120  * @startup:	Startup function of the step
131 	} startup;  member
154 	return bringup ? !step->startup.single : !step->teardown.single;  in cpuhp_step_empty()
191 		cb = bringup ? step->startup.single : step->teardown.single;  in cpuhp_invoke_callback()
198 	cbm = bringup ? step->startup.multi : step->teardown.multi;  in cpuhp_invoke_callback()
232 	cbm = !bringup ? step->startup.multi : step->teardown.multi;  in cpuhp_invoke_callback()
873 	 * startup in cpuhp_online_idle() which allows to avoid  in bringup_cpu()
1047  * Execute teardown/startup callbacks on the plugged cpu. Also used to invoke
1837  * sends the startup IPI to the APs. The APs proceed through the low level
1841  * This avoids waiting for each AP to respond to the startup IPI in
2062 		.startup.single		= NULL,
2068 		.startup.single		= smpboot_create_threads,
2074 		.startup.single		= perf_event_init_cpu,
2079 		.startup.single		= random_prepare_cpu,
2084 		.startup.single		= workqueue_prepare_cpu,
2089 		.startup.single		= hrtimers_prepare_cpu,
2094 		.startup.single		= smpcfd_prepare_cpu,
2099 		.startup.single		= relay_prepare_cpu,
2104 		.startup.single		= rcutree_prepare_cpu,
2114 		.startup.single		= timers_prepare_cpu,
2125 		.startup.single		= cpuhp_kick_ap_alive,
2134 		.startup.single		= cpuhp_bringup_ap,
2144 		.startup.single		= bringup_cpu,
2164 		.startup.single		= sched_cpu_starting,
2169 		.startup.single		= NULL,
2174 		.startup.single		= NULL,
2179 		.startup.single		= hrtimers_cpu_starting,
2184 		.startup.single		= NULL,
2198 		.startup.single		= NULL,
2205 		.startup.single		= NULL,
2212 		.startup.single		= smpboot_unpark_threads,
2217 		.startup.single		= irq_affinity_online_cpu,
2222 		.startup.single		= perf_event_init_cpu,
2227 		.startup.single		= lockup_detector_online_cpu,
2232 		.startup.single		= workqueue_online_cpu,
2237 		.startup.single		= random_online_cpu,
2242 		.startup.single		= rcutree_online_cpu,
2254 		.startup.single		= sched_cpu_activate,
2262 		.startup.single		= NULL,
2307 				 int (*startup)(unsigned int cpu),  in cpuhp_store_callbacks()
2335 	sp->startup.single = startup;  in cpuhp_store_callbacks()
2349  * Call the startup/teardown function for a step either on the AP or
2398 		/* Did we invoke the startup call on that cpu ? */  in cpuhp_rollback_install()
2420 	if (!invoke || !sp->startup.multi)  in __cpuhp_state_add_instance_cpuslocked()
2424 	 * Try to call the startup callback for each present cpu  in __cpuhp_state_add_instance_cpuslocked()
2465  * @invoke:		If true, the startup function is invoked for cpus where
2467  * @startup:		startup callback function
2481 				   int (*startup)(unsigned int cpu),  in __cpuhp_setup_state_cpuslocked()
2495 	ret = cpuhp_store_callbacks(state, name, startup, teardown,  in __cpuhp_setup_state_cpuslocked()
2504 	if (ret || !invoke || !startup)  in __cpuhp_setup_state_cpuslocked()
2508 	 * Try to call the startup callback for each present cpu  in __cpuhp_setup_state_cpuslocked()
2540 			int (*startup)(unsigned int cpu),  in __cpuhp_setup_state()
2547 	ret = __cpuhp_setup_state_cpuslocked(state, name, invoke, startup,  in __cpuhp_setup_state()
2835 	if (!sp->startup.single && !sp->teardown.single)  in fail_store()