From patchwork Wed Dec 2 06:52:40 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrii Nakryiko X-Patchwork-Id: 336590 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=-12.0 required=3.0 tests=BAYES_00,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 35821C64E8A for ; Wed, 2 Dec 2020 06:53:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D1E1720DD4 for ; Wed, 2 Dec 2020 06:53:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728737AbgLBGxg convert rfc822-to-8bit (ORCPT ); Wed, 2 Dec 2020 01:53:36 -0500 Received: from mx0b-00082601.pphosted.com ([67.231.153.30]:39354 "EHLO mx0b-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728709AbgLBGxf (ORCPT ); Wed, 2 Dec 2020 01:53:35 -0500 Received: from pps.filterd (m0148460.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 0B26jkMM007145 for ; Tue, 1 Dec 2020 22:52:54 -0800 Received: from maileast.thefacebook.com ([163.114.130.16]) by mx0a-00082601.pphosted.com with ESMTP id 355t7y4514-3 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Tue, 01 Dec 2020 22:52:54 -0800 Received: from intmgw004.03.ash8.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; Tue, 1 Dec 2020 22:52:51 -0800 Received: by devbig012.ftw2.facebook.com (Postfix, from userid 137359) id 3CE052ECA750; Tue, 1 Dec 2020 22:52:46 -0800 (PST) From: Andrii Nakryiko To: , , , CC: , Subject: [PATCH bpf-next 0/3] bpftool: improve split BTF support Date: Tue, 1 Dec 2020 22:52:40 -0800 Message-ID: <20201202065244.530571-1-andrii@kernel.org> X-Mailer: git-send-email 2.24.1 MIME-Version: 1.0 X-FB-Internal: Safe X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.312, 18.0.737 definitions=2020-12-02_01:2020-11-30,2020-12-02 signatures=0 X-Proofpoint-Spam-Details: rule=fb_default_notspam policy=fb_default score=0 malwarescore=0 adultscore=0 priorityscore=1501 bulkscore=0 mlxlogscore=473 phishscore=0 mlxscore=0 suspectscore=8 impostorscore=0 spamscore=0 lowpriorityscore=0 clxscore=1015 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2012020040 X-FB-Internal: deliver Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Few follow up improvements to bpftool for split BTF support: - emit "name " for non-named BTFs in `bpftool btf show` command; - when dumping /sys/kernel/btf/ use /sys/kernel/btf/vmlinux as the base BTF, unless base BTF is explicitly specified with -B flag. This patch set also adds btf__base_btf() getter to access base BTF of the struct btf. Andrii Nakryiko (3): tools/bpftool: emit name for anonymous BTFs libbpf: add base BTF accessor tools/bpftool: auto-detect split BTFs in common cases tools/bpf/bpftool/btf.c | 27 +++++++++++++++++++++++---- tools/lib/bpf/btf.c | 5 +++++ tools/lib/bpf/btf.h | 1 + tools/lib/bpf/libbpf.map | 1 + 4 files changed, 30 insertions(+), 4 deletions(-)