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Re: [PATCH 2/9] IB: add a proper completion queue abstraction

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> +/**
> + * ib_process_direct_cq - process a CQ in caller context
> + * @cq:		CQ to process
> + *
> + * This function is used to process all outstanding CQ entries on a
> + * %IB_POLL_DIRECT CQ.  It does not offload CQ processing to a different
> + * context and does not ask from completion interrupts from the HCA.
> + */
> +void ib_process_cq_direct(struct ib_cq *cq)
> +{
> +	WARN_ON_ONCE(cq->poll_ctx != IB_POLL_DIRECT);
> +
> +	__ib_process_cq(cq, INT_MAX);
> +}

I doubt INT_MAX is useful as a budget in any use-case. it can easily
hog the CPU. If the consumer is given access to poll a CQ, it must be
able to provide some way to budget it. Why not expose a budget argument
to the consumer?
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[PATCH 2/9] IB: add a proper completion queue abstraction Christoph Hellwig <hch@lst.de> - 2015-11-13 15:00 +0100
  Re: [PATCH 2/9] IB: add a proper completion queue abstraction Jason Gunthorpe <jgunthorpe@obsidianresearch.com> - 2015-11-13 19:30 +0100
    Re: [PATCH 2/9] IB: add a proper completion queue abstraction Jason Gunthorpe <jgunthorpe@obsidianresearch.com> - 2015-11-13 23:10 +0100
      Re: [PATCH 2/9] IB: add a proper completion queue abstraction Christoph Hellwig <hch@lst.de> - 2015-11-14 08:20 +0100
        Re: [PATCH 2/9] IB: add a proper completion queue abstraction Jason Gunthorpe <jgunthorpe@obsidianresearch.com> - 2015-11-23 21:40 +0100
          Re: [PATCH 2/9] IB: add a proper completion queue abstraction Jason Gunthorpe <jgunthorpe@obsidianresearch.com> - 2015-11-23 22:30 +0100
            Re: [PATCH 2/9] IB: add a proper completion queue abstraction Jason Gunthorpe <jgunthorpe@obsidianresearch.com> - 2015-11-23 23:20 +0100
              Re: [PATCH 2/9] IB: add a proper completion queue abstraction Jason Gunthorpe <jgunthorpe@obsidianresearch.com> - 2015-11-24 00:10 +0100
                Re: [PATCH 2/9] IB: add a proper completion queue abstraction Jason Gunthorpe <jgunthorpe@obsidianresearch.com> - 2015-11-24 01:10 +0100
                Re: [PATCH 2/9] IB: add a proper completion queue abstraction Jason Gunthorpe <jgunthorpe@obsidianresearch.com> - 2015-11-24 01:50 +0100
                Re: [PATCH 2/9] IB: add a proper completion queue abstraction Tom Talpey <tom@talpey.com> - 2015-11-24 01:50 +0100
                Re: [PATCH 2/9] IB: add a proper completion queue abstraction Caitlin Bestler <cait@asomi.com> - 2015-11-24 03:50 +0100
                Re: [PATCH 2/9] IB: add a proper completion queue abstraction Jason Gunthorpe <jgunthorpe@obsidianresearch.com> - 2015-11-24 08:10 +0100
                Re: [PATCH 2/9] IB: add a proper completion queue abstraction Tom Talpey <tom@talpey.com> - 2015-11-24 14:10 +0100
    Re: [PATCH 2/9] IB: add a proper completion queue abstraction Christoph Hellwig <hch@lst.de> - 2015-11-14 08:10 +0100
      Re: [PATCH 2/9] IB: add a proper completion queue abstraction Jason Gunthorpe <jgunthorpe@obsidianresearch.com> - 2015-11-23 21:10 +0100
        Re: [PATCH 2/9] IB: add a proper completion queue abstraction Christoph Hellwig <hch@lst.de> - 2015-11-23 22:00 +0100
  Re: [PATCH 2/9] IB: add a proper completion queue abstraction Sagi Grimberg <sagig@dev.mellanox.co.il> - 2015-11-15 10:50 +0100
    Re: [PATCH 2/9] IB: add a proper completion queue abstraction Christoph Hellwig <hch@lst.de> - 2015-11-15 14:00 +0100
      Re: [PATCH 2/9] IB: add a proper completion queue abstraction Sagi Grimberg <sagig@dev.mellanox.co.il> - 2015-11-15 14:30 +0100
  Re: [PATCH 2/9] IB: add a proper completion queue abstraction Sagi Grimberg <sagig@dev.mellanox.co.il> - 2015-11-18 09:00 +0100
    Re: [PATCH 2/9] IB: add a proper completion queue abstraction Christoph Hellwig <hch@lst.de> - 2015-11-20 11:20 +0100
      Re: [PATCH 2/9] IB: add a proper completion queue abstraction Sagi Grimberg <sagig@dev.mellanox.co.il> - 2015-11-22 11:00 +0100
        Re: [PATCH 2/9] IB: add a proper completion queue abstraction Christoph Hellwig <hch@lst.de> - 2015-11-22 11:20 +0100
          Re: [PATCH 2/9] IB: add a proper completion queue abstraction Sagi Grimberg <sagig@dev.mellanox.co.il> - 2015-11-22 11:40 +0100
            Re: [PATCH 2/9] IB: add a proper completion queue abstraction Christoph Hellwig <hch@lst.de> - 2015-11-22 14:30 +0100
              Re: [PATCH 2/9] IB: add a proper completion queue abstraction Sagi Grimberg <sagig@dev.mellanox.co.il> - 2015-11-22 16:00 +0100
                Re: [PATCH 2/9] IB: add a proper completion queue abstraction Bart Van Assche <bvanassche@acm.org> - 2015-11-22 18:00 +0100
  Re: [PATCH 2/9] IB: add a proper completion queue abstraction Christoph Hellwig <hch@lst.de> - 2015-11-18 15:10 +0100

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