63 	bool			single;  member
115 		int		(*single)(unsigned int cpu);  member
120 		int		(*single)(unsigned int cpu);  member
160 		if (!(bringup ? step->startup.single : step->teardown.single))  in cpuhp_invoke_callback()
168 		cb = bringup ? step->startup.single : step->teardown.single;  in cpuhp_invoke_callback()
461 	st->single = false;  in cpuhp_set_state()
490 	if (!st->single && st->state == st->target)  in __cpuhp_kick_ap()
667 	if (st->single) {  in cpuhp_thread_fun()
746 	st->single = true;  in cpuhp_invoke_ap_callback()
1380 		.startup.single		= NULL,
1381 		.teardown.single	= NULL,
1386 		.startup.single		= smpboot_create_threads,
1387 		.teardown.single	= NULL,
1392 		.startup.single		= perf_event_init_cpu,
1393 		.teardown.single	= perf_event_exit_cpu,
1397 		.startup.single		= workqueue_prepare_cpu,
1398 		.teardown.single	= NULL,
1402 		.startup.single		= hrtimers_prepare_cpu,
1403 		.teardown.single	= hrtimers_dead_cpu,
1407 		.startup.single		= smpcfd_prepare_cpu,
1408 		.teardown.single	= smpcfd_dead_cpu,
1412 		.startup.single		= relay_prepare_cpu,
1413 		.teardown.single	= NULL,
1417 		.startup.single		= slab_prepare_cpu,
1418 		.teardown.single	= slab_dead_cpu,
1422 		.startup.single		= rcutree_prepare_cpu,
1423 		.teardown.single	= rcutree_dead_cpu,
1432 		.startup.single		= timers_prepare_cpu,
1433 		.teardown.single	= timers_dead_cpu,
1438 		.startup.single		= bringup_cpu,
1439 		.teardown.single	= NULL,
1457 		.startup.single		= sched_cpu_starting,
1458 		.teardown.single	= sched_cpu_dying,
1462 		.startup.single		= NULL,
1463 		.teardown.single	= rcutree_dying_cpu,
1467 		.startup.single		= NULL,
1468 		.teardown.single	= smpcfd_dying_cpu,
1481 		.startup.single		= NULL,
1482 		.teardown.single	= takedown_cpu,
1488 		.startup.single		= smpboot_unpark_threads,
1489 		.teardown.single	= smpboot_park_threads,
1493 		.startup.single		= irq_affinity_online_cpu,
1494 		.teardown.single	= NULL,
1498 		.startup.single		= perf_event_init_cpu,
1499 		.teardown.single	= perf_event_exit_cpu,
1503 		.startup.single		= lockup_detector_online_cpu,
1504 		.teardown.single	= lockup_detector_offline_cpu,
1508 		.startup.single		= workqueue_online_cpu,
1509 		.teardown.single	= workqueue_offline_cpu,
1513 		.startup.single		= rcutree_online_cpu,
1514 		.teardown.single	= rcutree_offline_cpu,
1525 		.startup.single		= sched_cpu_activate,
1526 		.teardown.single	= sched_cpu_deactivate,
1533 		.startup.single		= NULL,
1534 		.teardown.single	= NULL,
1606 	sp->startup.single = startup;  in cpuhp_store_callbacks()
1607 	sp->teardown.single = teardown;  in cpuhp_store_callbacks()
1616 	return cpuhp_get_step(state)->teardown.single;  in cpuhp_get_teardown_cb()
1633 	if ((bringup && !sp->startup.single) ||  in cpuhp_issue_call()
1634 	    (!bringup && !sp->teardown.single))  in cpuhp_issue_call()
2077 	if (!sp->startup.single && !sp->teardown.single)  in write_cpuhp_fail()