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Commit | Line | Data |
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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; | |
d3ed7824 | 8 | extern int tick_do_timer_cpu __read_mostly; |
f8381cba TG |
9 | |
10 | extern void tick_setup_periodic(struct clock_event_device *dev, int broadcast); | |
11 | extern void tick_handle_periodic(struct clock_event_device *dev); | |
12 | ||
79bf2bb3 TG |
13 | /* |
14 | * NO_HZ / high resolution timer shared code | |
15 | */ | |
16 | #ifdef CONFIG_TICK_ONESHOT | |
17 | extern void tick_setup_oneshot(struct clock_event_device *newdev, | |
18 | void (*handler)(struct clock_event_device *), | |
19 | ktime_t nextevt); | |
20 | extern int tick_program_event(ktime_t expires, int force); | |
21 | extern void tick_oneshot_notify(void); | |
22 | extern int tick_switch_to_oneshot(void (*handler)(struct clock_event_device *)); | |
cd05a1f8 | 23 | extern void tick_resume_oneshot(void); |
79bf2bb3 TG |
24 | # ifdef CONFIG_GENERIC_CLOCKEVENTS_BROADCAST |
25 | extern void tick_broadcast_setup_oneshot(struct clock_event_device *bc); | |
26 | extern void tick_broadcast_oneshot_control(unsigned long reason); | |
27 | extern void tick_broadcast_switch_to_oneshot(void); | |
28 | extern void tick_shutdown_broadcast_oneshot(unsigned int *cpup); | |
cd05a1f8 | 29 | extern int tick_resume_broadcast_oneshot(struct clock_event_device *bc); |
79bf2bb3 TG |
30 | # else /* BROADCAST */ |
31 | static inline void tick_broadcast_setup_oneshot(struct clock_event_device *bc) | |
32 | { | |
33 | BUG(); | |
34 | } | |
35 | static inline void tick_broadcast_oneshot_control(unsigned long reason) { } | |
36 | static inline void tick_broadcast_switch_to_oneshot(void) { } | |
37 | static inline void tick_shutdown_broadcast_oneshot(unsigned int *cpup) { } | |
38 | # endif /* !BROADCAST */ | |
39 | ||
40 | #else /* !ONESHOT */ | |
41 | static inline | |
42 | void tick_setup_oneshot(struct clock_event_device *newdev, | |
43 | void (*handler)(struct clock_event_device *), | |
44 | ktime_t nextevt) | |
45 | { | |
46 | BUG(); | |
47 | } | |
cd05a1f8 TG |
48 | static inline void tick_resume_oneshot(void) |
49 | { | |
50 | BUG(); | |
51 | } | |
79bf2bb3 TG |
52 | static inline int tick_program_event(ktime_t expires, int force) |
53 | { | |
54 | return 0; | |
55 | } | |
56 | static inline void tick_oneshot_notify(void) { } | |
57 | static inline void tick_broadcast_setup_oneshot(struct clock_event_device *bc) | |
58 | { | |
59 | BUG(); | |
60 | } | |
61 | static inline void tick_broadcast_oneshot_control(unsigned long reason) { } | |
62 | static inline void tick_shutdown_broadcast_oneshot(unsigned int *cpup) { } | |
cd05a1f8 TG |
63 | static inline int tick_resume_broadcast_oneshot(struct clock_event_device *bc) |
64 | { | |
65 | return 0; | |
66 | } | |
79bf2bb3 TG |
67 | #endif /* !TICK_ONESHOT */ |
68 | ||
f8381cba TG |
69 | /* |
70 | * Broadcasting support | |
71 | */ | |
72 | #ifdef CONFIG_GENERIC_CLOCKEVENTS_BROADCAST | |
f8381cba TG |
73 | extern int tick_device_uses_broadcast(struct clock_event_device *dev, int cpu); |
74 | extern int tick_check_broadcast_device(struct clock_event_device *dev); | |
75 | extern int tick_is_broadcast_device(struct clock_event_device *dev); | |
76 | extern void tick_broadcast_on_off(unsigned long reason, int *oncpu); | |
77 | extern void tick_shutdown_broadcast(unsigned int *cpup); | |
6321dd60 TG |
78 | extern void tick_suspend_broadcast(void); |
79 | extern int tick_resume_broadcast(void); | |
f8381cba TG |
80 | |
81 | extern void | |
82 | tick_set_periodic_handler(struct clock_event_device *dev, int broadcast); | |
83 | ||
84 | #else /* !BROADCAST */ | |
85 | ||
86 | static inline int tick_check_broadcast_device(struct clock_event_device *dev) | |
87 | { | |
88 | return 0; | |
89 | } | |
90 | ||
91 | static inline int tick_is_broadcast_device(struct clock_event_device *dev) | |
92 | { | |
93 | return 0; | |
94 | } | |
95 | static inline int tick_device_uses_broadcast(struct clock_event_device *dev, | |
96 | int cpu) | |
97 | { | |
98 | return 0; | |
99 | } | |
100 | static inline void tick_do_periodic_broadcast(struct clock_event_device *d) { } | |
101 | static inline void tick_broadcast_on_off(unsigned long reason, int *oncpu) { } | |
102 | static inline void tick_shutdown_broadcast(unsigned int *cpup) { } | |
6321dd60 TG |
103 | static inline void tick_suspend_broadcast(void) { } |
104 | static inline int tick_resume_broadcast(void) { return 0; } | |
f8381cba TG |
105 | |
106 | /* | |
107 | * Set the periodic handler in non broadcast mode | |
108 | */ | |
109 | static inline void tick_set_periodic_handler(struct clock_event_device *dev, | |
110 | int broadcast) | |
111 | { | |
112 | dev->event_handler = tick_handle_periodic; | |
113 | } | |
114 | #endif /* !BROADCAST */ | |
115 | ||
116 | /* | |
117 | * Check, if the device is functional or a dummy for broadcast | |
118 | */ | |
119 | static inline int tick_device_is_functional(struct clock_event_device *dev) | |
120 | { | |
121 | return !(dev->features & CLOCK_EVT_FEAT_DUMMY); | |
122 | } |