I have BuildRoot linux (4.14.78), which I build by myself.
As a reference there is Debian binary (5.xx) downloaded from your site.
Just reminder that we have IMX8M Plus SoM on HummingBoard board.
The issue that I have is that looks like “nice” command and nice() function don’t work.
Also when I checking the “top” command, I can’t see the “NI” column, which represents the USER NICE priority scheduling.
If you check debian “top” command (screenshots attached) this column exist.
As far as I know the “NICE” priority should be supported in all kernels 4.xx.
Do you know what configuration should be changed to add support for “nice” command in kernel