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GET /api/patches/97759/?format=api
{ "id": 97759, "url": "http://patchwork.dpdk.org/api/patches/97759/?format=api", "web_url": "http://patchwork.dpdk.org/project/dpdk/patch/20210902053253.3017858-6-feifei.wang2@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": "<20210902053253.3017858-6-feifei.wang2@arm.com>", "list_archive_url": "https://inbox.dpdk.org/dev/20210902053253.3017858-6-feifei.wang2@arm.com", "date": "2021-09-02T05:32:53", "name": "[RFC,v1,5/5] lib/distributor: use wait until scheme", "commit_ref": null, "pull_url": null, "state": "superseded", "archived": true, "hash": "e302b12a56f63915f56e1c059d245574f2179921", "submitter": { "id": 1771, "url": "http://patchwork.dpdk.org/api/people/1771/?format=api", "name": "Feifei Wang", "email": "feifei.wang2@arm.com" }, "delegate": { "id": 24651, "url": "http://patchwork.dpdk.org/api/users/24651/?format=api", "username": "dmarchand", "first_name": "David", "last_name": "Marchand", "email": "david.marchand@redhat.com" }, "mbox": "http://patchwork.dpdk.org/project/dpdk/patch/20210902053253.3017858-6-feifei.wang2@arm.com/mbox/", "series": [ { "id": 18613, "url": "http://patchwork.dpdk.org/api/series/18613/?format=api", "web_url": "http://patchwork.dpdk.org/project/dpdk/list/?series=18613", "date": "2021-09-02T05:32:48", "name": "add new API for wait until scheme", "version": 1, "mbox": "http://patchwork.dpdk.org/series/18613/mbox/" } ], "comments": "http://patchwork.dpdk.org/api/patches/97759/comments/", "check": "success", "checks": "http://patchwork.dpdk.org/api/patches/97759/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 mails.dpdk.org (mails.dpdk.org [217.70.189.124])\n\tby inbox.dpdk.org (Postfix) with ESMTP id 4D5E2A0C4D;\n\tThu, 2 Sep 2021 07:33:38 +0200 (CEST)", "from [217.70.189.124] (localhost [127.0.0.1])\n\tby mails.dpdk.org (Postfix) with ESMTP id E70C441144;\n\tThu, 2 Sep 2021 07:33:18 +0200 (CEST)", "from foss.arm.com (foss.arm.com [217.140.110.172])\n by mails.dpdk.org (Postfix) with ESMTP id 97E2A4113E\n for <dev@dpdk.org>; Thu, 2 Sep 2021 07:33:17 +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 233431FB;\n Wed, 1 Sep 2021 22:33:17 -0700 (PDT)", "from net-x86-dell-8268.shanghai.arm.com\n (net-x86-dell-8268.shanghai.arm.com [10.169.210.115])\n by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 4DAAD3F5A1;\n Wed, 1 Sep 2021 22:33:15 -0700 (PDT)" ], "From": "Feifei Wang <feifei.wang2@arm.com>", "To": "David Hunt <david.hunt@intel.com>", "Cc": "dev@dpdk.org, nd@arm.com, Feifei Wang <feifei.wang2@arm.com>,\n Ruifeng Wang <ruifeng.wang@arm.com>", "Date": "Thu, 2 Sep 2021 13:32:53 +0800", "Message-Id": "<20210902053253.3017858-6-feifei.wang2@arm.com>", "X-Mailer": "git-send-email 2.25.1", "In-Reply-To": "<20210902053253.3017858-1-feifei.wang2@arm.com>", "References": "<20210902053253.3017858-1-feifei.wang2@arm.com>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "Subject": "[dpdk-dev] [RFC PATCH v1 5/5] lib/distributor: use wait until scheme", "X-BeenThere": "dev@dpdk.org", "X-Mailman-Version": "2.1.29", "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": "Instead of polling for bufptr64 to be updated, use\nrte_wait_until_part_equal for this case.\n\nSigned-off-by: Feifei Wang <feifei.wang2@arm.com>\nReviewed-by: Ruifeng Wang <ruifeng.wang@arm.com>\n---\n lib/distributor/rte_distributor_single.c | 10 ++++------\n 1 file changed, 4 insertions(+), 6 deletions(-)", "diff": "diff --git a/lib/distributor/rte_distributor_single.c b/lib/distributor/rte_distributor_single.c\nindex f4725b1d0b..95de42f41a 100644\n--- a/lib/distributor/rte_distributor_single.c\n+++ b/lib/distributor/rte_distributor_single.c\n@@ -33,9 +33,8 @@ rte_distributor_request_pkt_single(struct rte_distributor_single *d,\n \tunion rte_distributor_buffer_single *buf = &d->bufs[worker_id];\n \tint64_t req = (((int64_t)(uintptr_t)oldpkt) << RTE_DISTRIB_FLAG_BITS)\n \t\t\t| RTE_DISTRIB_GET_BUF;\n-\twhile (unlikely(__atomic_load_n(&buf->bufptr64, __ATOMIC_RELAXED)\n-\t\t\t& RTE_DISTRIB_FLAGS_MASK))\n-\t\trte_pause();\n+\trte_wait_until_part_equal_64((volatile uint64_t *)&buf->bufptr64,\n+\t\t\tRTE_DISTRIB_FLAGS_MASK, 0, __ATOMIC_RELAXED);\n \n \t/* Sync with distributor on GET_BUF flag. */\n \t__atomic_store_n(&(buf->bufptr64), req, __ATOMIC_RELEASE);\n@@ -74,9 +73,8 @@ rte_distributor_return_pkt_single(struct rte_distributor_single *d,\n \tunion rte_distributor_buffer_single *buf = &d->bufs[worker_id];\n \tuint64_t req = (((int64_t)(uintptr_t)oldpkt) << RTE_DISTRIB_FLAG_BITS)\n \t\t\t| RTE_DISTRIB_RETURN_BUF;\n-\twhile (unlikely(__atomic_load_n(&buf->bufptr64, __ATOMIC_RELAXED)\n-\t\t\t& RTE_DISTRIB_FLAGS_MASK))\n-\t\trte_pause();\n+\trte_wait_until_part_equal_64((volatile uint64_t *)&buf->bufptr64,\n+\t\t\tRTE_DISTRIB_FLAGS_MASK, 0, __ATOMIC_RELAXED);\n \n \t/* Sync with distributor on RETURN_BUF flag. */\n \t__atomic_store_n(&(buf->bufptr64), req, __ATOMIC_RELEASE);\n", "prefixes": [ "RFC", "v1", "5/5" ] }