dpdk/cover/20200710023850.43898-1-joyce.kong@arm.com/mbox/", "series": [ { "id": 10937, "url": "http://patchwork.dpdk.org/api/series/10937/?format=api", "web_url": "http://patchwork.dpdk.org/project/dpdk/list/?series=10937", "date": "2020-07-10T02:38:47", "name": "restrict pointer aliasing with a common wrapper", "version": 3, "mbox": "http://patchwork.dpdk.org/series/10937/mbox/" } ], "comments": "http://patchwork.dpdk.org/api/covers/73677/comments/", "headers": { "Return-Path": "<dev-bounces@dpdk.org>", "X-Original-To": "patchwork@inbox.dpdk.org", "Delivered-To": "patchwork@inbox.dpdk.org", "Received": [ "from dpdk.org (dpdk.org [92.243.14.124])\n\tby inbox.dpdk.org (Postfix) with ESMTP id 651A9A0526;\n\tFri, 10 Jul 2020 04:41:54 +0200 (CEST)", "from [92.243.14.124] (localhost [127.0.0.1])\n\tby dpdk.org (Postfix) with ESMTP id 724F41DCCF;\n\tFri, 10 Jul 2020 04:41:53 +0200 (CEST)", "from foss.arm.com (foss.arm.com [217.140.110.172])\n by dpdk.org (Postfix) with ESMTP id 947D91DA9A\n for <dev@dpdk.org>; Fri, 10 Jul 2020 04:41:51 +0200 (CEST)", "from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14])\n by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id E28EF31B;\n Thu, 9 Jul 2020 19:41:50 -0700 (PDT)", "from net-arm-thunderx2-03.shanghai.arm.com\n (net-arm-thunderx2-03.shanghai.arm.com [10.169.208.204])\n by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id F26BB3F9AB;\n Thu, 9 Jul 2020 19:41:45 -0700 (PDT)" ], "From": "Joyce Kong <joyce.kong@arm.com>", "To": "maxime.coquelin@redhat.com, jerinj@marvell.com, zhihong.wang@intel.com,\n amorenoz@redhat.com, mb@smartsharesystems.com, xiaolong.ye@intel.com,\n beilei.xing@intel.com, jia.guo@intel.com, john.mcnamara@intel.com,\n matan@mellanox.com, shahafs@mellanox.com, viacheslavo@mellanox.com,\n honnappa.nagarahalli@arm.com, phil.yang@arm.com, ruifeng.wang@arm.com", "Cc": "dev@dpdk.org,\n\tnd@arm.com", "Date": "Fri, 10 Jul 2020 10:38:47 +0800", "Message-Id": "<20200710023850.43898-1-joyce.kong@arm.com>", "X-Mailer": "git-send-email 2.27.0", "In-Reply-To": "<20200611033248.39049-1-joyce.kong@arm.com>", "References": "<20200611033248.39049-1-joyce.kong@arm.com>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "Subject": "[dpdk-dev] [PATCH v3 0/3] restrict pointer aliasing with a common\n\twrapper", "X-BeenThere": "dev@dpdk.org", "X-Mailman-Version": "2.1.15", "Precedence": "list", "List-Id": "DPDK patches and discussions <dev.dpdk.org>", "List-Unsubscribe": "<https://mails.dpdk.org/options/dev>,\n <mailto:dev-request@dpdk.org?subject=unsubscribe>", "List-Archive": "<http://mails.dpdk.org/archives/dev/>", "List-Post": "<mailto:dev@dpdk.org>", "List-Help": "<mailto:dev-request@dpdk.org?subject=help>", "List-Subscribe": "<https://mails.dpdk.org/listinfo/dev>,\n <mailto:dev-request@dpdk.org?subject=subscribe>", "Errors-To": "dev-bounces@dpdk.org", "Sender": "\"dev\" <dev-bounces@dpdk.org>" }, "content": "As the 'restrict' keyword is recognized in C99, this patchset is to\nadd a wrapper defining '__rte_restrict' which can be supported by\nall compilers. Then replace the existing 'restrict' and '__restrict'\nin different vpmds, and optimize vhost/virtio with restricted pointer\naliasing for more aggressive loops vectorization.\n\nThe vhost/virtio optimization patches were benchmarked by running PVP\ncase on ThunderX2 platform and showed positive performance results.\n\nv3:\n 1.Correct the compiling issue on GCC 4.8.5.\n 2.Squash the replacement patches and wrapper definition into one\n patch.(suggested by David Marchand)\n\nv2:\n Add a common wrapper for restricted pointer aliasing to be supported\n by all compilers.(suggested by Maxime Coquelin)\n\nJoyce Kong (3):\n lib/eal: add a common wrapper for restricted pointers\n net/virtio: restrict pointer aliasing for NEON vpmd\n lib/vhost: restrict pointer aliasing for packed vpmd\n\n drivers/net/i40e/i40e_rxtx_vec_neon.c | 17 +-\n drivers/net/mlx5/mlx5_rxtx.c | 208 +++++++++---------\n drivers/net/virtio/virtio_rxtx_simple_neon.c | 5 +-\n .../pthread_shim/pthread_shim.c | 12 +-\n lib/librte_eal/include/rte_common.h | 10 +\n lib/librte_vhost/virtio_net.c | 14 +-\n 6 files changed, 139 insertions(+), 127 deletions(-)" }