[linux-2.6-block.git] / drivers / clocksource / dummy_timer.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 *  linux/drivers/clocksource/dummy_timer.c
 *
 *  Copyright (C) 2013 ARM Ltd.
 *  All Rights Reserved
 */
#include <linux/clockchips.h>
#include <linux/cpu.h>
#include <linux/init.h>
#include <linux/percpu.h>
#include <linux/cpumask.h>

static DEFINE_PER_CPU(struct clock_event_device, dummy_timer_evt);

static int dummy_timer_starting_cpu(unsigned int cpu)
{
	struct clock_event_device *evt = per_cpu_ptr(&dummy_timer_evt, cpu);

	evt->name	= "dummy_timer";
	evt->features	= CLOCK_EVT_FEAT_PERIODIC |
			  CLOCK_EVT_FEAT_ONESHOT |
			  CLOCK_EVT_FEAT_DUMMY;
	evt->rating	= 100;
	evt->cpumask	= cpumask_of(cpu);

	clockevents_register_device(evt);
	return 0;
}

static int __init dummy_timer_register(void)
{
	return cpuhp_setup_state(CPUHP_AP_DUMMY_TIMER_STARTING,
				 "clockevents/dummy_timer:starting",
				 dummy_timer_starting_cpu, NULL);
}
early_initcall(dummy_timer_register);
Commit	Line	Data
	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
	14	static DEFINE_PER_CPU(struct clock_event_device, dummy_timer_evt);
	15
	16	static 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
	31	static 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	}
	37	early_initcall(dummy_timer_register);