89 static void ipi_setup(int cpu);
92 static void ipi_teardown(int cpu);
93 static int op_cpu_kill(unsigned int cpu);
95 static inline int op_cpu_kill(unsigned int cpu)  in op_cpu_kill()  argument
106 static int boot_secondary(unsigned int cpu, struct task_struct *idle)  in boot_secondary()  argument
108 	const struct cpu_operations *ops = get_cpu_ops(cpu);  in boot_secondary()
111 		return ops->cpu_boot(cpu);  in boot_secondary()
118 int __cpu_up(unsigned int cpu, struct task_struct *idle)  in __cpu_up()  argument
131 	ret = boot_secondary(cpu, idle);  in __cpu_up()
133 		pr_err("CPU%u: failed to boot: %d\n", cpu, ret);  in __cpu_up()
143 	if (cpu_online(cpu))  in __cpu_up()
146 	pr_crit("CPU%u: failed to come online\n", cpu);  in __cpu_up()
155 		       cpu, status);  in __cpu_up()
159 		if (!op_cpu_kill(cpu)) {  in __cpu_up()
160 			pr_crit("CPU%u: died during early boot\n", cpu);  in __cpu_up()
163 		pr_crit("CPU%u: may not have shut down cleanly\n", cpu);  in __cpu_up()
166 		pr_crit("CPU%u: is stuck in kernel\n", cpu);  in __cpu_up()
168 			pr_crit("CPU%u: does not support 52-bit VAs\n", cpu);  in __cpu_up()
171 				cpu, PAGE_SIZE / SZ_1K);  in __cpu_up()
176 		panic("CPU%u detected unsupported configuration\n", cpu);  in __cpu_up()
206 	unsigned int cpu = smp_processor_id();  in secondary_start_kernel()  local
224 	rcu_cpu_starting(cpu);  in secondary_start_kernel()
234 	ops = get_cpu_ops(cpu);  in secondary_start_kernel()
242 	store_cpu_topology(cpu);  in secondary_start_kernel()
247 	notify_cpu_starting(cpu);  in secondary_start_kernel()
249 	ipi_setup(cpu);  in secondary_start_kernel()
251 	numa_add_cpu(cpu);  in secondary_start_kernel()
259 					 cpu, (unsigned long)mpidr,  in secondary_start_kernel()
262 	set_cpu_online(cpu, true);  in secondary_start_kernel()
274 static int op_cpu_disable(unsigned int cpu)  in op_cpu_disable()  argument
276 	const struct cpu_operations *ops = get_cpu_ops(cpu);  in op_cpu_disable()
290 		return ops->cpu_disable(cpu);  in op_cpu_disable()
300 	unsigned int cpu = smp_processor_id();  in __cpu_disable()  local
303 	ret = op_cpu_disable(cpu);  in __cpu_disable()
307 	remove_cpu_topology(cpu);  in __cpu_disable()
308 	numa_remove_cpu(cpu);  in __cpu_disable()
314 	set_cpu_online(cpu, false);  in __cpu_disable()
315 	ipi_teardown(cpu);  in __cpu_disable()
325 static int op_cpu_kill(unsigned int cpu)  in op_cpu_kill()  argument
327 	const struct cpu_operations *ops = get_cpu_ops(cpu);  in op_cpu_kill()
337 	return ops->cpu_kill(cpu);  in op_cpu_kill()
344 void __cpu_die(unsigned int cpu)  in __cpu_die()  argument
348 	if (!cpu_wait_death(cpu, 5)) {  in __cpu_die()
349 		pr_crit("CPU%u: cpu didn't die\n", cpu);  in __cpu_die()
352 	pr_debug("CPU%u: shutdown\n", cpu);  in __cpu_die()
360 	err = op_cpu_kill(cpu);  in __cpu_die()
362 		pr_warn("CPU%d may not have shut down cleanly: %d\n", cpu, err);  in __cpu_die()
371 	unsigned int cpu = smp_processor_id();  in cpu_die()  local
372 	const struct cpu_operations *ops = get_cpu_ops(cpu);  in cpu_die()
386 	ops->cpu_die(cpu);  in cpu_die()
392 static void __cpu_try_die(int cpu)  in __cpu_try_die()  argument
395 	const struct cpu_operations *ops = get_cpu_ops(cpu);  in __cpu_try_die()
398 		ops->cpu_die(cpu);  in __cpu_try_die()
408 	int cpu = smp_processor_id();  in cpu_die_early()  local
410 	pr_crit("CPU%d: will not boot\n", cpu);  in cpu_die_early()
413 	set_cpu_present(cpu, 0);  in cpu_die_early()
414 	rcu_report_dead(cpu);  in cpu_die_early()
418 		__cpu_try_die(cpu);  in cpu_die_early()
507 static bool __init is_mpidr_duplicate(unsigned int cpu, u64 hwid)  in is_mpidr_duplicate()  argument
511 	for (i = 1; (i < cpu) && (i < NR_CPUS); i++)  in is_mpidr_duplicate()
521 static int __init smp_cpu_setup(int cpu)  in smp_cpu_setup()  argument
525 	if (init_cpu_ops(cpu))  in smp_cpu_setup()
528 	ops = get_cpu_ops(cpu);  in smp_cpu_setup()
529 	if (ops->cpu_init(cpu))  in smp_cpu_setup()
532 	set_cpu_possible(cpu, true);  in smp_cpu_setup()
543 struct acpi_madt_generic_interrupt *acpi_cpu_get_madt_gicc(int cpu)  in acpi_cpu_get_madt_gicc()  argument
545 	return &cpu_madt_gicc[cpu];  in acpi_cpu_get_madt_gicc()
754 	unsigned int cpu;  in smp_prepare_cpus()  local
776 	for_each_possible_cpu(cpu) {  in smp_prepare_cpus()
778 		per_cpu(cpu_number, cpu) = cpu;  in smp_prepare_cpus()
780 		if (cpu == smp_processor_id())  in smp_prepare_cpus()
783 		ops = get_cpu_ops(cpu);  in smp_prepare_cpus()
787 		err = ops->cpu_prepare(cpu);  in smp_prepare_cpus()
791 		set_cpu_present(cpu, true);  in smp_prepare_cpus()
792 		numa_store_cpu_info(cpu);  in smp_prepare_cpus()
812 	unsigned int cpu, i;  in arch_show_interrupts()  local
817 		for_each_online_cpu(cpu)  in arch_show_interrupts()
818 			seq_printf(p, "%10u ", irq_desc_kstat_cpu(ipi_desc[i], cpu));  in arch_show_interrupts()
831 void arch_send_call_function_single_ipi(int cpu)  in arch_send_call_function_single_ipi()  argument
833 	smp_cross_call(cpumask_of(cpu), IPI_CALL_FUNC);  in arch_send_call_function_single_ipi()
873 static void ipi_cpu_crash_stop(unsigned int cpu, struct pt_regs *regs)  in ipi_cpu_crash_stop()  argument
876 	crash_save_cpu(regs, cpu);  in ipi_cpu_crash_stop()
884 		__cpu_try_die(cpu);  in ipi_cpu_crash_stop()
896 	unsigned int cpu = smp_processor_id();  in do_handle_IPI()  local
917 			ipi_cpu_crash_stop(cpu, get_irq_regs());  in do_handle_IPI()
937 		WARN_ONCE(!acpi_parking_protocol_valid(cpu),  in do_handle_IPI()
939 			  cpu);  in do_handle_IPI()
944 		pr_crit("CPU%u: Unknown IPI message 0x%x\n", cpu, ipinr);  in do_handle_IPI()
964 static void ipi_setup(int cpu)  in ipi_setup()  argument
976 static void ipi_teardown(int cpu)  in ipi_teardown()  argument
1017 void smp_send_reschedule(int cpu)  in smp_send_reschedule()  argument
1019 	smp_cross_call(cpumask_of(cpu), IPI_RESCHEDULE);  in smp_send_reschedule()