LB_SLEEP1
LOCKSTAT_EVENT(lsflag, mtx, LB_ADAPTIVE_MUTEX | LB_SLEEP1,
(op == RW_WRITER ? LB_SLEEP1 : LB_SLEEP2), slpcnt, slptime,
{ "sleep_exclusive", LB_SLEEP1 },
{ "Adaptive mutex sleep", LB_ADAPTIVE_MUTEX | LB_SLEEP1 },
{ "RW lock sleep (writer)", LB_RWLOCK | LB_SLEEP1 },
{ "Sleep (writer)", LB_SLEEP1 },