Support for PREEMPT_RT kernel

[tpimh]

I am using RK3399, and I want to run a realtime kernel. Rockchip seems to provide source for Linux 4.4.176, 4.19.87, 4.19.104 and 5.10.53 with PREEMPT_RT patches applied. Are there any precompiled real time kernels in the repositories?

[johang]

The builds are using official Debian/Ubuntu kernels. If you want patches or different config you'll have to build it yourself.

[tpimh]

Debian does provide a config with PREEMPT_RT enabled in their source package.

[johang]

Interesting. Didn't know that. Try installing it and see if it's picked up correctly in /boot/boot.cmd. You may have to remove the regular kernel also (apt remove linux-image-arm64).