diff options
Diffstat (limited to 'drivers/clocksource/dummy_timer.c')
| -rw-r--r-- | drivers/clocksource/dummy_timer.c | 46 |
1 files changed, 7 insertions, 39 deletions
diff --git a/drivers/clocksource/dummy_timer.c b/drivers/clocksource/dummy_timer.c index 1f55f9620338..6cee6dce5605 100644 --- a/drivers/clocksource/dummy_timer.c +++ b/drivers/clocksource/dummy_timer.c @@ -1,12 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * linux/drivers/clocksource/dummy_timer.c * * Copyright (C) 2013 ARM Ltd. * All Rights Reserved - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/clockchips.h> #include <linux/cpu.h> @@ -16,54 +13,25 @@ static DEFINE_PER_CPU(struct clock_event_device, dummy_timer_evt); -static void dummy_timer_set_mode(enum clock_event_mode mode, - struct clock_event_device *evt) -{ - /* - * Core clockevents code will call this when exchanging timer devices. - * We don't need to do anything here. - */ -} - -static void __cpuinit dummy_timer_setup(void) +static int dummy_timer_starting_cpu(unsigned int cpu) { - int cpu = smp_processor_id(); - struct clock_event_device *evt = __this_cpu_ptr(&dummy_timer_evt); + 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->set_mode = dummy_timer_set_mode; evt->cpumask = cpumask_of(cpu); clockevents_register_device(evt); + return 0; } -static int __cpuinit dummy_timer_cpu_notify(struct notifier_block *self, - unsigned long action, void *hcpu) -{ - if ((action & ~CPU_TASKS_FROZEN) == CPU_STARTING) - dummy_timer_setup(); - - return NOTIFY_OK; -} - -static struct notifier_block dummy_timer_cpu_nb __cpuinitdata = { - .notifier_call = dummy_timer_cpu_notify, -}; - static int __init dummy_timer_register(void) { - int err = register_cpu_notifier(&dummy_timer_cpu_nb); - if (err) - return err; - - /* We won't get a call on the boot CPU, so register immediately */ - if (num_possible_cpus() > 1) - dummy_timer_setup(); - - return 0; + return cpuhp_setup_state(CPUHP_AP_DUMMY_TIMER_STARTING, + "clockevents/dummy_timer:starting", + dummy_timer_starting_cpu, NULL); } early_initcall(dummy_timer_register); |