void __init setup_smp()

in kernel/smpboot.c [76:119]

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

void __init setup_smp(void)
{
	struct device_node *dn;
	int hart;
	bool found_boot_cpu = false;
	int cpuid = 1;

	cpu_set_ops(0);

	for_each_of_cpu_node(dn) {
		hart = riscv_of_processor_hartid(dn);
		if (hart < 0)
			continue;

		if (hart == cpuid_to_hartid_map(0)) {
			BUG_ON(found_boot_cpu);
			found_boot_cpu = 1;
			early_map_cpu_to_node(0, of_node_to_nid(dn));
			continue;
		}
		if (cpuid >= NR_CPUS) {
			pr_warn("Invalid cpuid [%d] for hartid [%d]\n",
				cpuid, hart);
			break;
		}

		cpuid_to_hartid_map(cpuid) = hart;
		early_map_cpu_to_node(cpuid, of_node_to_nid(dn));
		cpuid++;
	}

	BUG_ON(!found_boot_cpu);

	if (cpuid > nr_cpu_ids)
		pr_warn("Total number of cpus [%d] is greater than nr_cpus option value [%d]\n",
			cpuid, nr_cpu_ids);

	for (cpuid = 1; cpuid < nr_cpu_ids; cpuid++) {
		if (cpuid_to_hartid_map(cpuid) != INVALID_HARTID) {
			cpu_set_ops(cpuid);
			set_cpu_possible(cpuid, true);
		}
	}
}