On Mon, 2019-07-29 at 13:22 -0400, Chuck Lever wrote:
> Send and Receive completion is handled on a single CPU selected at
> the time each Completion Queue is allocated. Typically this is when
> an initiator instantiates an RDMA transport, or when a target
> accepts an RDMA connection.
>
> Some ULPs cannot open a connection per CPU to spread completion
> workload across available CPUs and MSI vectors. For such ULPs,
> provide an API that allows the RDMA core to select a completion
> vector based on the device's complement of available comp_vecs.
>
> ULPs that invoke ib_alloc_cq() with only comp_vector 0 are converted
> to use the new API so that their completion workloads interfere less
> with each other.
>
> Suggested-by: Håkon Bugge <haakon.bugge@xxxxxxxxxx>
> Signed-off-by: Chuck Lever <chuck.lever@xxxxxxxxxx>
> Reviewed-by: Leon Romanovsky <leonro@xxxxxxxxxxxx>
> Cc: <linux-cifs@xxxxxxxxxxxxxxx>
> Cc: <v9fs-developer@xxxxxxxxxxxxxxxxxxxxx>
This looks reasonable to me Chuck, and we have plenty of time to test it
in for-next before the next merge window, so applied to for-next, thanks
:-)
--
Doug Ledford <dledford@xxxxxxxxxx>
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