From patchwork Sat Dec 12 02:48:09 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Song Liu X-Patchwork-Id: 343213 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-18.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 11E70C1B0D8 for ; Sat, 12 Dec 2020 02:51:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CA31222DFB for ; Sat, 12 Dec 2020 02:51:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2437713AbgLLCue (ORCPT ); Fri, 11 Dec 2020 21:50:34 -0500 Received: from mx0b-00082601.pphosted.com ([67.231.153.30]:49068 "EHLO mx0b-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2437678AbgLLCtY (ORCPT ); Fri, 11 Dec 2020 21:49:24 -0500 Received: from pps.filterd (m0109331.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.16.0.43/8.16.0.43) with SMTP id 0BC2jGqo005066 for ; Fri, 11 Dec 2020 18:48:43 -0800 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fb.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding : content-type; s=facebook; bh=fHK02DMY3e9CuY9vd0yEYe9+aiFFQzzSEnF0c5NhuB8=; b=kMmPW3arSVgtPBcM85ee0LICp/ZW0dIoLTHuXREfrajYChu2Q+Ib2Bc7/AYKLupeG3kH elbUuRI+45P9DmcUe9OBJ1zLNigwXiSOlGUfCeVkGlJbcsI0yeWzJSWWezSiCvCLcjle AjFje6RuIdG7OTpgbEY8aWQP9RGJOt05fHY= Received: from maileast.thefacebook.com ([163.114.130.16]) by mx0a-00082601.pphosted.com with ESMTP id 35c9rekxxn-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Fri, 11 Dec 2020 18:48:42 -0800 Received: from intmgw004.08.frc2.facebook.com (2620:10d:c0a8:1b::d) by mail.thefacebook.com (2620:10d:c0a8:82::c) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1979.3; Fri, 11 Dec 2020 18:48:42 -0800 Received: by devbig006.ftw2.facebook.com (Postfix, from userid 4523) id 5133B62E50ED; Fri, 11 Dec 2020 18:48:37 -0800 (PST) From: Song Liu To: , CC: , , , , , , Song Liu Subject: [PATCH bpf-next 3/4] libbpf: introduce section "iter.s/" for sleepable bpf_iter program Date: Fri, 11 Dec 2020 18:48:09 -0800 Message-ID: <20201212024810.807616-4-songliubraving@fb.com> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20201212024810.807616-1-songliubraving@fb.com> References: <20201212024810.807616-1-songliubraving@fb.com> MIME-Version: 1.0 X-FB-Internal: Safe X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.343, 18.0.737 definitions=2020-12-11_10:2020-12-11,2020-12-11 signatures=0 X-Proofpoint-Spam-Details: rule=fb_default_notspam policy=fb_default score=0 suspectscore=0 priorityscore=1501 impostorscore=0 lowpriorityscore=0 spamscore=0 clxscore=1015 adultscore=0 bulkscore=0 malwarescore=0 phishscore=0 mlxscore=0 mlxlogscore=802 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2012120020 X-FB-Internal: deliver Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Sleepable iterator program have access to helper functions like bpf_d_path. Signed-off-by: Song Liu --- tools/lib/bpf/libbpf.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c index 9be88a90a4aad..9204d12d04bf8 100644 --- a/tools/lib/bpf/libbpf.c +++ b/tools/lib/bpf/libbpf.c @@ -8535,6 +8535,11 @@ static const struct bpf_sec_def section_defs[] = { .expected_attach_type = BPF_TRACE_ITER, .is_attach_btf = true, .attach_fn = attach_iter), + SEC_DEF("iter.s/", TRACING, + .expected_attach_type = BPF_TRACE_ITER, + .is_attach_btf = true, + .is_sleepable = true, + .attach_fn = attach_iter), BPF_EAPROG_SEC("xdp_devmap/", BPF_PROG_TYPE_XDP, BPF_XDP_DEVMAP), BPF_EAPROG_SEC("xdp_cpumap/", BPF_PROG_TYPE_XDP,