linux-kernel - Re: [RFC PATCH v2 0/3] perf/tracefs: Container-aware tracing support

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Message-ID: <87twf1ck95.fsf@x220.int.ebiederm.org>
Date:	Wed, 03 Aug 2016 21:59:02 -0500
From:	ebiederm@...ssion.com (Eric W. Biederman)
To:	Hari Bathini <hbathini@...ux.vnet.ibm.com>
Cc:	daniel@...earbox.net, peterz@...radead.org,
	linux-kernel@...r.kernel.org, acme@...nel.org,
	alexander.shishkin@...ux.intel.com, mingo@...hat.com,
	paulus@...ba.org, kernel@...p.com, rostedt@...dmis.org,
	viro@...iv.linux.org.uk, aravinda@...ux.vnet.ibm.com,
	ananth@...ibm.com,
	Linux Containers <containers@...ts.linux-foundation.org>
Subject: Re: [RFC PATCH v2 0/3] perf/tracefs: Container-aware tracing support

Hari Bathini <hbathini@...ux.vnet.ibm.com> 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.

Eric