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GET /api/patches/125026/?format=api
{ "id": 125026, "url": "http://patches.dpdk.org/api/patches/125026/?format=api", "web_url": "http://patches.dpdk.org/project/dpdk/patch/1678486530-20688-6-git-send-email-roretzla@linux.microsoft.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": "<1678486530-20688-6-git-send-email-roretzla@linux.microsoft.com>", "list_archive_url": "https://inbox.dpdk.org/dev/1678486530-20688-6-git-send-email-roretzla@linux.microsoft.com", "date": "2023-03-10T22:15:19", "name": "[05/16] net/af_xdp: use previous value atomic fetch operations", "commit_ref": null, "pull_url": null, "state": "superseded", "archived": true, "hash": "566ab11c715f9347d8775c03308ca2b1bce8c315", "submitter": { "id": 2077, "url": "http://patches.dpdk.org/api/people/2077/?format=api", "name": "Tyler Retzlaff", "email": "roretzla@linux.microsoft.com" }, "delegate": { "id": 1, "url": "http://patches.dpdk.org/api/users/1/?format=api", "username": "tmonjalo", "first_name": "Thomas", "last_name": "Monjalon", "email": "thomas@monjalon.net" }, "mbox": "http://patches.dpdk.org/project/dpdk/patch/1678486530-20688-6-git-send-email-roretzla@linux.microsoft.com/mbox/", "series": [ { "id": 27337, "url": "http://patches.dpdk.org/api/series/27337/?format=api", "web_url": "http://patches.dpdk.org/project/dpdk/list/?series=27337", "date": "2023-03-10T22:15:16", "name": "use __atomic operations returning new value", "version": 1, "mbox": "http://patches.dpdk.org/series/27337/mbox/" } ], "comments": "http://patches.dpdk.org/api/patches/125026/comments/", "check": "success", "checks": "http://patches.dpdk.org/api/patches/125026/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 B604041E6D;\n\tFri, 10 Mar 2023 23:16:44 +0100 (CET)", "from mails.dpdk.org (localhost [127.0.0.1])\n\tby mails.dpdk.org (Postfix) with ESMTP id 4166942D3A;\n\tFri, 10 Mar 2023 23:15:49 +0100 (CET)", "from linux.microsoft.com (linux.microsoft.com [13.77.154.182])\n by mails.dpdk.org (Postfix) with ESMTP id 2FC3C40FAE\n for <dev@dpdk.org>; Fri, 10 Mar 2023 23:15:37 +0100 (CET)", "by linux.microsoft.com (Postfix, from userid 1086)\n id B9F28204472C; Fri, 10 Mar 2023 14:15:35 -0800 (PST)" ], "DKIM-Filter": "OpenDKIM Filter v2.11.0 linux.microsoft.com B9F28204472C", "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com;\n s=default; t=1678486535;\n bh=7cgDgrLgK/5Yqsswjcs4EDe6KihylHqpm+0X5wjp9x4=;\n h=From:To:Cc:Subject:Date:In-Reply-To:References:From;\n b=YiyXgNtjYZx+B2mw+HXJNnvKProMlsZkXtFv1KIEtzyf1edNWgKc7aTfGwWuJZsRP\n c1FDqjYVOCjITMfu8SjbHlwzymWzwBzJuX1/UINXYALRIzw1jq5JbrWy0e1JrR4k6M\n gGxEGOAw/qTYxg9ImFcRccuWwIx1bFQLrdlQKpaw=", "From": "Tyler Retzlaff <roretzla@linux.microsoft.com>", "To": "dev@dpdk.org", "Cc": "Honnappa.Nagarahalli@arm.com, Ruifeng.Wang@arm.com, thomas@monjalon.net,\n Tyler Retzlaff <roretzla@linux.microsoft.com>", "Subject": "[PATCH 05/16] net/af_xdp: use previous value atomic fetch operations", "Date": "Fri, 10 Mar 2023 14:15:19 -0800", "Message-Id": "<1678486530-20688-6-git-send-email-roretzla@linux.microsoft.com>", "X-Mailer": "git-send-email 1.8.3.1", "In-Reply-To": "<1678486530-20688-1-git-send-email-roretzla@linux.microsoft.com>", "References": "<1678486530-20688-1-git-send-email-roretzla@linux.microsoft.com>", "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" }, "content": "Use __atomic_fetch_{add,and,or,sub,xor} instead of\n__atomic_{add,and,or,sub,xor}_fetch adding the necessary code to\nallow consumption of the resulting value.\n\nSigned-off-by: Tyler Retzlaff <roretzla@linux.microsoft.com>\n---\n drivers/net/af_xdp/rte_eth_af_xdp.c | 4 ++--\n 1 file changed, 2 insertions(+), 2 deletions(-)", "diff": "diff --git a/drivers/net/af_xdp/rte_eth_af_xdp.c b/drivers/net/af_xdp/rte_eth_af_xdp.c\nindex 2a20a69..c7786cc 100644\n--- a/drivers/net/af_xdp/rte_eth_af_xdp.c\n+++ b/drivers/net/af_xdp/rte_eth_af_xdp.c\n@@ -979,7 +979,7 @@ static int link_xdp_prog_with_dev(int ifindex, int fd, __u32 flags)\n \t\t\tbreak;\n \t\txsk_socket__delete(rxq->xsk);\n \n-\t\tif (__atomic_sub_fetch(&rxq->umem->refcnt, 1, __ATOMIC_ACQUIRE)\n+\t\tif (__atomic_fetch_sub(&rxq->umem->refcnt, 1, __ATOMIC_ACQUIRE) - 1\n \t\t\t\t== 0) {\n \t\t\t(void)xsk_umem__delete(rxq->umem->umem);\n \t\t\txdp_umem_destroy(rxq->umem);\n@@ -1710,7 +1710,7 @@ struct msg_internal {\n out_xsk:\n \txsk_socket__delete(rxq->xsk);\n out_umem:\n-\tif (__atomic_sub_fetch(&rxq->umem->refcnt, 1, __ATOMIC_ACQUIRE) == 0)\n+\tif (__atomic_fetch_sub(&rxq->umem->refcnt, 1, __ATOMIC_ACQUIRE) - 1 == 0)\n \t\txdp_umem_destroy(rxq->umem);\n \n \treturn ret;\n", "prefixes": [ "05/16" ] }