Documentation/locking/locktypes.rst

125 PREEMPT_RT does not change the semaphore implementation because counting
150  Because an rw_semaphore writer cannot grant its priority to multiple
152  thus starving even high-priority writers.  In contrast, because readers
277    to RUNNING, but that does not work here because the task must remain
316  - Because an rwlock_t writer cannot grant its priority to multiple
318    thus starving even high-priority writers.  In contrast, because readers
341 On a PREEMPT_RT kernel this code sequence breaks because local_lock_irq()
375 because local_lock_irqsave() does not disable interrupts due to the
415 On PREEMPT_RT kernel this code sequence breaks because RT-mutex requires a
432 not allow to acquire p->lock because get_cpu_ptr() implicitly disables
459 While correct on a non-PREEMPT_RT kernel, this breaks on PREEMPT_RT because
488 But this code fails on PREEMPT_RT kernels because the memory allocator is
491 while holding normal non-raw spinlocks because they do not disable
501 PREEMPT_RT cannot substitute bit spinlocks because a single bit is too