The meta-realtime layer is an initiative maintained by Bruce Ashfield from WindRiver, which planned to create a place where real-time activities related to the Linux kernel or system development. It was created as the placeholder for PREEMPT_RT, SCHED_DEADLINE, POSIX real-time, and alternative paring of general purpose operating systems and real-time operating systems, whether this involved a user space RTOS, a hypervisor, or an AMP solution. Also, this is where system partitioning, CPU isolation, and other related applications s reside. Of course, none of this would be considered complete without some performance profiling and benchmarking applications available for the whole Linux operating system.

Although this layer description sounds really exciting at first, its content is really poor. It is only able to incorporate a number of testing tools, more accurately, two of them: schedtool-dl and rt-app, as well as extra scripts that try to remotely run rt-app on the target machine...