Function turnstile_alloc

freebsd/kern/subr_turnstile.c:540–545

* Get a turnstile for a new thread. */

 * Get a turnstile for a new thread.
 */
struct turnstile *
turnstile_alloc(void)
{

	return (uma_zalloc(turnstile_zone, M_WAITOK));
}

/*
 * Free a turnstile when a thread is destroyed.