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{
    "id": 119767,
    "url": "http://patchwork.dpdk.org/api/covers/119767/?format=api",
    "web_url": "http://patchwork.dpdk.org/project/dpdk/cover/20221111072649.3304429-1-feifei.wang2@arm.com/",
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    "msgid": "<20221111072649.3304429-1-feifei.wang2@arm.com>",
    "list_archive_url": "https://inbox.dpdk.org/dev/20221111072649.3304429-1-feifei.wang2@arm.com",
    "date": "2022-11-11T07:26:46",
    "name": "[v3,0/3] Enable PMD power management on Arm",
    "submitter": {
        "id": 1771,
        "url": "http://patchwork.dpdk.org/api/people/1771/?format=api",
        "name": "Feifei Wang",
        "email": "feifei.wang2@arm.com"
    },
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        {
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            "web_url": "http://patchwork.dpdk.org/project/dpdk/list/?series=25723",
            "date": "2022-11-11T07:26:46",
            "name": "Enable PMD power management on Arm",
            "version": 3,
            "mbox": "http://patchwork.dpdk.org/series/25723/mbox/"
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    ],
    "comments": "http://patchwork.dpdk.org/api/covers/119767/comments/",
    "headers": {
        "Return-Path": "<dev-bounces@dpdk.org>",
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        "Received": [
            "from mails.dpdk.org (mails.dpdk.org [217.70.189.124])\n\tby inbox.dpdk.org (Postfix) with ESMTP id 05CB8A0542;\n\tFri, 11 Nov 2022 08:26:59 +0100 (CET)",
            "from mails.dpdk.org (localhost [127.0.0.1])\n\tby mails.dpdk.org (Postfix) with ESMTP id A2B7A40141;\n\tFri, 11 Nov 2022 08:26:59 +0100 (CET)",
            "from foss.arm.com (foss.arm.com [217.140.110.172])\n by mails.dpdk.org (Postfix) with ESMTP id 38D71400EF\n for <dev@dpdk.org>; Fri, 11 Nov 2022 08:26:58 +0100 (CET)",
            "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 A49E31FB;\n Thu, 10 Nov 2022 23:27:03 -0800 (PST)",
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        ],
        "From": "Feifei Wang <feifei.wang2@arm.com>",
        "To": "",
        "Cc": "dev@dpdk.org, david.hunt@intel.com, david.marchand@redhat.com,\n thomas@monjalon.net, stephen@networkplumber.org, nd@arm.com,\n Feifei Wang <feifei.wang2@arm.com>",
        "Subject": "[PATCH v3 0/3] Enable PMD power management on Arm",
        "Date": "Fri, 11 Nov 2022 15:26:46 +0800",
        "Message-Id": "<20221111072649.3304429-1-feifei.wang2@arm.com>",
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        "In-Reply-To": "<20220825064251.2637274-1-feifei.wang2@arm.com>",
        "References": "<20220825064251.2637274-1-feifei.wang2@arm.com>",
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        "Errors-To": "dev-bounces@dpdk.org"
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    "content": "For Arm aarch, use WFE instructions to enable PMD power management.\n\nTest Results:\ndynamic instructions over 1sec\twithout wfe\twith wfe\tpercentage\nampere-altra\t\t\t6,298,483,712\t9,117,624\t-99.855%\nthunderx2\t\t\t6,990,909,373\t3,247,226\t-99.954%\n\nWhen power efficient PMD is enabled by using WFE on Arm, if no pkts\nreceived, the instructions that CPU executes is reduced by 99%.\n\nV2:\n1. move rte_wake_up API out of signal_exit(David Marchand, Thomas, Stephen)\n2. Add test results when using wfe on ARM server\n\nv3:\n1. make code cleaner (Stephen)\n\nFeifei Wang (3):\n  eal: add 8 bits case for wait scheme\n  eal: add power mgmt support on Arm\n  examples/l3fwd-power: enable PMD power monitor on Arm\n\n examples/l3fwd-power/main.c        | 25 +++++++++++\n lib/eal/arm/include/rte_pause_64.h | 32 +++++++++++--\n lib/eal/arm/rte_cpuflags.c         |  5 +++\n lib/eal/arm/rte_power_intrinsics.c | 72 ++++++++++++++++++++++++++++--\n 4 files changed, 127 insertions(+), 7 deletions(-)"
}