diff options
Diffstat (limited to 'drivers/clocksource/timer-atlas7.c')
| -rw-r--r-- | drivers/clocksource/timer-atlas7.c | 41 |
1 files changed, 9 insertions, 32 deletions
diff --git a/drivers/clocksource/timer-atlas7.c b/drivers/clocksource/timer-atlas7.c index 90f8fbc154a4..4334e0330ada 100644 --- a/drivers/clocksource/timer-atlas7.c +++ b/drivers/clocksource/timer-atlas7.c @@ -172,9 +172,9 @@ static struct irqaction sirfsoc_timer1_irq = { .handler = sirfsoc_timer_interrupt, }; -static int sirfsoc_local_timer_setup(struct clock_event_device *ce) +static int sirfsoc_local_timer_starting_cpu(unsigned int cpu) { - int cpu = smp_processor_id(); + struct clock_event_device *ce = per_cpu_ptr(sirfsoc_clockevent, cpu); struct irqaction *action; if (cpu == 0) @@ -203,50 +203,27 @@ static int sirfsoc_local_timer_setup(struct clock_event_device *ce) return 0; } -static void sirfsoc_local_timer_stop(struct clock_event_device *ce) +static int sirfsoc_local_timer_dying_cpu(unsigned int cpu) { - int cpu = smp_processor_id(); - sirfsoc_timer_count_disable(1); if (cpu == 0) remove_irq(sirfsoc_timer_irq.irq, &sirfsoc_timer_irq); else remove_irq(sirfsoc_timer1_irq.irq, &sirfsoc_timer1_irq); + return 0; } -static int sirfsoc_cpu_notify(struct notifier_block *self, - unsigned long action, void *hcpu) -{ - /* - * Grab cpu pointer in each case to avoid spurious - * preemptible warnings - */ - switch (action & ~CPU_TASKS_FROZEN) { - case CPU_STARTING: - sirfsoc_local_timer_setup(this_cpu_ptr(sirfsoc_clockevent)); - break; - case CPU_DYING: - sirfsoc_local_timer_stop(this_cpu_ptr(sirfsoc_clockevent)); - break; - } - - return NOTIFY_OK; -} - -static struct notifier_block sirfsoc_cpu_nb = { - .notifier_call = sirfsoc_cpu_notify, -}; - static int __init sirfsoc_clockevent_init(void) { sirfsoc_clockevent = alloc_percpu(struct clock_event_device); BUG_ON(!sirfsoc_clockevent); - BUG_ON(register_cpu_notifier(&sirfsoc_cpu_nb)); - - /* Immediately configure the timer on the boot CPU */ - return sirfsoc_local_timer_setup(this_cpu_ptr(sirfsoc_clockevent)); + /* Install and invoke hotplug callbacks */ + return cpuhp_setup_state(CPUHP_AP_MARCO_TIMER_STARTING, + "AP_MARCO_TIMER_STARTING", + sirfsoc_local_timer_starting_cpu, + sirfsoc_local_timer_dying_cpu); } /* initialize the kernel jiffy timer source */ |