static u64 rapl_unit_xlate()

in intel_rapl_common.c [614:646]

• 28 lines of code
• 7 McCabe index (conditional complexity)

static u64 rapl_unit_xlate(struct rapl_domain *rd, enum unit_type type,
			   u64 value, int to_raw)
{
	u64 units = 1;
	struct rapl_package *rp = rd->rp;
	u64 scale = 1;

	switch (type) {
	case POWER_UNIT:
		units = rp->power_unit;
		break;
	case ENERGY_UNIT:
		scale = ENERGY_UNIT_SCALE;
		/* per domain unit takes precedence */
		if (rd->domain_energy_unit)
			units = rd->domain_energy_unit;
		else
			units = rp->energy_unit;
		break;
	case TIME_UNIT:
		return rapl_defaults->compute_time_window(rp, value, to_raw);
	case ARBITRARY_UNIT:
	default:
		return value;
	}

	if (to_raw)
		return div64_u64(value, units) * scale;

	value *= units;

	return div64_u64(value, scale);
}