lockdebug
typedef _TAILQ_HEAD(lockdebuglist, struct lockdebug, volatile) lockdebuglist_t;
_TAILQ_ENTRY(struct lockdebug, volatile) ld_chain;
_TAILQ_ENTRY(struct lockdebug, volatile) ld_achain;
struct lockdebug;
_TAILQ_HEAD(,struct lockdebug,volatile) cpu_ld_locks;/* !: lockdebug */
_TAILQ_HEAD(,struct lockdebug,volatile) l_ld_locks;/* !: locks held by LWP */
struct lockdebug;
struct lockdebug;
TAILQ_HEAD(, lockdebug) ld_all;