linux-kernel - Re: [RFC PATCH v2 2/3] tracefs: add instances support for uprobe events

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Message-ID: <20160803161039.3180f0fd@gandalf.local.home>
Date:	Wed, 3 Aug 2016 16:10:39 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Aravinda Prasad <aravinda@...ux.vnet.ibm.com>
Cc:	Hari Bathini <hbathini@...ux.vnet.ibm.com>, 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, ebiederm@...ssion.com,
	kernel@...p.com, viro@...iv.linux.org.uk, ananth@...ibm.com
Subject: Re: [RFC PATCH v2 2/3] tracefs: add instances support for uprobe
 events

On Thu, 4 Aug 2016 01:00:51 +0530
Aravinda Prasad <aravinda@...ux.vnet.ibm.com> wrote:

> 
> > Can a container have its own function tracing?  
> 
> Sorry, I didn't understand that. Do you mean to have a separate
> per-container trace files?

Actually, it's more my ignorance of containers, as I haven't had the
need to play with them. Although, I think it may be time to do so.

When a container enters kernel mode, I'm assuming that it's part of the
host at that moment, and the host needs to take care of separating
everything? That is, there's not a "second kernel" like VMs have, right?

-- Steve