61 	bool			single;  member
110 		int		(*single)(unsigned int cpu);  member
115 		int		(*single)(unsigned int cpu);  member
155 		if (!(bringup ? step->startup.single : step->teardown.single))  in cpuhp_invoke_callback()
163 		cb = bringup ? step->startup.single : step->teardown.single;  in cpuhp_invoke_callback()
437 	st->single = false;  in cpuhp_set_state()
466 	if (!st->single && st->state == st->target)  in __cpuhp_kick_ap()
621 	if (st->single) {  in cpuhp_thread_fun()
699 	st->single = true;  in cpuhp_invoke_ap_callback()
1308 		.startup.single		= NULL,
1309 		.teardown.single	= NULL,
1314 		.startup.single		= smpboot_create_threads,
1315 		.teardown.single	= NULL,
1320 		.startup.single		= perf_event_init_cpu,
1321 		.teardown.single	= perf_event_exit_cpu,
1325 		.startup.single		= workqueue_prepare_cpu,
1326 		.teardown.single	= NULL,
1330 		.startup.single		= hrtimers_prepare_cpu,
1331 		.teardown.single	= hrtimers_dead_cpu,
1335 		.startup.single		= smpcfd_prepare_cpu,
1336 		.teardown.single	= smpcfd_dead_cpu,
1340 		.startup.single		= relay_prepare_cpu,
1341 		.teardown.single	= NULL,
1345 		.startup.single		= slab_prepare_cpu,
1346 		.teardown.single	= slab_dead_cpu,
1350 		.startup.single		= rcutree_prepare_cpu,
1351 		.teardown.single	= rcutree_dead_cpu,
1360 		.startup.single		= timers_prepare_cpu,
1361 		.teardown.single	= timers_dead_cpu,
1366 		.startup.single		= bringup_cpu,
1367 		.teardown.single	= NULL,
1385 		.startup.single		= sched_cpu_starting,
1386 		.teardown.single	= sched_cpu_dying,
1390 		.startup.single		= NULL,
1391 		.teardown.single	= rcutree_dying_cpu,
1395 		.startup.single		= NULL,
1396 		.teardown.single	= smpcfd_dying_cpu,
1409 		.startup.single		= NULL,
1410 		.teardown.single	= takedown_cpu,
1416 		.startup.single		= smpboot_unpark_threads,
1417 		.teardown.single	= smpboot_park_threads,
1421 		.startup.single		= irq_affinity_online_cpu,
1422 		.teardown.single	= NULL,
1426 		.startup.single		= perf_event_init_cpu,
1427 		.teardown.single	= perf_event_exit_cpu,
1431 		.startup.single		= lockup_detector_online_cpu,
1432 		.teardown.single	= lockup_detector_offline_cpu,
1436 		.startup.single		= workqueue_online_cpu,
1437 		.teardown.single	= workqueue_offline_cpu,
1441 		.startup.single		= rcutree_online_cpu,
1442 		.teardown.single	= rcutree_offline_cpu,
1453 		.startup.single		= sched_cpu_activate,
1454 		.teardown.single	= sched_cpu_deactivate,
1461 		.startup.single		= NULL,
1462 		.teardown.single	= NULL,
1534 	sp->startup.single = startup;  in cpuhp_store_callbacks()
1535 	sp->teardown.single = teardown;  in cpuhp_store_callbacks()
1544 	return cpuhp_get_step(state)->teardown.single;  in cpuhp_get_teardown_cb()
1561 	if ((bringup && !sp->startup.single) ||  in cpuhp_issue_call()
1562 	    (!bringup && !sp->teardown.single))  in cpuhp_issue_call()
1930 	if (!sp->startup.single && !sp->teardown.single)  in write_cpuhp_fail()