get_bitmask_order
desc->dwcnt = is_power_of_2(len) ? len : 1 << get_bitmask_order(len);
((get_bitmask_order(entries) - 2) << 12));
setbits32(&rmu->msg_regs->imr, (get_bitmask_order(entries) - 2) << 12);
bits = get_bitmask_order(VLAN_VID_MASK);
bits = get_bitmask_order(VLAN_VID_MASK);
bits = get_bitmask_order(VLAN_VID_MASK);
zone = get_bitmask_order(status) - 1;
sbi->s_block_shift = get_bitmask_order(sbi->s_blocksize) -
get_bitmask_order(sbi->s_sys_blocksize);