linux/kernel/time/tick-broadcast-hrtimer.c

// SPDX-License-Identifier: GPL-2.0
/*
 * Emulate a local clock event device via a pseudo clock device.
 */
#include <linux/cpu.h>
#include <linux/err.h>
#include <linux/hrtimer.h>
#include <linux/interrupt.h>
#include <linux/percpu.h>
#include <linux/profile.h>
#include <linux/clockchips.h>
#include <linux/sched.h>
#include <linux/smp.h>
#include <linux/module.h>

#include "tick-internal.h"

static struct hrtimer bctimer;

static int bc_shutdown(struct clock_event_device *evt)
{ … }

/*
 * This is called from the guts of the broadcast code when the cpu
 * which is about to enter idle has the earliest broadcast timer event.
 */
static int bc_set_next(ktime_t expires, struct clock_event_device *bc)
{ … }

static struct clock_event_device ce_broadcast_hrtimer = …;

static enum hrtimer_restart bc_handler(struct hrtimer *t)
{ … }

void tick_setup_hrtimer_broadcast(void)
{ … }