]>
Commit | Line | Data |
---|---|---|
f8381cba TG |
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 | ||
79bf2bb3 TG |
12 | /* |
13 | * NO_HZ / high resolution timer shared code | |
14 | */ | |
15 | #ifdef CONFIG_TICK_ONESHOT | |
16 | extern void tick_setup_oneshot(struct clock_event_device *newdev, | |
17 | void (*handler)(struct clock_event_device *), | |
18 | ktime_t nextevt); | |
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 *)); | |
22 | ||
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) | |
30 | { | |
31 | BUG(); | |
32 | } | |
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 */ | |
37 | ||
38 | #else /* !ONESHOT */ | |
39 | static inline | |
40 | void tick_setup_oneshot(struct clock_event_device *newdev, | |
41 | void (*handler)(struct clock_event_device *), | |
42 | ktime_t nextevt) | |
43 | { | |
44 | BUG(); | |
45 | } | |
46 | static inline int tick_program_event(ktime_t expires, int force) | |
47 | { | |
48 | return 0; | |
49 | } | |
50 | static inline void tick_oneshot_notify(void) { } | |
51 | static inline void tick_broadcast_setup_oneshot(struct clock_event_device *bc) | |
52 | { | |
53 | BUG(); | |
54 | } | |
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 */ | |
58 | ||
f8381cba TG |
59 | /* |
60 | * Broadcasting support | |
61 | */ | |
62 | #ifdef CONFIG_GENERIC_CLOCKEVENTS_BROADCAST | |
63 | extern int tick_do_broadcast(cpumask_t mask); | |
f8381cba TG |
64 | |
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); | |
70 | ||
71 | extern void | |
72 | tick_set_periodic_handler(struct clock_event_device *dev, int broadcast); | |
73 | ||
74 | #else /* !BROADCAST */ | |
75 | ||
76 | static inline int tick_check_broadcast_device(struct clock_event_device *dev) | |
77 | { | |
78 | return 0; | |
79 | } | |
80 | ||
81 | static inline int tick_is_broadcast_device(struct clock_event_device *dev) | |
82 | { | |
83 | return 0; | |
84 | } | |
85 | static inline int tick_device_uses_broadcast(struct clock_event_device *dev, | |
86 | int cpu) | |
87 | { | |
88 | return 0; | |
89 | } | |
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) { } | |
93 | ||
94 | /* | |
95 | * Set the periodic handler in non broadcast mode | |
96 | */ | |
97 | static inline void tick_set_periodic_handler(struct clock_event_device *dev, | |
98 | int broadcast) | |
99 | { | |
100 | dev->event_handler = tick_handle_periodic; | |
101 | } | |
102 | #endif /* !BROADCAST */ | |
103 | ||
104 | /* | |
105 | * Check, if the device is functional or a dummy for broadcast | |
106 | */ | |
107 | static inline int tick_device_is_functional(struct clock_event_device *dev) | |
108 | { | |
109 | return !(dev->features & CLOCK_EVT_FEAT_DUMMY); | |
110 | } |