File: //sys/devices/system/cpu/hotplug/states
0: offline
1: threads:prepare
2: perf:prepare
9: x86/mce:dead
10: virtio/net:dead
11: slub:dead
13: mm/writeback:dead
14: mm/vmstat:dead
15: softirq:dead
20: irq_poll:dead
21: block/softirq:dead
22: acpi/cpu-drv:dead
24: block/mq:dead
25: fs/buffer:dead
26: printk:dead
27: mm/memctrl:dead
28: lib/percpu_cnt:dead
29: lib/radix:dead
30: mm/page_alloc:dead
31: net/dev:dead
36: padata:dead
37: random:prepare
38: workqueue:prepare
40: hrtimers:prepare
43: smpcfd:prepare
44: relay:prepare
45: slab:prepare
47: RCU/tree:prepare
56: base/topology:prepare
59: trace/RB:preapre
61: mm/zswap:prepare
62: mm/zswap_pool:prepare
65: timers:prepare
67: kvmclock:setup_percpu
68: fork:vm_stack_cache
88: cpu:bringup
89: idle:dead
90: ap:offline
91: sched:starting
92: RCU/tree:dying
132: kvm/cpu:starting
142: smpcfd:dying
143: hrtimers:dying
146: ap:online
147: cpu:teardown
149: smpboot/threads:online
151: irq/affinity:online
152: block/mq:online
155: perf:online
160: perf/x86/rapl:online
181: lockup_detector:online
182: workqueue:online
183: random:online
184: RCU/tree:online
185: base/cacheinfo:online
186: x86/kvm:online
187: mm/writeback:online
188: mm/vmstat:online
189: padata:online
190: mm/compaction:online
191: io-wq/online
192: lib/percpu_cnt:online
193: acpi/cpu-drv:online
194: leds/trigger:starting
195: x86/mce:online
196: printk:online
197: platform/x86/turbo_max_3:online
198: virtio/net:online
199: swap_slots_cache
218: x86/kvm/clk:online
219: sched:active
220: online