include/linux/cpuhotplug.h - third_party/kernel - Git at Google

 /* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __CPUHOTPLUG_H
 #define __CPUHOTPLUG_H

 #include <linux/types.h>

 /*
  * CPU-up			CPU-down
  *
  * BP		AP		BP		AP
  *
  * OFFLINE			OFFLINE
  *   |				  ^
  *   v				  |
  * BRINGUP_CPU->AP_OFFLINE	BRINGUP_CPU  <- AP_IDLE_DEAD (idle thread/play_dead)
  *		  |				AP_OFFLINE
  *		  v (IRQ-off)	  ,---------------^
  *		AP_ONLNE	  | (stop_machine)
  *		  |		TEARDOWN_CPU <-	AP_ONLINE_IDLE
  *		  |				  ^
  *		  v				  |
  *              AP_ACTIVE			AP_ACTIVE
  */

 enum cpuhp_state {
 	CPUHP_INVALID = -1,
 	CPUHP_OFFLINE = 0,
 	CPUHP_CREATE_THREADS,
 	CPUHP_PERF_PREPARE,
 	CPUHP_PERF_X86_PREPARE,
 	CPUHP_PERF_X86_AMD_UNCORE_PREP,
 	CPUHP_PERF_POWER,
 	CPUHP_PERF_SUPERH,
 	CPUHP_X86_HPET_DEAD,
 	CPUHP_X86_APB_DEAD,
 	CPUHP_X86_MCE_DEAD,
 	CPUHP_VIRT_NET_DEAD,
 	CPUHP_SLUB_DEAD,
 	CPUHP_MM_WRITEBACK_DEAD,
 	CPUHP_MM_VMSTAT_DEAD,
 	CPUHP_SOFTIRQ_DEAD,
 	CPUHP_NET_MVNETA_DEAD,
 	CPUHP_CPUIDLE_DEAD,
 	CPUHP_ARM64_FPSIMD_DEAD,
 	CPUHP_ARM_OMAP_WAKE_DEAD,
 	CPUHP_IRQ_POLL_DEAD,
 	CPUHP_BLOCK_SOFTIRQ_DEAD,
 	CPUHP_ACPI_CPUDRV_DEAD,
 	CPUHP_S390_PFAULT_DEAD,
 	CPUHP_BLK_MQ_DEAD,
 	CPUHP_FS_BUFF_DEAD,
 	CPUHP_PRINTK_DEAD,
 	CPUHP_MM_MEMCQ_DEAD,
 	CPUHP_PERCPU_CNT_DEAD,
 	CPUHP_RADIX_DEAD,
 	CPUHP_PAGE_ALLOC_DEAD,
 	CPUHP_NET_DEV_DEAD,
 	CPUHP_PCI_XGENE_DEAD,
 	CPUHP_IOMMU_INTEL_DEAD,
 	CPUHP_LUSTRE_CFS_DEAD,
 	CPUHP_AP_ARM_CACHE_B15_RAC_DEAD,
 	CPUHP_PADATA_DEAD,
 	CPUHP_WORKQUEUE_PREP,
 	CPUHP_POWER_NUMA_PREPARE,
 	CPUHP_HRTIMERS_PREPARE,
 	CPUHP_PROFILE_PREPARE,
 	CPUHP_X2APIC_PREPARE,
 	CPUHP_SMPCFD_PREPARE,
 	CPUHP_RELAY_PREPARE,
 	CPUHP_SLAB_PREPARE,
 	CPUHP_MD_RAID5_PREPARE,
 	CPUHP_RCUTREE_PREP,
 	CPUHP_CPUIDLE_COUPLED_PREPARE,
 	CPUHP_POWERPC_PMAC_PREPARE,
 	CPUHP_POWERPC_MMU_CTX_PREPARE,
 	CPUHP_XEN_PREPARE,
 	CPUHP_XEN_EVTCHN_PREPARE,
 	CPUHP_ARM_SHMOBILE_SCU_PREPARE,
 	CPUHP_SH_SH3X_PREPARE,
 	CPUHP_NET_FLOW_PREPARE,
 	CPUHP_TOPOLOGY_PREPARE,
 	CPUHP_NET_IUCV_PREPARE,
 	CPUHP_ARM_BL_PREPARE,
 	CPUHP_TRACE_RB_PREPARE,
 	CPUHP_MM_ZS_PREPARE,
 	CPUHP_MM_ZSWP_MEM_PREPARE,
 	CPUHP_MM_ZSWP_POOL_PREPARE,
 	CPUHP_KVM_PPC_BOOK3S_PREPARE,
 	CPUHP_ZCOMP_PREPARE,
 	CPUHP_TIMERS_PREPARE,
 	CPUHP_MIPS_SOC_PREPARE,
 	CPUHP_BP_PREPARE_DYN,
 	CPUHP_BP_PREPARE_DYN_END		= CPUHP_BP_PREPARE_DYN + 20,
 	CPUHP_BRINGUP_CPU,
 	CPUHP_AP_IDLE_DEAD,
 	CPUHP_AP_OFFLINE,
 	CPUHP_AP_SCHED_STARTING,
 	CPUHP_AP_RCUTREE_DYING,
 	CPUHP_AP_IRQ_GIC_STARTING,
 	CPUHP_AP_IRQ_HIP04_STARTING,
 	CPUHP_AP_IRQ_ARMADA_XP_STARTING,
 	CPUHP_AP_IRQ_BCM2836_STARTING,
 	CPUHP_AP_IRQ_MIPS_GIC_STARTING,
 	CPUHP_AP_ARM_MVEBU_COHERENCY,
 	CPUHP_AP_MICROCODE_LOADER,
 	CPUHP_AP_PERF_X86_AMD_UNCORE_STARTING,
 	CPUHP_AP_PERF_X86_STARTING,
 	CPUHP_AP_PERF_X86_AMD_IBS_STARTING,
 	CPUHP_AP_PERF_X86_CQM_STARTING,
 	CPUHP_AP_PERF_X86_CSTATE_STARTING,
 	CPUHP_AP_PERF_XTENSA_STARTING,
 	CPUHP_AP_MIPS_OP_LOONGSON3_STARTING,
 	CPUHP_AP_ARM_SDEI_STARTING,
 	CPUHP_AP_ARM_VFP_STARTING,
 	CPUHP_AP_ARM64_DEBUG_MONITORS_STARTING,
 	CPUHP_AP_PERF_ARM_HW_BREAKPOINT_STARTING,
 	CPUHP_AP_PERF_ARM_ACPI_STARTING,
 	CPUHP_AP_PERF_ARM_STARTING,
 	CPUHP_AP_ARM_L2X0_STARTING,
 	CPUHP_AP_EXYNOS4_MCT_TIMER_STARTING,
 	CPUHP_AP_ARM_ARCH_TIMER_STARTING,
 	CPUHP_AP_OMAP_DM_TIMER_STARTING,
 	CPUHP_AP_ARM_GLOBAL_TIMER_STARTING,
 	CPUHP_AP_JCORE_TIMER_STARTING,
 	CPUHP_AP_ARM_TWD_STARTING,
 	CPUHP_AP_QCOM_TIMER_STARTING,
 	CPUHP_AP_TEGRA_TIMER_STARTING,
 	CPUHP_AP_ARMADA_TIMER_STARTING,
 	CPUHP_AP_MARCO_TIMER_STARTING,
 	CPUHP_AP_MIPS_GIC_TIMER_STARTING,
 	CPUHP_AP_ARC_TIMER_STARTING,
 	CPUHP_AP_RISCV_TIMER_STARTING,
 	CPUHP_AP_CSKY_TIMER_STARTING,
 	CPUHP_AP_KVM_STARTING,
 	CPUHP_AP_KVM_ARM_VGIC_INIT_STARTING,
 	CPUHP_AP_KVM_ARM_VGIC_STARTING,
 	CPUHP_AP_KVM_ARM_TIMER_STARTING,
 	/* Must be the last timer callback */
 	CPUHP_AP_DUMMY_TIMER_STARTING,
 	CPUHP_AP_ARM_XEN_STARTING,
 	CPUHP_AP_ARM_CORESIGHT_STARTING,
 	CPUHP_AP_ARM64_ISNDEP_STARTING,
 	CPUHP_AP_SMPCFD_DYING,
 	CPUHP_AP_X86_TBOOT_DYING,
 	CPUHP_AP_ARM_CACHE_B15_RAC_DYING,
 	CPUHP_AP_ONLINE,
 	CPUHP_TEARDOWN_CPU,
 	CPUHP_AP_ONLINE_IDLE,
 	CPUHP_AP_SMPBOOT_THREADS,
 	CPUHP_AP_X86_VDSO_VMA_ONLINE,
 	CPUHP_AP_IRQ_AFFINITY_ONLINE,
 	CPUHP_AP_ARM_MVEBU_SYNC_CLOCKS,
 	CPUHP_AP_X86_INTEL_EPB_ONLINE,
 	CPUHP_AP_PERF_ONLINE,
 	CPUHP_AP_PERF_X86_ONLINE,
 	CPUHP_AP_PERF_X86_UNCORE_ONLINE,
 	CPUHP_AP_PERF_X86_AMD_UNCORE_ONLINE,
 	CPUHP_AP_PERF_X86_AMD_POWER_ONLINE,
 	CPUHP_AP_PERF_X86_RAPL_ONLINE,
 	CPUHP_AP_PERF_X86_CQM_ONLINE,
 	CPUHP_AP_PERF_X86_CSTATE_ONLINE,
 	CPUHP_AP_PERF_S390_CF_ONLINE,
 	CPUHP_AP_PERF_S390_SF_ONLINE,
 	CPUHP_AP_PERF_ARM_CCI_ONLINE,
 	CPUHP_AP_PERF_ARM_CCN_ONLINE,
 	CPUHP_AP_PERF_ARM_HISI_DDRC_ONLINE,
 	CPUHP_AP_PERF_ARM_HISI_HHA_ONLINE,
 	CPUHP_AP_PERF_ARM_HISI_L3_ONLINE,
 	CPUHP_AP_PERF_ARM_L2X0_ONLINE,
 	CPUHP_AP_PERF_ARM_QCOM_L2_ONLINE,
 	CPUHP_AP_PERF_ARM_QCOM_L3_ONLINE,
 	CPUHP_AP_PERF_ARM_APM_XGENE_ONLINE,
 	CPUHP_AP_PERF_ARM_CAVIUM_TX2_UNCORE_ONLINE,
 	CPUHP_AP_PERF_POWERPC_NEST_IMC_ONLINE,
 	CPUHP_AP_PERF_POWERPC_CORE_IMC_ONLINE,
 	CPUHP_AP_PERF_POWERPC_THREAD_IMC_ONLINE,
 	CPUHP_AP_PERF_POWERPC_TRACE_IMC_ONLINE,
 	CPUHP_AP_WATCHDOG_ONLINE,
 	CPUHP_AP_WORKQUEUE_ONLINE,
 	CPUHP_AP_RCUTREE_ONLINE,
 	CPUHP_AP_BASE_CACHEINFO_ONLINE,
 	CPUHP_AP_ONLINE_DYN,
 	CPUHP_AP_ONLINE_DYN_END		= CPUHP_AP_ONLINE_DYN + 30,
 	CPUHP_AP_X86_HPET_ONLINE,
 	CPUHP_AP_X86_KVM_CLK_ONLINE,
 	CPUHP_AP_ACTIVE,
 	CPUHP_ONLINE,
 };

 int __cpuhp_setup_state(enum cpuhp_state state,	const char *name, bool invoke,
 			int (*startup)(unsigned int cpu),
 			int (*teardown)(unsigned int cpu), bool multi_instance);

 int __cpuhp_setup_state_cpuslocked(enum cpuhp_state state, const char *name,
 				   bool invoke,
 				   int (*startup)(unsigned int cpu),
 				   int (*teardown)(unsigned int cpu),
 				   bool multi_instance);
 /**
  * cpuhp_setup_state - Setup hotplug state callbacks with calling the callbacks
  * @state:	The state for which the calls are installed
  * @name:	Name of the callback (will be used in debug output)
  * @startup:	startup callback function
  * @teardown:	teardown callback function
  *
  * Installs the callback functions and invokes the startup callback on
  * the present cpus which have already reached the @state.
  */
 static inline int cpuhp_setup_state(enum cpuhp_state state,
 				    const char *name,
 				    int (*startup)(unsigned int cpu),
 				    int (*teardown)(unsigned int cpu))
 {
 	return __cpuhp_setup_state(state, name, true, startup, teardown, false);
 }

 static inline int cpuhp_setup_state_cpuslocked(enum cpuhp_state state,
 					       const char *name,
 					       int (*startup)(unsigned int cpu),
 					       int (*teardown)(unsigned int cpu))
 {
 	return __cpuhp_setup_state_cpuslocked(state, name, true, startup,
 					      teardown, false);
 }

 /**
  * cpuhp_setup_state_nocalls - Setup hotplug state callbacks without calling the
  *			       callbacks
  * @state:	The state for which the calls are installed
  * @name:	Name of the callback.
  * @startup:	startup callback function
  * @teardown:	teardown callback function
  *
  * Same as @cpuhp_setup_state except that no calls are executed are invoked
  * during installation of this callback. NOP if SMP=n or HOTPLUG_CPU=n.
  */
 static inline int cpuhp_setup_state_nocalls(enum cpuhp_state state,
 					    const char *name,
 					    int (*startup)(unsigned int cpu),
 					    int (*teardown)(unsigned int cpu))
 {
 	return __cpuhp_setup_state(state, name, false, startup, teardown,
 				   false);
 }

 static inline int cpuhp_setup_state_nocalls_cpuslocked(enum cpuhp_state state,
 						     const char *name,
 						     int (*startup)(unsigned int cpu),
 						     int (*teardown)(unsigned int cpu))
 {
 	return __cpuhp_setup_state_cpuslocked(state, name, false, startup,
 					    teardown, false);
 }

 /**
  * cpuhp_setup_state_multi - Add callbacks for multi state
  * @state:	The state for which the calls are installed
  * @name:	Name of the callback.
  * @startup:	startup callback function
  * @teardown:	teardown callback function
  *
  * Sets the internal multi_instance flag and prepares a state to work as a multi
  * instance callback. No callbacks are invoked at this point. The callbacks are
  * invoked once an instance for this state are registered via
  * @cpuhp_state_add_instance or @cpuhp_state_add_instance_nocalls.
  */
 static inline int cpuhp_setup_state_multi(enum cpuhp_state state,
 					  const char *name,
 					  int (*startup)(unsigned int cpu,
 							 struct hlist_node *node),
 					  int (*teardown)(unsigned int cpu,
 							  struct hlist_node *node))
 {
 	return __cpuhp_setup_state(state, name, false,
 				   (void *) startup,
 				   (void *) teardown, true);
 }

 int __cpuhp_state_add_instance(enum cpuhp_state state, struct hlist_node *node,
 			       bool invoke);
 int __cpuhp_state_add_instance_cpuslocked(enum cpuhp_state state,
 					  struct hlist_node *node, bool invoke);

 /**
  * cpuhp_state_add_instance - Add an instance for a state and invoke startup
  *                            callback.
  * @state:	The state for which the instance is installed
  * @node:	The node for this individual state.
  *
  * Installs the instance for the @state and invokes the startup callback on
  * the present cpus which have already reached the @state. The @state must have
  * been earlier marked as multi-instance by @cpuhp_setup_state_multi.
  */
 static inline int cpuhp_state_add_instance(enum cpuhp_state state,
 					   struct hlist_node *node)
 {
 	return __cpuhp_state_add_instance(state, node, true);
 }

 /**
  * cpuhp_state_add_instance_nocalls - Add an instance for a state without
  *                                    invoking the startup callback.
  * @state:	The state for which the instance is installed
  * @node:	The node for this individual state.
  *
  * Installs the instance for the @state The @state must have been earlier
  * marked as multi-instance by @cpuhp_setup_state_multi.
  */
 static inline int cpuhp_state_add_instance_nocalls(enum cpuhp_state state,
 						   struct hlist_node *node)
 {
 	return __cpuhp_state_add_instance(state, node, false);
 }

 static inline int
 cpuhp_state_add_instance_nocalls_cpuslocked(enum cpuhp_state state,
 					    struct hlist_node *node)
 {
 	return __cpuhp_state_add_instance_cpuslocked(state, node, false);
 }

 void __cpuhp_remove_state(enum cpuhp_state state, bool invoke);
 void __cpuhp_remove_state_cpuslocked(enum cpuhp_state state, bool invoke);

 /**
  * cpuhp_remove_state - Remove hotplug state callbacks and invoke the teardown
  * @state:	The state for which the calls are removed
  *
  * Removes the callback functions and invokes the teardown callback on
  * the present cpus which have already reached the @state.
  */
 static inline void cpuhp_remove_state(enum cpuhp_state state)
 {
 	__cpuhp_remove_state(state, true);
 }

 /**
  * cpuhp_remove_state_nocalls - Remove hotplug state callbacks without invoking
  *				teardown
  * @state:	The state for which the calls are removed
  */
 static inline void cpuhp_remove_state_nocalls(enum cpuhp_state state)
 {
 	__cpuhp_remove_state(state, false);
 }

 static inline void cpuhp_remove_state_nocalls_cpuslocked(enum cpuhp_state state)
 {
 	__cpuhp_remove_state_cpuslocked(state, false);
 }

 /**
  * cpuhp_remove_multi_state - Remove hotplug multi state callback
  * @state:	The state for which the calls are removed
  *
  * Removes the callback functions from a multi state. This is the reverse of
  * cpuhp_setup_state_multi(). All instances should have been removed before
  * invoking this function.
  */
 static inline void cpuhp_remove_multi_state(enum cpuhp_state state)
 {
 	__cpuhp_remove_state(state, false);
 }

 int __cpuhp_state_remove_instance(enum cpuhp_state state,
 				  struct hlist_node *node, bool invoke);

 /**
  * cpuhp_state_remove_instance - Remove hotplug instance from state and invoke
  *                               the teardown callback
  * @state:	The state from which the instance is removed
  * @node:	The node for this individual state.
  *
  * Removes the instance and invokes the teardown callback on the present cpus
  * which have already reached the @state.
  */
 static inline int cpuhp_state_remove_instance(enum cpuhp_state state,
 					      struct hlist_node *node)
 {
 	return __cpuhp_state_remove_instance(state, node, true);
 }

 /**
  * cpuhp_state_remove_instance_nocalls - Remove hotplug instance from state
  *					 without invoking the reatdown callback
  * @state:	The state from which the instance is removed
  * @node:	The node for this individual state.
  *
  * Removes the instance without invoking the teardown callback.
  */
 static inline int cpuhp_state_remove_instance_nocalls(enum cpuhp_state state,
 						      struct hlist_node *node)
 {
 	return __cpuhp_state_remove_instance(state, node, false);
 }

 #ifdef CONFIG_SMP
 void cpuhp_online_idle(enum cpuhp_state state);
 #else
 static inline void cpuhp_online_idle(enum cpuhp_state state) { }
 #endif

 #endif
	/* SPDX-License-Identifier: GPL-2.0 */
	#ifndef __CPUHOTPLUG_H
	#define __CPUHOTPLUG_H

	#include <linux/types.h>

	/*
	* CPU-up CPU-down
	*
	* BP AP BP AP
	*
	* OFFLINE OFFLINE
	* \| ^
	* v \|
	* BRINGUP_CPU->AP_OFFLINE BRINGUP_CPU <- AP_IDLE_DEAD (idle thread/play_dead)
	* \| AP_OFFLINE
	* v (IRQ-off) ,---------------^
	* AP_ONLNE \| (stop_machine)
	* \| TEARDOWN_CPU <- AP_ONLINE_IDLE
	* \| ^
	* v \|
	* AP_ACTIVE AP_ACTIVE
	*/

	enum cpuhp_state {
	CPUHP_INVALID = -1,
	CPUHP_OFFLINE = 0,
	CPUHP_CREATE_THREADS,
	CPUHP_PERF_PREPARE,
	CPUHP_PERF_X86_PREPARE,
	CPUHP_PERF_X86_AMD_UNCORE_PREP,
	CPUHP_PERF_POWER,
	CPUHP_PERF_SUPERH,
	CPUHP_X86_HPET_DEAD,
	CPUHP_X86_APB_DEAD,
	CPUHP_X86_MCE_DEAD,
	CPUHP_VIRT_NET_DEAD,
	CPUHP_SLUB_DEAD,
	CPUHP_MM_WRITEBACK_DEAD,
	CPUHP_MM_VMSTAT_DEAD,
	CPUHP_SOFTIRQ_DEAD,
	CPUHP_NET_MVNETA_DEAD,
	CPUHP_CPUIDLE_DEAD,
	CPUHP_ARM64_FPSIMD_DEAD,
	CPUHP_ARM_OMAP_WAKE_DEAD,
	CPUHP_IRQ_POLL_DEAD,
	CPUHP_BLOCK_SOFTIRQ_DEAD,
	CPUHP_ACPI_CPUDRV_DEAD,
	CPUHP_S390_PFAULT_DEAD,
	CPUHP_BLK_MQ_DEAD,
	CPUHP_FS_BUFF_DEAD,
	CPUHP_PRINTK_DEAD,
	CPUHP_MM_MEMCQ_DEAD,
	CPUHP_PERCPU_CNT_DEAD,
	CPUHP_RADIX_DEAD,
	CPUHP_PAGE_ALLOC_DEAD,
	CPUHP_NET_DEV_DEAD,
	CPUHP_PCI_XGENE_DEAD,
	CPUHP_IOMMU_INTEL_DEAD,
	CPUHP_LUSTRE_CFS_DEAD,
	CPUHP_AP_ARM_CACHE_B15_RAC_DEAD,
	CPUHP_PADATA_DEAD,
	CPUHP_WORKQUEUE_PREP,
	CPUHP_POWER_NUMA_PREPARE,
	CPUHP_HRTIMERS_PREPARE,
	CPUHP_PROFILE_PREPARE,
	CPUHP_X2APIC_PREPARE,
	CPUHP_SMPCFD_PREPARE,
	CPUHP_RELAY_PREPARE,
	CPUHP_SLAB_PREPARE,
	CPUHP_MD_RAID5_PREPARE,
	CPUHP_RCUTREE_PREP,
	CPUHP_CPUIDLE_COUPLED_PREPARE,
	CPUHP_POWERPC_PMAC_PREPARE,
	CPUHP_POWERPC_MMU_CTX_PREPARE,
	CPUHP_XEN_PREPARE,
	CPUHP_XEN_EVTCHN_PREPARE,
	CPUHP_ARM_SHMOBILE_SCU_PREPARE,
	CPUHP_SH_SH3X_PREPARE,
	CPUHP_NET_FLOW_PREPARE,
	CPUHP_TOPOLOGY_PREPARE,
	CPUHP_NET_IUCV_PREPARE,
	CPUHP_ARM_BL_PREPARE,
	CPUHP_TRACE_RB_PREPARE,
	CPUHP_MM_ZS_PREPARE,
	CPUHP_MM_ZSWP_MEM_PREPARE,
	CPUHP_MM_ZSWP_POOL_PREPARE,
	CPUHP_KVM_PPC_BOOK3S_PREPARE,
	CPUHP_ZCOMP_PREPARE,
	CPUHP_TIMERS_PREPARE,
	CPUHP_MIPS_SOC_PREPARE,
	CPUHP_BP_PREPARE_DYN,
	CPUHP_BP_PREPARE_DYN_END = CPUHP_BP_PREPARE_DYN + 20,
	CPUHP_BRINGUP_CPU,
	CPUHP_AP_IDLE_DEAD,
	CPUHP_AP_OFFLINE,
	CPUHP_AP_SCHED_STARTING,
	CPUHP_AP_RCUTREE_DYING,
	CPUHP_AP_IRQ_GIC_STARTING,
	CPUHP_AP_IRQ_HIP04_STARTING,
	CPUHP_AP_IRQ_ARMADA_XP_STARTING,
	CPUHP_AP_IRQ_BCM2836_STARTING,
	CPUHP_AP_IRQ_MIPS_GIC_STARTING,
	CPUHP_AP_ARM_MVEBU_COHERENCY,
	CPUHP_AP_MICROCODE_LOADER,
	CPUHP_AP_PERF_X86_AMD_UNCORE_STARTING,
	CPUHP_AP_PERF_X86_STARTING,
	CPUHP_AP_PERF_X86_AMD_IBS_STARTING,
	CPUHP_AP_PERF_X86_CQM_STARTING,
	CPUHP_AP_PERF_X86_CSTATE_STARTING,
	CPUHP_AP_PERF_XTENSA_STARTING,
	CPUHP_AP_MIPS_OP_LOONGSON3_STARTING,
	CPUHP_AP_ARM_SDEI_STARTING,
	CPUHP_AP_ARM_VFP_STARTING,
	CPUHP_AP_ARM64_DEBUG_MONITORS_STARTING,
	CPUHP_AP_PERF_ARM_HW_BREAKPOINT_STARTING,
	CPUHP_AP_PERF_ARM_ACPI_STARTING,
	CPUHP_AP_PERF_ARM_STARTING,
	CPUHP_AP_ARM_L2X0_STARTING,
	CPUHP_AP_EXYNOS4_MCT_TIMER_STARTING,
	CPUHP_AP_ARM_ARCH_TIMER_STARTING,
	CPUHP_AP_OMAP_DM_TIMER_STARTING,
	CPUHP_AP_ARM_GLOBAL_TIMER_STARTING,
	CPUHP_AP_JCORE_TIMER_STARTING,
	CPUHP_AP_ARM_TWD_STARTING,
	CPUHP_AP_QCOM_TIMER_STARTING,
	CPUHP_AP_TEGRA_TIMER_STARTING,
	CPUHP_AP_ARMADA_TIMER_STARTING,
	CPUHP_AP_MARCO_TIMER_STARTING,
	CPUHP_AP_MIPS_GIC_TIMER_STARTING,
	CPUHP_AP_ARC_TIMER_STARTING,
	CPUHP_AP_RISCV_TIMER_STARTING,
	CPUHP_AP_CSKY_TIMER_STARTING,
	CPUHP_AP_KVM_STARTING,
	CPUHP_AP_KVM_ARM_VGIC_INIT_STARTING,
	CPUHP_AP_KVM_ARM_VGIC_STARTING,
	CPUHP_AP_KVM_ARM_TIMER_STARTING,
	/* Must be the last timer callback */
	CPUHP_AP_DUMMY_TIMER_STARTING,
	CPUHP_AP_ARM_XEN_STARTING,
	CPUHP_AP_ARM_CORESIGHT_STARTING,
	CPUHP_AP_ARM64_ISNDEP_STARTING,
	CPUHP_AP_SMPCFD_DYING,
	CPUHP_AP_X86_TBOOT_DYING,
	CPUHP_AP_ARM_CACHE_B15_RAC_DYING,
	CPUHP_AP_ONLINE,
	CPUHP_TEARDOWN_CPU,
	CPUHP_AP_ONLINE_IDLE,
	CPUHP_AP_SMPBOOT_THREADS,
	CPUHP_AP_X86_VDSO_VMA_ONLINE,
	CPUHP_AP_IRQ_AFFINITY_ONLINE,
	CPUHP_AP_ARM_MVEBU_SYNC_CLOCKS,
	CPUHP_AP_X86_INTEL_EPB_ONLINE,
	CPUHP_AP_PERF_ONLINE,
	CPUHP_AP_PERF_X86_ONLINE,
	CPUHP_AP_PERF_X86_UNCORE_ONLINE,
	CPUHP_AP_PERF_X86_AMD_UNCORE_ONLINE,
	CPUHP_AP_PERF_X86_AMD_POWER_ONLINE,
	CPUHP_AP_PERF_X86_RAPL_ONLINE,
	CPUHP_AP_PERF_X86_CQM_ONLINE,
	CPUHP_AP_PERF_X86_CSTATE_ONLINE,
	CPUHP_AP_PERF_S390_CF_ONLINE,
	CPUHP_AP_PERF_S390_SF_ONLINE,
	CPUHP_AP_PERF_ARM_CCI_ONLINE,
	CPUHP_AP_PERF_ARM_CCN_ONLINE,
	CPUHP_AP_PERF_ARM_HISI_DDRC_ONLINE,
	CPUHP_AP_PERF_ARM_HISI_HHA_ONLINE,
	CPUHP_AP_PERF_ARM_HISI_L3_ONLINE,
	CPUHP_AP_PERF_ARM_L2X0_ONLINE,
	CPUHP_AP_PERF_ARM_QCOM_L2_ONLINE,
	CPUHP_AP_PERF_ARM_QCOM_L3_ONLINE,
	CPUHP_AP_PERF_ARM_APM_XGENE_ONLINE,
	CPUHP_AP_PERF_ARM_CAVIUM_TX2_UNCORE_ONLINE,
	CPUHP_AP_PERF_POWERPC_NEST_IMC_ONLINE,
	CPUHP_AP_PERF_POWERPC_CORE_IMC_ONLINE,
	CPUHP_AP_PERF_POWERPC_THREAD_IMC_ONLINE,
	CPUHP_AP_PERF_POWERPC_TRACE_IMC_ONLINE,
	CPUHP_AP_WATCHDOG_ONLINE,
	CPUHP_AP_WORKQUEUE_ONLINE,
	CPUHP_AP_RCUTREE_ONLINE,
	CPUHP_AP_BASE_CACHEINFO_ONLINE,
	CPUHP_AP_ONLINE_DYN,
	CPUHP_AP_ONLINE_DYN_END = CPUHP_AP_ONLINE_DYN + 30,
	CPUHP_AP_X86_HPET_ONLINE,
	CPUHP_AP_X86_KVM_CLK_ONLINE,
	CPUHP_AP_ACTIVE,
	CPUHP_ONLINE,
	};

	int __cpuhp_setup_state(enum cpuhp_state state, const char *name, bool invoke,
	int (*startup)(unsigned int cpu),
	int (*teardown)(unsigned int cpu), bool multi_instance);

	int __cpuhp_setup_state_cpuslocked(enum cpuhp_state state, const char *name,
	bool invoke,
	int (*startup)(unsigned int cpu),
	int (*teardown)(unsigned int cpu),
	bool multi_instance);
	/**
	* cpuhp_setup_state - Setup hotplug state callbacks with calling the callbacks
	* @state: The state for which the calls are installed
	* @name: Name of the callback (will be used in debug output)
	* @startup: startup callback function
	* @teardown: teardown callback function
	*
	* Installs the callback functions and invokes the startup callback on
	* the present cpus which have already reached the @state.
	*/
	static inline int cpuhp_setup_state(enum cpuhp_state state,
	const char *name,
	int (*startup)(unsigned int cpu),
	int (*teardown)(unsigned int cpu))
	{
	return __cpuhp_setup_state(state, name, true, startup, teardown, false);
	}

	static inline int cpuhp_setup_state_cpuslocked(enum cpuhp_state state,
	const char *name,
	int (*startup)(unsigned int cpu),
	int (*teardown)(unsigned int cpu))
	{
	return __cpuhp_setup_state_cpuslocked(state, name, true, startup,
	teardown, false);
	}

	/**
	* cpuhp_setup_state_nocalls - Setup hotplug state callbacks without calling the
	* callbacks
	* @state: The state for which the calls are installed
	* @name: Name of the callback.
	* @startup: startup callback function
	* @teardown: teardown callback function
	*
	* Same as @cpuhp_setup_state except that no calls are executed are invoked
	* during installation of this callback. NOP if SMP=n or HOTPLUG_CPU=n.
	*/
	static inline int cpuhp_setup_state_nocalls(enum cpuhp_state state,
	const char *name,
	int (*startup)(unsigned int cpu),
	int (*teardown)(unsigned int cpu))
	{
	return __cpuhp_setup_state(state, name, false, startup, teardown,
	false);
	}

	static inline int cpuhp_setup_state_nocalls_cpuslocked(enum cpuhp_state state,
	const char *name,
	int (*startup)(unsigned int cpu),
	int (*teardown)(unsigned int cpu))
	{
	return __cpuhp_setup_state_cpuslocked(state, name, false, startup,
	teardown, false);
	}

	/**
	* cpuhp_setup_state_multi - Add callbacks for multi state
	* @state: The state for which the calls are installed
	* @name: Name of the callback.
	* @startup: startup callback function
	* @teardown: teardown callback function
	*
	* Sets the internal multi_instance flag and prepares a state to work as a multi
	* instance callback. No callbacks are invoked at this point. The callbacks are
	* invoked once an instance for this state are registered via
	* @cpuhp_state_add_instance or @cpuhp_state_add_instance_nocalls.
	*/
	static inline int cpuhp_setup_state_multi(enum cpuhp_state state,
	const char *name,
	int (*startup)(unsigned int cpu,
	struct hlist_node *node),
	int (*teardown)(unsigned int cpu,
	struct hlist_node *node))
	{
	return __cpuhp_setup_state(state, name, false,
	(void *) startup,
	(void *) teardown, true);
	}

	int __cpuhp_state_add_instance(enum cpuhp_state state, struct hlist_node *node,
	bool invoke);
	int __cpuhp_state_add_instance_cpuslocked(enum cpuhp_state state,
	struct hlist_node *node, bool invoke);

	/**
	* cpuhp_state_add_instance - Add an instance for a state and invoke startup
	* callback.
	* @state: The state for which the instance is installed
	* @node: The node for this individual state.
	*
	* Installs the instance for the @state and invokes the startup callback on
	* the present cpus which have already reached the @state. The @state must have
	* been earlier marked as multi-instance by @cpuhp_setup_state_multi.
	*/
	static inline int cpuhp_state_add_instance(enum cpuhp_state state,
	struct hlist_node *node)
	{
	return __cpuhp_state_add_instance(state, node, true);
	}

	/**
	* cpuhp_state_add_instance_nocalls - Add an instance for a state without
	* invoking the startup callback.
	* @state: The state for which the instance is installed
	* @node: The node for this individual state.
	*
	* Installs the instance for the @state The @state must have been earlier
	* marked as multi-instance by @cpuhp_setup_state_multi.
	*/
	static inline int cpuhp_state_add_instance_nocalls(enum cpuhp_state state,
	struct hlist_node *node)
	{
	return __cpuhp_state_add_instance(state, node, false);
	}

	static inline int
	cpuhp_state_add_instance_nocalls_cpuslocked(enum cpuhp_state state,
	struct hlist_node *node)
	{
	return __cpuhp_state_add_instance_cpuslocked(state, node, false);
	}

	void __cpuhp_remove_state(enum cpuhp_state state, bool invoke);
	void __cpuhp_remove_state_cpuslocked(enum cpuhp_state state, bool invoke);

	/**
	* cpuhp_remove_state - Remove hotplug state callbacks and invoke the teardown
	* @state: The state for which the calls are removed
	*
	* Removes the callback functions and invokes the teardown callback on
	* the present cpus which have already reached the @state.
	*/
	static inline void cpuhp_remove_state(enum cpuhp_state state)
	{
	__cpuhp_remove_state(state, true);
	}

	/**
	* cpuhp_remove_state_nocalls - Remove hotplug state callbacks without invoking
	* teardown
	* @state: The state for which the calls are removed
	*/
	static inline void cpuhp_remove_state_nocalls(enum cpuhp_state state)
	{
	__cpuhp_remove_state(state, false);
	}

	static inline void cpuhp_remove_state_nocalls_cpuslocked(enum cpuhp_state state)
	{
	__cpuhp_remove_state_cpuslocked(state, false);
	}

	/**
	* cpuhp_remove_multi_state - Remove hotplug multi state callback
	* @state: The state for which the calls are removed
	*
	* Removes the callback functions from a multi state. This is the reverse of
	* cpuhp_setup_state_multi(). All instances should have been removed before
	* invoking this function.
	*/
	static inline void cpuhp_remove_multi_state(enum cpuhp_state state)
	{
	__cpuhp_remove_state(state, false);
	}

	int __cpuhp_state_remove_instance(enum cpuhp_state state,
	struct hlist_node *node, bool invoke);

	/**
	* cpuhp_state_remove_instance - Remove hotplug instance from state and invoke
	* the teardown callback
	* @state: The state from which the instance is removed
	* @node: The node for this individual state.
	*
	* Removes the instance and invokes the teardown callback on the present cpus
	* which have already reached the @state.
	*/
	static inline int cpuhp_state_remove_instance(enum cpuhp_state state,
	struct hlist_node *node)
	{
	return __cpuhp_state_remove_instance(state, node, true);
	}

	/**
	* cpuhp_state_remove_instance_nocalls - Remove hotplug instance from state
	* without invoking the reatdown callback
	* @state: The state from which the instance is removed
	* @node: The node for this individual state.
	*
	* Removes the instance without invoking the teardown callback.
	*/
	static inline int cpuhp_state_remove_instance_nocalls(enum cpuhp_state state,
	struct hlist_node *node)
	{
	return __cpuhp_state_remove_instance(state, node, false);
	}

	#ifdef CONFIG_SMP
	void cpuhp_online_idle(enum cpuhp_state state);
	#else
	static inline void cpuhp_online_idle(enum cpuhp_state state) { }
	#endif

	#endif