TICK_DEP_BIT_RCU_EXP
#define TICK_DEP_BIT_MAX TICK_DEP_BIT_RCU_EXP
#define TICK_DEP_MASK_RCU_EXP (1 << TICK_DEP_BIT_RCU_EXP)
tick_dep_clear_cpu(cpu, TICK_DEP_BIT_RCU_EXP);
tick_dep_set_cpu(cpu, TICK_DEP_BIT_RCU_EXP);