static int get_current_power_limit()

in intel_rapl_common.c [372:412]

• 37 lines of code
• 6 McCabe index (conditional complexity)

static int get_current_power_limit(struct powercap_zone *power_zone, int cid,
				   u64 *data)
{
	struct rapl_domain *rd;
	u64 val;
	int prim;
	int ret = 0;
	int id;

	cpus_read_lock();
	rd = power_zone_to_rapl_domain(power_zone);
	id = contraint_to_pl(rd, cid);
	if (id < 0) {
		ret = id;
		goto get_exit;
	}

	switch (rd->rpl[id].prim_id) {
	case PL1_ENABLE:
		prim = POWER_LIMIT1;
		break;
	case PL2_ENABLE:
		prim = POWER_LIMIT2;
		break;
	case PL4_ENABLE:
		prim = POWER_LIMIT4;
		break;
	default:
		cpus_read_unlock();
		return -EINVAL;
	}
	if (rapl_read_data_raw(rd, prim, true, &val))
		ret = -EIO;
	else
		*data = val;

get_exit:
	cpus_read_unlock();

	return ret;
}