Re: [PATCHv1 0/6] rdma controller support

From	Parav Pandit <pandit.parav@gmail.com>
Newsgroups	linux.kernel
Subject	Re: [PATCHv1 0/6] rdma controller support
Date	2016-01-07 22:10 +0100
Message-ID	<qOpYK-5eu-9@gated-at.bofh.it> (permalink)
References	(5 earlier) <qOp2F-4BD-15@gated-at.bofh.it> <qOpvJ-4NZ-11@gated-at.bofh.it> <qOpvJ-4NZ-21@gated-at.bofh.it> <qOpFp-4Sh-11@gated-at.bofh.it> <qOpFp-4Sh-9@gated-at.bofh.it>
Organization	linux.* mail to news gateway

Show all headers | View raw

On Fri, Jan 8, 2016 at 2:19 AM, Tejun Heo <tj@kernel.org> wrote:
> Hello, Parav.
>
> On Fri, Jan 08, 2016 at 02:16:59AM +0530, Parav Pandit wrote:
>> Let me think through it. Its been late night for me currently. So dont
>> want to conclude in hurry.
>
> Sure thing.
>
>> At high level it looks doable by maintaining hash table head on per
>> device basis, that further reduces hash contention by one level.
>> I will get back on this tomorrow.
>
> Hmmm... why would it need a hash table?  Let's say there's a struct
> rdma_device for each rdma_device and then that stuct can simply have
> rdma_device->res_table[] or whatever to track limits and consumptions
> and rdma_device->res_enabled mask to tell which resources are enabled
> on the device.
>

That table won't be sufficient, because rdma_device is shared among
multiple rdma_cgroups each such cgroup has different individual
resource limit and usage count. This is currently rpool structure.
For res_table[] needs to be per cgroup basis.


> Thanks.
>
> --
> tejun

Thread

[PATCHv1 0/6] rdma controller support Parav Pandit <pandit.parav@gmail.com> - 2016-01-05 20:00 +0100
  [PATCHv1 4/6] IB/core: rdmacg support infrastructure APIs Parav Pandit <pandit.parav@gmail.com> - 2016-01-05 20:10 +0100
  [PATCHv1 5/6] IB/core: use rdma cgroup for resource accounting Parav Pandit <pandit.parav@gmail.com> - 2016-01-05 20:10 +0100
  [PATCHv1 2/6] IB/core: Added members to support rdma cgroup Parav Pandit <pandit.parav@gmail.com> - 2016-01-05 20:10 +0100
    Re: [PATCHv1 2/6] IB/core: Added members to support rdma cgroup Tejun Heo <tj@kernel.org> - 2016-01-05 23:00 +0100
      Re: [PATCHv1 2/6] IB/core: Added members to support rdma cgroup Parav Pandit <pandit.parav@gmail.com> - 2016-01-07 00:20 +0100
        Re: [PATCHv1 2/6] IB/core: Added members to support rdma cgroup Tejun Heo <tj@kernel.org> - 2016-01-07 16:10 +0100
          Re: [PATCHv1 2/6] IB/core: Added members to support rdma cgroup Parav Pandit <pandit.parav@gmail.com> - 2016-01-07 20:50 +0100
  [PATCHv1 6/6] rdmacg: Added documentation for rdma controller. Parav Pandit <pandit.parav@gmail.com> - 2016-01-05 20:10 +0100
    Re: [PATCHv1 6/6] rdmacg: Added documentation for rdma controller. Tejun Heo <tj@kernel.org> - 2016-01-05 23:00 +0100
      Re: [PATCHv1 6/6] rdmacg: Added documentation for rdma controller. Parav Pandit <pandit.parav@gmail.com> - 2016-01-06 23:50 +0100
        Re: [PATCHv1 6/6] rdmacg: Added documentation for rdma controller. Tejun Heo <tj@kernel.org> - 2016-01-07 00:20 +0100
          Re: [PATCHv1 6/6] rdmacg: Added documentation for rdma controller. Parav Pandit <pandit.parav@gmail.com> - 2016-01-07 01:00 +0100
            Re: [PATCHv1 6/6] rdmacg: Added documentation for rdma controller. Tejun Heo <tj@kernel.org> - 2016-01-07 16:50 +0100
              Re: [PATCHv1 6/6] rdmacg: Added documentation for rdma controller. Parav Pandit <pandit.parav@gmail.com> - 2016-01-07 20:50 +0100
  [PATCHv1 1/6] rdmacg: Added rdma cgroup header file Parav Pandit <pandit.parav@gmail.com> - 2016-01-05 20:10 +0100
  [PATCHv1 3/6] rdmacg: implements rdma cgroup Parav Pandit <pandit.parav@gmail.com> - 2016-01-05 20:10 +0100
    Re: [PATCHv1 3/6] rdmacg: implements rdma cgroup Tejun Heo <tj@kernel.org> - 2016-01-05 23:10 +0100
      Re: [PATCHv1 3/6] rdmacg: implements rdma cgroup Parav Pandit <pandit.parav@gmail.com> - 2016-01-07 00:40 +0100
        Re: [PATCHv1 3/6] rdmacg: implements rdma cgroup Tejun Heo <tj@kernel.org> - 2016-01-07 16:30 +0100
          Re: [PATCHv1 3/6] rdmacg: implements rdma cgroup Parav Pandit <pandit.parav@gmail.com> - 2016-01-07 21:30 +0100
            Re: [PATCHv1 3/6] rdmacg: implements rdma cgroup Tejun Heo <tj@kernel.org> - 2016-01-07 21:30 +0100
              Re: [PATCHv1 3/6] rdmacg: implements rdma cgroup Parav Pandit <pandit.parav@gmail.com> - 2016-01-07 21:40 +0100
                Re: [PATCHv1 3/6] rdmacg: implements rdma cgroup Tejun Heo <tj@kernel.org> - 2016-01-07 21:50 +0100
  Re: [PATCHv1 0/6] rdma controller support Tejun Heo <tj@kernel.org> - 2016-01-05 23:00 +0100
    Re: [PATCHv1 0/6] rdma controller support Parav Pandit <pandit.parav@gmail.com> - 2016-01-07 00:20 +0100
      Re: [PATCHv1 0/6] rdma controller support Tejun Heo <tj@kernel.org> - 2016-01-07 16:10 +0100
        Re: [PATCHv1 0/6] rdma controller support Tejun Heo <tj@kernel.org> - 2016-01-07 21:10 +0100
          Re: [PATCHv1 0/6] rdma controller support Parav Pandit <pandit.parav@gmail.com> - 2016-01-07 21:40 +0100
            Re: [PATCHv1 0/6] rdma controller support Tejun Heo <tj@kernel.org> - 2016-01-07 21:40 +0100
              Re: [PATCHv1 0/6] rdma controller support Tejun Heo <tj@kernel.org> - 2016-01-07 21:50 +0100
                Re: [PATCHv1 0/6] rdma controller support Tejun Heo <tj@kernel.org> - 2016-01-07 22:00 +0100
                Re: [PATCHv1 0/6] rdma controller support Parav Pandit <pandit.parav@gmail.com> - 2016-01-07 22:10 +0100
                Re: [PATCHv1 0/6] rdma controller support Tejun Heo <tj@kernel.org> - 2016-01-07 22:10 +0100
                Re: [PATCHv1 0/6] rdma controller support Parav Pandit <pandit.parav@gmail.com> - 2016-01-07 22:20 +0100
                Re: [PATCHv1 0/6] rdma controller support Tejun Heo <tj@kernel.org> - 2016-01-07 22:10 +0100
                Re: [PATCHv1 0/6] rdma controller support Parav Pandit <pandit.parav@gmail.com> - 2016-01-07 22:10 +0100
              Re: [PATCHv1 0/6] rdma controller support Parav Pandit <pandit.parav@gmail.com> - 2016-01-07 21:50 +0100
        Re: [PATCHv1 0/6] rdma controller support Parav Pandit <pandit.parav@gmail.com> - 2016-01-07 21:10 +0100

csiph-web