RW_OWNR_WIDTH
#define RW_LONG (RW_ADDR_WIDTH + 1 + RW_OWNR_WIDTH)
#define RW_LBL_OFFSET (RW_ADDR_WIDTH + RW_OWNR_WIDTH - 3 - RW_LBL_WIDTH)
RW_OWNR_WIDTH, "OWNER/COUNT", "FLAGS", "WAITERS");
mdb_printf("%*s", RW_OWNR_WIDTH, "1");
mdb_printf("%*p", RW_OWNR_WIDTH, wwwh & RW_OWNER);
mdb_printf("%*s", RW_OWNR_WIDTH, count ? c : "-");