73 	bool			single;  member
125 		int		(*single)(unsigned int cpu);  member
130 		int		(*single)(unsigned int cpu);  member
170 		if (!(bringup ? step->startup.single : step->teardown.single))  in cpuhp_invoke_callback()
178 		cb = bringup ? step->startup.single : step->teardown.single;  in cpuhp_invoke_callback()
473 	st->single = false;  in cpuhp_set_state()
502 	if (!st->single && st->state == st->target)  in __cpuhp_kick_ap()
699 	if (st->single) {  in cpuhp_thread_fun()
778 	st->single = true;  in cpuhp_invoke_ap_callback()
1886 		.startup.single		= NULL,
1887 		.teardown.single	= NULL,
1892 		.startup.single		= smpboot_create_threads,
1893 		.teardown.single	= NULL,
1898 		.startup.single		= random_and_perf_prepare_fusion,
1899 		.teardown.single	= perf_event_exit_cpu,
1903 		.startup.single		= workqueue_prepare_cpu,
1904 		.teardown.single	= NULL,
1908 		.startup.single		= hrtimers_prepare_cpu,
1909 		.teardown.single	= hrtimers_dead_cpu,
1913 		.startup.single		= smpcfd_prepare_cpu,
1914 		.teardown.single	= smpcfd_dead_cpu,
1918 		.startup.single		= relay_prepare_cpu,
1919 		.teardown.single	= NULL,
1923 		.startup.single		= slab_prepare_cpu,
1924 		.teardown.single	= slab_dead_cpu,
1928 		.startup.single		= rcutree_prepare_cpu,
1929 		.teardown.single	= rcutree_dead_cpu,
1938 		.startup.single		= timers_prepare_cpu,
1939 		.teardown.single	= timers_dead_cpu,
1944 		.startup.single		= bringup_cpu,
1945 		.teardown.single	= finish_cpu,
1963 		.startup.single		= sched_cpu_starting,
1964 		.teardown.single	= sched_cpu_dying,
1968 		.startup.single		= NULL,
1969 		.teardown.single	= rcutree_dying_cpu,
1973 		.startup.single		= NULL,
1974 		.teardown.single	= smpcfd_dying_cpu,
1987 		.startup.single		= NULL,
1988 		.teardown.single	= takedown_cpu,
1994 		.startup.single		= smpboot_unpark_threads,
1995 		.teardown.single	= smpboot_park_threads,
1999 		.startup.single		= irq_affinity_online_cpu,
2000 		.teardown.single	= NULL,
2004 		.startup.single		= perf_event_init_cpu,
2005 		.teardown.single	= perf_event_exit_cpu,
2009 		.startup.single		= lockup_detector_online_cpu,
2010 		.teardown.single	= lockup_detector_offline_cpu,
2014 		.startup.single		= random_and_workqueue_online_fusion,
2015 		.teardown.single	= workqueue_offline_cpu,
2019 		.startup.single		= rcutree_online_cpu,
2020 		.teardown.single	= rcutree_offline_cpu,
2031 		.startup.single		= sched_cpu_activate,
2032 		.teardown.single	= sched_cpu_deactivate,
2039 		.startup.single		= NULL,
2040 		.teardown.single	= NULL,
2112 	sp->startup.single = startup;  in cpuhp_store_callbacks()
2113 	sp->teardown.single = teardown;  in cpuhp_store_callbacks()
2122 	return cpuhp_get_step(state)->teardown.single;  in cpuhp_get_teardown_cb()
2139 	if ((bringup && !sp->startup.single) ||  in cpuhp_issue_call()
2140 	    (!bringup && !sp->teardown.single))  in cpuhp_issue_call()
2585 	if (!sp->startup.single && !sp->teardown.single)  in write_cpuhp_fail()