question about semantics of RT mutexes and RT throttling

[Chris Friesen <chris.friesen@xxxxxxxxxxxxx>]

Hi all,

Just wondering, with PREEMPT_RT on the 6.6 kernel (and I'm curious about 
the 6.12 kernel as well), if a realtime-priority task is on the waiter 
list for a mutex, and RT throttling kicks in, are non-RT tasks able to 
acquire the mutex?   Or does the RT task acquire the mutex even though 
it's supposed to be throttled?  Or does nobody acquire the mutex until 
RT throttling ends?

Just wondering if RT throttling helps at all if multiple RT tasks are 
contending on a mutex at the same time as non-RT tasks?

Thanks,

Chris