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00c1d17aab
Install the callbacks via the state machine and let the core invoke the callbacks on the already online CPUs. Signed-off-by: Richard Cochran <rcochran@linutronix.de> Signed-off-by: Anna-Maria Gleixner <anna-maria@linutronix.de> Reviewed-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: rt@linutronix.de Link: http://lkml.kernel.org/r/20160713153336.130385842@linutronix.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
41 lines
1.0 KiB
C
41 lines
1.0 KiB
C
/*
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* linux/drivers/clocksource/dummy_timer.c
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*
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* Copyright (C) 2013 ARM Ltd.
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* All Rights Reserved
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/clockchips.h>
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#include <linux/cpu.h>
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#include <linux/init.h>
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#include <linux/percpu.h>
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#include <linux/cpumask.h>
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static DEFINE_PER_CPU(struct clock_event_device, dummy_timer_evt);
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static int dummy_timer_starting_cpu(unsigned int cpu)
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{
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struct clock_event_device *evt = per_cpu_ptr(&dummy_timer_evt, cpu);
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evt->name = "dummy_timer";
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evt->features = CLOCK_EVT_FEAT_PERIODIC |
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CLOCK_EVT_FEAT_ONESHOT |
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CLOCK_EVT_FEAT_DUMMY;
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evt->rating = 100;
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evt->cpumask = cpumask_of(cpu);
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clockevents_register_device(evt);
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return 0;
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}
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static int __init dummy_timer_register(void)
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{
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return cpuhp_setup_state(CPUHP_AP_DUMMY_TIMER_STARTING,
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"AP_DUMMY_TIMER_STARTING",
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dummy_timer_starting_cpu, NULL);
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}
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early_initcall(dummy_timer_register);
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