File: //sys/devices/system/cpu/hotplug/states
0: offline
1: threads:prepare
2: perf:prepare
3: perf/x86:prepare
9: x86/mce:dead
12: slub:dead
14: mm/writeback:dead
16: mm/vmstat:dead
17: softirq:dead
22: irq_poll:dead
23: block/softirq:dead
24: block/bio:dead
25: acpi/cpu-drv:dead
27: block/mq:dead
28: fs/buffer:dead
29: printk:dead
30: mm/memctrl:dead
31: lib/percpu_cnt:dead
32: lib/radix:dead
33: mm/page_alloc:pcp
34: net/dev:dead
36: iommu/iova:dead
39: padata:dead
41: random:prepare
42: workqueue:prepare
44: hrtimers:prepare
46: x86/x2apic:prepare
47: smpcfd:prepare
48: relay:prepare
49: slab:prepare
51: RCU/tree:prepare
60: base/topology:prepare
63: trace/RB:preapre
64: mm/zsmalloc:prepare
65: mm/zswap:prepare
66: mm/zswap_pool:prepare
69: timers:prepare
71: fork:vm_stack_cache
92: cpu:bringup
93: idle:dead
94: ap:offline
96: x86/cachectrl:starting
97: sched:starting
98: RCU/tree:dying
109: x86/microcode:starting
111: perf/x86:starting
114: perf/x86/cstate:starting
144: smpcfd:dying
147: ap:online
148: cpu:teardown
151: kvm/cpu:online
152: sched:waitempty
153: smpboot/threads:online
155: irq/affinity:online
156: block/mq:online
158: x86/intel/epb:online
159: perf:online
160: perf/x86:online
161: perf/x86/intel/uncore:online
164: perf/x86/rapl:online
166: perf/x86/cstate:online
193: lockup_detector:online
194: workqueue:online
195: random:online
196: RCU/tree:online
197: base/cacheinfo:online
198: dmar:enable_fault_handling
199: mm/writeback:online
200: mm/vmstat:online
201: padata:online
202: mm/compaction:online
203: io-wq/online
204: x86/msr:online
205: x86/cpuid:online
206: lib/percpu_cnt:online
207: idle/intel:online
208: acpi/cpu-drv:online
209: x86/therm:online
210: cpufreq:online
211: x86/mce:online
212: x86/microcode:online
213: printk:online
214: trace/hwlat:online
215: trace/osnoise:online
216: swap_slots_cache
217: hwmon/coretemp:online
218: thermal/x86_pkg:online
219: powercap/rapl:online
242: sched:active
243: online