From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751349AbdBXMPH (ORCPT ); Fri, 24 Feb 2017 07:15:07 -0500 Received: from merlin.infradead.org ([205.233.59.134]:55682 "EHLO merlin.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751192AbdBXMPA (ORCPT ); Fri, 24 Feb 2017 07:15:00 -0500 Date: Fri, 24 Feb 2017 13:14:18 +0100 From: Peter Zijlstra To: Hari Bathini Cc: ast@fb.com, lkml , acme@kernel.org, alexander.shishkin@linux.intel.com, mingo@redhat.com, daniel@iogearbox.net, rostedt@goodmis.org, Ananth N Mavinakayanahalli , ebiederm@xmission.com, sargun@sargun.me, Aravinda Prasad , brendan.d.gregg@gmail.com, jolsa@redhat.com Subject: Re: [PATCH v7 1/8] perf: add PERF_RECORD_NAMESPACES to include namespaces related info Message-ID: <20170224121418.GQ6515@twins.programming.kicks-ass.net> References: <148768564246.30285.16450228018975882950.stgit@hbathini.in.ibm.com> <148768568352.30285.11532725816180363315.stgit@hbathini.in.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <148768568352.30285.11532725816180363315.stgit@hbathini.in.ibm.com> User-Agent: Mutt/1.5.23.1 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Feb 21, 2017 at 07:31:23PM +0530, Hari Bathini wrote: > With the advert of container technologies like docker, that depend > on namespaces for isolation, there is a need for tracing support for > namespaces. This patch introduces new PERF_RECORD_NAMESPACES event > for recording namespaces related info. By recording info for every > namespace, it is left to userspace to take a call on the definition > of a container and trace containers by updating perf tool accordingly. > > Each namespace has a combination of device and inode numbers. Though > every namespace has the same device number currently, that may change > in future to avoid the need for a namespace of namespaces. Considering > such possibility, record both device and inode numbers separately for > each namespace. > > Signed-off-by: Hari Bathini > --- > include/linux/perf_event.h | 2 + > include/uapi/linux/perf_event.h | 32 +++++++++ > kernel/events/core.c | 139 +++++++++++++++++++++++++++++++++++++++ > kernel/fork.c | 2 + > kernel/nsproxy.c | 3 + > 5 files changed, 177 insertions(+), 1 deletion(-) Arnaldo, seeing that most of this patch set is tool stuff, could you take the lot through the tool tree? This patch: Acked-by: Peter Zijlstra (Intel)