highest_bit
int highest_bit;
highest_bit = fls64(le64_to_cpu(pcaps.phy_type_high));
if (highest_bit) {
BIT_ULL(highest_bit - 1);
highest_bit = fls64(le64_to_cpu(pcaps.phy_type_low));
if (highest_bit) {
BIT_ULL(highest_bit - 1);
if (unlikely(highest_bit(mask) == SCX_KF_CPU_RELEASE &&
if (unlikely(highest_bit(mask) == SCX_KF_DISPATCH &&