307 lines
9.4 KiB
C
307 lines
9.4 KiB
C
#ifndef __CPUHOTPLUG_H
|
|
#define __CPUHOTPLUG_H
|
|
|
|
#include <linux/types.h>
|
|
|
|
enum cpuhp_state {
|
|
CPUHP_OFFLINE,
|
|
CPUHP_CREATE_THREADS,
|
|
CPUHP_PERF_PREPARE,
|
|
CPUHP_PERF_X86_PREPARE,
|
|
CPUHP_PERF_X86_UNCORE_PREP,
|
|
CPUHP_PERF_X86_AMD_UNCORE_PREP,
|
|
CPUHP_PERF_X86_RAPL_PREP,
|
|
CPUHP_PERF_BFIN,
|
|
CPUHP_PERF_POWER,
|
|
CPUHP_PERF_SUPERH,
|
|
CPUHP_X86_HPET_DEAD,
|
|
CPUHP_X86_APB_DEAD,
|
|
CPUHP_VIRT_NET_DEAD,
|
|
CPUHP_SLUB_DEAD,
|
|
CPUHP_MM_WRITEBACK_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_VIRT_SCSI_DEAD,
|
|
CPUHP_ACPI_CPUDRV_DEAD,
|
|
CPUHP_S390_PFAULT_DEAD,
|
|
CPUHP_BLK_MQ_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_NOTIFY_PREPARE,
|
|
CPUHP_ARM_SHMOBILE_SCU_PREPARE,
|
|
CPUHP_SH_SH3X_PREPARE,
|
|
CPUHP_BLK_MQ_PREPARE,
|
|
CPUHP_TIMERS_DEAD,
|
|
CPUHP_NOTF_ERR_INJ_PREPARE,
|
|
CPUHP_MIPS_SOC_PREPARE,
|
|
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_GICV3_STARTING,
|
|
CPUHP_AP_IRQ_HIP04_STARTING,
|
|
CPUHP_AP_IRQ_ARMADA_XP_STARTING,
|
|
CPUHP_AP_IRQ_ARMADA_CASC_STARTING,
|
|
CPUHP_AP_IRQ_BCM2836_STARTING,
|
|
CPUHP_AP_ARM_MVEBU_COHERENCY,
|
|
CPUHP_AP_PERF_X86_UNCORE_STARTING,
|
|
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_PERF_METAG_STARTING,
|
|
CPUHP_AP_MIPS_OP_LOONGSON3_STARTING,
|
|
CPUHP_AP_ARM_VFP_STARTING,
|
|
CPUHP_AP_ARM64_DEBUG_MONITORS_STARTING,
|
|
CPUHP_AP_PERF_ARM_HW_BREAKPOINT_STARTING,
|
|
CPUHP_AP_PERF_ARM_STARTING,
|
|
CPUHP_AP_ARM_L2X0_STARTING,
|
|
CPUHP_AP_ARM_ARCH_TIMER_STARTING,
|
|
CPUHP_AP_ARM_GLOBAL_TIMER_STARTING,
|
|
CPUHP_AP_DUMMY_TIMER_STARTING,
|
|
CPUHP_AP_EXYNOS4_MCT_TIMER_STARTING,
|
|
CPUHP_AP_ARM_TWD_STARTING,
|
|
CPUHP_AP_METAG_TIMER_STARTING,
|
|
CPUHP_AP_QCOM_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_KVM_STARTING,
|
|
CPUHP_AP_KVM_ARM_VGIC_INIT_STARTING,
|
|
CPUHP_AP_KVM_ARM_VGIC_STARTING,
|
|
CPUHP_AP_KVM_ARM_TIMER_STARTING,
|
|
CPUHP_AP_ARM_XEN_STARTING,
|
|
CPUHP_AP_ARM_CORESIGHT_STARTING,
|
|
CPUHP_AP_ARM_CORESIGHT4_STARTING,
|
|
CPUHP_AP_ARM64_ISNDEP_STARTING,
|
|
CPUHP_AP_SMPCFD_DYING,
|
|
CPUHP_AP_X86_TBOOT_DYING,
|
|
CPUHP_AP_ONLINE,
|
|
CPUHP_TEARDOWN_CPU,
|
|
CPUHP_AP_ONLINE_IDLE,
|
|
CPUHP_AP_SMPBOOT_THREADS,
|
|
CPUHP_AP_X86_VDSO_VMA_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_L2X0_ONLINE,
|
|
CPUHP_AP_WORKQUEUE_ONLINE,
|
|
CPUHP_AP_RCUTREE_ONLINE,
|
|
CPUHP_AP_NOTIFY_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);
|
|
|
|
/**
|
|
* 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);
|
|
}
|
|
|
|
/**
|
|
* 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);
|
|
}
|
|
|
|
/**
|
|
* 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);
|
|
|
|
/**
|
|
* 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);
|
|
}
|
|
|
|
void __cpuhp_remove_state(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);
|
|
}
|
|
|
|
/**
|
|
* 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
|