Re: [PATCHv12 1/3] rdmacg: Added rdma cgroup controller

From: Parav Pandit
Date: Mon Sep 19 2016 - 13:00:24 EST

Hi Denny,

On Mon, Sep 19, 2016 at 6:40 PM, Dalessandro, Dennis
<dennis.dalessandro@xxxxxxxxx> 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.