I was under the impression that PREEMPT_RT in being merged into mainline piece by piece already. If you look at the patches, 4.4-rt patch is 987864 bytes in siz

I was under the impression that PREEMPT_RT in being merged into mainline piece by piece already. If you look at the patches, 4.4-rt patch is 987864 bytes in size while 5.15-rt patch is only 369182 bytes. So, crudely estimating 2/3rds of -rt has already been merged to mainline between 4.4 and 5.15. https://wiki.linuxfoundation.org/realtime/rtl/blog https://wiki.linuxfoundation.org/realtime/rtl/blog