[$] Synchronized GPU priority scheduling

Since the early days, Unix-like systems have implemented the concept ofprocess priorities, where higher-priority processes are given moreCPU time to get their work done. Implementations have changed, andalternatives (such as deadline scheduling)are available for specialized situations, but the core priority (or, in aninverted sense, "niceness") concept remains essentially the same. What should happen, though, in a world whereincreasing amounts of computing work is done outside of the CPU? TvrtkoUrsulin has put together apatch set showing how the nice mechanism can be extended to GPUs aswell.