static int nds32_pmu_map_raw_event()

in kernel/perf_event_cpu.c [81:107]

• 25 lines of code
• 10 McCabe index (conditional complexity)

static int nds32_pmu_map_raw_event(u32 raw_event_mask, u64 config)
{
	int ev_type = (int)(config & raw_event_mask);
	int idx = config >> 8;

	switch (idx) {
	case 0:
		ev_type = PFM_OFFSET_MAGIC_0 + ev_type;
		if (ev_type >= SPAV3_0_SEL_LAST || ev_type <= SPAV3_0_SEL_BASE)
			return -ENOENT;
		break;
	case 1:
		ev_type = PFM_OFFSET_MAGIC_1 + ev_type;
		if (ev_type >= SPAV3_1_SEL_LAST || ev_type <= SPAV3_1_SEL_BASE)
			return -ENOENT;
		break;
	case 2:
		ev_type = PFM_OFFSET_MAGIC_2 + ev_type;
		if (ev_type >= SPAV3_2_SEL_LAST || ev_type <= SPAV3_2_SEL_BASE)
			return -ENOENT;
		break;
	default:
		return -ENOENT;
	}

	return ev_type;
}