static int get_time_window()

in intel_rapl_common.c [445:486]

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

static int get_time_window(struct powercap_zone *power_zone, int cid,
			   u64 *data)
{
	struct rapl_domain *rd;
	u64 val;
	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_time_exit;
	}

	switch (rd->rpl[id].prim_id) {
	case PL1_ENABLE:
		ret = rapl_read_data_raw(rd, TIME_WINDOW1, true, &val);
		break;
	case PL2_ENABLE:
		ret = rapl_read_data_raw(rd, TIME_WINDOW2, true, &val);
		break;
	case PL4_ENABLE:
		/*
		 * Time window parameter is not applicable for PL4 entry
		 * so assigining '0' as default value.
		 */
		val = 0;
		break;
	default:
		cpus_read_unlock();
		return -EINVAL;
	}
	if (!ret)
		*data = val;

get_time_exit:
	cpus_read_unlock();

	return ret;
}