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.
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
280  * cpuhp_setup_state_cpuslocked - Setup hotplug state callbacks with calling
301  * cpuhp_setup_state_nocalls - Setup hotplug state callbacks without calling the
321  * cpuhp_setup_state_nocalls_cpuslocked - Setup hotplug state callbacks without
343  * cpuhp_setup_state_multi - Add callbacks for multi state
349  * Sets the internal multi_instance flag and prepares a state to work as a multi
350  * instance callback. No callbacks are invoked at this point. The callbacks are
351  * invoked once an instance for this state are registered via
372  * cpuhp_state_add_instance - Add an instance for a state and invoke startup
374  * @state:	The state for which the instance is installed
377  * Installs the instance for the @state and invokes the registered 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
391  * @state:	The state for which the instance is installed
394  * Installs the instance for the @state. The @state must have been earlier
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
409  * @state:	The state for which the instance is installed
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
477  * cpuhp_state_remove_instance - Remove hotplug instance from state and invoke
479  * @state:	The state from which the instance is removed
482  * Removes the instance and invokes the teardown callback on the online cpus
492  * cpuhp_state_remove_instance_nocalls - Remove hotplug instance from state
494  * @state:	The state from which the instance is removed
497  * Removes the instance without invoking the teardown callback.