1CONFIG_RCU_TRACE=n 2CONFIG_SMP=y 3CONFIG_NR_CPUS=4 4CONFIG_HOTPLUG_CPU=y 5CONFIG_PREEMPT_NONE=y 6CONFIG_PREEMPT_VOLUNTARY=n 7CONFIG_PREEMPT=n 8#CHECK#CONFIG_RCU_EXPERT=n 9CONFIG_KPROBES=n 10CONFIG_FTRACE=n 11