1// SPDX-License-Identifier: GPL-2.0-only
 2/*
 3 *  linux/drivers/clocksource/dummy_timer.c
 4 *
 5 *  Copyright (C) 2013 ARM Ltd.
 6 *  All Rights Reserved
 
 
 
 
 7 */
 8#include <linux/clockchips.h>
 9#include <linux/cpu.h>
10#include <linux/init.h>
11#include <linux/percpu.h>
12#include <linux/cpumask.h>
13
14static DEFINE_PER_CPU(struct clock_event_device, dummy_timer_evt);
15
16static int dummy_timer_starting_cpu(unsigned int cpu)
17{
18	struct clock_event_device *evt = per_cpu_ptr(&dummy_timer_evt, cpu);
19
20	evt->name	= "dummy_timer";
21	evt->features	= CLOCK_EVT_FEAT_PERIODIC |
22			  CLOCK_EVT_FEAT_ONESHOT |
23			  CLOCK_EVT_FEAT_DUMMY;
24	evt->rating	= 100;
25	evt->cpumask	= cpumask_of(cpu);
26
27	clockevents_register_device(evt);
28	return 0;
29}
30
31static int __init dummy_timer_register(void)
32{
33	return cpuhp_setup_state(CPUHP_AP_DUMMY_TIMER_STARTING,
34				 "clockevents/dummy_timer:starting",
35				 dummy_timer_starting_cpu, NULL);
36}
37early_initcall(dummy_timer_register);

 
 1/*
 2 *  linux/drivers/clocksource/dummy_timer.c
 3 *
 4 *  Copyright (C) 2013 ARM Ltd.
 5 *  All Rights Reserved
 6 *
 7 * This program is free software; you can redistribute it and/or modify
 8 * it under the terms of the GNU General Public License version 2 as
 9 * published by the Free Software Foundation.
10 */
11#include <linux/clockchips.h>
12#include <linux/cpu.h>
13#include <linux/init.h>
14#include <linux/percpu.h>
15#include <linux/cpumask.h>
16
17static DEFINE_PER_CPU(struct clock_event_device, dummy_timer_evt);
18
19static int dummy_timer_starting_cpu(unsigned int cpu)
20{
21	struct clock_event_device *evt = per_cpu_ptr(&dummy_timer_evt, cpu);
22
23	evt->name	= "dummy_timer";
24	evt->features	= CLOCK_EVT_FEAT_PERIODIC |
25			  CLOCK_EVT_FEAT_ONESHOT |
26			  CLOCK_EVT_FEAT_DUMMY;
27	evt->rating	= 100;
28	evt->cpumask	= cpumask_of(cpu);
29
30	clockevents_register_device(evt);
31	return 0;
32}
33
34static int __init dummy_timer_register(void)
35{
36	return cpuhp_setup_state(CPUHP_AP_DUMMY_TIMER_STARTING,
37				 "clockevents/dummy_timer:starting",
38				 dummy_timer_starting_cpu, NULL);
39}
40early_initcall(dummy_timer_register);