1 /* SPDX-License-Identifier: GPL-2.0 */
5 #include <linux/types.h>
15 * BRINGUP_CPU->AP_OFFLINE BRINGUP_CPU <- AP_IDLE_DEAD (idle thread/play_dead)
17 * v (IRQ-off) ,---------------^
18 * AP_ONLNE | (stop_machine)
19 * | TEARDOWN_CPU <- AP_ONLINE_IDLE
30 CPUHP_PERF_X86_PREPARE
,
31 CPUHP_PERF_X86_AMD_UNCORE_PREP
,
40 CPUHP_MM_WRITEBACK_DEAD
,
43 CPUHP_NET_MVNETA_DEAD
,
45 CPUHP_ARM64_FPSIMD_DEAD
,
46 CPUHP_ARM_OMAP_WAKE_DEAD
,
48 CPUHP_BLOCK_SOFTIRQ_DEAD
,
49 CPUHP_ACPI_CPUDRV_DEAD
,
50 CPUHP_S390_PFAULT_DEAD
,
55 CPUHP_PERCPU_CNT_DEAD
,
57 CPUHP_PAGE_ALLOC_DEAD
,
60 CPUHP_IOMMU_INTEL_DEAD
,
61 CPUHP_LUSTRE_CFS_DEAD
,
63 CPUHP_POWER_NUMA_PREPARE
,
64 CPUHP_HRTIMERS_PREPARE
,
65 CPUHP_PROFILE_PREPARE
,
70 CPUHP_MD_RAID5_PREPARE
,
72 CPUHP_CPUIDLE_COUPLED_PREPARE
,
73 CPUHP_POWERPC_PMAC_PREPARE
,
74 CPUHP_POWERPC_MMU_CTX_PREPARE
,
76 CPUHP_XEN_EVTCHN_PREPARE
,
77 CPUHP_ARM_SHMOBILE_SCU_PREPARE
,
78 CPUHP_SH_SH3X_PREPARE
,
79 CPUHP_NET_FLOW_PREPARE
,
80 CPUHP_TOPOLOGY_PREPARE
,
81 CPUHP_NET_IUCV_PREPARE
,
83 CPUHP_TRACE_RB_PREPARE
,
85 CPUHP_MM_ZSWP_MEM_PREPARE
,
86 CPUHP_MM_ZSWP_POOL_PREPARE
,
87 CPUHP_KVM_PPC_BOOK3S_PREPARE
,
90 CPUHP_MIPS_SOC_PREPARE
,
92 CPUHP_BP_PREPARE_DYN_END
= CPUHP_BP_PREPARE_DYN
+ 20,
96 CPUHP_AP_SCHED_STARTING
,
97 CPUHP_AP_RCUTREE_DYING
,
98 CPUHP_AP_IRQ_GIC_STARTING
,
99 CPUHP_AP_IRQ_HIP04_STARTING
,
100 CPUHP_AP_IRQ_ARMADA_XP_STARTING
,
101 CPUHP_AP_IRQ_BCM2836_STARTING
,
102 CPUHP_AP_IRQ_MIPS_GIC_STARTING
,
103 CPUHP_AP_ARM_MVEBU_COHERENCY
,
104 CPUHP_AP_MICROCODE_LOADER
,
105 CPUHP_AP_PERF_X86_AMD_UNCORE_STARTING
,
106 CPUHP_AP_PERF_X86_STARTING
,
107 CPUHP_AP_PERF_X86_AMD_IBS_STARTING
,
108 CPUHP_AP_PERF_X86_CQM_STARTING
,
109 CPUHP_AP_PERF_X86_CSTATE_STARTING
,
110 CPUHP_AP_PERF_XTENSA_STARTING
,
111 CPUHP_AP_PERF_METAG_STARTING
,
112 CPUHP_AP_MIPS_OP_LOONGSON3_STARTING
,
113 CPUHP_AP_ARM_SDEI_STARTING
,
114 CPUHP_AP_ARM_VFP_STARTING
,
115 CPUHP_AP_ARM64_DEBUG_MONITORS_STARTING
,
116 CPUHP_AP_PERF_ARM_HW_BREAKPOINT_STARTING
,
117 CPUHP_AP_PERF_ARM_ACPI_STARTING
,
118 CPUHP_AP_PERF_ARM_STARTING
,
119 CPUHP_AP_ARM_L2X0_STARTING
,
120 CPUHP_AP_EXYNOS4_MCT_TIMER_STARTING
,
121 CPUHP_AP_ARM_ARCH_TIMER_STARTING
,
122 CPUHP_AP_ARM_GLOBAL_TIMER_STARTING
,
123 CPUHP_AP_JCORE_TIMER_STARTING
,
124 CPUHP_AP_ARM_TWD_STARTING
,
125 CPUHP_AP_METAG_TIMER_STARTING
,
126 CPUHP_AP_QCOM_TIMER_STARTING
,
127 CPUHP_AP_ARMADA_TIMER_STARTING
,
128 CPUHP_AP_MARCO_TIMER_STARTING
,
129 CPUHP_AP_MIPS_GIC_TIMER_STARTING
,
130 CPUHP_AP_ARC_TIMER_STARTING
,
131 CPUHP_AP_KVM_STARTING
,
132 CPUHP_AP_KVM_ARM_VGIC_INIT_STARTING
,
133 CPUHP_AP_KVM_ARM_VGIC_STARTING
,
134 CPUHP_AP_KVM_ARM_TIMER_STARTING
,
135 /* Must be the last timer callback */
136 CPUHP_AP_DUMMY_TIMER_STARTING
,
137 CPUHP_AP_ARM_XEN_STARTING
,
138 CPUHP_AP_ARM_CORESIGHT_STARTING
,
139 CPUHP_AP_ARM64_ISNDEP_STARTING
,
140 CPUHP_AP_SMPCFD_DYING
,
141 CPUHP_AP_X86_TBOOT_DYING
,
144 CPUHP_AP_ONLINE_IDLE
,
145 CPUHP_AP_SMPBOOT_THREADS
,
146 CPUHP_AP_X86_VDSO_VMA_ONLINE
,
147 CPUHP_AP_IRQ_AFFINITY_ONLINE
,
148 CPUHP_AP_PERF_ONLINE
,
149 CPUHP_AP_PERF_X86_ONLINE
,
150 CPUHP_AP_PERF_X86_UNCORE_ONLINE
,
151 CPUHP_AP_PERF_X86_AMD_UNCORE_ONLINE
,
152 CPUHP_AP_PERF_X86_AMD_POWER_ONLINE
,
153 CPUHP_AP_PERF_X86_RAPL_ONLINE
,
154 CPUHP_AP_PERF_X86_CQM_ONLINE
,
155 CPUHP_AP_PERF_X86_CSTATE_ONLINE
,
156 CPUHP_AP_PERF_S390_CF_ONLINE
,
157 CPUHP_AP_PERF_S390_SF_ONLINE
,
158 CPUHP_AP_PERF_ARM_CCI_ONLINE
,
159 CPUHP_AP_PERF_ARM_CCN_ONLINE
,
160 CPUHP_AP_PERF_ARM_HISI_DDRC_ONLINE
,
161 CPUHP_AP_PERF_ARM_HISI_HHA_ONLINE
,
162 CPUHP_AP_PERF_ARM_HISI_L3_ONLINE
,
163 CPUHP_AP_PERF_ARM_L2X0_ONLINE
,
164 CPUHP_AP_PERF_ARM_QCOM_L2_ONLINE
,
165 CPUHP_AP_PERF_ARM_QCOM_L3_ONLINE
,
166 CPUHP_AP_PERF_ARM_CAVIUM_TX2_UNCORE_ONLINE
,
167 CPUHP_AP_PERF_POWERPC_NEST_IMC_ONLINE
,
168 CPUHP_AP_PERF_POWERPC_CORE_IMC_ONLINE
,
169 CPUHP_AP_PERF_POWERPC_THREAD_IMC_ONLINE
,
170 CPUHP_AP_WORKQUEUE_ONLINE
,
171 CPUHP_AP_RCUTREE_ONLINE
,
172 CPUHP_AP_BASE_CACHEINFO_ONLINE
,
174 CPUHP_AP_ONLINE_DYN_END
= CPUHP_AP_ONLINE_DYN
+ 30,
175 CPUHP_AP_X86_HPET_ONLINE
,
176 CPUHP_AP_X86_KVM_CLK_ONLINE
,
181 int __cpuhp_setup_state(enum cpuhp_state state
, const char *name
, bool invoke
,
182 int (*startup
)(unsigned int cpu
),
183 int (*teardown
)(unsigned int cpu
), bool multi_instance
);
185 int __cpuhp_setup_state_cpuslocked(enum cpuhp_state state
, const char *name
,
187 int (*startup
)(unsigned int cpu
),
188 int (*teardown
)(unsigned int cpu
),
189 bool multi_instance
);
191 * cpuhp_setup_state - Setup hotplug state callbacks with calling the callbacks
192 * @state: The state for which the calls are installed
193 * @name: Name of the callback (will be used in debug output)
194 * @startup: startup callback function
195 * @teardown: teardown callback function
197 * Installs the callback functions and invokes the startup callback on
198 * the present cpus which have already reached the @state.
200 static inline int cpuhp_setup_state(enum cpuhp_state state
,
202 int (*startup
)(unsigned int cpu
),
203 int (*teardown
)(unsigned int cpu
))
205 return __cpuhp_setup_state(state
, name
, true, startup
, teardown
, false);
208 static inline int cpuhp_setup_state_cpuslocked(enum cpuhp_state state
,
210 int (*startup
)(unsigned int cpu
),
211 int (*teardown
)(unsigned int cpu
))
213 return __cpuhp_setup_state_cpuslocked(state
, name
, true, startup
,
218 * cpuhp_setup_state_nocalls - Setup hotplug state callbacks without calling the
220 * @state: The state for which the calls are installed
221 * @name: Name of the callback.
222 * @startup: startup callback function
223 * @teardown: teardown callback function
225 * Same as @cpuhp_setup_state except that no calls are executed are invoked
226 * during installation of this callback. NOP if SMP=n or HOTPLUG_CPU=n.
228 static inline int cpuhp_setup_state_nocalls(enum cpuhp_state state
,
230 int (*startup
)(unsigned int cpu
),
231 int (*teardown
)(unsigned int cpu
))
233 return __cpuhp_setup_state(state
, name
, false, startup
, teardown
,
237 static inline int cpuhp_setup_state_nocalls_cpuslocked(enum cpuhp_state state
,
239 int (*startup
)(unsigned int cpu
),
240 int (*teardown
)(unsigned int cpu
))
242 return __cpuhp_setup_state_cpuslocked(state
, name
, false, startup
,
247 * cpuhp_setup_state_multi - Add callbacks for multi state
248 * @state: The state for which the calls are installed
249 * @name: Name of the callback.
250 * @startup: startup callback function
251 * @teardown: teardown callback function
253 * Sets the internal multi_instance flag and prepares a state to work as a multi
254 * instance callback. No callbacks are invoked at this point. The callbacks are
255 * invoked once an instance for this state are registered via
256 * @cpuhp_state_add_instance or @cpuhp_state_add_instance_nocalls.
258 static inline int cpuhp_setup_state_multi(enum cpuhp_state state
,
260 int (*startup
)(unsigned int cpu
,
261 struct hlist_node
*node
),
262 int (*teardown
)(unsigned int cpu
,
263 struct hlist_node
*node
))
265 return __cpuhp_setup_state(state
, name
, false,
267 (void *) teardown
, true);
270 int __cpuhp_state_add_instance(enum cpuhp_state state
, struct hlist_node
*node
,
272 int __cpuhp_state_add_instance_cpuslocked(enum cpuhp_state state
,
273 struct hlist_node
*node
, bool invoke
);
276 * cpuhp_state_add_instance - Add an instance for a state and invoke startup
278 * @state: The state for which the instance is installed
279 * @node: The node for this individual state.
281 * Installs the instance for the @state and invokes the startup callback on
282 * the present cpus which have already reached the @state. The @state must have
283 * been earlier marked as multi-instance by @cpuhp_setup_state_multi.
285 static inline int cpuhp_state_add_instance(enum cpuhp_state state
,
286 struct hlist_node
*node
)
288 return __cpuhp_state_add_instance(state
, node
, true);
292 * cpuhp_state_add_instance_nocalls - Add an instance for a state without
293 * invoking the startup callback.
294 * @state: The state for which the instance is installed
295 * @node: The node for this individual state.
297 * Installs the instance for the @state The @state must have been earlier
298 * marked as multi-instance by @cpuhp_setup_state_multi.
300 static inline int cpuhp_state_add_instance_nocalls(enum cpuhp_state state
,
301 struct hlist_node
*node
)
303 return __cpuhp_state_add_instance(state
, node
, false);
307 cpuhp_state_add_instance_nocalls_cpuslocked(enum cpuhp_state state
,
308 struct hlist_node
*node
)
310 return __cpuhp_state_add_instance_cpuslocked(state
, node
, false);
313 void __cpuhp_remove_state(enum cpuhp_state state
, bool invoke
);
314 void __cpuhp_remove_state_cpuslocked(enum cpuhp_state state
, bool invoke
);
317 * cpuhp_remove_state - Remove hotplug state callbacks and invoke the teardown
318 * @state: The state for which the calls are removed
320 * Removes the callback functions and invokes the teardown callback on
321 * the present cpus which have already reached the @state.
323 static inline void cpuhp_remove_state(enum cpuhp_state state
)
325 __cpuhp_remove_state(state
, true);
329 * cpuhp_remove_state_nocalls - Remove hotplug state callbacks without invoking
331 * @state: The state for which the calls are removed
333 static inline void cpuhp_remove_state_nocalls(enum cpuhp_state state
)
335 __cpuhp_remove_state(state
, false);
338 static inline void cpuhp_remove_state_nocalls_cpuslocked(enum cpuhp_state state
)
340 __cpuhp_remove_state_cpuslocked(state
, false);
344 * cpuhp_remove_multi_state - Remove hotplug multi state callback
345 * @state: The state for which the calls are removed
347 * Removes the callback functions from a multi state. This is the reverse of
348 * cpuhp_setup_state_multi(). All instances should have been removed before
349 * invoking this function.
351 static inline void cpuhp_remove_multi_state(enum cpuhp_state state
)
353 __cpuhp_remove_state(state
, false);
356 int __cpuhp_state_remove_instance(enum cpuhp_state state
,
357 struct hlist_node
*node
, bool invoke
);
360 * cpuhp_state_remove_instance - Remove hotplug instance from state and invoke
361 * the teardown callback
362 * @state: The state from which the instance is removed
363 * @node: The node for this individual state.
365 * Removes the instance and invokes the teardown callback on the present cpus
366 * which have already reached the @state.
368 static inline int cpuhp_state_remove_instance(enum cpuhp_state state
,
369 struct hlist_node
*node
)
371 return __cpuhp_state_remove_instance(state
, node
, true);
375 * cpuhp_state_remove_instance_nocalls - Remove hotplug instance from state
376 * without invoking the reatdown callback
377 * @state: The state from which the instance is removed
378 * @node: The node for this individual state.
380 * Removes the instance without invoking the teardown callback.
382 static inline int cpuhp_state_remove_instance_nocalls(enum cpuhp_state state
,
383 struct hlist_node
*node
)
385 return __cpuhp_state_remove_instance(state
, node
, false);
389 void cpuhp_online_idle(enum cpuhp_state state
);
391 static inline void cpuhp_online_idle(enum cpuhp_state state
) { }