On Thu, Sep 09, 2021 at 07:38:06AM +0200, Maarten Lankhorst wrote: > > You'll need a similar hunk in ww_rt_mutex.c > > What tree has that file? Linus' tree should have it. Per commit: f8635d509d80 ("locking/ww_mutex: Implement rtmutex based ww_mutex API functions")