linux-master/kernel/cpu.c

55  * @single:	Single callback invocation
58  *		single entry callback for install/remove
60  * @cb_state:	The state for a single callback (install/uninstall)
74 	bool			single;
128 		int		(*single)(unsigned int cpu);
133 		int		(*single)(unsigned int cpu);
154 	return bringup ? !step->startup.single : !step->teardown.single;
162  * @node:	For multi-instance, do a single entry callback for install/remove
191 		cb = bringup ? step->startup.single : step->teardown.single;
708 	st->single = false;
752 	if (!st->single && st->state == st->target)
1038  * Each invocation of this function by the smpboot thread does a single AP
1042  *  - single: runs st->cb_state
1071 	if (st->single) {
1113 /* Invoke a single callback on a remote cpu */
1143 	st->single = true;
2036 		.startup.single		= NULL,
2037 		.teardown.single	= NULL,
2042 		.startup.single		= smpboot_create_threads,
2043 		.teardown.single	= NULL,
2048 		.startup.single		= perf_event_init_cpu,
2049 		.teardown.single	= perf_event_exit_cpu,
2053 		.startup.single		= random_prepare_cpu,
2054 		.teardown.single	= NULL,
2058 		.startup.single		= workqueue_prepare_cpu,
2059 		.teardown.single	= NULL,
2063 		.startup.single		= hrtimers_prepare_cpu,
2064 		.teardown.single	= NULL,
2068 		.startup.single		= smpcfd_prepare_cpu,
2069 		.teardown.single	= smpcfd_dead_cpu,
2073 		.startup.single		= relay_prepare_cpu,
2074 		.teardown.single	= NULL,
2078 		.startup.single		= rcutree_prepare_cpu,
2079 		.teardown.single	= rcutree_dead_cpu,
2088 		.startup.single		= timers_prepare_cpu,
2089 		.teardown.single	= timers_dead_cpu,
2099 		.startup.single		= cpuhp_kick_ap_alive,
2108 		.startup.single		= cpuhp_bringup_ap,
2109 		.teardown.single	= finish_cpu,
2118 		.startup.single		= bringup_cpu,
2119 		.teardown.single	= finish_cpu,
2138 		.startup.single		= sched_cpu_starting,
2139 		.teardown.single	= sched_cpu_dying,
2143 		.startup.single		= NULL,
2144 		.teardown.single	= rcutree_dying_cpu,
2148 		.startup.single		= NULL,
2149 		.teardown.single	= smpcfd_dying_cpu,
2153 		.startup.single		= NULL,
2154 		.teardown.single	= hrtimers_cpu_dying,
2158 		.startup.single		= NULL,
2159 		.teardown.single	= tick_cpu_dying,
2172 		.startup.single		= NULL,
2173 		.teardown.single	= takedown_cpu,
2179 		.startup.single		= NULL,
2180 		.teardown.single	= sched_cpu_wait_empty,
2186 		.startup.single		= smpboot_unpark_threads,
2187 		.teardown.single	= smpboot_park_threads,
2191 		.startup.single		= irq_affinity_online_cpu,
2192 		.teardown.single	= NULL,
2196 		.startup.single		= perf_event_init_cpu,
2197 		.teardown.single	= perf_event_exit_cpu,
2201 		.startup.single		= lockup_detector_online_cpu,
2202 		.teardown.single	= lockup_detector_offline_cpu,
2206 		.startup.single		= workqueue_online_cpu,
2207 		.teardown.single	= workqueue_offline_cpu,
2211 		.startup.single		= random_online_cpu,
2212 		.teardown.single	= NULL,
2216 		.startup.single		= rcutree_online_cpu,
2217 		.teardown.single	= rcutree_offline_cpu,
2228 		.startup.single		= sched_cpu_activate,
2229 		.teardown.single	= sched_cpu_deactivate,
2236 		.startup.single		= NULL,
2237 		.teardown.single	= NULL,
2309 	sp->startup.single = startup;
2310 	sp->teardown.single = teardown;
2319 	return cpuhp_get_step(state)->teardown.single;
2801 	if (!sp->startup.single && !sp->teardown.single)
3038  * mask value that has a single bit set only.