Hi all, New this time is that Josef identified and fixed a problem he had with it. He also provided many compile fixes. Meanwhile I managed to reflow the patches so that the whole now looks like a normal patch series.
Other than that, it should still very much be what it was before.. From the previous announce: --- So after staring at all that PELT stuff and working my way through it again: https://lkml.kernel.org/r/[email protected] I started doing some patches to fix some of the identified broken. So here are a few too many patches that do: - fix 'reweight_entity' to instantly propagate the change in se->load.weight. - rewrite/fix the propagate on migrate (attach/detach) - introduce the hierarchical runnable_load_avg, as proposed by Tejun. - synchronous detach for runnable migrates - aligns the PELT windows between a cfs_rq and all its se's - deals with random fallout from the above (some of this needs folding back and reordering, but its all well past the point I should post this anyway). IIRC pjt recently mentioned the reweight_entity thing, and I have very vague memories he once talked about the window alignment thing -- which I only remembered after (very painfully) having discovered I really needed that. In any case, the reason I did the reweight_entity thing first, is because I feel that is the right place to also propagate the hierarchical runnable_load, as that is the natural place where a group's cfs_rq is coupled to its sched_entity. And the hierachical runnable_load needs that coupling. TJ did it by hijacking the attach/detach migrate code, which I didn't much like. In any case, all that got me looking at said attach/detach migrate code and find pain. So I went and fixed that too. --- Still very many thanks to Vincent, Dietmar and Josef for poking at these patches. If nothing untowards happens, I plan to get them merged after the immenent merge window.
