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
,
62 CPUHP_AP_ARM_CACHE_B15_RAC_DEAD
,
65 CPUHP_POWER_NUMA_PREPARE
,
66 CPUHP_HRTIMERS_PREPARE
,
67 CPUHP_PROFILE_PREPARE
,
72 CPUHP_MD_RAID5_PREPARE
,
74 CPUHP_CPUIDLE_COUPLED_PREPARE
,
75 CPUHP_POWERPC_PMAC_PREPARE
,
76 CPUHP_POWERPC_MMU_CTX_PREPARE
,
78 CPUHP_XEN_EVTCHN_PREPARE
,
79 CPUHP_ARM_SHMOBILE_SCU_PREPARE
,
80 CPUHP_SH_SH3X_PREPARE
,
81 CPUHP_NET_FLOW_PREPARE
,
82 CPUHP_TOPOLOGY_PREPARE
,
83 CPUHP_NET_IUCV_PREPARE
,
85 CPUHP_TRACE_RB_PREPARE
,
87 CPUHP_MM_ZSWP_MEM_PREPARE
,
88 CPUHP_MM_ZSWP_POOL_PREPARE
,
89 CPUHP_KVM_PPC_BOOK3S_PREPARE
,
92 CPUHP_MIPS_SOC_PREPARE
,
94 CPUHP_BP_PREPARE_DYN_END
= CPUHP_BP_PREPARE_DYN
+ 20,
98 CPUHP_AP_SCHED_STARTING
,
99 CPUHP_AP_RCUTREE_DYING
,
100 CPUHP_AP_CPU_PM_STARTING
,
101 CPUHP_AP_IRQ_GIC_STARTING
,
102 CPUHP_AP_IRQ_HIP04_STARTING
,
103 CPUHP_AP_IRQ_ARMADA_XP_STARTING
,
104 CPUHP_AP_IRQ_BCM2836_STARTING
,
105 CPUHP_AP_IRQ_MIPS_GIC_STARTING
,
106 CPUHP_AP_IRQ_RISCV_STARTING
,
107 CPUHP_AP_IRQ_SIFIVE_PLIC_STARTING
,
108 CPUHP_AP_ARM_MVEBU_COHERENCY
,
109 CPUHP_AP_MICROCODE_LOADER
,
110 CPUHP_AP_PERF_X86_AMD_UNCORE_STARTING
,
111 CPUHP_AP_PERF_X86_STARTING
,
112 CPUHP_AP_PERF_X86_AMD_IBS_STARTING
,
113 CPUHP_AP_PERF_X86_CQM_STARTING
,
114 CPUHP_AP_PERF_X86_CSTATE_STARTING
,
115 CPUHP_AP_PERF_XTENSA_STARTING
,
116 CPUHP_AP_MIPS_OP_LOONGSON3_STARTING
,
117 CPUHP_AP_ARM_SDEI_STARTING
,
118 CPUHP_AP_ARM_VFP_STARTING
,
119 CPUHP_AP_ARM64_DEBUG_MONITORS_STARTING
,
120 CPUHP_AP_PERF_ARM_HW_BREAKPOINT_STARTING
,
121 CPUHP_AP_PERF_ARM_ACPI_STARTING
,
122 CPUHP_AP_PERF_ARM_STARTING
,
123 CPUHP_AP_ARM_L2X0_STARTING
,
124 CPUHP_AP_EXYNOS4_MCT_TIMER_STARTING
,
125 CPUHP_AP_ARM_ARCH_TIMER_STARTING
,
126 CPUHP_AP_ARM_GLOBAL_TIMER_STARTING
,
127 CPUHP_AP_JCORE_TIMER_STARTING
,
128 CPUHP_AP_ARM_TWD_STARTING
,
129 CPUHP_AP_QCOM_TIMER_STARTING
,
130 CPUHP_AP_TEGRA_TIMER_STARTING
,
131 CPUHP_AP_ARMADA_TIMER_STARTING
,
132 CPUHP_AP_MARCO_TIMER_STARTING
,
133 CPUHP_AP_MIPS_GIC_TIMER_STARTING
,
134 CPUHP_AP_ARC_TIMER_STARTING
,
135 CPUHP_AP_RISCV_TIMER_STARTING
,
136 CPUHP_AP_CLINT_TIMER_STARTING
,
137 CPUHP_AP_CSKY_TIMER_STARTING
,
138 CPUHP_AP_HYPERV_TIMER_STARTING
,
139 CPUHP_AP_KVM_STARTING
,
140 CPUHP_AP_KVM_ARM_VGIC_INIT_STARTING
,
141 CPUHP_AP_KVM_ARM_VGIC_STARTING
,
142 CPUHP_AP_KVM_ARM_TIMER_STARTING
,
143 /* Must be the last timer callback */
144 CPUHP_AP_DUMMY_TIMER_STARTING
,
145 CPUHP_AP_ARM_XEN_STARTING
,
146 CPUHP_AP_ARM_CORESIGHT_STARTING
,
147 CPUHP_AP_ARM_CORESIGHT_CTI_STARTING
,
148 CPUHP_AP_ARM64_ISNDEP_STARTING
,
149 CPUHP_AP_SMPCFD_DYING
,
150 CPUHP_AP_X86_TBOOT_DYING
,
151 CPUHP_AP_ARM_CACHE_B15_RAC_DYING
,
154 CPUHP_AP_ONLINE_IDLE
,
155 CPUHP_AP_SCHED_WAIT_EMPTY
,
156 CPUHP_AP_SMPBOOT_THREADS
,
157 CPUHP_AP_X86_VDSO_VMA_ONLINE
,
158 CPUHP_AP_IRQ_AFFINITY_ONLINE
,
159 CPUHP_AP_BLK_MQ_ONLINE
,
160 CPUHP_AP_ARM_MVEBU_SYNC_CLOCKS
,
161 CPUHP_AP_X86_INTEL_EPB_ONLINE
,
162 CPUHP_AP_PERF_ONLINE
,
163 CPUHP_AP_PERF_X86_ONLINE
,
164 CPUHP_AP_PERF_X86_UNCORE_ONLINE
,
165 CPUHP_AP_PERF_X86_AMD_UNCORE_ONLINE
,
166 CPUHP_AP_PERF_X86_AMD_POWER_ONLINE
,
167 CPUHP_AP_PERF_X86_RAPL_ONLINE
,
168 CPUHP_AP_PERF_X86_CQM_ONLINE
,
169 CPUHP_AP_PERF_X86_CSTATE_ONLINE
,
170 CPUHP_AP_PERF_S390_CF_ONLINE
,
171 CPUHP_AP_PERF_S390_SF_ONLINE
,
172 CPUHP_AP_PERF_ARM_CCI_ONLINE
,
173 CPUHP_AP_PERF_ARM_CCN_ONLINE
,
174 CPUHP_AP_PERF_ARM_HISI_DDRC_ONLINE
,
175 CPUHP_AP_PERF_ARM_HISI_HHA_ONLINE
,
176 CPUHP_AP_PERF_ARM_HISI_L3_ONLINE
,
177 CPUHP_AP_PERF_ARM_L2X0_ONLINE
,
178 CPUHP_AP_PERF_ARM_QCOM_L2_ONLINE
,
179 CPUHP_AP_PERF_ARM_QCOM_L3_ONLINE
,
180 CPUHP_AP_PERF_ARM_APM_XGENE_ONLINE
,
181 CPUHP_AP_PERF_ARM_CAVIUM_TX2_UNCORE_ONLINE
,
182 CPUHP_AP_PERF_POWERPC_NEST_IMC_ONLINE
,
183 CPUHP_AP_PERF_POWERPC_CORE_IMC_ONLINE
,
184 CPUHP_AP_PERF_POWERPC_THREAD_IMC_ONLINE
,
185 CPUHP_AP_PERF_POWERPC_TRACE_IMC_ONLINE
,
186 CPUHP_AP_PERF_POWERPC_HV_24x7_ONLINE
,
187 CPUHP_AP_PERF_POWERPC_HV_GPCI_ONLINE
,
188 CPUHP_AP_WATCHDOG_ONLINE
,
189 CPUHP_AP_WORKQUEUE_ONLINE
,
190 CPUHP_AP_RCUTREE_ONLINE
,
191 CPUHP_AP_BASE_CACHEINFO_ONLINE
,
193 CPUHP_AP_ONLINE_DYN_END
= CPUHP_AP_ONLINE_DYN
+ 30,
194 CPUHP_AP_X86_HPET_ONLINE
,
195 CPUHP_AP_X86_KVM_CLK_ONLINE
,
200 int __cpuhp_setup_state(enum cpuhp_state state
, const char *name
, bool invoke
,
201 int (*startup
)(unsigned int cpu
),
202 int (*teardown
)(unsigned int cpu
), bool multi_instance
);
204 int __cpuhp_setup_state_cpuslocked(enum cpuhp_state state
, const char *name
,
206 int (*startup
)(unsigned int cpu
),
207 int (*teardown
)(unsigned int cpu
),
208 bool multi_instance
);
210 * cpuhp_setup_state - Setup hotplug state callbacks with calling the callbacks
211 * @state: The state for which the calls are installed
212 * @name: Name of the callback (will be used in debug output)
213 * @startup: startup callback function
214 * @teardown: teardown callback function
216 * Installs the callback functions and invokes the startup callback on
217 * the present cpus which have already reached the @state.
219 static inline int cpuhp_setup_state(enum cpuhp_state state
,
221 int (*startup
)(unsigned int cpu
),
222 int (*teardown
)(unsigned int cpu
))
224 return __cpuhp_setup_state(state
, name
, true, startup
, teardown
, false);
227 static inline int cpuhp_setup_state_cpuslocked(enum cpuhp_state state
,
229 int (*startup
)(unsigned int cpu
),
230 int (*teardown
)(unsigned int cpu
))
232 return __cpuhp_setup_state_cpuslocked(state
, name
, true, startup
,
237 * cpuhp_setup_state_nocalls - Setup hotplug state callbacks without calling the
239 * @state: The state for which the calls are installed
240 * @name: Name of the callback.
241 * @startup: startup callback function
242 * @teardown: teardown callback function
244 * Same as @cpuhp_setup_state except that no calls are executed are invoked
245 * during installation of this callback. NOP if SMP=n or HOTPLUG_CPU=n.
247 static inline int cpuhp_setup_state_nocalls(enum cpuhp_state state
,
249 int (*startup
)(unsigned int cpu
),
250 int (*teardown
)(unsigned int cpu
))
252 return __cpuhp_setup_state(state
, name
, false, startup
, teardown
,
256 static inline int cpuhp_setup_state_nocalls_cpuslocked(enum cpuhp_state state
,
258 int (*startup
)(unsigned int cpu
),
259 int (*teardown
)(unsigned int cpu
))
261 return __cpuhp_setup_state_cpuslocked(state
, name
, false, startup
,
266 * cpuhp_setup_state_multi - Add callbacks for multi state
267 * @state: The state for which the calls are installed
268 * @name: Name of the callback.
269 * @startup: startup callback function
270 * @teardown: teardown callback function
272 * Sets the internal multi_instance flag and prepares a state to work as a multi
273 * instance callback. No callbacks are invoked at this point. The callbacks are
274 * invoked once an instance for this state are registered via
275 * @cpuhp_state_add_instance or @cpuhp_state_add_instance_nocalls.
277 static inline int cpuhp_setup_state_multi(enum cpuhp_state state
,
279 int (*startup
)(unsigned int cpu
,
280 struct hlist_node
*node
),
281 int (*teardown
)(unsigned int cpu
,
282 struct hlist_node
*node
))
284 return __cpuhp_setup_state(state
, name
, false,
286 (void *) teardown
, true);
289 int __cpuhp_state_add_instance(enum cpuhp_state state
, struct hlist_node
*node
,
291 int __cpuhp_state_add_instance_cpuslocked(enum cpuhp_state state
,
292 struct hlist_node
*node
, bool invoke
);
295 * cpuhp_state_add_instance - Add an instance for a state and invoke startup
297 * @state: The state for which the instance is installed
298 * @node: The node for this individual state.
300 * Installs the instance for the @state and invokes the startup callback on
301 * the present cpus which have already reached the @state. The @state must have
302 * been earlier marked as multi-instance by @cpuhp_setup_state_multi.
304 static inline int cpuhp_state_add_instance(enum cpuhp_state state
,
305 struct hlist_node
*node
)
307 return __cpuhp_state_add_instance(state
, node
, true);
311 * cpuhp_state_add_instance_nocalls - Add an instance for a state without
312 * invoking the startup callback.
313 * @state: The state for which the instance is installed
314 * @node: The node for this individual state.
316 * Installs the instance for the @state The @state must have been earlier
317 * marked as multi-instance by @cpuhp_setup_state_multi.
319 static inline int cpuhp_state_add_instance_nocalls(enum cpuhp_state state
,
320 struct hlist_node
*node
)
322 return __cpuhp_state_add_instance(state
, node
, false);
326 cpuhp_state_add_instance_nocalls_cpuslocked(enum cpuhp_state state
,
327 struct hlist_node
*node
)
329 return __cpuhp_state_add_instance_cpuslocked(state
, node
, false);
332 void __cpuhp_remove_state(enum cpuhp_state state
, bool invoke
);
333 void __cpuhp_remove_state_cpuslocked(enum cpuhp_state state
, bool invoke
);
336 * cpuhp_remove_state - Remove hotplug state callbacks and invoke the teardown
337 * @state: The state for which the calls are removed
339 * Removes the callback functions and invokes the teardown callback on
340 * the present cpus which have already reached the @state.
342 static inline void cpuhp_remove_state(enum cpuhp_state state
)
344 __cpuhp_remove_state(state
, true);
348 * cpuhp_remove_state_nocalls - Remove hotplug state callbacks without invoking
350 * @state: The state for which the calls are removed
352 static inline void cpuhp_remove_state_nocalls(enum cpuhp_state state
)
354 __cpuhp_remove_state(state
, false);
357 static inline void cpuhp_remove_state_nocalls_cpuslocked(enum cpuhp_state state
)
359 __cpuhp_remove_state_cpuslocked(state
, false);
363 * cpuhp_remove_multi_state - Remove hotplug multi state callback
364 * @state: The state for which the calls are removed
366 * Removes the callback functions from a multi state. This is the reverse of
367 * cpuhp_setup_state_multi(). All instances should have been removed before
368 * invoking this function.
370 static inline void cpuhp_remove_multi_state(enum cpuhp_state state
)
372 __cpuhp_remove_state(state
, false);
375 int __cpuhp_state_remove_instance(enum cpuhp_state state
,
376 struct hlist_node
*node
, bool invoke
);
379 * cpuhp_state_remove_instance - Remove hotplug instance from state and invoke
380 * the teardown callback
381 * @state: The state from which the instance is removed
382 * @node: The node for this individual state.
384 * Removes the instance and invokes the teardown callback on the present cpus
385 * which have already reached the @state.
387 static inline int cpuhp_state_remove_instance(enum cpuhp_state state
,
388 struct hlist_node
*node
)
390 return __cpuhp_state_remove_instance(state
, node
, true);
394 * cpuhp_state_remove_instance_nocalls - Remove hotplug instance from state
395 * without invoking the reatdown callback
396 * @state: The state from which the instance is removed
397 * @node: The node for this individual state.
399 * Removes the instance without invoking the teardown callback.
401 static inline int cpuhp_state_remove_instance_nocalls(enum cpuhp_state state
,
402 struct hlist_node
*node
)
404 return __cpuhp_state_remove_instance(state
, node
, false);
408 void cpuhp_online_idle(enum cpuhp_state state
);
410 static inline void cpuhp_online_idle(enum cpuhp_state state
) { }