76 struct pcpu {  struct
85 static struct pcpu pcpu_devices[NR_CPUS];  argument
135 static int pcpu_sigp_retry(struct pcpu *pcpu, u8 order, u32 parm)  in pcpu_sigp_retry()  argument
140 		cc = __pcpu_sigp(pcpu->address, order, parm, NULL);  in pcpu_sigp_retry()
149 static inline int pcpu_stopped(struct pcpu *pcpu)  in pcpu_stopped()  argument
153 	if (__pcpu_sigp(pcpu->address, SIGP_SENSE,  in pcpu_stopped()
159 static inline int pcpu_running(struct pcpu *pcpu)  in pcpu_running()  argument
161 	if (__pcpu_sigp(pcpu->address, SIGP_SENSE_RUNNING,  in pcpu_running()
171 static struct pcpu *pcpu_find_address(const struct cpumask *mask, u16 address)  in pcpu_find_address()
181 static void pcpu_ec_call(struct pcpu *pcpu, int ec_bit)  in pcpu_ec_call()  argument
185 	if (test_and_set_bit(ec_bit, &pcpu->ec_mask))  in pcpu_ec_call()
187 	order = pcpu_running(pcpu) ? SIGP_EXTERNAL_CALL : SIGP_EMERGENCY_SIGNAL;  in pcpu_ec_call()
188 	pcpu->ec_clk = get_tod_clock_fast();  in pcpu_ec_call()
189 	pcpu_sigp_retry(pcpu, order, 0);  in pcpu_ec_call()
192 static int pcpu_alloc_lowcore(struct pcpu *pcpu, int cpu)  in pcpu_alloc_lowcore()  argument
219 	pcpu_sigp_retry(pcpu, SIGP_SET_PREFIX, __pa(lc));  in pcpu_alloc_lowcore()
232 static void pcpu_free_lowcore(struct pcpu *pcpu)  in pcpu_free_lowcore()  argument
238 	cpu = pcpu - pcpu_devices;  in pcpu_free_lowcore()
243 	pcpu_sigp_retry(pcpu, SIGP_SET_PREFIX, 0);  in pcpu_free_lowcore()
253 static void pcpu_prepare_secondary(struct pcpu *pcpu, int cpu)  in pcpu_prepare_secondary()  argument
276 static void pcpu_attach_task(struct pcpu *pcpu, struct task_struct *tsk)  in pcpu_attach_task()  argument
281 	cpu = pcpu - pcpu_devices;  in pcpu_attach_task()
296 static void pcpu_start_fn(struct pcpu *pcpu, void (*func)(void *), void *data)  in pcpu_start_fn()  argument
301 	cpu = pcpu - pcpu_devices;  in pcpu_start_fn()
307 	pcpu_sigp_retry(pcpu, SIGP_RESTART, 0);  in pcpu_start_fn()
320 static void pcpu_delegate(struct pcpu *pcpu,  in pcpu_delegate()  argument
328 	lc = lowcore_ptr[pcpu - pcpu_devices];  in pcpu_delegate()
331 	if (pcpu->address == source_cpu) {  in pcpu_delegate()
336 	pcpu_sigp_retry(pcpu, SIGP_STOP, 0);  in pcpu_delegate()
357 		: : "d" (pcpu->address), "d" (source_cpu),  in pcpu_delegate()
388 	struct pcpu *pcpu;  in smp_call_online_cpu()  local
391 	pcpu = pcpu_find_address(cpu_online_mask, stap());  in smp_call_online_cpu()
392 	if (!pcpu)  in smp_call_online_cpu()
394 		pcpu = pcpu_devices + cpumask_first(cpu_online_mask);  in smp_call_online_cpu()
395 	pcpu_delegate(pcpu, func, data, (unsigned long) restart_stack);  in smp_call_online_cpu()
464 		struct pcpu *pcpu = pcpu_devices + cpu;  in smp_emergency_stop()  local
465 		set_bit(ec_stop_cpu, &pcpu->ec_mask);  in smp_emergency_stop()
466 		while (__pcpu_sigp(pcpu->address, SIGP_EMERGENCY_SIGNAL,  in smp_emergency_stop()
622 	struct pcpu *pcpu;  in smp_store_status()  local
625 	pcpu = pcpu_devices + cpu;  in smp_store_status()
628 	if (__pcpu_sigp_relax(pcpu->address, SIGP_STORE_STATUS_AT_ADDRESS,  in smp_store_status()
636 	if (__pcpu_sigp_relax(pcpu->address, SIGP_STORE_ADDITIONAL_STATUS,  in smp_store_status()
772 	struct pcpu *pcpu;  in smp_add_core()  local
784 		pcpu = pcpu_devices + cpu;  in smp_add_core()
785 		pcpu->address = address + i;  in smp_add_core()
787 			pcpu->state = CPU_STATE_CONFIGURED;  in smp_add_core()
789 			pcpu->state = CPU_STATE_STANDBY;  in smp_add_core()
921 	struct pcpu *pcpu = pcpu_devices + cpu;  in __cpu_up()  local
924 	if (pcpu->state != CPU_STATE_CONFIGURED)  in __cpu_up()
926 	if (pcpu_sigp_retry(pcpu, SIGP_INITIAL_CPU_RESET, 0) !=  in __cpu_up()
930 	rc = pcpu_alloc_lowcore(pcpu, cpu);  in __cpu_up()
933 	pcpu_prepare_secondary(pcpu, cpu);  in __cpu_up()
934 	pcpu_attach_task(pcpu, tidle);  in __cpu_up()
935 	pcpu_start_fn(pcpu, smp_start_secondary, NULL);  in __cpu_up()
976 	struct pcpu *pcpu;  in __cpu_die()  local
979 	pcpu = pcpu_devices + cpu;  in __cpu_die()
980 	while (!pcpu_stopped(pcpu))  in __cpu_die()
982 	pcpu_free_lowcore(pcpu);  in __cpu_die()
1020 	struct pcpu *pcpu = pcpu_devices;  in smp_prepare_boot_cpu()  local
1023 	pcpu->state = CPU_STATE_CONFIGURED;  in smp_prepare_boot_cpu()
1062 	struct pcpu *pcpu;  in cpu_configure_store()  local
1081 	pcpu = pcpu_devices + cpu;  in cpu_configure_store()
1085 		if (pcpu->state != CPU_STATE_CONFIGURED)  in cpu_configure_store()
1087 		rc = sclp_core_deconfigure(pcpu->address >> smp_cpu_mt_shift);  in cpu_configure_store()
1093 			pcpu[i].state = CPU_STATE_STANDBY;  in cpu_configure_store()
1100 		if (pcpu->state != CPU_STATE_STANDBY)  in cpu_configure_store()
1102 		rc = sclp_core_configure(pcpu->address >> smp_cpu_mt_shift);  in cpu_configure_store()
1108 			pcpu[i].state = CPU_STATE_CONFIGURED;  in cpu_configure_store()