acquire_read_seqlock
extern uint32 acquire_read_seqlock(seqlock* lock);
count = acquire_read_seqlock(&sUserTimerLock);
count = acquire_read_seqlock(&sUserTimerLock);
count = acquire_read_seqlock(&sUserTimerLock);
count = acquire_read_seqlock(&sUserTimerLock);
count = acquire_read_seqlock(&gCPU[cpu].active_time_lock);
count = acquire_read_seqlock(&fActiveTimeLock);