1 #ifndef __CPUHOTPLUG_H 2 #define __CPUHOTPLUG_H 3 4 #include <linux/types.h> 5 6 enum cpuhp_state { 7 CPUHP_OFFLINE, 8 CPUHP_CREATE_THREADS, 9 CPUHP_PERF_PREPARE, 10 CPUHP_PERF_X86_PREPARE, 11 CPUHP_PERF_X86_UNCORE_PREP, 12 CPUHP_PERF_X86_AMD_UNCORE_PREP, 13 CPUHP_PERF_X86_RAPL_PREP, 14 CPUHP_PERF_BFIN, 15 CPUHP_PERF_POWER, 16 CPUHP_PERF_SUPERH, 17 CPUHP_X86_HPET_DEAD, 18 CPUHP_X86_APB_DEAD, 19 CPUHP_WORKQUEUE_PREP, 20 CPUHP_POWER_NUMA_PREPARE, 21 CPUHP_HRTIMERS_PREPARE, 22 CPUHP_PROFILE_PREPARE, 23 CPUHP_X2APIC_PREPARE, 24 CPUHP_SMPCFD_PREPARE, 25 CPUHP_RCUTREE_PREP, 26 CPUHP_NOTIFY_PREPARE, 27 CPUHP_TIMERS_DEAD, 28 CPUHP_BRINGUP_CPU, 29 CPUHP_AP_IDLE_DEAD, 30 CPUHP_AP_OFFLINE, 31 CPUHP_AP_SCHED_STARTING, 32 CPUHP_AP_RCUTREE_DYING, 33 CPUHP_AP_IRQ_GIC_STARTING, 34 CPUHP_AP_IRQ_GICV3_STARTING, 35 CPUHP_AP_IRQ_HIP04_STARTING, 36 CPUHP_AP_IRQ_ARMADA_XP_STARTING, 37 CPUHP_AP_IRQ_ARMADA_CASC_STARTING, 38 CPUHP_AP_IRQ_BCM2836_STARTING, 39 CPUHP_AP_ARM_MVEBU_COHERENCY, 40 CPUHP_AP_PERF_X86_UNCORE_STARTING, 41 CPUHP_AP_PERF_X86_AMD_UNCORE_STARTING, 42 CPUHP_AP_PERF_X86_STARTING, 43 CPUHP_AP_PERF_X86_AMD_IBS_STARTING, 44 CPUHP_AP_PERF_X86_CQM_STARTING, 45 CPUHP_AP_PERF_X86_CSTATE_STARTING, 46 CPUHP_AP_PERF_XTENSA_STARTING, 47 CPUHP_AP_PERF_METAG_STARTING, 48 CPUHP_AP_MIPS_OP_LOONGSON3_STARTING, 49 CPUHP_AP_ARM_VFP_STARTING, 50 CPUHP_AP_PERF_ARM_STARTING, 51 CPUHP_AP_ARM_L2X0_STARTING, 52 CPUHP_AP_ARM_ARCH_TIMER_STARTING, 53 CPUHP_AP_ARM_GLOBAL_TIMER_STARTING, 54 CPUHP_AP_DUMMY_TIMER_STARTING, 55 CPUHP_AP_EXYNOS4_MCT_TIMER_STARTING, 56 CPUHP_AP_ARM_TWD_STARTING, 57 CPUHP_AP_METAG_TIMER_STARTING, 58 CPUHP_AP_QCOM_TIMER_STARTING, 59 CPUHP_AP_ARMADA_TIMER_STARTING, 60 CPUHP_AP_MARCO_TIMER_STARTING, 61 CPUHP_AP_MIPS_GIC_TIMER_STARTING, 62 CPUHP_AP_ARC_TIMER_STARTING, 63 CPUHP_AP_KVM_STARTING, 64 CPUHP_AP_KVM_ARM_VGIC_INIT_STARTING, 65 CPUHP_AP_KVM_ARM_VGIC_STARTING, 66 CPUHP_AP_KVM_ARM_TIMER_STARTING, 67 CPUHP_AP_ARM_XEN_STARTING, 68 CPUHP_AP_ARM_CORESIGHT_STARTING, 69 CPUHP_AP_ARM_CORESIGHT4_STARTING, 70 CPUHP_AP_ARM64_ISNDEP_STARTING, 71 CPUHP_AP_SMPCFD_DYING, 72 CPUHP_AP_X86_TBOOT_DYING, 73 CPUHP_AP_NOTIFY_STARTING, 74 CPUHP_AP_ONLINE, 75 CPUHP_TEARDOWN_CPU, 76 CPUHP_AP_ONLINE_IDLE, 77 CPUHP_AP_SMPBOOT_THREADS, 78 CPUHP_AP_X86_VDSO_VMA_ONLINE, 79 CPUHP_AP_PERF_ONLINE, 80 CPUHP_AP_PERF_X86_ONLINE, 81 CPUHP_AP_PERF_X86_UNCORE_ONLINE, 82 CPUHP_AP_PERF_X86_AMD_UNCORE_ONLINE, 83 CPUHP_AP_PERF_X86_AMD_POWER_ONLINE, 84 CPUHP_AP_PERF_X86_RAPL_ONLINE, 85 CPUHP_AP_PERF_X86_CQM_ONLINE, 86 CPUHP_AP_PERF_X86_CSTATE_ONLINE, 87 CPUHP_AP_PERF_S390_CF_ONLINE, 88 CPUHP_AP_PERF_S390_SF_ONLINE, 89 CPUHP_AP_PERF_ARM_CCI_ONLINE, 90 CPUHP_AP_PERF_ARM_CCN_ONLINE, 91 CPUHP_AP_WORKQUEUE_ONLINE, 92 CPUHP_AP_RCUTREE_ONLINE, 93 CPUHP_AP_NOTIFY_ONLINE, 94 CPUHP_AP_ONLINE_DYN, 95 CPUHP_AP_ONLINE_DYN_END = CPUHP_AP_ONLINE_DYN + 30, 96 CPUHP_AP_X86_HPET_ONLINE, 97 CPUHP_AP_X86_KVM_CLK_ONLINE, 98 CPUHP_AP_ACTIVE, 99 CPUHP_ONLINE, 100 }; 101 102 int __cpuhp_setup_state(enum cpuhp_state state, const char *name, bool invoke, 103 int (*startup)(unsigned int cpu), 104 int (*teardown)(unsigned int cpu)); 105 106 /** 107 * cpuhp_setup_state - Setup hotplug state callbacks with calling the callbacks 108 * @state: The state for which the calls are installed 109 * @name: Name of the callback (will be used in debug output) 110 * @startup: startup callback function 111 * @teardown: teardown callback function 112 * 113 * Installs the callback functions and invokes the startup callback on 114 * the present cpus which have already reached the @state. 115 */ 116 static inline int cpuhp_setup_state(enum cpuhp_state state, 117 const char *name, 118 int (*startup)(unsigned int cpu), 119 int (*teardown)(unsigned int cpu)) 120 { 121 return __cpuhp_setup_state(state, name, true, startup, teardown); 122 } 123 124 /** 125 * cpuhp_setup_state_nocalls - Setup hotplug state callbacks without calling the 126 * callbacks 127 * @state: The state for which the calls are installed 128 * @name: Name of the callback. 129 * @startup: startup callback function 130 * @teardown: teardown callback function 131 * 132 * Same as @cpuhp_setup_state except that no calls are executed are invoked 133 * during installation of this callback. NOP if SMP=n or HOTPLUG_CPU=n. 134 */ 135 static inline int cpuhp_setup_state_nocalls(enum cpuhp_state state, 136 const char *name, 137 int (*startup)(unsigned int cpu), 138 int (*teardown)(unsigned int cpu)) 139 { 140 return __cpuhp_setup_state(state, name, false, startup, teardown); 141 } 142 143 void __cpuhp_remove_state(enum cpuhp_state state, bool invoke); 144 145 /** 146 * cpuhp_remove_state - Remove hotplug state callbacks and invoke the teardown 147 * @state: The state for which the calls are removed 148 * 149 * Removes the callback functions and invokes the teardown callback on 150 * the present cpus which have already reached the @state. 151 */ 152 static inline void cpuhp_remove_state(enum cpuhp_state state) 153 { 154 __cpuhp_remove_state(state, true); 155 } 156 157 /** 158 * cpuhp_remove_state_nocalls - Remove hotplug state callbacks without invoking 159 * teardown 160 * @state: The state for which the calls are removed 161 */ 162 static inline void cpuhp_remove_state_nocalls(enum cpuhp_state state) 163 { 164 __cpuhp_remove_state(state, false); 165 } 166 167 #ifdef CONFIG_SMP 168 void cpuhp_online_idle(enum cpuhp_state state); 169 #else 170 static inline void cpuhp_online_idle(enum cpuhp_state state) { } 171 #endif 172 173 #endif 174