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{
    "id": 69335,
    "url": "https://patches.dpdk.org/api/covers/69335/?format=api",
    "web_url": "https://patches.dpdk.org/project/dpdk/cover/20200426083909.897-1-gavin.hu@arm.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": "<20200426083909.897-1-gavin.hu@arm.com>",
    "list_archive_url": "https://inbox.dpdk.org/dev/20200426083909.897-1-gavin.hu@arm.com",
    "date": "2020-04-26T08:39:07",
    "name": "[v2,0/2] Use WFE for spinlock and ring",
    "submitter": {
        "id": 1018,
        "url": "https://patches.dpdk.org/api/people/1018/?format=api",
        "name": "Gavin Hu",
        "email": "gavin.hu@arm.com"
    },
    "mbox": "https://patches.dpdk.org/project/dpdk/cover/20200426083909.897-1-gavin.hu@arm.com/mbox/",
    "series": [
        {
            "id": 9643,
            "url": "https://patches.dpdk.org/api/series/9643/?format=api",
            "web_url": "https://patches.dpdk.org/project/dpdk/list/?series=9643",
            "date": "2020-04-26T08:39:07",
            "name": "Use WFE for spinlock and ring",
            "version": 2,
            "mbox": "https://patches.dpdk.org/series/9643/mbox/"
        }
    ],
    "comments": "https://patches.dpdk.org/api/covers/69335/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 E6E6CA00C5;\n\tSun, 26 Apr 2020 10:39:22 +0200 (CEST)",
            "from [92.243.14.124] (localhost [127.0.0.1])\n\tby dpdk.org (Postfix) with ESMTP id 2AEC41C010;\n\tSun, 26 Apr 2020 10:39:22 +0200 (CEST)",
            "from foss.arm.com (foss.arm.com [217.140.110.172])\n by dpdk.org (Postfix) with ESMTP id C1B091C00D\n for <dev@dpdk.org>; Sun, 26 Apr 2020 10:39:20 +0200 (CEST)",
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            "from net-arm-thunderx2-01.shanghai.arm.com\n (net-arm-thunderx2-01.shanghai.arm.com [10.169.41.214])\n by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id B87563F6CF;\n Sun, 26 Apr 2020 01:39:17 -0700 (PDT)"
        ],
        "From": "Gavin Hu <gavin.hu@arm.com>",
        "To": "dev@dpdk.org",
        "Cc": "nd@arm.com, david.marchand@redhat.com, thomas@monjalon.net,\n jerinj@marvell.com, Honnappa.Nagarahalli@arm.com, Ruifeng.Wang@arm.com,\n Phil.Yang@arm.com, Joyce.Kong@arm.com",
        "Date": "Sun, 26 Apr 2020 16:39:07 +0800",
        "Message-Id": "<20200426083909.897-1-gavin.hu@arm.com>",
        "X-Mailer": "git-send-email 2.17.1",
        "In-Reply-To": "<20200424070741.16619-1-gavin.hu@arm.com>",
        "References": "<20200424070741.16619-1-gavin.hu@arm.com>",
        "Subject": "[dpdk-dev] [PATCH v2 0/2] Use WFE for spinlock and ring",
        "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": "The rte_wait_until_equal_xxx APIs abstract the functionality of 'polling\nfor a memory location to become equal to a given value'[1].\n\nUse the API for the rte spinlock and ring implementations.\n\n[1] http://patches.dpdk.org/cover/62703/\n\nGavin Hu (2):\n  spinlock: use wfe to reduce contention on aarch64\n  ring: use wfe to wait for ring tail update on aarch64\n\n lib/librte_eal/include/generic/rte_spinlock.h | 4 ++--\n lib/librte_ring/rte_ring_c11_mem.h            | 4 ++--\n lib/librte_ring/rte_ring_generic.h            | 3 +--\n 3 files changed, 5 insertions(+), 6 deletions(-)"
}