On Thu, Aug 29, 2019 at 10:43:55AM -0400, Joel Fernandes wrote: [ . . . ] > Paul, do we also nuke rcu_eqs_special_set()? Currently I don't see anyone > using it. And also remove the bottom most bit of dynticks? > > Also what happens if a TLB flush broadcast is needed? Do we IPI nohz or idle > CPUs are the moment? > > All of this was introduced in: > b8c17e6664c4 ("rcu: Maintain special bits at bottom of ->dynticks counter") Adding Andy Lutomirski on CC. Andy, is this going to be used in the near term, or should we just get rid of it? Thanx, Paul