| /* |
| * tick internal variable and functions used by low/high res code |
| */ |
| #include <linux/hrtimer.h> |
| #include <linux/tick.h> |
| |
| extern seqlock_t jiffies_lock; |
| |
| #ifdef CONFIG_GENERIC_CLOCKEVENTS_BUILD |
| |
| #define TICK_DO_TIMER_NONE -1 |
| #define TICK_DO_TIMER_BOOT -2 |
| |
| DECLARE_PER_CPU(struct tick_device, tick_cpu_device); |
| extern ktime_t tick_next_period; |
| extern ktime_t tick_period; |
| extern int tick_do_timer_cpu __read_mostly; |
| |
| extern void tick_setup_periodic(struct clock_event_device *dev, int broadcast); |
| extern void tick_handle_periodic(struct clock_event_device *dev); |
| extern void tick_notify(unsigned long reason, void *dev); |
| extern void tick_check_new_device(struct clock_event_device *dev); |
| |
| extern void clockevents_shutdown(struct clock_event_device *dev); |
| |
| /* |
| * NO_HZ / high resolution timer shared code |
| */ |
| #ifdef CONFIG_TICK_ONESHOT |
| extern void tick_setup_oneshot(struct clock_event_device *newdev, |
| void (*handler)(struct clock_event_device *), |
| ktime_t nextevt); |
| extern int tick_program_event(ktime_t expires, int force); |
| extern void tick_oneshot_notify(void); |
| extern int tick_switch_to_oneshot(void (*handler)(struct clock_event_device *)); |
| extern void tick_resume_oneshot(void); |
| # ifdef CONFIG_GENERIC_CLOCKEVENTS_BROADCAST |
| extern void tick_broadcast_setup_oneshot(struct clock_event_device *bc); |
| extern void tick_broadcast_oneshot_control(unsigned long reason); |
| extern void tick_broadcast_switch_to_oneshot(void); |
| extern void tick_shutdown_broadcast_oneshot(unsigned int *cpup); |
| extern int tick_resume_broadcast_oneshot(struct clock_event_device *bc); |
| extern int tick_broadcast_oneshot_active(void); |
| extern void tick_check_oneshot_broadcast(int cpu); |
| bool tick_broadcast_oneshot_available(void); |
| # else /* BROADCAST */ |
| static inline void tick_broadcast_setup_oneshot(struct clock_event_device *bc) |
| { |
| BUG(); |
| } |
| static inline void tick_broadcast_oneshot_control(unsigned long reason) { } |
| static inline void tick_broadcast_switch_to_oneshot(void) { } |
| static inline void tick_shutdown_broadcast_oneshot(unsigned int *cpup) { } |
| static inline int tick_broadcast_oneshot_active(void) { return 0; } |
| static inline void tick_check_oneshot_broadcast(int cpu) { } |
| static inline bool tick_broadcast_oneshot_available(void) { return true; } |
| # endif /* !BROADCAST */ |
| |
| #else /* !ONESHOT */ |
| static inline |
| void tick_setup_oneshot(struct clock_event_device *newdev, |
| void (*handler)(struct clock_event_device *), |
| ktime_t nextevt) |
| { |
| BUG(); |
| } |
| static inline void tick_resume_oneshot(void) |
| { |
| BUG(); |
| } |
| static inline int tick_program_event(ktime_t expires, int force) |
| { |
| return 0; |
| } |
| static inline void tick_oneshot_notify(void) { } |
| static inline void tick_broadcast_setup_oneshot(struct clock_event_device *bc) |
| { |
| BUG(); |
| } |
| static inline void tick_broadcast_oneshot_control(unsigned long reason) { } |
| static inline void tick_shutdown_broadcast_oneshot(unsigned int *cpup) { } |
| static inline int tick_resume_broadcast_oneshot(struct clock_event_device *bc) |
| { |
| return 0; |
| } |
| static inline int tick_broadcast_oneshot_active(void) { return 0; } |
| static inline bool tick_broadcast_oneshot_available(void) { return false; } |
| #endif /* !TICK_ONESHOT */ |
| |
| /* |
| * Broadcasting support |
| */ |
| #ifdef CONFIG_GENERIC_CLOCKEVENTS_BROADCAST |
| extern int tick_device_uses_broadcast(struct clock_event_device *dev, int cpu); |
| extern void tick_install_broadcast_device(struct clock_event_device *dev); |
| extern int tick_is_broadcast_device(struct clock_event_device *dev); |
| extern void tick_broadcast_on_off(unsigned long reason, int *oncpu); |
| extern void tick_shutdown_broadcast(unsigned int *cpup); |
| extern void tick_suspend_broadcast(void); |
| extern int tick_resume_broadcast(void); |
| extern void tick_broadcast_init(void); |
| extern void |
| tick_set_periodic_handler(struct clock_event_device *dev, int broadcast); |
| |
| #else /* !BROADCAST */ |
| |
| static inline void tick_install_broadcast_device(struct clock_event_device *dev) |
| { |
| } |
| |
| static inline int tick_is_broadcast_device(struct clock_event_device *dev) |
| { |
| return 0; |
| } |
| static inline int tick_device_uses_broadcast(struct clock_event_device *dev, |
| int cpu) |
| { |
| return 0; |
| } |
| static inline void tick_do_periodic_broadcast(struct clock_event_device *d) { } |
| static inline void tick_broadcast_on_off(unsigned long reason, int *oncpu) { } |
| static inline void tick_shutdown_broadcast(unsigned int *cpup) { } |
| static inline void tick_suspend_broadcast(void) { } |
| static inline int tick_resume_broadcast(void) { return 0; } |
| static inline void tick_broadcast_init(void) { } |
| |
| /* |
| * Set the periodic handler in non broadcast mode |
| */ |
| static inline void tick_set_periodic_handler(struct clock_event_device *dev, |
| int broadcast) |
| { |
| dev->event_handler = tick_handle_periodic; |
| } |
| #endif /* !BROADCAST */ |
| |
| /* |
| * Check, if the device is functional or a dummy for broadcast |
| */ |
| static inline int tick_device_is_functional(struct clock_event_device *dev) |
| { |
| return !(dev->features & CLOCK_EVT_FEAT_DUMMY); |
| } |
| |
| #endif |
| |
| extern void do_timer(unsigned long ticks); |