From mboxrd@z Thu Jan  1 00:00:00 1970
From: Parav Pandit <pandit.parav@gmail.com>
Subject: Re: [PATCHv12 1/3] rdmacg: Added rdma cgroup controller
Date: Mon, 19 Sep 2016 22:30:15 +0530
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To: "Dalessandro, Dennis" <dennis.dalessandro@intel.com>
Cc: "leon@kernel.org" <leon@kernel.org>, "lizefan@huawei.com" <lizefan@huawei.com>, "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>, "corbet@lwn.net" <corbet@lwn.net>, "linux-rdma@vger.kernel.org" <linux-rdma@vger.kernel.org>, "cgroups@vger.kernel.org" <cgroups@vger.kernel.org>, "ogerlitz@mellanox.com" <ogerlitz@mellanox.com>, "hch@lst.de" <hch@lst.de>, "linux-security-module@vger.kernel.org" <linux-security-module@vger.kernel.org>, "haggaie@mellanox.com" <haggaie@mellanox.com>, "hannes@cmpxchg.org" <hannes@cmpxchg.org>, "Hefty, Sean" <sean.hefty@intel.com>, "akpm@linux-foundation.org" <akpm@linux-foundation.org>, "james.l.morris@oracle.com" <james.l.morris@oracle.com>, "tj@kernel.org" <tj@kernel.org>, "liranl@mellanox.com" <liranl@mellanox.com>

Hi Denny,

On Mon, Sep 19, 2016 at 6:40 PM, Dalessandro, Dennis
<dennis.dalessandro@intel.com> wrote:
> On Wed, 2016-09-14 at 12:36 +0530, Parav Pandit wrote:
>> Hi Dennis,
>>
>> Do you know how would HFI1 driver would work along with rdma cgroup?
>
> Keep in mind HFI1 driver has two "modes" of operation. We support
> verbs, and would surely fall in line with whatever cgroups do for IB
> core.
Thanks for the feedback.

> For our psm interface, not sure how cgroups would come into play.
> Psm is designed to expose the hw to user and avoid the kernel when
> possible adding more kernel control is sort of contrary to that.
>
Yes, PSM is currently out of RDMA cgroup and in future we can take a
look on how things shape as subsystem if it does.

> Now that being said, Christoph recently made mention of maybe having a
> drivers/psm [1]. I really haven't had a chance to think about the
> implications of that, but maybe it's worth considering, after all we
> have two implementations, qib and hfi1. So anyway I'm not sure we need
> to be too concerned about cgroups right now as far as psm side of
> things goes.
>
o.k.