RULE = always ((RT and SLEEP) imply (RT_FRIENDLY_SLEEP or ALLOWLIST))

RT_FRIENDLY_SLEEP = (RT_VALID_SLEEP_REASON or KERNEL_THREAD)
                and ((not WAKE) until RT_FRIENDLY_WAKE)

RT_VALID_SLEEP_REASON = FUTEX_WAIT
                     or RT_FRIENDLY_NANOSLEEP

RT_FRIENDLY_NANOSLEEP = CLOCK_NANOSLEEP
                    and NANOSLEEP_TIMER_ABSTIME
                    and (NANOSLEEP_CLOCK_MONOTONIC or NANOSLEEP_CLOCK_TAI)

RT_FRIENDLY_WAKE = WOKEN_BY_EQUAL_OR_HIGHER_PRIO
                or WOKEN_BY_HARDIRQ
                or WOKEN_BY_NMI
                or ABORT_SLEEP
                or KTHREAD_SHOULD_STOP

ALLOWLIST = BLOCK_ON_RT_MUTEX
         or FUTEX_LOCK_PI
         or TASK_IS_RCU
         or TASK_IS_MIGRATION