add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/kernel/time/tick-internal.h
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@@ -15,7 +15,6 @@
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 DECLARE_PER_CPU(struct tick_device, tick_cpu_device);
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 extern ktime_t tick_next_period;
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-extern ktime_t tick_period;
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 extern int tick_do_timer_cpu __read_mostly;
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 extern void tick_setup_periodic(struct clock_event_device *dev, int broadcast);
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@@ -62,9 +61,8 @@
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 /* Broadcasting support */
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 # ifdef CONFIG_GENERIC_CLOCKEVENTS_BROADCAST
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 extern int tick_device_uses_broadcast(struct clock_event_device *dev, int cpu);
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-extern void tick_install_broadcast_device(struct clock_event_device *dev);
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+extern void tick_install_broadcast_device(struct clock_event_device *dev, int cpu);
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 extern int tick_is_broadcast_device(struct clock_event_device *dev);
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-extern void tick_shutdown_broadcast(unsigned int cpu);
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 extern void tick_suspend_broadcast(void);
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 extern void tick_resume_broadcast(void);
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 extern bool tick_resume_check_broadcast(void);
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@@ -73,12 +71,12 @@
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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 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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-static inline void tick_install_broadcast_device(struct clock_event_device *dev) { }
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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_device_uses_broadcast(struct clock_event_device *dev, int cpu) { return 0; }
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 static inline void tick_do_periodic_broadcast(struct clock_event_device *d) { }
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-static inline void tick_shutdown_broadcast(unsigned int cpu) { }
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 static inline void tick_suspend_broadcast(void) { }
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 static inline void tick_resume_broadcast(void) { }
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 static inline bool tick_resume_check_broadcast(void) { return false; }
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@@ -128,18 +126,22 @@
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 /* Functions related to oneshot broadcasting */
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 #if defined(CONFIG_GENERIC_CLOCKEVENTS_BROADCAST) && defined(CONFIG_TICK_ONESHOT)
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 extern void tick_broadcast_switch_to_oneshot(void);
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-extern void tick_shutdown_broadcast_oneshot(unsigned int cpu);
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 extern int tick_broadcast_oneshot_active(void);
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 extern void tick_check_oneshot_broadcast_this_cpu(void);
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 bool tick_broadcast_oneshot_available(void);
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 extern struct cpumask *tick_get_broadcast_oneshot_mask(void);
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 #else /* !(BROADCAST && ONESHOT): */
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 static inline void tick_broadcast_switch_to_oneshot(void) { }
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-static inline void tick_shutdown_broadcast_oneshot(unsigned int cpu) { }
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 static inline int tick_broadcast_oneshot_active(void) { return 0; }
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 static inline void tick_check_oneshot_broadcast_this_cpu(void) { }
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 static inline bool tick_broadcast_oneshot_available(void) { return tick_oneshot_possible(); }
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 #endif /* !(BROADCAST && ONESHOT) */
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+
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+#if defined(CONFIG_GENERIC_CLOCKEVENTS_BROADCAST) && defined(CONFIG_HOTPLUG_CPU)
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+extern void tick_broadcast_offline(unsigned int cpu);
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+#else
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+static inline void tick_broadcast_offline(unsigned int cpu) { }
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+#endif
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 /* NO_HZ_FULL internal */
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 #ifdef CONFIG_NO_HZ_FULL
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@@ -163,3 +165,6 @@
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 extern u64 get_next_timer_interrupt(unsigned long basej, u64 basem);
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 void timer_clear_idle(void);
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+
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+void clock_was_set(void);
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+void clock_was_set_delayed(void);