| Thomas Gleixner | f8381cb | 2007-02-16 01:28:02 -0800 | [diff] [blame^] | 1 | /* |
| 2 | * tick internal variable and functions used by low/high res code |
| 3 | */ |
| 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; |
| 8 | |
| 9 | extern void tick_setup_periodic(struct clock_event_device *dev, int broadcast); |
| 10 | extern void tick_handle_periodic(struct clock_event_device *dev); |
| 11 | |
| 12 | /* |
| 13 | * Broadcasting support |
| 14 | */ |
| 15 | #ifdef CONFIG_GENERIC_CLOCKEVENTS_BROADCAST |
| 16 | extern int tick_do_broadcast(cpumask_t mask); |
| 17 | extern struct tick_device tick_broadcast_device; |
| 18 | extern spinlock_t tick_broadcast_lock; |
| 19 | |
| 20 | extern int tick_device_uses_broadcast(struct clock_event_device *dev, int cpu); |
| 21 | extern int tick_check_broadcast_device(struct clock_event_device *dev); |
| 22 | extern int tick_is_broadcast_device(struct clock_event_device *dev); |
| 23 | extern void tick_broadcast_on_off(unsigned long reason, int *oncpu); |
| 24 | extern void tick_shutdown_broadcast(unsigned int *cpup); |
| 25 | |
| 26 | extern void |
| 27 | tick_set_periodic_handler(struct clock_event_device *dev, int broadcast); |
| 28 | |
| 29 | #else /* !BROADCAST */ |
| 30 | |
| 31 | static inline int tick_check_broadcast_device(struct clock_event_device *dev) |
| 32 | { |
| 33 | return 0; |
| 34 | } |
| 35 | |
| 36 | static inline int tick_is_broadcast_device(struct clock_event_device *dev) |
| 37 | { |
| 38 | return 0; |
| 39 | } |
| 40 | static inline int tick_device_uses_broadcast(struct clock_event_device *dev, |
| 41 | int cpu) |
| 42 | { |
| 43 | return 0; |
| 44 | } |
| 45 | static inline void tick_do_periodic_broadcast(struct clock_event_device *d) { } |
| 46 | static inline void tick_broadcast_on_off(unsigned long reason, int *oncpu) { } |
| 47 | static inline void tick_shutdown_broadcast(unsigned int *cpup) { } |
| 48 | |
| 49 | /* |
| 50 | * Set the periodic handler in non broadcast mode |
| 51 | */ |
| 52 | static inline void tick_set_periodic_handler(struct clock_event_device *dev, |
| 53 | int broadcast) |
| 54 | { |
| 55 | dev->event_handler = tick_handle_periodic; |
| 56 | } |
| 57 | #endif /* !BROADCAST */ |
| 58 | |
| 59 | /* |
| 60 | * Check, if the device is functional or a dummy for broadcast |
| 61 | */ |
| 62 | static inline int tick_device_is_functional(struct clock_event_device *dev) |
| 63 | { |
| 64 | return !(dev->features & CLOCK_EVT_FEAT_DUMMY); |
| 65 | } |