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=-4.6 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, 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 7EE0CC43441 for ; Wed, 21 Nov 2018 19:55:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3DC2C214E0 for ; Wed, 21 Nov 2018 19:55:45 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=fb.com header.i=@fb.com header.b="GvLtOU1Z" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3DC2C214E0 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=fb.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387801AbeKVGbZ (ORCPT ); Thu, 22 Nov 2018 01:31:25 -0500 Received: from mx0b-00082601.pphosted.com ([67.231.153.30]:60784 "EHLO mx0a-00082601.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1732576AbeKVGbY (ORCPT ); Thu, 22 Nov 2018 01:31:24 -0500 Received: from pps.filterd (m0001255.ppops.net [127.0.0.1]) by mx0b-00082601.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id wALJpRVF002473 for ; Wed, 21 Nov 2018 11:55:41 -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=RiHwm2h8NVbXXPTiYyLmwjF8A6ju8lwMsd5VnZdgrt4=; b=GvLtOU1Z2OUeN/nMcY5i3cNifmIA3xqRIGpUS3X4f+qMvv/hukrYn8AzA40X6YMv+AqN mMvxOvdNYBrkRNVAvN4m0635fCps5Rgc+EhrQ0ekc6/PHnyPtrldiurhhtZv3zRBgAOp 6DiAHUHaOOyjqC8xK7FhjDRtKzPLbsiYGH0= Received: from mail.thefacebook.com ([199.201.64.23]) by mx0b-00082601.pphosted.com with ESMTP id 2nwdmtr27f-5 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-SHA384 bits=256 verify=NOT) for ; Wed, 21 Nov 2018 11:55:40 -0800 Received: from mx-out.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 15.1.1531.3; Wed, 21 Nov 2018 11:55:38 -0800 Received: by devbig006.ftw2.facebook.com (Postfix, from userid 4523) id 1484062E19DA; Wed, 21 Nov 2018 11:55:31 -0800 (PST) Smtp-Origin-Hostprefix: devbig From: Song Liu Smtp-Origin-Hostname: devbig006.ftw2.facebook.com To: , CC: Song Liu , , , , , Smtp-Origin-Cluster: ftw2c04 Subject: [PATCH perf,bpf 0/5] reveal invisible bpf programs Date: Wed, 21 Nov 2018 11:54:57 -0800 Message-ID: <20181121195502.3259930-1-songliubraving@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:,, definitions=2018-11-21_09:,, signatures=0 X-Proofpoint-Spam-Reason: safe X-FB-Internal: Safe Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Changes RFC -> PATCH v1: 1. In perf-record, poll vip events in a separate thread; 2. Add tag to bpf prog name; 3. Small refactorings. Original cover letter (with minor revisions): This is to follow up Alexei's early effort to show bpf programs https://www.spinics.net/lists/netdev/msg524232.html In this version, PERF_RECORD_BPF_EVENT is introduced to send real time BPF load/unload events to user space. In user space, perf-record is modified to listen to these events (through a dedicated ring buffer) and generate detailed information about the program (struct bpf_prog_info_event). Then, perf-report translates these events into proper symbols. With this set, perf-report will show bpf program as: 18.49% 0.16% test [kernel.vmlinux] [k] ksys_write 18.01% 0.47% test [kernel.vmlinux] [k] vfs_write 17.02% 0.40% test bpf_prog [k] bpf_prog_07367f7ba80df72b_ 16.97% 0.10% test [kernel.vmlinux] [k] __vfs_write 16.86% 0.12% test [kernel.vmlinux] [k] comm_write 16.67% 0.39% test [kernel.vmlinux] [k] bpf_probe_read Note that, the program name is still work in progress, it will be cleaner with function types in BTF. Please share your comments on this. Thanks, Song Song Liu (5): perf, bpf: Introduce PERF_RECORD_BPF_EVENT perf: sync tools/include/uapi/linux/perf_event.h perf util: basic handling of PERF_RECORD_BPF_EVENT perf util: introduce bpf_prog_info_event perf util: generate bpf_prog_info_event for short living bpf programs include/linux/perf_event.h | 5 + include/uapi/linux/perf_event.h | 27 ++- kernel/bpf/syscall.c | 4 + kernel/events/core.c | 82 ++++++- tools/include/uapi/linux/perf_event.h | 27 ++- tools/perf/builtin-record.c | 91 +++++++- tools/perf/builtin-report.c | 2 + tools/perf/util/Build | 2 + tools/perf/util/bpf-info.c | 305 ++++++++++++++++++++++++++ tools/perf/util/bpf-info.h | 29 +++ tools/perf/util/event.c | 21 ++ tools/perf/util/event.h | 29 +++ tools/perf/util/evlist.c | 58 ++++- tools/perf/util/evlist.h | 6 + tools/perf/util/evsel.c | 9 + tools/perf/util/evsel.h | 3 + tools/perf/util/machine.c | 10 + tools/perf/util/machine.h | 2 + tools/perf/util/session.c | 8 + tools/perf/util/tool.h | 7 +- 20 files changed, 714 insertions(+), 13 deletions(-) create mode 100644 tools/perf/util/bpf-info.c create mode 100644 tools/perf/util/bpf-info.h -- 2.17.1