4 #include <linux/types.h>
10 CPUHP_PERF_X86_PREPARE,
11 CPUHP_PERF_X86_UNCORE_PREP,
12 CPUHP_PERF_X86_AMD_UNCORE_PREP,
20 CPUHP_MM_WRITEBACK_DEAD,
22 CPUHP_NET_MVNETA_DEAD,
24 CPUHP_ARM64_FPSIMD_DEAD,
25 CPUHP_ARM_OMAP_WAKE_DEAD,
27 CPUHP_BLOCK_SOFTIRQ_DEAD,
29 CPUHP_ACPI_CPUDRV_DEAD,
30 CPUHP_S390_PFAULT_DEAD,
34 CPUHP_POWER_NUMA_PREPARE,
35 CPUHP_HRTIMERS_PREPARE,
36 CPUHP_PROFILE_PREPARE,
41 CPUHP_MD_RAID5_PREPARE,
43 CPUHP_CPUIDLE_COUPLED_PREPARE,
44 CPUHP_POWERPC_PMAC_PREPARE,
45 CPUHP_POWERPC_MMU_CTX_PREPARE,
47 CPUHP_XEN_EVTCHN_PREPARE,
49 CPUHP_ARM_SHMOBILE_SCU_PREPARE,
50 CPUHP_SH_SH3X_PREPARE,
53 CPUHP_NOTF_ERR_INJ_PREPARE,
54 CPUHP_MIPS_SOC_PREPARE,
58 CPUHP_AP_SCHED_STARTING,
59 CPUHP_AP_RCUTREE_DYING,
60 CPUHP_AP_IRQ_GIC_STARTING,
61 CPUHP_AP_IRQ_GICV3_STARTING,
62 CPUHP_AP_IRQ_HIP04_STARTING,
63 CPUHP_AP_IRQ_ARMADA_XP_STARTING,
64 CPUHP_AP_IRQ_ARMADA_CASC_STARTING,
65 CPUHP_AP_IRQ_BCM2836_STARTING,
66 CPUHP_AP_ARM_MVEBU_COHERENCY,
67 CPUHP_AP_PERF_X86_UNCORE_STARTING,
68 CPUHP_AP_PERF_X86_AMD_UNCORE_STARTING,
69 CPUHP_AP_PERF_X86_STARTING,
70 CPUHP_AP_PERF_X86_AMD_IBS_STARTING,
71 CPUHP_AP_PERF_X86_CQM_STARTING,
72 CPUHP_AP_PERF_X86_CSTATE_STARTING,
73 CPUHP_AP_PERF_XTENSA_STARTING,
74 CPUHP_AP_PERF_METAG_STARTING,
75 CPUHP_AP_MIPS_OP_LOONGSON3_STARTING,
76 CPUHP_AP_ARM_VFP_STARTING,
77 CPUHP_AP_ARM64_DEBUG_MONITORS_STARTING,
78 CPUHP_AP_PERF_ARM_HW_BREAKPOINT_STARTING,
79 CPUHP_AP_PERF_ARM_STARTING,
80 CPUHP_AP_ARM_L2X0_STARTING,
81 CPUHP_AP_EXYNOS4_MCT_TIMER_STARTING,
82 CPUHP_AP_ARM_ARCH_TIMER_STARTING,
83 CPUHP_AP_ARM_GLOBAL_TIMER_STARTING,
84 CPUHP_AP_JCORE_TIMER_STARTING,
85 CPUHP_AP_ARM_TWD_STARTING,
86 CPUHP_AP_METAG_TIMER_STARTING,
87 CPUHP_AP_QCOM_TIMER_STARTING,
88 CPUHP_AP_ARMADA_TIMER_STARTING,
89 CPUHP_AP_MARCO_TIMER_STARTING,
90 CPUHP_AP_MIPS_GIC_TIMER_STARTING,
91 CPUHP_AP_ARC_TIMER_STARTING,
92 CPUHP_AP_KVM_STARTING,
93 CPUHP_AP_KVM_ARM_VGIC_INIT_STARTING,
94 CPUHP_AP_KVM_ARM_VGIC_STARTING,
95 CPUHP_AP_KVM_ARM_TIMER_STARTING,
96 /* Must be the last timer callback */
97 CPUHP_AP_DUMMY_TIMER_STARTING,
98 CPUHP_AP_ARM_XEN_STARTING,
99 CPUHP_AP_ARM_CORESIGHT_STARTING,
100 CPUHP_AP_ARM_CORESIGHT4_STARTING,
101 CPUHP_AP_ARM64_ISNDEP_STARTING,
102 CPUHP_AP_SMPCFD_DYING,
103 CPUHP_AP_X86_TBOOT_DYING,
106 CPUHP_AP_ONLINE_IDLE,
107 CPUHP_AP_SMPBOOT_THREADS,
108 CPUHP_AP_X86_VDSO_VMA_ONLINE,
109 CPUHP_AP_PERF_ONLINE,
110 CPUHP_AP_PERF_X86_ONLINE,
111 CPUHP_AP_PERF_X86_UNCORE_ONLINE,
112 CPUHP_AP_PERF_X86_AMD_UNCORE_ONLINE,
113 CPUHP_AP_PERF_X86_AMD_POWER_ONLINE,
114 CPUHP_AP_PERF_X86_RAPL_ONLINE,
115 CPUHP_AP_PERF_X86_CQM_ONLINE,
116 CPUHP_AP_PERF_X86_CSTATE_ONLINE,
117 CPUHP_AP_PERF_S390_CF_ONLINE,
118 CPUHP_AP_PERF_S390_SF_ONLINE,
119 CPUHP_AP_PERF_ARM_CCI_ONLINE,
120 CPUHP_AP_PERF_ARM_CCN_ONLINE,
121 CPUHP_AP_PERF_ARM_L2X0_ONLINE,
122 CPUHP_AP_WORKQUEUE_ONLINE,
123 CPUHP_AP_RANDOM_ONLINE,
124 CPUHP_AP_RCUTREE_ONLINE,
125 CPUHP_AP_NOTIFY_ONLINE,
127 CPUHP_AP_ONLINE_DYN_END = CPUHP_AP_ONLINE_DYN + 30,
128 CPUHP_AP_X86_HPET_ONLINE,
129 CPUHP_AP_X86_KVM_CLK_ONLINE,
134 int __cpuhp_setup_state(enum cpuhp_state state, const char *name, bool invoke,
135 int (*startup)(unsigned int cpu),
136 int (*teardown)(unsigned int cpu), bool multi_instance);
139 * cpuhp_setup_state - Setup hotplug state callbacks with calling the callbacks
140 * @state: The state for which the calls are installed
141 * @name: Name of the callback (will be used in debug output)
142 * @startup: startup callback function
143 * @teardown: teardown callback function
145 * Installs the callback functions and invokes the startup callback on
146 * the present cpus which have already reached the @state.
148 static inline int cpuhp_setup_state(enum cpuhp_state state,
150 int (*startup)(unsigned int cpu),
151 int (*teardown)(unsigned int cpu))
153 return __cpuhp_setup_state(state, name, true, startup, teardown, false);
157 * cpuhp_setup_state_nocalls - Setup hotplug state callbacks without calling the
159 * @state: The state for which the calls are installed
160 * @name: Name of the callback.
161 * @startup: startup callback function
162 * @teardown: teardown callback function
164 * Same as @cpuhp_setup_state except that no calls are executed are invoked
165 * during installation of this callback. NOP if SMP=n or HOTPLUG_CPU=n.
167 static inline int cpuhp_setup_state_nocalls(enum cpuhp_state state,
169 int (*startup)(unsigned int cpu),
170 int (*teardown)(unsigned int cpu))
172 return __cpuhp_setup_state(state, name, false, startup, teardown,
177 * cpuhp_setup_state_multi - Add callbacks for multi state
178 * @state: The state for which the calls are installed
179 * @name: Name of the callback.
180 * @startup: startup callback function
181 * @teardown: teardown callback function
183 * Sets the internal multi_instance flag and prepares a state to work as a multi
184 * instance callback. No callbacks are invoked at this point. The callbacks are
185 * invoked once an instance for this state are registered via
186 * @cpuhp_state_add_instance or @cpuhp_state_add_instance_nocalls.
188 static inline int cpuhp_setup_state_multi(enum cpuhp_state state,
190 int (*startup)(unsigned int cpu,
191 struct hlist_node *node),
192 int (*teardown)(unsigned int cpu,
193 struct hlist_node *node))
195 return __cpuhp_setup_state(state, name, false,
197 (void *) teardown, true);
200 int __cpuhp_state_add_instance(enum cpuhp_state state, struct hlist_node *node,
204 * cpuhp_state_add_instance - Add an instance for a state and invoke startup
206 * @state: The state for which the instance is installed
207 * @node: The node for this individual state.
209 * Installs the instance for the @state and invokes the startup callback on
210 * the present cpus which have already reached the @state. The @state must have
211 * been earlier marked as multi-instance by @cpuhp_setup_state_multi.
213 static inline int cpuhp_state_add_instance(enum cpuhp_state state,
214 struct hlist_node *node)
216 return __cpuhp_state_add_instance(state, node, true);
220 * cpuhp_state_add_instance_nocalls - Add an instance for a state without
221 * invoking the startup callback.
222 * @state: The state for which the instance is installed
223 * @node: The node for this individual state.
225 * Installs the instance for the @state The @state must have been earlier
226 * marked as multi-instance by @cpuhp_setup_state_multi.
228 static inline int cpuhp_state_add_instance_nocalls(enum cpuhp_state state,
229 struct hlist_node *node)
231 return __cpuhp_state_add_instance(state, node, false);
234 void __cpuhp_remove_state(enum cpuhp_state state, bool invoke);
237 * cpuhp_remove_state - Remove hotplug state callbacks and invoke the teardown
238 * @state: The state for which the calls are removed
240 * Removes the callback functions and invokes the teardown callback on
241 * the present cpus which have already reached the @state.
243 static inline void cpuhp_remove_state(enum cpuhp_state state)
245 __cpuhp_remove_state(state, true);
249 * cpuhp_remove_state_nocalls - Remove hotplug state callbacks without invoking
251 * @state: The state for which the calls are removed
253 static inline void cpuhp_remove_state_nocalls(enum cpuhp_state state)
255 __cpuhp_remove_state(state, false);
259 * cpuhp_remove_multi_state - Remove hotplug multi state callback
260 * @state: The state for which the calls are removed
262 * Removes the callback functions from a multi state. This is the reverse of
263 * cpuhp_setup_state_multi(). All instances should have been removed before
264 * invoking this function.
266 static inline void cpuhp_remove_multi_state(enum cpuhp_state state)
268 __cpuhp_remove_state(state, false);
271 int __cpuhp_state_remove_instance(enum cpuhp_state state,
272 struct hlist_node *node, bool invoke);
275 * cpuhp_state_remove_instance - Remove hotplug instance from state and invoke
276 * the teardown callback
277 * @state: The state from which the instance is removed
278 * @node: The node for this individual state.
280 * Removes the instance and invokes the teardown callback on the present cpus
281 * which have already reached the @state.
283 static inline int cpuhp_state_remove_instance(enum cpuhp_state state,
284 struct hlist_node *node)
286 return __cpuhp_state_remove_instance(state, node, true);
290 * cpuhp_state_remove_instance_nocalls - Remove hotplug instance from state
291 * without invoking the reatdown callback
292 * @state: The state from which the instance is removed
293 * @node: The node for this individual state.
295 * Removes the instance without invoking the teardown callback.
297 static inline int cpuhp_state_remove_instance_nocalls(enum cpuhp_state state,
298 struct hlist_node *node)
300 return __cpuhp_state_remove_instance(state, node, false);
304 void cpuhp_online_idle(enum cpuhp_state state);
306 static inline void cpuhp_online_idle(enum cpuhp_state state) { }