tick_nohz_get_idle_calls_cpu  134 include/linux/tick.h extern unsigned long tick_nohz_get_idle_calls_cpu(int cpu);
tick_nohz_get_idle_calls_cpu  430 kernel/sched/cpufreq_schedutil.c 	unsigned long idle_calls = tick_nohz_get_idle_calls_cpu(sg_cpu->cpu);