From patchwork Sat Feb 9 01:16:56 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Song Liu X-Patchwork-Id: 1039087 Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=fb.com Authentication-Results: ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=fb.com header.i=@fb.com header.b="bkF5SlVw"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 43xDgG6Z8sz9sMr for ; Sat, 9 Feb 2019 12:17:30 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727035AbfBIBRV (ORCPT ); Fri, 8 Feb 2019 20:17:21 -0500 Received: from mx0a-00082601.pphosted.com ([67.231.145.42]:57206 "EHLO mx0a-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727012AbfBIBRU (ORCPT ); Fri, 8 Feb 2019 20:17:20 -0500 Received: from pps.filterd (m0044010.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x191AcHw007146 for ; Fri, 8 Feb 2019 17:17:19 -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=EyrvzrkmgTkO1e11pxZuQMcKXRcacnfqTLOCN8vM4BM=; b=bkF5SlVwHtMpiUmLVWHBfHoA2w94lC5Hxzp/qgbldOUge04QpwH+gWWjJJ6cH1QQjDMg bLVP0pdx7DG0sMtvNuwEogQKaYxOQlaYxyK8lB4r5+IPjFJlbe/rVJDiP7Du2Sr8I0Ut KgZa1VdIn5nyutyVMmz6giJEney6HJV4VNI= Received: from maileast.thefacebook.com ([199.201.65.23]) by mx0a-00082601.pphosted.com with ESMTP id 2qhk218b9r-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-SHA384 bits=256 verify=NOT) for ; Fri, 08 Feb 2019 17:17:19 -0800 Received: from mx-out.facebook.com (2620:10d:c0a1:3::13) by mail.thefacebook.com (2620:10d:c021:18::175) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA) id 15.1.1531.3; Fri, 8 Feb 2019 17:17:09 -0800 Received: by devbig006.ftw2.facebook.com (Postfix, from userid 4523) id 9E68D62E2A06; Fri, 8 Feb 2019 17:17:08 -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 0/9] perf annotation of BPF programs Date: Fri, 8 Feb 2019 17:16:56 -0800 Message-ID: <20190209011705.2160185-1-songliubraving@fb.com> X-Mailer: git-send-email 2.17.1 X-FB-Internal: Safe MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:, , definitions=2019-02-09_01:, , signatures=0 X-Proofpoint-Spam-Reason: safe X-FB-Internal: Safe Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org This series enables annotation of BPF programs in perf. perf tool gathers information via sys_bpf and (optionally) stores them in perf.data as headers. Patch 1/9 fixes a minor issue in kernel; Patch 2/9 to 4/9 introduce new helper functions and use them in perf and bpftool; Patch 5/9 and 6/9 saves information of bpf program in perf_env; Patch 7/9 adds --bpf-event options to perf-top; Patch 8/9 enables annotation of bpf programs based on information gathered in 5/9 and 6/9; Patch 9/9 handles information of short living BPF program that are loaded during perf-record or perf-top. Commands tested during developments are perf-top, perf-record, perf-report, and perf-annotate. ===================== Note on patch dependency ======================== This set has dependency in both bpf-next tree and tip/perf/core. Current version is developed on bpf-next tree with the following commits cherry-picked from tip/perf/core: (from 1/10 to 10/10) commit 76193a94522f ("perf, bpf: Introduce PERF_RECORD_KSYMBOL") commit d764ac646491 ("tools headers uapi: Sync tools/include/uapi/linux/perf_event.h") commit 6ee52e2a3fe4 ("perf, bpf: Introduce PERF_RECORD_BPF_EVENT") commit df063c83aa2c ("tools headers uapi: Sync tools/include/uapi/linux/perf_event.h") commit 9aa0bfa370b2 ("perf tools: Handle PERF_RECORD_KSYMBOL") commit 45178a928a4b ("perf tools: Handle PERF_RECORD_BPF_EVENT") commit 7b612e291a5a ("perf tools: Synthesize PERF_RECORD_* for loaded BPF programs") commit a40b95bcd30c ("perf top: Synthesize BPF events for pre-existing loaded BPF programs") commit 6934058d9fb6 ("bpf: Add module name [bpf] to ksymbols for bpf programs") commit 811184fb6977 ("perf bpf: Fix synthesized PERF_RECORD_KSYMBOL/BPF_EVENT") ======================================================================== Song Liu (9): perf, bpf: consider events with attr.bpf_event as side-band events bpf: libbpf: introduce bpf_program__get_prog_info_linear() bpf: bpftool: use bpf_program__get_prog_info_linear() in prog.c:do_dump() perf, bpf: synthesize bpf events with bpf_program__get_prog_info_linear() perf, bpf: save bpf_prog_info in a rbtree in perf_env perf, bpf: save btf in a rbtree in perf_env perf-top: add option --bpf-event perf, bpf: enable annotation of bpf program perf, bpf: save information about short living bpf programs kernel/events/core.c | 3 +- tools/bpf/bpftool/prog.c | 266 ++++++--------------------- tools/lib/bpf/libbpf.c | 251 ++++++++++++++++++++++++++ tools/lib/bpf/libbpf.h | 63 +++++++ tools/lib/bpf/libbpf.map | 3 + tools/perf/Makefile.config | 2 +- tools/perf/builtin-record.c | 15 +- tools/perf/builtin-top.c | 15 +- tools/perf/util/annotate.c | 149 ++++++++++++++- tools/perf/util/bpf-event.c | 351 +++++++++++++++++++++++++++--------- tools/perf/util/bpf-event.h | 48 ++++- tools/perf/util/dso.c | 1 + tools/perf/util/dso.h | 33 ++-- tools/perf/util/env.c | 148 +++++++++++++++ tools/perf/util/env.h | 12 ++ tools/perf/util/evlist.c | 20 ++ tools/perf/util/evlist.h | 2 + tools/perf/util/header.c | 231 +++++++++++++++++++++++- tools/perf/util/header.h | 2 + tools/perf/util/symbol.c | 1 + 20 files changed, 1304 insertions(+), 312 deletions(-) --- 2.17.1