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()
872 	 * startup in cpuhp_online_idle() which allows to avoid  in bringup_cpu()
1046  * Execute teardown/startup callbacks on the plugged cpu. Also used to invoke
1836  * sends the startup IPI to the APs. The APs proceed through the low level
1840  * This avoids waiting for each AP to respond to the startup IPI in
2061 		.startup.single		= NULL,
2067 		.startup.single		= smpboot_create_threads,
2073 		.startup.single		= perf_event_init_cpu,
2078 		.startup.single		= random_prepare_cpu,
2083 		.startup.single		= workqueue_prepare_cpu,
2088 		.startup.single		= hrtimers_prepare_cpu,
2093 		.startup.single		= smpcfd_prepare_cpu,
2098 		.startup.single		= relay_prepare_cpu,
2103 		.startup.single		= rcutree_prepare_cpu,
2113 		.startup.single		= timers_prepare_cpu,
2124 		.startup.single		= cpuhp_kick_ap_alive,
2133 		.startup.single		= cpuhp_bringup_ap,
2143 		.startup.single		= bringup_cpu,
2163 		.startup.single		= sched_cpu_starting,
2168 		.startup.single		= NULL,
2173 		.startup.single		= NULL,
2178 		.startup.single		= hrtimers_cpu_starting,
2183 		.startup.single		= NULL,
2197 		.startup.single		= NULL,
2204 		.startup.single		= NULL,
2211 		.startup.single		= smpboot_unpark_threads,
2216 		.startup.single		= irq_affinity_online_cpu,
2221 		.startup.single		= perf_event_init_cpu,
2226 		.startup.single		= lockup_detector_online_cpu,
2231 		.startup.single		= workqueue_online_cpu,
2236 		.startup.single		= random_online_cpu,
2241 		.startup.single		= rcutree_online_cpu,
2253 		.startup.single		= sched_cpu_activate,
2261 		.startup.single		= NULL,
2306 				 int (*startup)(unsigned int cpu),  in cpuhp_store_callbacks()
2334 	sp->startup.single = startup;  in cpuhp_store_callbacks()
2348  * Call the startup/teardown function for a step either on the AP or
2397 		/* Did we invoke the startup call on that cpu ? */  in cpuhp_rollback_install()
2419 	if (!invoke || !sp->startup.multi)  in __cpuhp_state_add_instance_cpuslocked()
2423 	 * Try to call the startup callback for each present cpu  in __cpuhp_state_add_instance_cpuslocked()
2464  * @invoke:		If true, the startup function is invoked for cpus where
2466  * @startup:		startup callback function
2480 				   int (*startup)(unsigned int cpu),  in __cpuhp_setup_state_cpuslocked()
2494 	ret = cpuhp_store_callbacks(state, name, startup, teardown,  in __cpuhp_setup_state_cpuslocked()
2503 	if (ret || !invoke || !startup)  in __cpuhp_setup_state_cpuslocked()
2507 	 * Try to call the startup callback for each present cpu  in __cpuhp_setup_state_cpuslocked()
2539 			int (*startup)(unsigned int cpu),  in __cpuhp_setup_state()
2546 	ret = __cpuhp_setup_state_cpuslocked(state, name, invoke, startup,  in __cpuhp_setup_state()
2834 	if (!sp->startup.single && !sp->teardown.single)  in fail_store()