As is so often the case, a notable change in an upcoming Linux kernel is both historic and no big deal. If you wanted to use Real Time Linux for your audio gear, your industrial welding laser, or your Mars rover, you have had that option for a long time presuming you didnt want to use QNX or other alternatives. Universities started making their own real time kernels in the late 1990s. A patch set, PREEMPT_RT , has existed since at least 2005. And some aspects of the real time work, like NO_HZ ,...
