84 static void ipi_setup(int cpu);
87 static void ipi_teardown(int cpu);
88 static int op_cpu_kill(unsigned int cpu);
90 static inline int op_cpu_kill(unsigned int cpu)  in op_cpu_kill()  argument
101 static int boot_secondary(unsigned int cpu, struct task_struct *idle)  in boot_secondary()  argument
103 	const struct cpu_operations *ops = get_cpu_ops(cpu);  in boot_secondary()
106 		return ops->cpu_boot(cpu);  in boot_secondary()
113 int __cpu_up(unsigned int cpu, struct task_struct *idle)  in __cpu_up()  argument
126 	ret = boot_secondary(cpu, idle);  in __cpu_up()
128 		pr_err("CPU%u: failed to boot: %d\n", cpu, ret);  in __cpu_up()
138 	if (cpu_online(cpu))  in __cpu_up()
141 	pr_crit("CPU%u: failed to come online\n", cpu);  in __cpu_up()
150 		       cpu, status);  in __cpu_up()
154 		if (!op_cpu_kill(cpu)) {  in __cpu_up()
155 			pr_crit("CPU%u: died during early boot\n", cpu);  in __cpu_up()
158 		pr_crit("CPU%u: may not have shut down cleanly\n", cpu);  in __cpu_up()
161 		pr_crit("CPU%u: is stuck in kernel\n", cpu);  in __cpu_up()
163 			pr_crit("CPU%u: does not support 52-bit VAs\n", cpu);  in __cpu_up()
166 				cpu, PAGE_SIZE / SZ_1K);  in __cpu_up()
171 		panic("CPU%u detected unsupported configuration\n", cpu);  in __cpu_up()
201 	unsigned int cpu = smp_processor_id();  in secondary_start_kernel()  local
219 	rcu_cpu_starting(cpu);  in secondary_start_kernel()
229 	ops = get_cpu_ops(cpu);  in secondary_start_kernel()
237 	store_cpu_topology(cpu);  in secondary_start_kernel()
242 	notify_cpu_starting(cpu);  in secondary_start_kernel()
244 	ipi_setup(cpu);  in secondary_start_kernel()
246 	numa_add_cpu(cpu);  in secondary_start_kernel()
254 					 cpu, (unsigned long)mpidr,  in secondary_start_kernel()
257 	set_cpu_online(cpu, true);  in secondary_start_kernel()
269 static int op_cpu_disable(unsigned int cpu)  in op_cpu_disable()  argument
271 	const struct cpu_operations *ops = get_cpu_ops(cpu);  in op_cpu_disable()
285 		return ops->cpu_disable(cpu);  in op_cpu_disable()
295 	unsigned int cpu = smp_processor_id();  in __cpu_disable()  local
298 	ret = op_cpu_disable(cpu);  in __cpu_disable()
302 	remove_cpu_topology(cpu);  in __cpu_disable()
303 	numa_remove_cpu(cpu);  in __cpu_disable()
309 	set_cpu_online(cpu, false);  in __cpu_disable()
310 	ipi_teardown(cpu);  in __cpu_disable()
320 static int op_cpu_kill(unsigned int cpu)  in op_cpu_kill()  argument
322 	const struct cpu_operations *ops = get_cpu_ops(cpu);  in op_cpu_kill()
332 	return ops->cpu_kill(cpu);  in op_cpu_kill()
339 void __cpu_die(unsigned int cpu)  in __cpu_die()  argument
343 	if (!cpu_wait_death(cpu, 5)) {  in __cpu_die()
344 		pr_crit("CPU%u: cpu didn't die\n", cpu);  in __cpu_die()
347 	pr_debug("CPU%u: shutdown\n", cpu);  in __cpu_die()
355 	err = op_cpu_kill(cpu);  in __cpu_die()
357 		pr_warn("CPU%d may not have shut down cleanly: %d\n", cpu, err);  in __cpu_die()
366 	unsigned int cpu = smp_processor_id();  in cpu_die()  local
367 	const struct cpu_operations *ops = get_cpu_ops(cpu);  in cpu_die()
381 	ops->cpu_die(cpu);  in cpu_die()
387 static void __cpu_try_die(int cpu)  in __cpu_try_die()  argument
390 	const struct cpu_operations *ops = get_cpu_ops(cpu);  in __cpu_try_die()
393 		ops->cpu_die(cpu);  in __cpu_try_die()
403 	int cpu = smp_processor_id();  in cpu_die_early()  local
405 	pr_crit("CPU%d: will not boot\n", cpu);  in cpu_die_early()
408 	set_cpu_present(cpu, 0);  in cpu_die_early()
409 	rcu_report_dead(cpu);  in cpu_die_early()
413 		__cpu_try_die(cpu);  in cpu_die_early()
475 static bool __init is_mpidr_duplicate(unsigned int cpu, u64 hwid)  in is_mpidr_duplicate()  argument
479 	for (i = 1; (i < cpu) && (i < NR_CPUS); i++)  in is_mpidr_duplicate()
489 static int __init smp_cpu_setup(int cpu)  in smp_cpu_setup()  argument
493 	if (init_cpu_ops(cpu))  in smp_cpu_setup()
496 	ops = get_cpu_ops(cpu);  in smp_cpu_setup()
497 	if (ops->cpu_init(cpu))  in smp_cpu_setup()
500 	set_cpu_possible(cpu, true);  in smp_cpu_setup()
511 struct acpi_madt_generic_interrupt *acpi_cpu_get_madt_gicc(int cpu)  in acpi_cpu_get_madt_gicc()  argument
513 	return &cpu_madt_gicc[cpu];  in acpi_cpu_get_madt_gicc()
723 	unsigned int cpu;  in smp_prepare_cpus()  local
745 	for_each_possible_cpu(cpu) {  in smp_prepare_cpus()
747 		per_cpu(cpu_number, cpu) = cpu;  in smp_prepare_cpus()
749 		if (cpu == smp_processor_id())  in smp_prepare_cpus()
752 		ops = get_cpu_ops(cpu);  in smp_prepare_cpus()
756 		err = ops->cpu_prepare(cpu);  in smp_prepare_cpus()
760 		set_cpu_present(cpu, true);  in smp_prepare_cpus()
761 		numa_store_cpu_info(cpu);  in smp_prepare_cpus()
781 	unsigned int cpu, i;  in arch_show_interrupts()  local
786 		for_each_online_cpu(cpu)  in arch_show_interrupts()
787 			seq_printf(p, "%10u ", irq_desc_kstat_cpu(ipi_desc[i], cpu));  in arch_show_interrupts()
800 void arch_send_call_function_single_ipi(int cpu)  in arch_send_call_function_single_ipi()  argument
802 	smp_cross_call(cpumask_of(cpu), IPI_CALL_FUNC);  in arch_send_call_function_single_ipi()
842 static void ipi_cpu_crash_stop(unsigned int cpu, struct pt_regs *regs)  in ipi_cpu_crash_stop()  argument
845 	crash_save_cpu(regs, cpu);  in ipi_cpu_crash_stop()
853 		__cpu_try_die(cpu);  in ipi_cpu_crash_stop()
865 	unsigned int cpu = smp_processor_id();  in do_handle_IPI()  local
885 			ipi_cpu_crash_stop(cpu, get_irq_regs());  in do_handle_IPI()
905 		WARN_ONCE(!acpi_parking_protocol_valid(cpu),  in do_handle_IPI()
907 			  cpu);  in do_handle_IPI()
912 		pr_crit("CPU%u: Unknown IPI message 0x%x\n", cpu, ipinr);  in do_handle_IPI()
932 static void ipi_setup(int cpu)  in ipi_setup()  argument
944 static void ipi_teardown(int cpu)  in ipi_teardown()  argument
980 void smp_send_reschedule(int cpu)  in smp_send_reschedule()  argument
982 	smp_cross_call(cpumask_of(cpu), IPI_RESCHEDULE);  in smp_send_reschedule()