[gmiller123456]

>you can't publish performance metrics without approval

Curious to know if anything knows if that's actually enforceable. The GPL gives you permission to use an distribute a program and code. I can see where if you got your copy straight from RTOS, they can enforce that clause. But, to me, the GPL seems to give everyone the right to distribute the source without that clause. And it seems to explicitly forbid the addition of additional licensing terms:

You may not impose any further restrictions on the recipients' exercise of the rights granted herein