asmlinkage __init void secondary_start_kernel()

in kernel/smp.c [116:148]

• 17 lines of code
• 1 McCabe index (conditional complexity)

asmlinkage __init void secondary_start_kernel(void)
{
	struct mm_struct *mm = &init_mm;
	unsigned int cpu = smp_processor_id();
	/*
	 * All kernel threads share the same mm context; grab a
	 * reference and switch to it.
	 */
	mmgrab(mm);
	current->active_mm = mm;
	cpumask_set_cpu(cpu, mm_cpumask(mm));

	pr_info("CPU%u: Booted secondary processor\n", cpu);

	setup_cpuinfo();
	openrisc_clockevent_init();

	notify_cpu_starting(cpu);

	/*
	 * OK, now it's safe to let the boot CPU continue
	 */
	complete(&cpu_running);

	synchronise_count_slave(cpu);
	set_cpu_online(cpu, true);

	local_irq_enable();
	/*
	 * OK, it's off to the idle thread for us
	 */
	cpu_startup_entry(CPUHP_AP_ONLINE_IDLE);
}