bt_table
boottrace_display(struct sbuf *sbp, struct bt_table *btp, uint64_t dthres)
dotrace(struct bt_table *btp, const char *eventname, const char *tdname)
struct bt_table *btp;
_boottrace_sysctl(struct bt_table *btp, struct sysctl_oid *oidp,
static struct bt_table bt;
static struct bt_table rt;
static struct bt_table st;