From patchwork Tue Dec 4 19:53:52 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Song Liu X-Patchwork-Id: 1007829 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="f8c0h3rr"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 438Xd42x2Zz9s3Z for ; Wed, 5 Dec 2018 06:54:32 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726428AbeLDTy0 (ORCPT ); Tue, 4 Dec 2018 14:54:26 -0500 Received: from mx0b-00082601.pphosted.com ([67.231.153.30]:54172 "EHLO mx0a-00082601.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1725875AbeLDTyY (ORCPT ); Tue, 4 Dec 2018 14:54:24 -0500 Received: from pps.filterd (m0001303.ppops.net [127.0.0.1]) by m0001303.ppops.net (8.16.0.27/8.16.0.27) with SMTP id wB4Jk80S032470 for ; Tue, 4 Dec 2018 11:54:23 -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=k3vhgKNIOUqfF+ezFVZGVZ19C29Fw21QnzWMIpL4hIA=; b=f8c0h3rrU+8u4JFg4DL2kEkAmqRSYAo2f01wfEp3d7IABPmxDSJwraUXSCAoA2P0GojO zOGL3vUpFPG/QeloPYns2f3368LbWIZowInbe3ActzTVF2F0ZmDf8Ct50T4bv52glNcg 4zk8kuPMMspmlU/5GyrvMCzw6B2TrYW7uK8= Received: from mail.thefacebook.com ([199.201.64.23]) by m0001303.ppops.net with ESMTP id 2p5xqu89s8-8 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-SHA384 bits=256 verify=NOT) for ; Tue, 04 Dec 2018 11:54:22 -0800 Received: from mx-out.facebook.com (2620:10d:c081:10::13) by mail.thefacebook.com (2620:10d:c081:35::129) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA) id 15.1.1531.3; Tue, 4 Dec 2018 11:54:09 -0800 Received: by devbig006.ftw2.facebook.com (Postfix, from userid 4523) id 74B1262E1546; Tue, 4 Dec 2018 11:54:02 -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 v2 perf,bpf 0/3] reveal invisible bpf programs Date: Tue, 4 Dec 2018 11:53:52 -0800 Message-ID: <20181204195355.4079788-1-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=2018-12-04_08:, , 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 Changes v2 -> PATCH v1: 1. Only 3 of the 5 patches in v1, to focus on ABI first; 2. Generate PERF_RECORD_BPF_EVENT per bpf sub program instead of per prog; 3. Modify PERF_RECORD_BPF_EVENT with more details (addr, len, name), so that it can be used for basic profiling without calling sys_bpf. 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. 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. Thanks, Song Song Liu (3): 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 include/linux/filter.h | 1 + include/linux/perf_event.h | 10 +++ include/uapi/linux/perf_event.h | 35 +++++++- kernel/bpf/core.c | 2 +- kernel/bpf/syscall.c | 3 + kernel/events/core.c | 123 +++++++++++++++++++++++++- tools/include/uapi/linux/perf_event.h | 35 +++++++- tools/perf/util/event.c | 22 +++++ tools/perf/util/event.h | 26 ++++++ tools/perf/util/evsel.c | 1 + tools/perf/util/machine.c | 10 +++ tools/perf/util/machine.h | 2 + tools/perf/util/session.c | 4 + tools/perf/util/tool.h | 4 +- 14 files changed, 273 insertions(+), 5 deletions(-) --- 2.17.1