File: //proc/thread-self/root/sys/devices/system/cpu/hotplug/states
0: offline
1: threads:prepare
2: perf:prepare
3: perf/x86:prepare
4: perf/x86/amd/uncore:prepare
9: x86/mce:dead
10: virtio/net:dead
11: slub:dead
12: mm/writeback:dead
13: mm/vmstat:dead
14: softirq:dead
19: irq_poll:dead
20: block/softirq:dead
21: acpi/cpu-drv:dead
23: block/mq:dead
24: fs/buffer:dead
25: printk:dead
26: mm/memctrl:dead
27: lib/percpu_cnt:dead
28: lib/radix:dead
29: mm/page_alloc:dead
30: net/dev:dead
35: workqueue:prepare
37: hrtimers:prepare
40: smpcfd:prepare
41: relay:prepare
42: slab:prepare
44: RCU/tree:prepare
53: base/topology:prepare
56: trace/RB:preapre
57: mm/zsmalloc:prepare
58: mm/zswap:prepare
59: mm/zswap_pool:prepare
62: timers:prepare
64: kvmclock:setup_percpu
65: fork:vm_stack_cache
66: padata:prepare
85: cpu:bringup
86: idle:dead
87: ap:offline
88: sched:starting
89: RCU/tree:dying
97: perf/x86/amd/uncore:starting
98: perf/x86:starting
124: kvm/cpu:starting
132: smpcfd:dying
135: ap:online
136: cpu:teardown
138: smpboot/threads:online
140: irq/affinity:online
143: perf:online
144: perf/x86:online
146: perf/x86/amd/uncore:online
167: lockup_detector:online
168: workqueue:online
169: RCU/tree:online
170: base/cacheinfo:online
171: x86/kvm:online
172: mm/writeback:online
173: mm/vmstat:online
174: padata:online
175: pci/amd_bus:online
176: mm/compaction:online
177: io-wq/online
178: block/mq:online
179: x86/msr:online
180: x86/cpuid:online
181: mm/vmscan:online
182: lib/percpu_cnt:online
183: acpi/cpu-drv:online
184: x86/mce:online
185: printk:online
186: virtio/net:online
187: swap_slots_cache
203: x86/kvm/clk:online
204: sched:active
205: online