2 * tick internal variable and functions used by low/high res code
4 DECLARE_PER_CPU(struct tick_device, tick_cpu_device);
5 extern spinlock_t tick_device_lock;
6 extern ktime_t tick_next_period;
7 extern ktime_t tick_period;
9 extern void tick_setup_periodic(struct clock_event_device *dev, int broadcast);
10 extern void tick_handle_periodic(struct clock_event_device *dev);
13 * NO_HZ / high resolution timer shared code
15 #ifdef CONFIG_TICK_ONESHOT
16 extern void tick_setup_oneshot(struct clock_event_device *newdev,
17 void (*handler)(struct clock_event_device *),
19 extern int tick_program_event(ktime_t expires, int force);
20 extern void tick_oneshot_notify(void);
21 extern int tick_switch_to_oneshot(void (*handler)(struct clock_event_device *));
23 # ifdef CONFIG_GENERIC_CLOCKEVENTS_BROADCAST
24 extern void tick_broadcast_setup_oneshot(struct clock_event_device *bc);
25 extern void tick_broadcast_oneshot_control(unsigned long reason);
26 extern void tick_broadcast_switch_to_oneshot(void);
27 extern void tick_shutdown_broadcast_oneshot(unsigned int *cpup);
28 # else /* BROADCAST */
29 static inline void tick_broadcast_setup_oneshot(struct clock_event_device *bc)
33 static inline void tick_broadcast_oneshot_control(unsigned long reason) { }
34 static inline void tick_broadcast_switch_to_oneshot(void) { }
35 static inline void tick_shutdown_broadcast_oneshot(unsigned int *cpup) { }
36 # endif /* !BROADCAST */
40 void tick_setup_oneshot(struct clock_event_device *newdev,
41 void (*handler)(struct clock_event_device *),
46 static inline int tick_program_event(ktime_t expires, int force)
50 static inline void tick_oneshot_notify(void) { }
51 static inline void tick_broadcast_setup_oneshot(struct clock_event_device *bc)
55 static inline void tick_broadcast_oneshot_control(unsigned long reason) { }
56 static inline void tick_shutdown_broadcast_oneshot(unsigned int *cpup) { }
57 #endif /* !TICK_ONESHOT */
60 * Broadcasting support
62 #ifdef CONFIG_GENERIC_CLOCKEVENTS_BROADCAST
63 extern int tick_do_broadcast(cpumask_t mask);
65 extern int tick_device_uses_broadcast(struct clock_event_device *dev, int cpu);
66 extern int tick_check_broadcast_device(struct clock_event_device *dev);
67 extern int tick_is_broadcast_device(struct clock_event_device *dev);
68 extern void tick_broadcast_on_off(unsigned long reason, int *oncpu);
69 extern void tick_shutdown_broadcast(unsigned int *cpup);
72 tick_set_periodic_handler(struct clock_event_device *dev, int broadcast);
74 #else /* !BROADCAST */
76 static inline int tick_check_broadcast_device(struct clock_event_device *dev)
81 static inline int tick_is_broadcast_device(struct clock_event_device *dev)
85 static inline int tick_device_uses_broadcast(struct clock_event_device *dev,
90 static inline void tick_do_periodic_broadcast(struct clock_event_device *d) { }
91 static inline void tick_broadcast_on_off(unsigned long reason, int *oncpu) { }
92 static inline void tick_shutdown_broadcast(unsigned int *cpup) { }
95 * Set the periodic handler in non broadcast mode
97 static inline void tick_set_periodic_handler(struct clock_event_device *dev,
100 dev->event_handler = tick_handle_periodic;
102 #endif /* !BROADCAST */
105 * Check, if the device is functional or a dummy for broadcast
107 static inline int tick_device_is_functional(struct clock_event_device *dev)
109 return !(dev->features & CLOCK_EVT_FEAT_DUMMY);