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timer_list: Print name of per-cpu wakeup device
With the introduction of per-cpu wakeup devices that can be used in preference to the broadcast timer, print the name of such devices when they are available. Signed-off-by: Will Deacon <will@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/r/20210524221818.15850-6-will@kernel.org
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3 changed files with 17 additions and 1 deletions
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@ -63,6 +63,13 @@ struct cpumask *tick_get_broadcast_mask(void)
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return tick_broadcast_mask;
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return tick_broadcast_mask;
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}
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}
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static struct clock_event_device *tick_get_oneshot_wakeup_device(int cpu);
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const struct clock_event_device *tick_get_wakeup_device(int cpu)
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{
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return tick_get_oneshot_wakeup_device(cpu);
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}
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/*
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/*
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* Start the device in periodic mode
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* Start the device in periodic mode
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*/
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*/
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@ -71,6 +71,7 @@ extern void tick_set_periodic_handler(struct clock_event_device *dev, int broadc
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extern int tick_broadcast_update_freq(struct clock_event_device *dev, u32 freq);
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extern int tick_broadcast_update_freq(struct clock_event_device *dev, u32 freq);
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extern struct tick_device *tick_get_broadcast_device(void);
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extern struct tick_device *tick_get_broadcast_device(void);
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extern struct cpumask *tick_get_broadcast_mask(void);
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extern struct cpumask *tick_get_broadcast_mask(void);
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extern const struct clock_event_device *tick_get_wakeup_device(int cpu);
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# else /* !CONFIG_GENERIC_CLOCKEVENTS_BROADCAST: */
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# else /* !CONFIG_GENERIC_CLOCKEVENTS_BROADCAST: */
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static inline void tick_install_broadcast_device(struct clock_event_device *dev, int cpu) { }
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static inline void tick_install_broadcast_device(struct clock_event_device *dev, int cpu) { }
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static inline int tick_is_broadcast_device(struct clock_event_device *dev) { return 0; }
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static inline int tick_is_broadcast_device(struct clock_event_device *dev) { return 0; }
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@ -228,6 +228,14 @@ print_tickdevice(struct seq_file *m, struct tick_device *td, int cpu)
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SEQ_printf(m, " event_handler: %ps\n", dev->event_handler);
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SEQ_printf(m, " event_handler: %ps\n", dev->event_handler);
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SEQ_printf(m, "\n");
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SEQ_printf(m, "\n");
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SEQ_printf(m, " retries: %lu\n", dev->retries);
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SEQ_printf(m, " retries: %lu\n", dev->retries);
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#ifdef CONFIG_GENERIC_CLOCKEVENTS_BROADCAST
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if (cpu >= 0) {
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const struct clock_event_device *wd = tick_get_wakeup_device(cpu);
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SEQ_printf(m, "Wakeup Device: %s\n", wd ? wd->name : "<NULL>");
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}
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#endif
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SEQ_printf(m, "\n");
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SEQ_printf(m, "\n");
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}
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}
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@ -248,7 +256,7 @@ static void timer_list_show_tickdevices_header(struct seq_file *m)
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static inline void timer_list_header(struct seq_file *m, u64 now)
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static inline void timer_list_header(struct seq_file *m, u64 now)
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{
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{
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SEQ_printf(m, "Timer List Version: v0.8\n");
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SEQ_printf(m, "Timer List Version: v0.9\n");
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SEQ_printf(m, "HRTIMER_MAX_CLOCK_BASES: %d\n", HRTIMER_MAX_CLOCK_BASES);
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SEQ_printf(m, "HRTIMER_MAX_CLOCK_BASES: %d\n", HRTIMER_MAX_CLOCK_BASES);
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SEQ_printf(m, "now at %Ld nsecs\n", (unsigned long long)now);
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SEQ_printf(m, "now at %Ld nsecs\n", (unsigned long long)now);
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SEQ_printf(m, "\n");
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SEQ_printf(m, "\n");
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