83 static void ipi_setup(int cpu);
86 static void ipi_teardown(int cpu);
87 static int op_cpu_kill(unsigned int cpu);
89 static inline int op_cpu_kill(unsigned int cpu)  in op_cpu_kill()  argument
100 static int boot_secondary(unsigned int cpu, struct task_struct *idle)  in boot_secondary()  argument
102 	const struct cpu_operations *ops = get_cpu_ops(cpu);  in boot_secondary()
105 		return ops->cpu_boot(cpu);  in boot_secondary()
112 int __cpu_up(unsigned int cpu, struct task_struct *idle)  in __cpu_up()  argument
125 	ret = boot_secondary(cpu, idle);  in __cpu_up()
127 		pr_err("CPU%u: failed to boot: %d\n", cpu, ret);  in __cpu_up()
137 	if (cpu_online(cpu))  in __cpu_up()
140 	pr_crit("CPU%u: failed to come online\n", cpu);  in __cpu_up()
149 		       cpu, status);  in __cpu_up()
153 		if (!op_cpu_kill(cpu)) {  in __cpu_up()
154 			pr_crit("CPU%u: died during early boot\n", cpu);  in __cpu_up()
157 		pr_crit("CPU%u: may not have shut down cleanly\n", cpu);  in __cpu_up()
160 		pr_crit("CPU%u: is stuck in kernel\n", cpu);  in __cpu_up()
162 			pr_crit("CPU%u: does not support 52-bit VAs\n", cpu);  in __cpu_up()
165 				cpu, PAGE_SIZE / SZ_1K);  in __cpu_up()
170 		panic("CPU%u detected unsupported configuration\n", cpu);  in __cpu_up()
200 	unsigned int cpu = smp_processor_id();  in secondary_start_kernel()  local
218 	rcu_cpu_starting(cpu);  in secondary_start_kernel()
228 	ops = get_cpu_ops(cpu);  in secondary_start_kernel()
236 	store_cpu_topology(cpu);  in secondary_start_kernel()
241 	notify_cpu_starting(cpu);  in secondary_start_kernel()
243 	ipi_setup(cpu);  in secondary_start_kernel()
245 	numa_add_cpu(cpu);  in secondary_start_kernel()
253 					 cpu, (unsigned long)mpidr,  in secondary_start_kernel()
256 	set_cpu_online(cpu, true);  in secondary_start_kernel()
268 static int op_cpu_disable(unsigned int cpu)  in op_cpu_disable()  argument
270 	const struct cpu_operations *ops = get_cpu_ops(cpu);  in op_cpu_disable()
284 		return ops->cpu_disable(cpu);  in op_cpu_disable()
294 	unsigned int cpu = smp_processor_id();  in __cpu_disable()  local
297 	ret = op_cpu_disable(cpu);  in __cpu_disable()
301 	remove_cpu_topology(cpu);  in __cpu_disable()
302 	numa_remove_cpu(cpu);  in __cpu_disable()
308 	set_cpu_online(cpu, false);  in __cpu_disable()
309 	ipi_teardown(cpu);  in __cpu_disable()
319 static int op_cpu_kill(unsigned int cpu)  in op_cpu_kill()  argument
321 	const struct cpu_operations *ops = get_cpu_ops(cpu);  in op_cpu_kill()
331 	return ops->cpu_kill(cpu);  in op_cpu_kill()
338 void arch_cpuhp_cleanup_dead_cpu(unsigned int cpu)  in arch_cpuhp_cleanup_dead_cpu()  argument
342 	pr_debug("CPU%u: shutdown\n", cpu);  in arch_cpuhp_cleanup_dead_cpu()
350 	err = op_cpu_kill(cpu);  in arch_cpuhp_cleanup_dead_cpu()
352 		pr_warn("CPU%d may not have shut down cleanly: %d\n", cpu, err);  in arch_cpuhp_cleanup_dead_cpu()
361 	unsigned int cpu = smp_processor_id();  in cpu_die()  local
362 	const struct cpu_operations *ops = get_cpu_ops(cpu);  in cpu_die()
376 	ops->cpu_die(cpu);  in cpu_die()
382 static void __cpu_try_die(int cpu)  in __cpu_try_die()  argument
385 	const struct cpu_operations *ops = get_cpu_ops(cpu);  in __cpu_try_die()
388 		ops->cpu_die(cpu);  in __cpu_try_die()
398 	int cpu = smp_processor_id();  in cpu_die_early()  local
400 	pr_crit("CPU%d: will not boot\n", cpu);  in cpu_die_early()
403 	set_cpu_present(cpu, 0);  in cpu_die_early()
404 	rcu_report_dead(cpu);  in cpu_die_early()
408 		__cpu_try_die(cpu);  in cpu_die_early()
470 static bool __init is_mpidr_duplicate(unsigned int cpu, u64 hwid)  in is_mpidr_duplicate()  argument
474 	for (i = 1; (i < cpu) && (i < NR_CPUS); i++)  in is_mpidr_duplicate()
484 static int __init smp_cpu_setup(int cpu)  in smp_cpu_setup()  argument
488 	if (init_cpu_ops(cpu))  in smp_cpu_setup()
491 	ops = get_cpu_ops(cpu);  in smp_cpu_setup()
492 	if (ops->cpu_init(cpu))  in smp_cpu_setup()
495 	set_cpu_possible(cpu, true);  in smp_cpu_setup()
506 struct acpi_madt_generic_interrupt *acpi_cpu_get_madt_gicc(int cpu)  in acpi_cpu_get_madt_gicc()  argument
508 	return &cpu_madt_gicc[cpu];  in acpi_cpu_get_madt_gicc()
718 	unsigned int cpu;  in smp_prepare_cpus()  local
740 	for_each_possible_cpu(cpu) {  in smp_prepare_cpus()
742 		per_cpu(cpu_number, cpu) = cpu;  in smp_prepare_cpus()
744 		if (cpu == smp_processor_id())  in smp_prepare_cpus()
747 		ops = get_cpu_ops(cpu);  in smp_prepare_cpus()
751 		err = ops->cpu_prepare(cpu);  in smp_prepare_cpus()
755 		set_cpu_present(cpu, true);  in smp_prepare_cpus()
756 		numa_store_cpu_info(cpu);  in smp_prepare_cpus()
776 	unsigned int cpu, i;  in arch_show_interrupts()  local
781 		for_each_online_cpu(cpu)  in arch_show_interrupts()
782 			seq_printf(p, "%10u ", irq_desc_kstat_cpu(ipi_desc[i], cpu));  in arch_show_interrupts()
795 void arch_send_call_function_single_ipi(int cpu)  in arch_send_call_function_single_ipi()  argument
797 	smp_cross_call(cpumask_of(cpu), IPI_CALL_FUNC);  in arch_send_call_function_single_ipi()
837 static void __noreturn ipi_cpu_crash_stop(unsigned int cpu, struct pt_regs *regs)  in ipi_cpu_crash_stop()  argument
840 	crash_save_cpu(regs, cpu);  in ipi_cpu_crash_stop()
848 		__cpu_try_die(cpu);  in ipi_cpu_crash_stop()
862 	unsigned int cpu = smp_processor_id();  in do_handle_IPI()  local
882 			ipi_cpu_crash_stop(cpu, get_irq_regs());  in do_handle_IPI()
902 		WARN_ONCE(!acpi_parking_protocol_valid(cpu),  in do_handle_IPI()
904 			  cpu);  in do_handle_IPI()
909 		pr_crit("CPU%u: Unknown IPI message 0x%x\n", cpu, ipinr);  in do_handle_IPI()
929 static void ipi_setup(int cpu)  in ipi_setup()  argument
941 static void ipi_teardown(int cpu)  in ipi_teardown()  argument
977 void arch_smp_send_reschedule(int cpu)  in arch_smp_send_reschedule()  argument
979 	smp_cross_call(cpumask_of(cpu), IPI_RESCHEDULE);  in arch_smp_send_reschedule()