Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755484AbcKJLie (ORCPT ); Thu, 10 Nov 2016 06:38:34 -0500 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:34393 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1755200AbcKJLib (ORCPT ); Thu, 10 Nov 2016 06:38:31 -0500 Subject: [PATCH 0/3] perf: add support for analyzing events for containers From: Hari Bathini To: ast@fb.com, peterz@infradead.org, lkml , acme@kernel.org, alexander.shishkin@linux.intel.com, mingo@redhat.com Cc: daniel@iogearbox.net, rostedt@goodmis.org, Ananth N Mavinakayanahalli , ebiederm@xmission.com, sargun@sargun.me, Aravinda Prasad , brendan.d.gregg@gmail.com Date: Thu, 10 Nov 2016 17:07:54 +0530 User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 16111011-0016-0000-0000-000001EF0C82 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 16111011-0017-0000-0000-000005D3D32B Message-Id: <147877784354.29988.8570048236764105701.stgit@hbathini.in.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2016-11-10_03:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=0 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1609300000 definitions=main-1611100218 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3671 Lines: 68 Currently, there is no trivial mechanism to analyze events based on containers. perf -G can be used, but it will not filter events for the containers created after perf is invoked, making it difficult to assess/ analyze performance issues of multiple containers at once. This patch-set overcomes this limitation by using cgroup identifier as container unique identifier. A new PERF_RECORD_NAMESPACES event that records namespaces related info is introduced, from which the cgroup namespace's inode number is used as cgroup identifier. This is based on the assumption that each container is created with it's own cgroup namespace allowing assessment/analysis of multiple containers using cgroup identifier. The first patch introduces PERF_RECORD_NAMESPACES in kernel while the second patch makes the corresponding changes in perf tool to read this PERF_RECORD_NAMESPACES events. The third patch adds a cgroup identifier column in perf report, which is nothing but the cgroup namespace's inode number. This approach is based on the suggestion from Peter Zijlstra here: https://patchwork.kernel.org/patch/9305655/ --- Hari Bathini (3): perf: add PERF_RECORD_NAMESPACES to include namespaces related info perf tool: add PERF_RECORD_NAMESPACES to include namespaces related info perf tool: add cgroup identifier entry in perf report fs/mount.h | 17 ---- include/linux/mnt_namespace.h | 18 ++++ include/linux/perf_event.h | 1 include/uapi/linux/perf_event.h | 21 +++++ kernel/events/core.c | 136 +++++++++++++++++++++++++++++++++ kernel/fork.c | 4 + kernel/nsproxy.c | 5 + tools/include/uapi/linux/perf_event.h | 21 +++++ tools/perf/builtin-annotate.c | 1 tools/perf/builtin-diff.c | 1 tools/perf/builtin-inject.c | 14 +++ tools/perf/builtin-kmem.c | 1 tools/perf/builtin-kvm.c | 2 tools/perf/builtin-lock.c | 1 tools/perf/builtin-mem.c | 1 tools/perf/builtin-record.c | 28 ++++++- tools/perf/builtin-report.c | 1 tools/perf/builtin-sched.c | 1 tools/perf/builtin-script.c | 41 ++++++++++ tools/perf/builtin-trace.c | 3 - tools/perf/util/Build | 1 tools/perf/util/data-convert-bt.c | 2 tools/perf/util/event.c | 123 ++++++++++++++++++++++++++++-- tools/perf/util/event.h | 25 ++++++ tools/perf/util/evsel.c | 1 tools/perf/util/hist.c | 4 + tools/perf/util/hist.h | 1 tools/perf/util/machine.c | 24 ++++++ tools/perf/util/machine.h | 3 + tools/perf/util/namespaces.c | 33 ++++++++ tools/perf/util/namespaces.h | 24 ++++++ tools/perf/util/session.c | 7 ++ tools/perf/util/sort.c | 22 +++++ tools/perf/util/sort.h | 2 tools/perf/util/thread.c | 44 ++++++++++- tools/perf/util/thread.h | 7 ++ tools/perf/util/tool.h | 1 37 files changed, 610 insertions(+), 32 deletions(-) create mode 100644 tools/perf/util/namespaces.c create mode 100644 tools/perf/util/namespaces.h