From patchwork Thu Feb 4 20:50:00 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Song Liu X-Patchwork-Id: 12068763 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=-19.1 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, URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 C4810C433DB for ; Thu, 4 Feb 2021 20:50:21 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 68E6764F87 for ; Thu, 4 Feb 2021 20:50:21 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 68E6764F87 Authentication-Results: mail.kernel.org; dmarc=fail (p=reject dis=none) header.from=fb.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 47A826B0070; Thu, 4 Feb 2021 15:50:20 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 42AFE6B0071; Thu, 4 Feb 2021 15:50:20 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 2F2526B0072; Thu, 4 Feb 2021 15:50:20 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0041.hostedemail.com [216.40.44.41]) by kanga.kvack.org (Postfix) with ESMTP id 147156B0070 for ; Thu, 4 Feb 2021 15:50:20 -0500 (EST) Received: from smtpin26.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id CC8B03635 for ; Thu, 4 Feb 2021 20:50:19 +0000 (UTC) X-FDA: 77781778158.26.cow19_3400dda275df Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin26.hostedemail.com (Postfix) with ESMTP id A379D1804B669 for ; Thu, 4 Feb 2021 20:50:19 +0000 (UTC) X-HE-Tag: cow19_3400dda275df X-Filterd-Recvd-Size: 3770 Received: from mx0b-00082601.pphosted.com (mx0b-00082601.pphosted.com [67.231.153.30]) by imf45.hostedemail.com (Postfix) with ESMTP for ; Thu, 4 Feb 2021 20:50:18 +0000 (UTC) Received: from pps.filterd (m0148460.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.16.0.43/8.16.0.43) with SMTP id 114KhquF018488 for ; Thu, 4 Feb 2021 12:50:18 -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=wtfRLaxhtN/XLmbEVOfn0W2L14eyqr9QuV8fJoD1MM8=; b=KL7wr6Vpr0kaOHVC70gdGZ+1HJRGQ9uONAjW9/hsMS0pvs9k0UZTp9WSXpZZvwPonxck 1x6s9Wem4ALru6x8Rt514kxY1MOaNfb3Zro7LVaDt6xBzbfcFVhKNByhcnzGdaf21C3h oEi0qUZPGsFqkr455J2HK6JzcYtxlCOCgJ4= Received: from mail.thefacebook.com ([163.114.132.120]) by mx0a-00082601.pphosted.com with ESMTP id 36fcrbd7uq-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Thu, 04 Feb 2021 12:50:18 -0800 Received: from intmgw001.05.ash7.facebook.com (2620:10d:c085:108::4) by mail.thefacebook.com (2620:10d:c085:11d::7) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1979.3; Thu, 4 Feb 2021 12:50:16 -0800 Received: by devbig006.ftw2.facebook.com (Postfix, from userid 4523) id 2344262E1750; Thu, 4 Feb 2021 12:50:14 -0800 (PST) From: Song Liu To: , , CC: , , , , Song Liu , Yonghong Song , KP Singh Subject: [PATCH v4 bpf-next 3/4] libbpf: introduce section "iter.s/" for sleepable bpf_iter program Date: Thu, 4 Feb 2021 12:50:00 -0800 Message-ID: <20210204205002.4075937-4-songliubraving@fb.com> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20210204205002.4075937-1-songliubraving@fb.com> References: <20210204205002.4075937-1-songliubraving@fb.com> MIME-Version: 1.0 X-FB-Internal: Safe X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.369,18.0.737 definitions=2021-02-04_10:2021-02-04,2021-02-04 signatures=0 X-Proofpoint-Spam-Details: rule=fb_default_notspam policy=fb_default score=0 lowpriorityscore=0 impostorscore=0 malwarescore=0 phishscore=0 mlxlogscore=854 clxscore=1015 bulkscore=0 suspectscore=0 priorityscore=1501 spamscore=0 mlxscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2102040128 X-FB-Internal: deliver X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Sleepable iterator program have access to helper functions like bpf_d_path. Acked-by: Yonghong Song Acked-by: KP Singh 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 2abbc38005684..903ccd7e93206 100644 --- a/tools/lib/bpf/libbpf.c +++ b/tools/lib/bpf/libbpf.c @@ -8555,6 +8555,11 @@ 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,