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cff7d378 TG |
1 | #ifndef __CPUHOTPLUG_H |
2 | #define __CPUHOTPLUG_H | |
3 | ||
4 | enum cpuhp_state { | |
5 | CPUHP_OFFLINE, | |
6 | CPUHP_CREATE_THREADS, | |
00e16c3d | 7 | CPUHP_PERF_PREPARE, |
95ca792c | 8 | CPUHP_PERF_X86_PREPARE, |
1a246b9f | 9 | CPUHP_PERF_X86_UNCORE_PREP, |
96b2bd38 | 10 | CPUHP_PERF_X86_AMD_UNCORE_PREP, |
8b5b773d | 11 | CPUHP_PERF_X86_RAPL_PREP, |
a409f5ee | 12 | CPUHP_PERF_BFIN, |
57ecde42 | 13 | CPUHP_PERF_POWER, |
e3cfce17 | 14 | CPUHP_PERF_SUPERH, |
48d7f6c7 | 15 | CPUHP_X86_HPET_DEAD, |
148b9e2a | 16 | CPUHP_X86_APB_DEAD, |
8017c279 | 17 | CPUHP_VIRT_NET_DEAD, |
a96a87bf | 18 | CPUHP_SLUB_DEAD, |
1d7ac6ae | 19 | CPUHP_MM_WRITEBACK_DEAD, |
c4544dbc | 20 | CPUHP_SOFTIRQ_DEAD, |
84a3f4db | 21 | CPUHP_NET_MVNETA_DEAD, |
7ee681b2 | 22 | CPUHP_WORKQUEUE_PREP, |
bdab88e0 | 23 | CPUHP_POWER_NUMA_PREPARE, |
27590dc1 | 24 | CPUHP_HRTIMERS_PREPARE, |
e722d8da | 25 | CPUHP_PROFILE_PREPARE, |
6b2c2847 | 26 | CPUHP_X2APIC_PREPARE, |
31487f83 | 27 | CPUHP_SMPCFD_PREPARE, |
e6d4989a | 28 | CPUHP_RELAY_PREPARE, |
6731d4f1 | 29 | CPUHP_SLAB_PREPARE, |
29c6d1bb | 30 | CPUHP_MD_RAID5_PREPARE, |
4df83742 | 31 | CPUHP_RCUTREE_PREP, |
cff7d378 | 32 | CPUHP_NOTIFY_PREPARE, |
4fae16df | 33 | CPUHP_TIMERS_DEAD, |
cff7d378 | 34 | CPUHP_BRINGUP_CPU, |
e69aab13 | 35 | CPUHP_AP_IDLE_DEAD, |
4baa0afc | 36 | CPUHP_AP_OFFLINE, |
9cf7243d | 37 | CPUHP_AP_SCHED_STARTING, |
4df83742 | 38 | CPUHP_AP_RCUTREE_DYING, |
93131f7a | 39 | CPUHP_AP_IRQ_GIC_STARTING, |
6670a6d8 | 40 | CPUHP_AP_IRQ_GICV3_STARTING, |
6c034d17 | 41 | CPUHP_AP_IRQ_HIP04_STARTING, |
cb5ff2d2 RC |
42 | CPUHP_AP_IRQ_ARMADA_XP_STARTING, |
43 | CPUHP_AP_IRQ_ARMADA_CASC_STARTING, | |
7ca04bc2 | 44 | CPUHP_AP_IRQ_BCM2836_STARTING, |
7fbbaebf | 45 | CPUHP_AP_ARM_MVEBU_COHERENCY, |
1a246b9f | 46 | CPUHP_AP_PERF_X86_UNCORE_STARTING, |
96b2bd38 | 47 | CPUHP_AP_PERF_X86_AMD_UNCORE_STARTING, |
95ca792c | 48 | CPUHP_AP_PERF_X86_STARTING, |
9744f7b7 | 49 | CPUHP_AP_PERF_X86_AMD_IBS_STARTING, |
f0704827 | 50 | CPUHP_AP_PERF_X86_CQM_STARTING, |
77c34ef1 | 51 | CPUHP_AP_PERF_X86_CSTATE_STARTING, |
25a77b55 | 52 | CPUHP_AP_PERF_XTENSA_STARTING, |
04d045a6 | 53 | CPUHP_AP_PERF_METAG_STARTING, |
65264e3b | 54 | CPUHP_AP_MIPS_OP_LOONGSON3_STARTING, |
e5b61baf | 55 | CPUHP_AP_ARM_VFP_STARTING, |
7d88eb69 | 56 | CPUHP_AP_PERF_ARM_STARTING, |
9eeb2264 | 57 | CPUHP_AP_ARM_L2X0_STARTING, |
7e86e8bd | 58 | CPUHP_AP_ARM_ARCH_TIMER_STARTING, |
b8a12296 | 59 | CPUHP_AP_ARM_GLOBAL_TIMER_STARTING, |
00c1d17a | 60 | CPUHP_AP_DUMMY_TIMER_STARTING, |
d11b3a60 | 61 | CPUHP_AP_EXYNOS4_MCT_TIMER_STARTING, |
26b87688 | 62 | CPUHP_AP_ARM_TWD_STARTING, |
31e8e5db | 63 | CPUHP_AP_METAG_TIMER_STARTING, |
b0404165 | 64 | CPUHP_AP_QCOM_TIMER_STARTING, |
2c48fef7 | 65 | CPUHP_AP_ARMADA_TIMER_STARTING, |
eb0a9d8c | 66 | CPUHP_AP_MARCO_TIMER_STARTING, |
2dab9093 | 67 | CPUHP_AP_MIPS_GIC_TIMER_STARTING, |
ecd8081f | 68 | CPUHP_AP_ARC_TIMER_STARTING, |
8c18b2d2 | 69 | CPUHP_AP_KVM_STARTING, |
15d7e3d3 | 70 | CPUHP_AP_KVM_ARM_VGIC_INIT_STARTING, |
42ec50b5 | 71 | CPUHP_AP_KVM_ARM_VGIC_STARTING, |
b3c9950a | 72 | CPUHP_AP_KVM_ARM_TIMER_STARTING, |
4761adb6 | 73 | CPUHP_AP_ARM_XEN_STARTING, |
2b5283d1 | 74 | CPUHP_AP_ARM_CORESIGHT_STARTING, |
58eb457b | 75 | CPUHP_AP_ARM_CORESIGHT4_STARTING, |
27c01a8c | 76 | CPUHP_AP_ARM64_ISNDEP_STARTING, |
31487f83 | 77 | CPUHP_AP_SMPCFD_DYING, |
ae6a8a2e | 78 | CPUHP_AP_X86_TBOOT_DYING, |
4baa0afc TG |
79 | CPUHP_AP_ONLINE, |
80 | CPUHP_TEARDOWN_CPU, | |
fc6d73d6 | 81 | CPUHP_AP_ONLINE_IDLE, |
1cf4f629 | 82 | CPUHP_AP_SMPBOOT_THREADS, |
07d36c9e | 83 | CPUHP_AP_X86_VDSO_VMA_ONLINE, |
00e16c3d | 84 | CPUHP_AP_PERF_ONLINE, |
95ca792c | 85 | CPUHP_AP_PERF_X86_ONLINE, |
1a246b9f | 86 | CPUHP_AP_PERF_X86_UNCORE_ONLINE, |
96b2bd38 | 87 | CPUHP_AP_PERF_X86_AMD_UNCORE_ONLINE, |
c6a84daa | 88 | CPUHP_AP_PERF_X86_AMD_POWER_ONLINE, |
8b5b773d | 89 | CPUHP_AP_PERF_X86_RAPL_ONLINE, |
f0704827 | 90 | CPUHP_AP_PERF_X86_CQM_ONLINE, |
77c34ef1 | 91 | CPUHP_AP_PERF_X86_CSTATE_ONLINE, |
4f0f8217 | 92 | CPUHP_AP_PERF_S390_CF_ONLINE, |
e3d617fe | 93 | CPUHP_AP_PERF_S390_SF_ONLINE, |
28c94843 | 94 | CPUHP_AP_PERF_ARM_CCI_ONLINE, |
fdc15a36 | 95 | CPUHP_AP_PERF_ARM_CCN_ONLINE, |
7ee681b2 | 96 | CPUHP_AP_WORKQUEUE_ONLINE, |
4df83742 | 97 | CPUHP_AP_RCUTREE_ONLINE, |
1cf4f629 TG |
98 | CPUHP_AP_NOTIFY_ONLINE, |
99 | CPUHP_AP_ONLINE_DYN, | |
100 | CPUHP_AP_ONLINE_DYN_END = CPUHP_AP_ONLINE_DYN + 30, | |
48d7f6c7 | 101 | CPUHP_AP_X86_HPET_ONLINE, |
251a5fd6 | 102 | CPUHP_AP_X86_KVM_CLK_ONLINE, |
aaddd7d1 | 103 | CPUHP_AP_ACTIVE, |
cff7d378 TG |
104 | CPUHP_ONLINE, |
105 | }; | |
106 | ||
5b7aa87e TG |
107 | int __cpuhp_setup_state(enum cpuhp_state state, const char *name, bool invoke, |
108 | int (*startup)(unsigned int cpu), | |
cf392d10 | 109 | int (*teardown)(unsigned int cpu), bool multi_instance); |
5b7aa87e TG |
110 | |
111 | /** | |
112 | * cpuhp_setup_state - Setup hotplug state callbacks with calling the callbacks | |
113 | * @state: The state for which the calls are installed | |
114 | * @name: Name of the callback (will be used in debug output) | |
115 | * @startup: startup callback function | |
116 | * @teardown: teardown callback function | |
117 | * | |
118 | * Installs the callback functions and invokes the startup callback on | |
119 | * the present cpus which have already reached the @state. | |
120 | */ | |
121 | static inline int cpuhp_setup_state(enum cpuhp_state state, | |
122 | const char *name, | |
123 | int (*startup)(unsigned int cpu), | |
124 | int (*teardown)(unsigned int cpu)) | |
125 | { | |
cf392d10 | 126 | return __cpuhp_setup_state(state, name, true, startup, teardown, false); |
5b7aa87e TG |
127 | } |
128 | ||
129 | /** | |
130 | * cpuhp_setup_state_nocalls - Setup hotplug state callbacks without calling the | |
131 | * callbacks | |
132 | * @state: The state for which the calls are installed | |
133 | * @name: Name of the callback. | |
134 | * @startup: startup callback function | |
135 | * @teardown: teardown callback function | |
136 | * | |
137 | * Same as @cpuhp_setup_state except that no calls are executed are invoked | |
138 | * during installation of this callback. NOP if SMP=n or HOTPLUG_CPU=n. | |
139 | */ | |
140 | static inline int cpuhp_setup_state_nocalls(enum cpuhp_state state, | |
141 | const char *name, | |
142 | int (*startup)(unsigned int cpu), | |
143 | int (*teardown)(unsigned int cpu)) | |
144 | { | |
cf392d10 TG |
145 | return __cpuhp_setup_state(state, name, false, startup, teardown, |
146 | false); | |
147 | } | |
148 | ||
149 | /** | |
150 | * cpuhp_setup_state_multi - Add callbacks for multi state | |
151 | * @state: The state for which the calls are installed | |
152 | * @name: Name of the callback. | |
153 | * @startup: startup callback function | |
154 | * @teardown: teardown callback function | |
155 | * | |
156 | * Sets the internal multi_instance flag and prepares a state to work as a multi | |
157 | * instance callback. No callbacks are invoked at this point. The callbacks are | |
158 | * invoked once an instance for this state are registered via | |
159 | * @cpuhp_state_add_instance or @cpuhp_state_add_instance_nocalls. | |
160 | */ | |
161 | static inline int cpuhp_setup_state_multi(enum cpuhp_state state, | |
162 | const char *name, | |
163 | int (*startup)(unsigned int cpu, | |
164 | struct hlist_node *node), | |
165 | int (*teardown)(unsigned int cpu, | |
166 | struct hlist_node *node)) | |
167 | { | |
168 | return __cpuhp_setup_state(state, name, false, | |
169 | (void *) startup, | |
170 | (void *) teardown, true); | |
171 | } | |
172 | ||
173 | int __cpuhp_state_add_instance(enum cpuhp_state state, struct hlist_node *node, | |
174 | bool invoke); | |
175 | ||
176 | /** | |
177 | * cpuhp_state_add_instance - Add an instance for a state and invoke startup | |
178 | * callback. | |
179 | * @state: The state for which the instance is installed | |
180 | * @node: The node for this individual state. | |
181 | * | |
182 | * Installs the instance for the @state and invokes the startup callback on | |
183 | * the present cpus which have already reached the @state. The @state must have | |
184 | * been earlier marked as multi-instance by @cpuhp_setup_state_multi. | |
185 | */ | |
186 | static inline int cpuhp_state_add_instance(enum cpuhp_state state, | |
187 | struct hlist_node *node) | |
188 | { | |
189 | return __cpuhp_state_add_instance(state, node, true); | |
190 | } | |
191 | ||
192 | /** | |
193 | * cpuhp_state_add_instance_nocalls - Add an instance for a state without | |
194 | * invoking the startup callback. | |
195 | * @state: The state for which the instance is installed | |
196 | * @node: The node for this individual state. | |
197 | * | |
198 | * Installs the instance for the @state The @state must have been earlier | |
199 | * marked as multi-instance by @cpuhp_setup_state_multi. | |
200 | */ | |
201 | static inline int cpuhp_state_add_instance_nocalls(enum cpuhp_state state, | |
202 | struct hlist_node *node) | |
203 | { | |
204 | return __cpuhp_state_add_instance(state, node, false); | |
5b7aa87e TG |
205 | } |
206 | ||
207 | void __cpuhp_remove_state(enum cpuhp_state state, bool invoke); | |
208 | ||
209 | /** | |
210 | * cpuhp_remove_state - Remove hotplug state callbacks and invoke the teardown | |
211 | * @state: The state for which the calls are removed | |
212 | * | |
213 | * Removes the callback functions and invokes the teardown callback on | |
214 | * the present cpus which have already reached the @state. | |
215 | */ | |
216 | static inline void cpuhp_remove_state(enum cpuhp_state state) | |
217 | { | |
218 | __cpuhp_remove_state(state, true); | |
219 | } | |
220 | ||
221 | /** | |
222 | * cpuhp_remove_state_nocalls - Remove hotplug state callbacks without invoking | |
223 | * teardown | |
224 | * @state: The state for which the calls are removed | |
225 | */ | |
226 | static inline void cpuhp_remove_state_nocalls(enum cpuhp_state state) | |
227 | { | |
228 | __cpuhp_remove_state(state, false); | |
229 | } | |
230 | ||
cf392d10 TG |
231 | /** |
232 | * cpuhp_remove_multi_state - Remove hotplug multi state callback | |
233 | * @state: The state for which the calls are removed | |
234 | * | |
235 | * Removes the callback functions from a multi state. This is the reverse of | |
236 | * cpuhp_setup_state_multi(). All instances should have been removed before | |
237 | * invoking this function. | |
238 | */ | |
239 | static inline void cpuhp_remove_multi_state(enum cpuhp_state state) | |
240 | { | |
241 | __cpuhp_remove_state(state, false); | |
242 | } | |
243 | ||
244 | int __cpuhp_state_remove_instance(enum cpuhp_state state, | |
245 | struct hlist_node *node, bool invoke); | |
246 | ||
247 | /** | |
248 | * cpuhp_state_remove_instance - Remove hotplug instance from state and invoke | |
249 | * the teardown callback | |
250 | * @state: The state from which the instance is removed | |
251 | * @node: The node for this individual state. | |
252 | * | |
253 | * Removes the instance and invokes the teardown callback on the present cpus | |
254 | * which have already reached the @state. | |
255 | */ | |
256 | static inline int cpuhp_state_remove_instance(enum cpuhp_state state, | |
257 | struct hlist_node *node) | |
258 | { | |
259 | return __cpuhp_state_remove_instance(state, node, true); | |
260 | } | |
261 | ||
262 | /** | |
263 | * cpuhp_state_remove_instance_nocalls - Remove hotplug instance from state | |
264 | * without invoking the reatdown callback | |
265 | * @state: The state from which the instance is removed | |
266 | * @node: The node for this individual state. | |
267 | * | |
268 | * Removes the instance without invoking the teardown callback. | |
269 | */ | |
270 | static inline int cpuhp_state_remove_instance_nocalls(enum cpuhp_state state, | |
271 | struct hlist_node *node) | |
272 | { | |
273 | return __cpuhp_state_remove_instance(state, node, false); | |
274 | } | |
275 | ||
8df3e07e TG |
276 | #ifdef CONFIG_SMP |
277 | void cpuhp_online_idle(enum cpuhp_state state); | |
278 | #else | |
279 | static inline void cpuhp_online_idle(enum cpuhp_state state) { } | |
280 | #endif | |
281 | ||
cff7d378 | 282 | #endif |