tick_switch_to_oneshot 30 kernel/time/tick-internal.h extern int tick_switch_to_oneshot(void (*handler)(struct clock_event_device *)); tick_switch_to_oneshot 139 kernel/time/tick-oneshot.c return tick_switch_to_oneshot(hrtimer_interrupt); tick_switch_to_oneshot 528 kernel/time/tick-sched.c if (tick_switch_to_oneshot(tick_nohz_handler)) {