turnstile_block|turnstile_block
turnstile_changepri|turnstile_changepri
turnstile_exit|turnstile_exit
turnstile_init|turnstile_init
turnstile_lookup|turnstile_lookup
turnstile_unsleep|turnstile_unsleep
turnstile_wakeup|turnstile_wakeup
tunattach|tunattach