include/linux/cpuhotplug.h

1 /* SPDX-License-Identifier: GPL-2.0 */
8  * CPU-up			CPU-down
15  * BRINGUP_CPU->AP_OFFLINE	BRINGUP_CPU  <- AP_IDLE_DEAD (idle thread/play_dead)
17  *		  v (IRQ-off)	  ,---------------^
19  *		  |		TEARDOWN_CPU <-	AP_ONLINE_IDLE
30  * CPUHP_ONLINE - 1 down to CPUHP_OFFLINE.
52  * for the @state argument of the setup function.
54  * See Documentation/core-api/cpu_hotplug.rst for further information and
58 	CPUHP_INVALID = -1,
261  * cpuhp_setup_state - Setup hotplug state callbacks with calling the @startup
265  * @startup:	startup callback function or NULL if not required
266  * @teardown:	teardown callback function or NULL if not required
280  * cpuhp_setup_state_cpuslocked - Setup hotplug state callbacks with calling
285  * @startup:	startup callback function or NULL if not required
286  * @teardown:	teardown callback function or NULL if not required
301  * cpuhp_setup_state_nocalls - Setup hotplug state callbacks without calling the
305  * @startup:	startup callback function or NULL if not required
306  * @teardown:	teardown callback function or NULL if not required
321  * cpuhp_setup_state_nocalls_cpuslocked - Setup hotplug state callbacks without
327  * @startup:	startup callback function or NULL if not required
328  * @teardown:	teardown callback function or NULL if not required
343  * cpuhp_setup_state_multi - Add callbacks for multi state
346  * @startup:	startup callback function or NULL if not required
347  * @teardown:	teardown callback function or NULL if not required
349  * Sets the internal multi_instance flag and prepares a state to work as a multi
372  * cpuhp_state_add_instance - Add an instance for a state and invoke startup
379  * @state must have been earlier marked as multi-instance by
389  * cpuhp_state_add_instance_nocalls - Add an instance for a state without
395  * marked as multi-instance by cpuhp_setup_state_multi. NOP if SMP=n or
405  * cpuhp_state_add_instance_nocalls_cpuslocked - Add an instance for a state
426  * cpuhp_remove_state - Remove hotplug state callbacks and invoke the teardown
438  * cpuhp_remove_state_nocalls - Remove hotplug state callbacks without invoking
448  * cpuhp_remove_state_nocalls_cpuslocked - Remove hotplug state callbacks without invoking
461  * cpuhp_remove_multi_state - Remove hotplug multi state callback
464  * Removes the callback functions from a multi state. This is the reverse of
466  * invoking this function.
477  * cpuhp_state_remove_instance - Remove hotplug instance from state and invoke
492  * cpuhp_state_remove_instance_nocalls - Remove hotplug instance from state