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

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Date:	Thu, 4 Aug 2016 01:46:04 +0530
From:	Aravinda Prasad <aravinda@...ux.vnet.ibm.com>
To:	Steven Rostedt <rostedt@...dmis.org>
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 Thursday 04 August 2016 01:40 AM, Steven Rostedt wrote:
> 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?

Yes. The host needs to take care of separating everything. There is no
"second kernel".

> 
> -- Steve
> 

-- 
Regards,
Aravinda