16 #include <linux/cpu.h>
32 void arch_smp_send_reschedule(int cpu)  in arch_smp_send_reschedule()  argument
34 	os_send_ipi(cpu, UML_IPI_RES);  in arch_smp_send_reschedule()
37 void arch_send_call_function_single_ipi(int cpu)  in arch_send_call_function_single_ipi()  argument
39 	os_send_ipi(cpu, UML_IPI_CALL_SINGLE);  in arch_send_call_function_single_ipi()
44 	int cpu;  in arch_send_call_function_ipi_mask()  local
46 	for_each_cpu(cpu, mask)  in arch_send_call_function_ipi_mask()
47 		os_send_ipi(cpu, UML_IPI_CALL);  in arch_send_call_function_ipi_mask()
52 	int cpu, me = smp_processor_id();  in smp_send_stop()  local
54 	for_each_online_cpu(cpu) {  in smp_send_stop()
55 		if (cpu == me)  in smp_send_stop()
57 		os_send_ipi(cpu, UML_IPI_STOP);  in smp_send_stop()
64 	int cpu = raw_smp_processor_id();  in ipi_handler()  local
88 		set_cpu_online(cpu, false);  in ipi_handler()
94 		pr_err("CPU#%d received unknown IPI (vector=%d)!\n", cpu, vector);  in ipi_handler()
111 /* AP states used only during CPU startup */
121 	int err, cpu = raw_smp_processor_id();  in start_secondary()  local
123 	notify_cpu_starting(cpu);  in start_secondary()
124 	set_cpu_online(cpu, true);  in start_secondary()
128 		panic("CPU#%d failed to setup timer, err = %d", cpu, err);  in start_secondary()
139 	int cpu = raw_smp_processor_id();  in uml_start_secondary()  local
143 	stack_protections((unsigned long) &cpu_irqstacks[cpu]);  in uml_start_secondary()
144 	set_sigstack(&cpu_irqstacks[cpu], THREAD_SIZE);  in uml_start_secondary()
146 	set_cpu_present(cpu, true);  in uml_start_secondary()
147 	os_futex_wait(&cpu_states[cpu], UML_CPU_PAUSED);  in uml_start_secondary()
151 	idle = cpu_tasks[cpu];  in uml_start_secondary()
152 	idle->thread_info.cpu = cpu;  in uml_start_secondary()
167 	int err, cpu, me = smp_processor_id();  in smp_prepare_cpus()  local
172 	for_each_possible_cpu(cpu) {  in smp_prepare_cpus()
173 		if (cpu == me)  in smp_prepare_cpus()
176 		pr_debug("Booting processor %d...\n", cpu);  in smp_prepare_cpus()
177 		err = os_start_cpu_thread(cpu);  in smp_prepare_cpus()
179 			pr_crit("CPU#%d failed to start cpu thread, err = %d",  in smp_prepare_cpus()
180 				cpu, err);  in smp_prepare_cpus()
185 		spin_until_cond(cpu_present(cpu) ||  in smp_prepare_cpus()
188 		if (!cpu_present(cpu))  in smp_prepare_cpus()
189 			pr_crit("CPU#%d failed to boot\n", cpu);  in smp_prepare_cpus()
193 int __cpu_up(unsigned int cpu, struct task_struct *tidle)  in __cpu_up()  argument
195 	cpu_tasks[cpu] = tidle;  in __cpu_up()
197 	cpu_states[cpu] = UML_CPU_RUNNING;  in __cpu_up()
198 	os_futex_wake(&cpu_states[cpu]);  in __cpu_up()
199 	spin_until_cond(cpu_online(cpu));  in __cpu_up()
213 	int cpu;  in prefill_possible_map()  local
215 	for (cpu = 0; cpu < uml_ncpus; cpu++)  in prefill_possible_map()
216 		set_cpu_possible(cpu, true);  in prefill_possible_map()
217 	for (; cpu < NR_CPUS; cpu++)  in prefill_possible_map()
218 		set_cpu_possible(cpu, false);  in prefill_possible_map()