TICK_DO_TIMER_BOOT   48 kernel/time/tick-common.c int tick_do_timer_cpu __read_mostly = TICK_DO_TIMER_BOOT;
TICK_DO_TIMER_BOOT  216 kernel/time/tick-common.c 		if (tick_do_timer_cpu == TICK_DO_TIMER_BOOT) {
TICK_DO_TIMER_BOOT  924 kernel/time/tick-sched.c 		if (unlikely(tick_do_timer_cpu == TICK_DO_TIMER_BOOT))