linux-kernel - Re: [ckrm-tech] RFC: Memory Controller

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Message-ID: <45475B64.2090301@openvz.org>
Date:	Tue, 31 Oct 2006 17:19:16 +0300
From:	Pavel Emelianov <xemul@...nvz.org>
To:	balbir@...ibm.com, menage@...gle.com
CC:	Pavel Emelianov <xemul@...nvz.org>, vatsa@...ibm.com,
	dev@...nvz.org, sekharan@...ibm.com,
	ckrm-tech@...ts.sourceforge.net, haveblue@...ibm.com,
	linux-kernel@...r.kernel.org, pj@....com, matthltc@...ibm.com,
	dipankar@...ibm.com, rohitseth@...gle.com, linux-mm@...ck.org
Subject: Re: [ckrm-tech] RFC: Memory Controller

[snip]

> A quick code review showed that most of the accounting is the
> same.
> 
> I see that most of the mmap accounting code, it seems to do
> the equivalent of security_vm_enough_memory() when VM_ACCOUNT
> is set. May be we could merge the accounting code to handle
> even containers.
> 
> I looked at
> 
> do_mmap_pgoff
> acct_stack_growth
> __do_brk (
> do_mremap

I'm sure this is possible. I'll take this into account
in the next patch series. Thank you.

>> [snip]
>>
>>> Please see the patching of Rohit's memory controller for user
>>> level patching. It seems much simpler.
>> Could you send me an URL where to get the patch from, please.
>> Or the patch itself directly to me. Thank you.
> 
> Please see http://lkml.org/lkml/2006/9/19/283

Thanks. I'll review it in a couple of days and comment.

[snip]

> I think the interface should depend on the controllers and not
> the other way around. I fear that the infrastructure discussion might
> hold us back and no fruitful work will happen on the controllers.
> Once we add and agree on the controller, we can then look at the
> interface requirements (like persistence if kernel memory is being
> tracked, etc). What do you think?

I do agree with you. But we have to make an agreement with
Paul in this also...
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