ee7f750b16332037917a82927d977d4f66c4a5c9
[deliverable/linux.git] / include / linux / cpuhotplug.h
1 #ifndef __CPUHOTPLUG_H
2 #define __CPUHOTPLUG_H
3
4 enum cpuhp_state {
5 CPUHP_OFFLINE,
6 CPUHP_CREATE_THREADS,
7 CPUHP_PERF_PREPARE,
8 CPUHP_PERF_X86_PREPARE,
9 CPUHP_PERF_X86_UNCORE_PREP,
10 CPUHP_PERF_X86_AMD_UNCORE_PREP,
11 CPUHP_PERF_X86_RAPL_PREP,
12 CPUHP_PERF_BFIN,
13 CPUHP_PERF_POWER,
14 CPUHP_PERF_SUPERH,
15 CPUHP_X86_HPET_DEAD,
16 CPUHP_X86_APB_DEAD,
17 CPUHP_WORKQUEUE_PREP,
18 CPUHP_HRTIMERS_PREPARE,
19 CPUHP_PROFILE_PREPARE,
20 CPUHP_X2APIC_PREPARE,
21 CPUHP_SMPCFD_PREPARE,
22 CPUHP_TIMERS_DEAD,
23 CPUHP_RCUTREE_PREP,
24 CPUHP_NOTIFY_PREPARE,
25 CPUHP_BRINGUP_CPU,
26 CPUHP_AP_IDLE_DEAD,
27 CPUHP_AP_OFFLINE,
28 CPUHP_AP_SCHED_STARTING,
29 CPUHP_AP_RCUTREE_DYING,
30 CPUHP_AP_IRQ_GIC_STARTING,
31 CPUHP_AP_IRQ_GICV3_STARTING,
32 CPUHP_AP_IRQ_HIP04_STARTING,
33 CPUHP_AP_IRQ_ARMADA_XP_STARTING,
34 CPUHP_AP_IRQ_ARMADA_CASC_STARTING,
35 CPUHP_AP_IRQ_BCM2836_STARTING,
36 CPUHP_AP_ARM_MVEBU_COHERENCY,
37 CPUHP_AP_PERF_X86_UNCORE_STARTING,
38 CPUHP_AP_PERF_X86_AMD_UNCORE_STARTING,
39 CPUHP_AP_PERF_X86_STARTING,
40 CPUHP_AP_PERF_X86_AMD_IBS_STARTING,
41 CPUHP_AP_PERF_X86_CQM_STARTING,
42 CPUHP_AP_PERF_X86_CSTATE_STARTING,
43 CPUHP_AP_PERF_XTENSA_STARTING,
44 CPUHP_AP_PERF_METAG_STARTING,
45 CPUHP_AP_MIPS_OP_LOONGSON3_STARTING,
46 CPUHP_AP_ARM_VFP_STARTING,
47 CPUHP_AP_PERF_ARM_STARTING,
48 CPUHP_AP_ARM_L2X0_STARTING,
49 CPUHP_AP_ARM_ARCH_TIMER_STARTING,
50 CPUHP_AP_ARM_GLOBAL_TIMER_STARTING,
51 CPUHP_AP_DUMMY_TIMER_STARTING,
52 CPUHP_AP_EXYNOS4_MCT_TIMER_STARTING,
53 CPUHP_AP_ARM_TWD_STARTING,
54 CPUHP_AP_METAG_TIMER_STARTING,
55 CPUHP_AP_QCOM_TIMER_STARTING,
56 CPUHP_AP_ARMADA_TIMER_STARTING,
57 CPUHP_AP_MIPS_GIC_TIMER_STARTING,
58 CPUHP_AP_KVM_STARTING,
59 CPUHP_AP_KVM_ARM_VGIC_INIT_STARTING,
60 CPUHP_AP_KVM_ARM_VGIC_STARTING,
61 CPUHP_AP_KVM_ARM_TIMER_STARTING,
62 CPUHP_AP_ARM_XEN_STARTING,
63 CPUHP_AP_ARM_CORESIGHT_STARTING,
64 CPUHP_AP_ARM_CORESIGHT4_STARTING,
65 CPUHP_AP_ARM64_ISNDEP_STARTING,
66 CPUHP_AP_LEDTRIG_STARTING,
67 CPUHP_AP_SMPCFD_DYING,
68 CPUHP_AP_X86_TBOOT_DYING,
69 CPUHP_AP_NOTIFY_STARTING,
70 CPUHP_AP_ONLINE,
71 CPUHP_TEARDOWN_CPU,
72 CPUHP_AP_ONLINE_IDLE,
73 CPUHP_AP_SMPBOOT_THREADS,
74 CPUHP_AP_X86_VDSO_VMA_ONLINE,
75 CPUHP_AP_PERF_ONLINE,
76 CPUHP_AP_PERF_X86_ONLINE,
77 CPUHP_AP_PERF_X86_UNCORE_ONLINE,
78 CPUHP_AP_PERF_X86_AMD_UNCORE_ONLINE,
79 CPUHP_AP_PERF_X86_AMD_POWER_ONLINE,
80 CPUHP_AP_PERF_X86_RAPL_ONLINE,
81 CPUHP_AP_PERF_X86_CQM_ONLINE,
82 CPUHP_AP_PERF_X86_CSTATE_ONLINE,
83 CPUHP_AP_PERF_S390_CF_ONLINE,
84 CPUHP_AP_PERF_S390_SF_ONLINE,
85 CPUHP_AP_PERF_ARM_CCI_ONLINE,
86 CPUHP_AP_PERF_ARM_CCN_ONLINE,
87 CPUHP_AP_WORKQUEUE_ONLINE,
88 CPUHP_AP_RCUTREE_ONLINE,
89 CPUHP_AP_NOTIFY_ONLINE,
90 CPUHP_AP_ONLINE_DYN,
91 CPUHP_AP_ONLINE_DYN_END = CPUHP_AP_ONLINE_DYN + 30,
92 CPUHP_AP_X86_HPET_ONLINE,
93 CPUHP_AP_X86_KVM_CLK_ONLINE,
94 CPUHP_AP_ACTIVE,
95 CPUHP_ONLINE,
96 };
97
98 int __cpuhp_setup_state(enum cpuhp_state state, const char *name, bool invoke,
99 int (*startup)(unsigned int cpu),
100 int (*teardown)(unsigned int cpu));
101
102 /**
103 * cpuhp_setup_state - Setup hotplug state callbacks with calling the callbacks
104 * @state: The state for which the calls are installed
105 * @name: Name of the callback (will be used in debug output)
106 * @startup: startup callback function
107 * @teardown: teardown callback function
108 *
109 * Installs the callback functions and invokes the startup callback on
110 * the present cpus which have already reached the @state.
111 */
112 static inline int cpuhp_setup_state(enum cpuhp_state state,
113 const char *name,
114 int (*startup)(unsigned int cpu),
115 int (*teardown)(unsigned int cpu))
116 {
117 return __cpuhp_setup_state(state, name, true, startup, teardown);
118 }
119
120 /**
121 * cpuhp_setup_state_nocalls - Setup hotplug state callbacks without calling the
122 * callbacks
123 * @state: The state for which the calls are installed
124 * @name: Name of the callback.
125 * @startup: startup callback function
126 * @teardown: teardown callback function
127 *
128 * Same as @cpuhp_setup_state except that no calls are executed are invoked
129 * during installation of this callback. NOP if SMP=n or HOTPLUG_CPU=n.
130 */
131 static inline int cpuhp_setup_state_nocalls(enum cpuhp_state state,
132 const char *name,
133 int (*startup)(unsigned int cpu),
134 int (*teardown)(unsigned int cpu))
135 {
136 return __cpuhp_setup_state(state, name, false, startup, teardown);
137 }
138
139 void __cpuhp_remove_state(enum cpuhp_state state, bool invoke);
140
141 /**
142 * cpuhp_remove_state - Remove hotplug state callbacks and invoke the teardown
143 * @state: The state for which the calls are removed
144 *
145 * Removes the callback functions and invokes the teardown callback on
146 * the present cpus which have already reached the @state.
147 */
148 static inline void cpuhp_remove_state(enum cpuhp_state state)
149 {
150 __cpuhp_remove_state(state, true);
151 }
152
153 /**
154 * cpuhp_remove_state_nocalls - Remove hotplug state callbacks without invoking
155 * teardown
156 * @state: The state for which the calls are removed
157 */
158 static inline void cpuhp_remove_state_nocalls(enum cpuhp_state state)
159 {
160 __cpuhp_remove_state(state, false);
161 }
162
163 #ifdef CONFIG_SMP
164 void cpuhp_online_idle(enum cpuhp_state state);
165 #else
166 static inline void cpuhp_online_idle(enum cpuhp_state state) { }
167 #endif
168
169 #endif
This page took 0.041762 seconds and 5 git commands to generate.