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GET /api/patches/49107/?format=api
{ "id": 49107, "url": "https://patches.dpdk.org/api/patches/49107/?format=api", "web_url": "https://patches.dpdk.org/project/dpdk/patch/20181219082113.24455-1-maxime.coquelin@redhat.com/", "project": { "id": 1, "url": "https://patches.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": "<20181219082113.24455-1-maxime.coquelin@redhat.com>", "list_archive_url": "https://inbox.dpdk.org/dev/20181219082113.24455-1-maxime.coquelin@redhat.com", "date": "2018-12-19T08:21:09", "name": "[v2,0/4] vhost: add missing barriers, move prefetching", "commit_ref": null, "pull_url": null, "state": null, "archived": false, "hash": null, "submitter": { "id": 512, "url": "https://patches.dpdk.org/api/people/512/?format=api", "name": "Maxime Coquelin", "email": "maxime.coquelin@redhat.com" }, "delegate": null, "mbox": "https://patches.dpdk.org/project/dpdk/patch/20181219082113.24455-1-maxime.coquelin@redhat.com/mbox/", "series": [], "comments": "https://patches.dpdk.org/api/patches/49107/comments/", "check": "pending", "checks": "https://patches.dpdk.org/api/patches/49107/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<dev-bounces@dpdk.org>", "X-Original-To": "patchwork@dpdk.org", "Delivered-To": "patchwork@dpdk.org", "Received": [ "from [92.243.14.124] (localhost [127.0.0.1])\n\tby dpdk.org (Postfix) with ESMTP id 117611B6D1;\n\tWed, 19 Dec 2018 09:21:27 +0100 (CET)", "from mx1.redhat.com (mx1.redhat.com [209.132.183.28])\n\tby dpdk.org (Postfix) with ESMTP id B6FA31B674;\n\tWed, 19 Dec 2018 09:21:25 +0100 (CET)", "from smtp.corp.redhat.com\n\t(int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13])\n\t(using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits))\n\t(No client certificate requested)\n\tby mx1.redhat.com (Postfix) with ESMTPS id 4EC9C1B98;\n\tWed, 19 Dec 2018 08:21:24 +0000 (UTC)", "from localhost.localdomain (ovpn-112-26.ams2.redhat.com\n\t[10.36.112.26])\n\tby smtp.corp.redhat.com (Postfix) with ESMTP id B828A17DD3;\n\tWed, 19 Dec 2018 08:21:16 +0000 (UTC)" ], "From": "Maxime Coquelin <maxime.coquelin@redhat.com>", "To": "dev@dpdk.org, i.maximets@samsung.com, tiwei.bie@intel.com,\n\tzhihong.wang@intel.com, jasowang@redhat.com, mst@redhat.com", "Cc": "stable@dpdk.org,\n\tMaxime Coquelin <maxime.coquelin@redhat.com>", "Date": "Wed, 19 Dec 2018 09:21:09 +0100", "Message-Id": "<20181219082113.24455-1-maxime.coquelin@redhat.com>", "X-Scanned-By": "MIMEDefang 2.79 on 10.5.11.13", "X-Greylist": "Sender IP whitelisted, not delayed by milter-greylist-4.5.16\n\t(mx1.redhat.com [10.5.110.30]); Wed, 19 Dec 2018 08:21:24 +0000 (UTC)", "Subject": "[dpdk-dev] [PATCH v2 0/4] vhost: add missing barriers,\n\tmove prefetching", "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\t<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\t<mailto:dev-request@dpdk.org?subject=subscribe>", "Errors-To": "dev-bounces@dpdk.org", "Sender": "\"dev\" <dev-bounces@dpdk.org>" }, "content": "This series adds missing read barriers after reading avail index\nfor split ring and desc flags for packed ring.\n\nAlso, it turns out that some descriptors prefetching are either\nbadly placed, or useless, last part of the series fixes that.\n\nWith the series applied, I get between 0 and 4% gain depending\non the benchmark (testpmd txonly/rxonly/io).\n\nThanks to Jason for reporting the missing read barriers.\n\nChanges since v1:\n=================\n- Drop volatile removal patch (Ilya)\n- Improve commit messages for RMB patches (Ilya)\n\nMaxime Coquelin (4):\n vhost: enforce avail index and desc read ordering\n vhost: enforce desc flags and content read ordering\n vhost: prefetch descriptor after the read barrier\n vhost: remove useless prefetch for packed ring descriptor\n\n lib/librte_vhost/virtio_net.c | 27 ++++++++++++++++++++++-----\n 1 file changed, 22 insertions(+), 5 deletions(-)", "diff": null, "prefixes": [ "v2", "0/4" ] }