From mboxrd@z Thu Jan 1 00:00:00 1970 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=-3.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=no 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 01A5BC43603 for ; Thu, 19 Dec 2019 07:07:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C23D1227BF for ; Thu, 19 Dec 2019 07:07:09 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=fb.com header.i=@fb.com header.b="WPZirxzr" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726633AbfLSHHF (ORCPT ); Thu, 19 Dec 2019 02:07:05 -0500 Received: from mx0b-00082601.pphosted.com ([67.231.153.30]:17956 "EHLO mx0b-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726617AbfLSHHF (ORCPT ); Thu, 19 Dec 2019 02:07:05 -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 xBJ70lOn028733 for ; Wed, 18 Dec 2019 23:07:03 -0800 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fb.com; h=from : to : cc : subject : date : message-id : mime-version : content-type; s=facebook; bh=7lCBGfFk/lGSZBXUQEWwWyKDzntXPRhbtu55pUSGEnM=; b=WPZirxzrDMUk2bIAk6jGe1kqjSJNcP61OLLt0baYJ04kdcgAvAL/AbpROtEsYJsdCHJD rmQq/2YpnDQd1aXv5MXyoH/8lDBKSujvg2R5f451G/rdv0eYjeSlRh+VqyeQQQiR4e9x /gnKfXYeTHN1tj/41NsAZSBwvxSseiLjn7s= Received: from mail.thefacebook.com (mailout.thefacebook.com [199.201.64.23]) by mx0a-00082601.pphosted.com with ESMTP id 2wye5f5x7k-2 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-SHA384 bits=256 verify=NOT) for ; Wed, 18 Dec 2019 23:07:03 -0800 Received: from intmgw001.08.frc2.facebook.com (2620:10d:c081:10::13) by mail.thefacebook.com (2620:10d:c081:35::130) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA) id 15.1.1713.5; Wed, 18 Dec 2019 23:07:02 -0800 Received: by devbig012.ftw2.facebook.com (Postfix, from userid 137359) id 330CA2EC16E6; Wed, 18 Dec 2019 23:07:00 -0800 (PST) Smtp-Origin-Hostprefix: devbig From: Andrii Nakryiko Smtp-Origin-Hostname: devbig012.ftw2.facebook.com To: , , , CC: , , Andrii Nakryiko Smtp-Origin-Cluster: ftw2c04 Subject: [PATCH bpf-next 0/3] Implement runqslower BCC tool with BPF CO-RE Date: Wed, 18 Dec 2019 23:06:55 -0800 Message-ID: <20191219070659.424273-1-andriin@fb.com> X-Mailer: git-send-email 2.17.1 X-FB-Internal: Safe MIME-Version: 1.0 Content-Type: text/plain X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.95,18.0.572 definitions=2019-12-18_08:2019-12-17,2019-12-18 signatures=0 X-Proofpoint-Spam-Details: rule=fb_default_notspam policy=fb_default score=0 malwarescore=0 bulkscore=0 priorityscore=1501 spamscore=0 lowpriorityscore=0 mlxlogscore=752 suspectscore=8 phishscore=0 adultscore=0 clxscore=1015 mlxscore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-1910280000 definitions=main-1912190059 X-FB-Internal: deliver Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Based on recent BPF CO-RE, tp_btf, and skeleton changes, re-implement BCC-based runqslower tool as portable pre-compiled BPF CO-RE-based tool. Make sure it's built as part of selftests to ensure it doesn't bit rot. As part of this patch set, also introduce new `format core` to `bpftool btf dump` sub-command. It generates same compilable C header file with all the types from BTF, but additionally ensures seamless use of generated header with BPF CO-RE. Currently `format core` applies preserve_access_index attribute (if supported by Clang) to all structs and unions, to improve user experience of writing TRACING programs with direct kernel memory read access. Andrii Nakryiko (3): bpftool: add extra CO-RE mode to btf dump command libbpf/tools: add runqslower tool to libbpf selftests/bpf: build runqslower from selftests .../bpf/bpftool/Documentation/bpftool-btf.rst | 7 +- tools/bpf/bpftool/bash-completion/bpftool | 2 +- tools/bpf/bpftool/btf.c | 24 ++- tools/lib/bpf/tools/runqslower/.gitignore | 2 + tools/lib/bpf/tools/runqslower/Makefile | 60 ++++++ .../lib/bpf/tools/runqslower/runqslower.bpf.c | 101 ++++++++++ tools/lib/bpf/tools/runqslower/runqslower.c | 187 ++++++++++++++++++ tools/lib/bpf/tools/runqslower/runqslower.h | 13 ++ tools/testing/selftests/bpf/Makefile | 7 +- 9 files changed, 395 insertions(+), 8 deletions(-) create mode 100644 tools/lib/bpf/tools/runqslower/.gitignore create mode 100644 tools/lib/bpf/tools/runqslower/Makefile create mode 100644 tools/lib/bpf/tools/runqslower/runqslower.bpf.c create mode 100644 tools/lib/bpf/tools/runqslower/runqslower.c create mode 100644 tools/lib/bpf/tools/runqslower/runqslower.h -- 2.17.1