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cff7d378 TG |
1 | #ifndef __CPUHOTPLUG_H |
2 | #define __CPUHOTPLUG_H | |
3 | ||
6cfeaf51 PB |
4 | #include <linux/types.h> |
5 | ||
cff7d378 TG |
6 | enum cpuhp_state { |
7 | CPUHP_OFFLINE, | |
8 | CPUHP_CREATE_THREADS, | |
00e16c3d | 9 | CPUHP_PERF_PREPARE, |
95ca792c | 10 | CPUHP_PERF_X86_PREPARE, |
1a246b9f | 11 | CPUHP_PERF_X86_UNCORE_PREP, |
96b2bd38 | 12 | CPUHP_PERF_X86_AMD_UNCORE_PREP, |
8b5b773d | 13 | CPUHP_PERF_X86_RAPL_PREP, |
a409f5ee | 14 | CPUHP_PERF_BFIN, |
57ecde42 | 15 | CPUHP_PERF_POWER, |
e3cfce17 | 16 | CPUHP_PERF_SUPERH, |
48d7f6c7 | 17 | CPUHP_X86_HPET_DEAD, |
148b9e2a | 18 | CPUHP_X86_APB_DEAD, |
8017c279 | 19 | CPUHP_VIRT_NET_DEAD, |
a96a87bf | 20 | CPUHP_SLUB_DEAD, |
1d7ac6ae | 21 | CPUHP_MM_WRITEBACK_DEAD, |
c4544dbc | 22 | CPUHP_SOFTIRQ_DEAD, |
84a3f4db | 23 | CPUHP_NET_MVNETA_DEAD, |
529351fd | 24 | CPUHP_CPUIDLE_DEAD, |
c23a7266 | 25 | CPUHP_ARM64_FPSIMD_DEAD, |
a4fa9cc2 | 26 | CPUHP_ARM_OMAP_WAKE_DEAD, |
75e12ed6 | 27 | CPUHP_IRQ_POLL_DEAD, |
9a659f43 | 28 | CPUHP_BLOCK_SOFTIRQ_DEAD, |
8904f5a5 | 29 | CPUHP_VIRT_SCSI_DEAD, |
64f3bf2f | 30 | CPUHP_ACPI_CPUDRV_DEAD, |
84c9ceef | 31 | CPUHP_S390_PFAULT_DEAD, |
e2a738f7 | 32 | CPUHP_BLK_MQ_DEAD, |
fc4d24c9 | 33 | CPUHP_FS_BUFF_DEAD, |
90b14889 | 34 | CPUHP_PRINTK_DEAD, |
7ee681b2 | 35 | CPUHP_WORKQUEUE_PREP, |
bdab88e0 | 36 | CPUHP_POWER_NUMA_PREPARE, |
27590dc1 | 37 | CPUHP_HRTIMERS_PREPARE, |
e722d8da | 38 | CPUHP_PROFILE_PREPARE, |
6b2c2847 | 39 | CPUHP_X2APIC_PREPARE, |
31487f83 | 40 | CPUHP_SMPCFD_PREPARE, |
e6d4989a | 41 | CPUHP_RELAY_PREPARE, |
6731d4f1 | 42 | CPUHP_SLAB_PREPARE, |
29c6d1bb | 43 | CPUHP_MD_RAID5_PREPARE, |
4df83742 | 44 | CPUHP_RCUTREE_PREP, |
dfc616d8 | 45 | CPUHP_CPUIDLE_COUPLED_PREPARE, |
68e694dc | 46 | CPUHP_POWERPC_PMAC_PREPARE, |
da3ed651 | 47 | CPUHP_POWERPC_MMU_CTX_PREPARE, |
4d737042 | 48 | CPUHP_XEN_PREPARE, |
c8761e20 | 49 | CPUHP_XEN_EVTCHN_PREPARE, |
cff7d378 | 50 | CPUHP_NOTIFY_PREPARE, |
657ebf7a | 51 | CPUHP_ARM_SHMOBILE_SCU_PREPARE, |
51533233 | 52 | CPUHP_SH_SH3X_PREPARE, |
e2a738f7 | 53 | CPUHP_BLK_MQ_PREPARE, |
4fae16df | 54 | CPUHP_TIMERS_DEAD, |
8c58898b | 55 | CPUHP_NOTF_ERR_INJ_PREPARE, |
dd6d7c6f | 56 | CPUHP_MIPS_SOC_PREPARE, |
cff7d378 | 57 | CPUHP_BRINGUP_CPU, |
e69aab13 | 58 | CPUHP_AP_IDLE_DEAD, |
4baa0afc | 59 | CPUHP_AP_OFFLINE, |
9cf7243d | 60 | CPUHP_AP_SCHED_STARTING, |
4df83742 | 61 | CPUHP_AP_RCUTREE_DYING, |
93131f7a | 62 | CPUHP_AP_IRQ_GIC_STARTING, |
6670a6d8 | 63 | CPUHP_AP_IRQ_GICV3_STARTING, |
6c034d17 | 64 | CPUHP_AP_IRQ_HIP04_STARTING, |
cb5ff2d2 RC |
65 | CPUHP_AP_IRQ_ARMADA_XP_STARTING, |
66 | CPUHP_AP_IRQ_ARMADA_CASC_STARTING, | |
7ca04bc2 | 67 | CPUHP_AP_IRQ_BCM2836_STARTING, |
7fbbaebf | 68 | CPUHP_AP_ARM_MVEBU_COHERENCY, |
1a246b9f | 69 | CPUHP_AP_PERF_X86_UNCORE_STARTING, |
96b2bd38 | 70 | CPUHP_AP_PERF_X86_AMD_UNCORE_STARTING, |
95ca792c | 71 | CPUHP_AP_PERF_X86_STARTING, |
9744f7b7 | 72 | CPUHP_AP_PERF_X86_AMD_IBS_STARTING, |
f0704827 | 73 | CPUHP_AP_PERF_X86_CQM_STARTING, |
77c34ef1 | 74 | CPUHP_AP_PERF_X86_CSTATE_STARTING, |
25a77b55 | 75 | CPUHP_AP_PERF_XTENSA_STARTING, |
04d045a6 | 76 | CPUHP_AP_PERF_METAG_STARTING, |
65264e3b | 77 | CPUHP_AP_MIPS_OP_LOONGSON3_STARTING, |
e5b61baf | 78 | CPUHP_AP_ARM_VFP_STARTING, |
e937dd57 | 79 | CPUHP_AP_ARM64_DEBUG_MONITORS_STARTING, |
d7a83d12 | 80 | CPUHP_AP_PERF_ARM_HW_BREAKPOINT_STARTING, |
7d88eb69 | 81 | CPUHP_AP_PERF_ARM_STARTING, |
9eeb2264 | 82 | CPUHP_AP_ARM_L2X0_STARTING, |
7e86e8bd | 83 | CPUHP_AP_ARM_ARCH_TIMER_STARTING, |
b8a12296 | 84 | CPUHP_AP_ARM_GLOBAL_TIMER_STARTING, |
00c1d17a | 85 | CPUHP_AP_DUMMY_TIMER_STARTING, |
9995f4f1 | 86 | CPUHP_AP_JCORE_TIMER_STARTING, |
d11b3a60 | 87 | CPUHP_AP_EXYNOS4_MCT_TIMER_STARTING, |
26b87688 | 88 | CPUHP_AP_ARM_TWD_STARTING, |
31e8e5db | 89 | CPUHP_AP_METAG_TIMER_STARTING, |
b0404165 | 90 | CPUHP_AP_QCOM_TIMER_STARTING, |
2c48fef7 | 91 | CPUHP_AP_ARMADA_TIMER_STARTING, |
eb0a9d8c | 92 | CPUHP_AP_MARCO_TIMER_STARTING, |
2dab9093 | 93 | CPUHP_AP_MIPS_GIC_TIMER_STARTING, |
ecd8081f | 94 | CPUHP_AP_ARC_TIMER_STARTING, |
8c18b2d2 | 95 | CPUHP_AP_KVM_STARTING, |
15d7e3d3 | 96 | CPUHP_AP_KVM_ARM_VGIC_INIT_STARTING, |
42ec50b5 | 97 | CPUHP_AP_KVM_ARM_VGIC_STARTING, |
b3c9950a | 98 | CPUHP_AP_KVM_ARM_TIMER_STARTING, |
4761adb6 | 99 | CPUHP_AP_ARM_XEN_STARTING, |
2b5283d1 | 100 | CPUHP_AP_ARM_CORESIGHT_STARTING, |
58eb457b | 101 | CPUHP_AP_ARM_CORESIGHT4_STARTING, |
27c01a8c | 102 | CPUHP_AP_ARM64_ISNDEP_STARTING, |
31487f83 | 103 | CPUHP_AP_SMPCFD_DYING, |
ae6a8a2e | 104 | CPUHP_AP_X86_TBOOT_DYING, |
4baa0afc TG |
105 | CPUHP_AP_ONLINE, |
106 | CPUHP_TEARDOWN_CPU, | |
fc6d73d6 | 107 | CPUHP_AP_ONLINE_IDLE, |
1cf4f629 | 108 | CPUHP_AP_SMPBOOT_THREADS, |
07d36c9e | 109 | CPUHP_AP_X86_VDSO_VMA_ONLINE, |
00e16c3d | 110 | CPUHP_AP_PERF_ONLINE, |
95ca792c | 111 | CPUHP_AP_PERF_X86_ONLINE, |
1a246b9f | 112 | CPUHP_AP_PERF_X86_UNCORE_ONLINE, |
96b2bd38 | 113 | CPUHP_AP_PERF_X86_AMD_UNCORE_ONLINE, |
c6a84daa | 114 | CPUHP_AP_PERF_X86_AMD_POWER_ONLINE, |
8b5b773d | 115 | CPUHP_AP_PERF_X86_RAPL_ONLINE, |
f0704827 | 116 | CPUHP_AP_PERF_X86_CQM_ONLINE, |
77c34ef1 | 117 | CPUHP_AP_PERF_X86_CSTATE_ONLINE, |
4f0f8217 | 118 | CPUHP_AP_PERF_S390_CF_ONLINE, |
e3d617fe | 119 | CPUHP_AP_PERF_S390_SF_ONLINE, |
28c94843 | 120 | CPUHP_AP_PERF_ARM_CCI_ONLINE, |
fdc15a36 | 121 | CPUHP_AP_PERF_ARM_CCN_ONLINE, |
b828f960 | 122 | CPUHP_AP_PERF_ARM_L2X0_ONLINE, |
7ee681b2 | 123 | CPUHP_AP_WORKQUEUE_ONLINE, |
4df83742 | 124 | CPUHP_AP_RCUTREE_ONLINE, |
1cf4f629 TG |
125 | CPUHP_AP_NOTIFY_ONLINE, |
126 | CPUHP_AP_ONLINE_DYN, | |
127 | CPUHP_AP_ONLINE_DYN_END = CPUHP_AP_ONLINE_DYN + 30, | |
48d7f6c7 | 128 | CPUHP_AP_X86_HPET_ONLINE, |
251a5fd6 | 129 | CPUHP_AP_X86_KVM_CLK_ONLINE, |
aaddd7d1 | 130 | CPUHP_AP_ACTIVE, |
cff7d378 TG |
131 | CPUHP_ONLINE, |
132 | }; | |
133 | ||
5b7aa87e TG |
134 | int __cpuhp_setup_state(enum cpuhp_state state, const char *name, bool invoke, |
135 | int (*startup)(unsigned int cpu), | |
cf392d10 | 136 | int (*teardown)(unsigned int cpu), bool multi_instance); |
5b7aa87e TG |
137 | |
138 | /** | |
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 | |
144 | * | |
145 | * Installs the callback functions and invokes the startup callback on | |
146 | * the present cpus which have already reached the @state. | |
147 | */ | |
148 | static inline int cpuhp_setup_state(enum cpuhp_state state, | |
149 | const char *name, | |
150 | int (*startup)(unsigned int cpu), | |
151 | int (*teardown)(unsigned int cpu)) | |
152 | { | |
cf392d10 | 153 | return __cpuhp_setup_state(state, name, true, startup, teardown, false); |
5b7aa87e TG |
154 | } |
155 | ||
156 | /** | |
157 | * cpuhp_setup_state_nocalls - Setup hotplug state callbacks without calling the | |
158 | * callbacks | |
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 | |
163 | * | |
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. | |
166 | */ | |
167 | static inline int cpuhp_setup_state_nocalls(enum cpuhp_state state, | |
168 | const char *name, | |
169 | int (*startup)(unsigned int cpu), | |
170 | int (*teardown)(unsigned int cpu)) | |
171 | { | |
cf392d10 TG |
172 | return __cpuhp_setup_state(state, name, false, startup, teardown, |
173 | false); | |
174 | } | |
175 | ||
176 | /** | |
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 | |
182 | * | |
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. | |
187 | */ | |
188 | static inline int cpuhp_setup_state_multi(enum cpuhp_state state, | |
189 | const char *name, | |
190 | int (*startup)(unsigned int cpu, | |
191 | struct hlist_node *node), | |
192 | int (*teardown)(unsigned int cpu, | |
193 | struct hlist_node *node)) | |
194 | { | |
195 | return __cpuhp_setup_state(state, name, false, | |
196 | (void *) startup, | |
197 | (void *) teardown, true); | |
198 | } | |
199 | ||
200 | int __cpuhp_state_add_instance(enum cpuhp_state state, struct hlist_node *node, | |
201 | bool invoke); | |
202 | ||
203 | /** | |
204 | * cpuhp_state_add_instance - Add an instance for a state and invoke startup | |
205 | * callback. | |
206 | * @state: The state for which the instance is installed | |
207 | * @node: The node for this individual state. | |
208 | * | |
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. | |
212 | */ | |
213 | static inline int cpuhp_state_add_instance(enum cpuhp_state state, | |
214 | struct hlist_node *node) | |
215 | { | |
216 | return __cpuhp_state_add_instance(state, node, true); | |
217 | } | |
218 | ||
219 | /** | |
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. | |
224 | * | |
225 | * Installs the instance for the @state The @state must have been earlier | |
226 | * marked as multi-instance by @cpuhp_setup_state_multi. | |
227 | */ | |
228 | static inline int cpuhp_state_add_instance_nocalls(enum cpuhp_state state, | |
229 | struct hlist_node *node) | |
230 | { | |
231 | return __cpuhp_state_add_instance(state, node, false); | |
5b7aa87e TG |
232 | } |
233 | ||
234 | void __cpuhp_remove_state(enum cpuhp_state state, bool invoke); | |
235 | ||
236 | /** | |
237 | * cpuhp_remove_state - Remove hotplug state callbacks and invoke the teardown | |
238 | * @state: The state for which the calls are removed | |
239 | * | |
240 | * Removes the callback functions and invokes the teardown callback on | |
241 | * the present cpus which have already reached the @state. | |
242 | */ | |
243 | static inline void cpuhp_remove_state(enum cpuhp_state state) | |
244 | { | |
245 | __cpuhp_remove_state(state, true); | |
246 | } | |
247 | ||
248 | /** | |
249 | * cpuhp_remove_state_nocalls - Remove hotplug state callbacks without invoking | |
250 | * teardown | |
251 | * @state: The state for which the calls are removed | |
252 | */ | |
253 | static inline void cpuhp_remove_state_nocalls(enum cpuhp_state state) | |
254 | { | |
255 | __cpuhp_remove_state(state, false); | |
256 | } | |
257 | ||
cf392d10 TG |
258 | /** |
259 | * cpuhp_remove_multi_state - Remove hotplug multi state callback | |
260 | * @state: The state for which the calls are removed | |
261 | * | |
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. | |
265 | */ | |
266 | static inline void cpuhp_remove_multi_state(enum cpuhp_state state) | |
267 | { | |
268 | __cpuhp_remove_state(state, false); | |
269 | } | |
270 | ||
271 | int __cpuhp_state_remove_instance(enum cpuhp_state state, | |
272 | struct hlist_node *node, bool invoke); | |
273 | ||
274 | /** | |
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. | |
279 | * | |
280 | * Removes the instance and invokes the teardown callback on the present cpus | |
281 | * which have already reached the @state. | |
282 | */ | |
283 | static inline int cpuhp_state_remove_instance(enum cpuhp_state state, | |
284 | struct hlist_node *node) | |
285 | { | |
286 | return __cpuhp_state_remove_instance(state, node, true); | |
287 | } | |
288 | ||
289 | /** | |
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. | |
294 | * | |
295 | * Removes the instance without invoking the teardown callback. | |
296 | */ | |
297 | static inline int cpuhp_state_remove_instance_nocalls(enum cpuhp_state state, | |
298 | struct hlist_node *node) | |
299 | { | |
300 | return __cpuhp_state_remove_instance(state, node, false); | |
301 | } | |
302 | ||
8df3e07e TG |
303 | #ifdef CONFIG_SMP |
304 | void cpuhp_online_idle(enum cpuhp_state state); | |
305 | #else | |
306 | static inline void cpuhp_online_idle(enum cpuhp_state state) { } | |
307 | #endif | |
308 | ||
cff7d378 | 309 | #endif |