Support VF interrupt binding to specified CPU

[hustcat]

CNI spec support ordered plugin chaining, we can write a interrupt binding plugin to bind interrupt of VF to assigned CPU. @rkamudhan

[rkamudhan]

yes, that is great idea to work on.

[rkamudhan]

@hustcat Can we have a discussion on this implementation ?

[lmdaly]

@hustcat @rkamudhan We are currently exploring this feature in our PoC - maybe we can collaborate together on it?

[hustcat]

Yeah, @lmdaly @rkamudhan Do you have any detailed implementation?

[hustcat]

We should think how to coordinate with k8s, and k8s don't support cpuset for container now. Ref k8s #10570.

[lmdaly]

@hustcat the new native CPU Manager in Kubernetes uses cpusets to assigns cores at a container level. It should be an alpha feature in K8s 1.8.
Here is the proposal doc: https://github.com/ConnorDoyle/community/blob/a21b6adf7382ccf88a0ca42b133599af39eb4dd0/contributors/design-proposals/cpu-manager.md
and the code:
kubernetes/kubernetes#49186

[ConnorDoyle]

Here's the stable link to the proposal (it has been merged): CPU manager

[ConnorDoyle]

Here's a general top-level issue to help track work (since we need more than just coordination with CNI): kubernetes/kubernetes#49964