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Re: [PATCHv10 1/3] rdmacg: Added rdma cgroup controller

From Christoph Hellwig <hch@infradead.org>
Newsgroups linux.kernel
Subject Re: [PATCHv10 1/3] rdmacg: Added rdma cgroup controller
Date 2016-04-05 14:50 +0200
Message-ID <rkyAI-3wP-47@gated-at.bofh.it> (permalink)
References (2 earlier) <rkivU-86a-19@gated-at.bofh.it> <rklDr-1IB-3@gated-at.bofh.it> <rknYC-3xw-9@gated-at.bofh.it> <rkv9M-N0-23@gated-at.bofh.it> <rkyr0-3qn-23@gated-at.bofh.it>
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On Tue, Apr 05, 2016 at 05:39:21AM -0700, Parav Pandit wrote:
> I am not really trying to address OFED issues here. I am sure you
> understand that if ib_core.ko kernel module is in-kernel module than,
> for all the fixes/enhancements that goes to it would require people to
> upgrade to newer kernel, instead of just modules upgrade. Such heavy
> weight upgrade slows down the adoption which i am trying to avoid here
> by placing knobs in right kernel module's hand.

What a load of rubbish.  The Linux kernel is one program and should be
upgraded together.

> Its like making ib_core.ko from module to in kernel component, if I
> understand correctly nobody wants to do that.

We allow splitting subsystems out where it's easily doable to avoid the
resources consumption if they're all built in.  For cgroups it's not
really practical, but that doesn't mean you can upgrade invidual parts
of a complex program without a lot of precaution.

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Thread

Re: [PATCHv10 1/3] rdmacg: Added rdma cgroup controller Tejun Heo <tj@kernel.org> - 2016-04-04 21:40 +0200
  Re: [PATCHv10 1/3] rdmacg: Added rdma cgroup controller Parav Pandit <pandit.parav@gmail.com> - 2016-04-05 01:00 +0200
    Re: [PATCHv10 1/3] rdmacg: Added rdma cgroup controller Tejun Heo <tj@kernel.org> - 2016-04-05 03:30 +0200
      Re: [PATCHv10 1/3] rdmacg: Added rdma cgroup controller Parav Pandit <pandit.parav@gmail.com> - 2016-04-05 04:40 +0200
        Re: [PATCHv10 1/3] rdmacg: Added rdma cgroup controller Tejun Heo <tj@kernel.org> - 2016-04-05 16:10 +0200
          Re: [PATCHv10 1/3] rdmacg: Added rdma cgroup controller Tejun Heo <tj@kernel.org> - 2016-04-05 16:10 +0200
            Re: [PATCHv10 1/3] rdmacg: Added rdma cgroup controller Parav Pandit <pandit.parav@gmail.com> - 2016-04-05 16:20 +0200
          Re: [PATCHv10 1/3] rdmacg: Added rdma cgroup controller Parav Pandit <pandit.parav@gmail.com> - 2016-04-05 16:30 +0200
            Re: [PATCHv10 1/3] rdmacg: Added rdma cgroup controller Tejun Heo <tj@kernel.org> - 2016-04-05 16:50 +0200
      Re: [PATCHv10 1/3] rdmacg: Added rdma cgroup controller Christoph Hellwig <hch@infradead.org> - 2016-04-05 11:10 +0200
        Re: [PATCHv10 1/3] rdmacg: Added rdma cgroup controller Parav Pandit <pandit.parav@gmail.com> - 2016-04-05 14:40 +0200
          Re: [PATCHv10 1/3] rdmacg: Added rdma cgroup controller Christoph Hellwig <hch@infradead.org> - 2016-04-05 14:50 +0200
            Re: [PATCHv10 1/3] rdmacg: Added rdma cgroup controller Parav Pandit <pandit.parav@gmail.com> - 2016-04-05 15:00 +0200
              Re: [PATCHv10 1/3] rdmacg: Added rdma cgroup controller Leon Romanovsky <leon@leon.nu> - 2016-04-05 17:50 +0200
              Re: [PATCHv10 1/3] rdmacg: Added rdma cgroup controller Christoph Hellwig <hch@infradead.org> - 2016-04-05 19:30 +0200

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