1 // SPDX-License-Identifier: GPL-2.0-only
76 	 * SGI8-15 can be reserved by secure firmware, and thus may
114 	return cpu_vtable[cpu] ? 0 : -ENOMEM;  in secondary_biglittle_prepare()
119 	init_proc_vtable(lookup_processor(read_cpuid_id())->proc);  in secondary_biglittle_init()
137 		return -ENOSYS;  in __cpu_up()
172 			ret = -EIO;  in __cpu_up()
273 	 * OK - migrate IRQs away from this CPU  in __cpu_disable()
282 	 * to write-back dirty lines to unified caches shared by all CPUs.  in __cpu_disable()
291  * called on the thread which is asking for a CPU to be shutdown -
304 	 * platform_cpu_kill() is generally expected to do the powering off  in __cpu_die()
317  * Note that we disable IRQs here, but do not re-enable them
319  * of the other hotplug-cpu capable cores, so presumably coming
333 	 * before platform_cpu_kill() gets called - which may disable  in arch_cpu_idle_dead()
348 	 * powering down, to ensure that the completion is visible to the  in arch_cpu_idle_dead()
372 	 * Do not return to the idle loop - jump back to the secondary  in arch_cpu_idle_dead()
380 		: "r" (task_stack_page(current) + THREAD_SIZE - 8));  in arch_cpu_idle_dead()
386  * per-processor storage.
392 	cpu_info->loops_per_jiffy = loops_per_jiffy;  in smp_store_cpu_info()
393 	cpu_info->cpuid = read_cpuid_id();  in smp_store_cpu_info()
414 	cpu_switch_mm(mm->pgd, mm);  in secondary_start_kernel()
425 	current->active_mm = mm;  in secondary_start_kernel()
454 	 * before we continue - which happens after __cpu_up returns.  in secondary_start_kernel()
511 		 * re-initialize the map in the platforms smp_prepare_cpus()  in smp_prepare_cpus()
549 		seq_printf(p, "%*s%u: ", prec - 1, "IPI", i);  in show_ipi_list()
591  * ipi_cpu_stop - handle IPI from smp_send_stop()
627  * Main handler for inter-processor interrupts
703 	do_handle_IPI(irq - ipi_irq_base);  in ipi_handler()
765 	while (num_online_cpus() > 1 && timeout--)  in smp_send_stop()
792 	return -EINVAL;  in setup_profiling_timer()
806 	struct cpumask *cpus = freq->policy->cpus;  in cpufreq_callback()
810 	if (freq->flags & CPUFREQ_CONST_LOOPS)  in cpufreq_callback()
817 			per_cpu(l_p_j_ref_freq, cpu) = freq->old;  in cpufreq_callback()
822 			global_l_p_j_ref_freq = freq->old;  in cpufreq_callback()
826 	if ((val == CPUFREQ_PRECHANGE  && freq->old < freq->new) ||  in cpufreq_callback()
827 	    (val == CPUFREQ_POSTCHANGE && freq->old > freq->new)) {  in cpufreq_callback()
830 						freq->new);  in cpufreq_callback()
833 				    per_cpu(l_p_j_ref_freq, first), freq->new);  in cpufreq_callback()