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GET /api/patches/103291/?format=api
http://patches.dpdk.org/api/patches/103291/?format=api", "web_url": "http://patches.dpdk.org/project/dpdk/patch/20211101060007.2632418-5-feifei.wang2@arm.com/", "project": { "id": 1, "url": "http://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": "<20211101060007.2632418-5-feifei.wang2@arm.com>", "list_archive_url": "https://inbox.dpdk.org/dev/20211101060007.2632418-5-feifei.wang2@arm.com", "date": "2021-11-01T06:00:06", "name": "[v9,4/5] bpf: use wait until scheme for Rx/Tx iteration", "commit_ref": null, "pull_url": null, "state": "accepted", "archived": true, "hash": "6314bfe13669ecea17a2ab8faed7ee3010cb1123", "submitter": { "id": 1771, "url": "http://patches.dpdk.org/api/people/1771/?format=api", "name": "Feifei Wang", "email": "feifei.wang2@arm.com" }, "delegate": { "id": 24651, "url": "http://patches.dpdk.org/api/users/24651/?format=api", "username": "dmarchand", "first_name": "David", "last_name": "Marchand", "email": "david.marchand@redhat.com" }, "mbox": "http://patches.dpdk.org/project/dpdk/patch/20211101060007.2632418-5-feifei.wang2@arm.com/mbox/", "series": [ { "id": 20158, "url": "http://patches.dpdk.org/api/series/20158/?format=api", "web_url": "http://patches.dpdk.org/project/dpdk/list/?series=20158", "date": "2021-11-01T06:00:02", "name": "add new helper for wait scheme", "version": 9, "mbox": "http://patches.dpdk.org/series/20158/mbox/" } ], "comments": "http://patches.dpdk.org/api/patches/103291/comments/", "check": "success", "checks": "http://patches.dpdk.org/api/patches/103291/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 9FAB6A0C52;\n\tMon, 1 Nov 2021 07:00:47 +0100 (CET)", "from [217.70.189.124] (localhost [127.0.0.1])\n\tby mails.dpdk.org (Postfix) with ESMTP id 9CB45410FD;\n\tMon, 1 Nov 2021 07:00:32 +0100 (CET)", "from foss.arm.com (foss.arm.com [217.140.110.172])\n by mails.dpdk.org (Postfix) with ESMTP id BEB7540DF6\n for <dev@dpdk.org>; Mon, 1 Nov 2021 07:00:30 +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 5511DD6E;\n Sun, 31 Oct 2021 23:00:30 -0700 (PDT)", "from net-x86-dell-8268.shanghai.arm.com\n (net-x86-dell-8268.shanghai.arm.com [10.169.210.102])\n by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 6E1263F70D;\n Sun, 31 Oct 2021 23:00:27 -0700 (PDT)" ], "From": "Feifei Wang <feifei.wang2@arm.com>", "To": "Konstantin Ananyev <konstantin.ananyev@intel.com>", "Cc": "dev@dpdk.org, nd@arm.com, jerinjacobk@gmail.com,\n stephen@networkplumber.org, thomas@monjalon.net, david.marchand@redhat.com,\n Feifei Wang <feifei.wang2@arm.com>, Ruifeng Wang <ruifeng.wang@arm.com>", "Date": "Mon, 1 Nov 2021 14:00:06 +0800", "Message-Id": "<20211101060007.2632418-5-feifei.wang2@arm.com>", "X-Mailer": "git-send-email 2.25.1", "In-Reply-To": "<20211101060007.2632418-1-feifei.wang2@arm.com>", "References": "<20210902053253.3017858-1-feifei.wang2@arm.com>\n <20211101060007.2632418-1-feifei.wang2@arm.com>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "Subject": "[dpdk-dev] [PATCH v9 4/5] bpf: use wait until scheme for Rx/Tx\n iteration", "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 cbi->use to be updated, use wait until scheme.\n\nSigned-off-by: Feifei Wang <feifei.wang2@arm.com>\nReviewed-by: Ruifeng Wang <ruifeng.wang@arm.com>\nAcked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>\n---\n lib/bpf/bpf_pkt.c | 9 +++------\n 1 file changed, 3 insertions(+), 6 deletions(-)", "diff": "diff --git a/lib/bpf/bpf_pkt.c b/lib/bpf/bpf_pkt.c\nindex 6e8248f0d6..000b82d935 100644\n--- a/lib/bpf/bpf_pkt.c\n+++ b/lib/bpf/bpf_pkt.c\n@@ -113,7 +113,7 @@ bpf_eth_cbi_unuse(struct bpf_eth_cbi *cbi)\n static void\n bpf_eth_cbi_wait(const struct bpf_eth_cbi *cbi)\n {\n-\tuint32_t nuse, puse;\n+\tuint32_t puse;\n \n \t/* make sure all previous loads and stores are completed */\n \trte_smp_mb();\n@@ -122,11 +122,8 @@ bpf_eth_cbi_wait(const struct bpf_eth_cbi *cbi)\n \n \t/* in use, busy wait till current RX/TX iteration is finished */\n \tif ((puse & BPF_ETH_CBI_INUSE) != 0) {\n-\t\tdo {\n-\t\t\trte_pause();\n-\t\t\trte_compiler_barrier();\n-\t\t\tnuse = cbi->use;\n-\t\t} while (nuse == puse);\n+\t\tRTE_WAIT_UNTIL_MASKED((uint32_t *)(uintptr_t)&cbi->use, UINT32_MAX,\n+\t\t\t!=, puse, __ATOMIC_RELAXED);\n \t}\n }\n \n", "prefixes": [ "v9", "4/5" ] }{ "id": 103291, "url": "