// 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);