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GET /api/patches/69887/?format=api
{ "id": 69887, "url": "https://patches.dpdk.org/api/patches/69887/?format=api", "web_url": "https://patches.dpdk.org/project/dpdk/patch/20200506215847.7628-5-dharmik.thakkar@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": "<20200506215847.7628-5-dharmik.thakkar@arm.com>", "list_archive_url": "https://inbox.dpdk.org/dev/20200506215847.7628-5-dharmik.thakkar@arm.com", "date": "2020-05-06T21:58:47", "name": "[5/5] doc: add aarch64 generic counter section", "commit_ref": null, "pull_url": null, "state": "superseded", "archived": true, "hash": "c67432396767bde90673aab74122d9ce68b4e866", "submitter": { "id": 1108, "url": "https://patches.dpdk.org/api/people/1108/?format=api", "name": "Dharmik Thakkar", "email": "dharmik.thakkar@arm.com" }, "delegate": null, "mbox": "https://patches.dpdk.org/project/dpdk/patch/20200506215847.7628-5-dharmik.thakkar@arm.com/mbox/", "series": [ { "id": 9891, "url": "https://patches.dpdk.org/api/series/9891/?format=api", "web_url": "https://patches.dpdk.org/project/dpdk/list/?series=9891", "date": "2020-05-06T21:58:43", "name": "[1/5] app/testpmd: print clock with CPU cycles per pkt", "version": 1, "mbox": "https://patches.dpdk.org/series/9891/mbox/" } ], "comments": "https://patches.dpdk.org/api/patches/69887/comments/", "check": "fail", "checks": "https://patches.dpdk.org/api/patches/69887/checks/", "tags": {}, "related": [], "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 0E235A034E;\n\tWed, 6 May 2020 23:59:44 +0200 (CEST)", "from [92.243.14.124] (localhost [127.0.0.1])\n\tby dpdk.org (Postfix) with ESMTP id B3F9C1DB4D;\n\tWed, 6 May 2020 23:59:32 +0200 (CEST)", "from foss.arm.com (foss.arm.com [217.140.110.172])\n by dpdk.org (Postfix) with ESMTP id D75B21DB3C\n for <dev@dpdk.org>; Wed, 6 May 2020 23:59:28 +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 6609411D4;\n Wed, 6 May 2020 14:59:28 -0700 (PDT)", "from dp6132.usa.Arm.com (dp6132.usa.arm.com [10.118.91.150])\n by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 6080D3F305;\n Wed, 6 May 2020 14:59:28 -0700 (PDT)" ], "From": "Dharmik Thakkar <dharmik.thakkar@arm.com>", "To": "John McNamara <john.mcnamara@intel.com>,\n Marko Kovacevic <marko.kovacevic@intel.com>", "Cc": "dev@dpdk.org,\n\tnd@arm.com,\n\tDharmik Thakkar <dharmik.thakkar@arm.com>", "Date": "Wed, 6 May 2020 21:58:47 +0000", "Message-Id": "<20200506215847.7628-5-dharmik.thakkar@arm.com>", "X-Mailer": "git-send-email 2.17.1", "In-Reply-To": "<20200506215847.7628-1-dharmik.thakkar@arm.com>", "References": "<20200506215847.7628-1-dharmik.thakkar@arm.com>", "Subject": "[dpdk-dev] [PATCH 5/5] doc: add aarch64 generic counter section", "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": "Add a separate section for low-resolution generic counter\nfor ARM64 profiling methods.\n\nSigned-off-by: Dharmik Thakkar <dharmik.thakkar@arm.com>\nReviewed-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>\nReviewed-by: Phil Yang <phil.yang@arm.com>\n---\n doc/guides/prog_guide/profile_app.rst | 11 ++++++++---\n 1 file changed, 8 insertions(+), 3 deletions(-)", "diff": "diff --git a/doc/guides/prog_guide/profile_app.rst b/doc/guides/prog_guide/profile_app.rst\nindex a36ebef4db99..e5d0e9079e11 100644\n--- a/doc/guides/prog_guide/profile_app.rst\n+++ b/doc/guides/prog_guide/profile_app.rst\n@@ -57,11 +57,16 @@ For more derails refer to the\n `ARM64 specific PMU events enumeration <http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.100095_0002_04_en/way1382543438508.html>`_.\n \n \n-High-resolution cycle counter\n-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n+Low-resolution generic counter\n+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n \n The default ``cntvct_el0`` based ``rte_rdtsc()`` provides a portable means to\n-get a wall clock counter in user space. Typically it runs at <= 100MHz.\n+get a wall clock counter in user space. Typically it runs at a lower clock frequency than the CPU clock frequency.\n+Cycles counted using this method should be scaled to CPU clock frequency.\n+\n+\n+High-resolution cycle counter\n+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n \n The alternative method to enable ``rte_rdtsc()`` for a high resolution wall\n clock counter is through the ARMv8 PMU subsystem. The PMU cycle counter runs\n", "prefixes": [ "5/5" ] }