HI, For a while I am unable to apply the RT patch ... Once compiled the kernel is even more SMP PREEMPT but only SMP. I tried with Linux-RT and Linux-RT-BFQ both of AUR and the result is the same. After a few research I saw that there was a conflict between BPF and patch RT, what I could find dated a year ago, is it always the case? I also put their hands on another patch that allows you to co-exist BPF and PREEMPT_RT, this one also dates a year ago, is it still relevant, I did not find any more recent ... Kind regards.
