On Mon, Mar 22, 2021 at 11:49:50AM +0100, Sebastian Andrzej Siewior wrote: > On 2021-03-22 11:30:18 [+0100], Greg KH wrote: > > On Mon, Mar 22, 2021 at 11:19:58AM +0100, Sebastian Andrzej Siewior wrote: > > > This is a heads up to the RT stable team: The following patch made into > > > the stable tree. RT-version prior to the v5.4 series don't have > > > CONFIG_PREEMPT_RT defined. It is needed to use CONFIG_PREEMPT_RT_BASE in > > > this context in order to keep RT working. > > > > Ah, I didn't realize this was different, I thought I was making things > > easier for you all, not harder :( > > > > Should I just drop the commit from older than 5.4 trees? > > No, you should backport it as the bug/issue exists in all trees. > If you want to do a favour to the RT-stable team, please replace > CONFIG_PREEMPT_RT with CONFIG_PREEMPT_RT_BASE. > > sed -i 's@CONFIG_PREEMPT_RT@CONFIG_PREEMPT_RT_BASE@' patch > > Should do the work. Done, thanks! greg k-h