From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756393AbcHDOsv (ORCPT ); Thu, 4 Aug 2016 10:48:51 -0400 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:8030 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1750852AbcHDOsu (ORCPT ); Thu, 4 Aug 2016 10:48:50 -0400 X-IBM-Helo: d03dlp03.boulder.ibm.com X-IBM-MailFrom: aravinda@linux.vnet.ibm.com Subject: Re: [RFC PATCH v2 0/3] perf/tracefs: Container-aware tracing support To: "Eric W. Biederman" , Hari Bathini References: <146965470618.23765.7329786743211962695.stgit@hbathini.in.ibm.com> <87twf1ck95.fsf@x220.int.ebiederm.org> Cc: daniel@iogearbox.net, peterz@infradead.org, linux-kernel@vger.kernel.org, acme@kernel.org, alexander.shishkin@linux.intel.com, mingo@redhat.com, paulus@samba.org, kernel@kyup.com, rostedt@goodmis.org, viro@zeniv.linux.org.uk, ananth@in.ibm.com, Linux Containers From: Aravinda Prasad Date: Thu, 4 Aug 2016 20:18:33 +0530 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.8.0 MIME-Version: 1.0 In-Reply-To: <87twf1ck95.fsf@x220.int.ebiederm.org> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit X-TM-AS-GCONF: 00 X-Content-Scanned: Fidelis XPS MAILER x-cbid: 16080414-0024-0000-0000-000014420FE3 X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00005548; HX=3.00000240; KW=3.00000007; PH=3.00000004; SC=3.00000178; SDB=6.00739919; UDB=6.00347943; IPR=6.00512517; BA=6.00004644; NDR=6.00000001; ZLA=6.00000005; ZF=6.00000009; ZB=6.00000000; ZP=6.00000000; ZH=6.00000000; ZU=6.00000002; MB=3.00012156; XFM=3.00000011; UTC=2016-08-04 14:48:45 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 16080414-0025-0000-0000-000043473B2A Message-Id: <57A355C1.4090004@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2016-08-04_09:,, 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=8.0.1-1604210000 definitions=main-1608040162 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thursday 04 August 2016 08:29 AM, Eric W. Biederman wrote: > Hari Bathini writes: > >> This RFC patch set supports filtering container specific events >> when perf tool is executed inside a container. The patches apply >> cleanly on v4.7.0-rc7 >> >> Changes from v1: >> 1/3. Revived earlier approach[1] with cgroup namespace instead >> of pid namespace >> 2/3. New patch that adds instance support for uprobe events in >> tracefs filesystem >> 3/3. New patch that adds "newinstance" mount option for tracefs >> filesystem > "newinstace" ick no. > > I see no justification anywhere why the perf cgroup is not enough for > this. perf cgroup is not enough for uprobes, because even with perf cgroups a user within a container can still list/delete uprobes registered in other containers. Regards, Aravinda > > Eric > -- Regards, Aravinda