Hi, One series in two parts; the first part (patches 1-5) should be in reasonable shape and ought to fix the original issues that got this whole thing started. The second part (patches 6-11) are still marked RFC and do scary things to try and make NOHZ_FULL work better. Please consider.. PS. Paul, I did do break RCU a bit and I'm not sure about the best way to put it back together, please see patch 8 for details.