Changelog v4 - Rewrote patch to return all quota when cfs_b has very litte. - Removed documentation changes, as bursting is no longer possible with this new solution. After the suggestion from Ben Segall to set min_cfs_rq_runtime=0, I came up this in an attempt to balance the desire leave runtime on the per-cpu queues with the desire to use this quota on other per-cpu rq. Basically we now check the cfs_b on each return, and decide if all the remaining time should be returned or to leave min_cfs_rq_runtime on the per-cpu queue based on how much time is remaining on the cfs_b. As a result this mostly gives us the benefits of both worlds.
