_TAILQ_HEAD
typedef _TAILQ_HEAD(lockdebuglist, struct lockdebug, volatile) lockdebuglist_t;
_TAILQ_HEAD(,struct lockdebug,volatile) cpu_ld_locks;/* !: lockdebug */
_TAILQ_HEAD(,struct lockdebug,volatile) l_ld_locks;/* !: locks held by LWP */
#define TAILQ_HEAD(name, type) _TAILQ_HEAD(name, struct type,)