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Date: Wed, 1 Mar 2017 17:45:09 -0300 From: Arnaldo Carvalho de Melo <acme@...nel.org> To: Peter Zijlstra <peterz@...radead.org> Cc: Hari Bathini <hbathini@...ux.vnet.ibm.com>, ast@...com, lkml <linux-kernel@...r.kernel.org>, alexander.shishkin@...ux.intel.com, mingo@...hat.com, daniel@...earbox.net, rostedt@...dmis.org, Ananth N Mavinakayanahalli <ananth@...ux.vnet.ibm.com>, ebiederm@...ssion.com, sargun@...gun.me, Aravinda Prasad <aravinda@...ux.vnet.ibm.com>, brendan.d.gregg@...il.com, jolsa@...hat.com Subject: Re: [PATCH v7 1/8] perf: add PERF_RECORD_NAMESPACES to include namespaces related info Em Fri, Feb 24, 2017 at 01:14:18PM +0100, Peter Zijlstra escreveu: > 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 <hbathini@...ux.vnet.ibm.com> > > --- > > 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) <peterz@...radead.org> Ok, looking at it now. - Arnaldo
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