On Mon, 2017-08-14 at 13:03 -0700, Sukadev Bhattiprolu wrote: > As Ben pointed out, we are going to be have limit the number of TIDs (to > be within the size limits), so we won't be able to use task_pid_nr()? But > if we assign the TIDs in the RX_WIN_OPEN ioctl, then only the FTW processes > will need the TIDR value.
But you'll have to assign it for all present and future threads of that process which is somewhat hard to do without races. > Can we then assign new, globally-unique TID values for now and have the ioctl > fail with -EAGAIN if all TIDs are in use? We can extend to per-process TID > values, later? Why would you want to do that ? Ben.