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;
2084 		.startup.single		= NULL,
2085 		.teardown.single	= NULL,
2090 		.startup.single		= smpboot_create_threads,
2091 		.teardown.single	= NULL,
2096 		.startup.single		= perf_event_init_cpu,
2097 		.teardown.single	= perf_event_exit_cpu,
2101 		.startup.single		= random_prepare_cpu,
2102 		.teardown.single	= NULL,
2106 		.startup.single		= workqueue_prepare_cpu,
2107 		.teardown.single	= NULL,
2111 		.startup.single		= hrtimers_prepare_cpu,
2112 		.teardown.single	= NULL,
2116 		.startup.single		= smpcfd_prepare_cpu,
2117 		.teardown.single	= smpcfd_dead_cpu,
2121 		.startup.single		= relay_prepare_cpu,
2122 		.teardown.single	= NULL,
2126 		.startup.single		= rcutree_prepare_cpu,
2127 		.teardown.single	= rcutree_dead_cpu,
2136 		.startup.single		= timers_prepare_cpu,
2137 		.teardown.single	= timers_dead_cpu,
2147 		.startup.single		= cpuhp_kick_ap_alive,
2156 		.startup.single		= cpuhp_bringup_ap,
2157 		.teardown.single	= finish_cpu,
2166 		.startup.single		= bringup_cpu,
2167 		.teardown.single	= finish_cpu,
2186 		.startup.single		= sched_cpu_starting,
2187 		.teardown.single	= sched_cpu_dying,
2191 		.startup.single		= NULL,
2192 		.teardown.single	= rcutree_dying_cpu,
2196 		.startup.single		= NULL,
2197 		.teardown.single	= smpcfd_dying_cpu,
2201 		.startup.single		= NULL,
2202 		.teardown.single	= hrtimers_cpu_dying,
2206 		.startup.single		= NULL,
2207 		.teardown.single	= tick_cpu_dying,
2220 		.startup.single		= NULL,
2221 		.teardown.single	= takedown_cpu,
2227 		.startup.single		= NULL,
2228 		.teardown.single	= sched_cpu_wait_empty,
2234 		.startup.single		= smpboot_unpark_threads,
2235 		.teardown.single	= smpboot_park_threads,
2239 		.startup.single		= irq_affinity_online_cpu,
2240 		.teardown.single	= NULL,
2244 		.startup.single		= perf_event_init_cpu,
2245 		.teardown.single	= perf_event_exit_cpu,
2249 		.startup.single		= lockup_detector_online_cpu,
2250 		.teardown.single	= lockup_detector_offline_cpu,
2254 		.startup.single		= workqueue_online_cpu,
2255 		.teardown.single	= workqueue_offline_cpu,
2259 		.startup.single		= random_online_cpu,
2260 		.teardown.single	= NULL,
2264 		.startup.single		= rcutree_online_cpu,
2265 		.teardown.single	= rcutree_offline_cpu,
2276 		.startup.single		= sched_cpu_activate,
2277 		.teardown.single	= sched_cpu_deactivate,
2284 		.startup.single		= NULL,
2285 		.teardown.single	= NULL,
2357 	sp->startup.single = startup;
2358 	sp->teardown.single = teardown;
2367 	return cpuhp_get_step(state)->teardown.single;
2849 	if (!sp->startup.single && !sp->teardown.single)
3086  * mask value that has a single bit set only.