I am getting started with Linux-RT and browsing in the Internet I have realized that isn't the same "full Linux-RT" and "PREEMPT_RT kernel config". Which is the difference?
I am working in a project and need a RTOS, so I decided to get Linux.
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Why would you think you need lower interrupt latency than what is already provided by the kernel without the RT patches? – stark Jun 22 '21 at 19:25
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_"need a RTOS, so I decided to get Linux"_ is non-sequitur. Linux is not an RTOS - even with PREEMT_RT. You'd use it if your application needed Linux services or POSIX code reuse (some library you needed perhaps) and and some "soft" real-time requirements, and of course your platform has plenty of memory and a fast processor. Also if you don't care about taking several tens of seconds to boot. – Clifford Jun 27 '21 at 15:58
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... Also did you mean Linux-RT and not RTLinux? – Clifford Jun 27 '21 at 16:04