Commit | Line | Data |
---|---|---|
f8381cba TG |
1 | /* |
2 | * tick internal variable and functions used by low/high res code | |
3 | */ | |
6441402b TG |
4 | |
5 | #define TICK_DO_TIMER_NONE -1 | |
6 | #define TICK_DO_TIMER_BOOT -2 | |
7 | ||
f8381cba | 8 | DECLARE_PER_CPU(struct tick_device, tick_cpu_device); |
f8381cba TG |
9 | extern ktime_t tick_next_period; |
10 | extern ktime_t tick_period; | |
d3ed7824 | 11 | extern int tick_do_timer_cpu __read_mostly; |
f8381cba TG |
12 | |
13 | extern void tick_setup_periodic(struct clock_event_device *dev, int broadcast); | |
14 | extern void tick_handle_periodic(struct clock_event_device *dev); | |
15 | ||
2344abbc TG |
16 | extern void clockevents_shutdown(struct clock_event_device *dev); |
17 | ||
79bf2bb3 TG |
18 | /* |
19 | * NO_HZ / high resolution timer shared code | |
20 | */ | |
21 | #ifdef CONFIG_TICK_ONESHOT | |
22 | extern void tick_setup_oneshot(struct clock_event_device *newdev, | |
23 | void (*handler)(struct clock_event_device *), | |
24 | ktime_t nextevt); | |
1fb9b7d2 TG |
25 | extern int tick_dev_program_event(struct clock_event_device *dev, |
26 | ktime_t expires, int force); | |
79bf2bb3 TG |
27 | extern int tick_program_event(ktime_t expires, int force); |
28 | extern void tick_oneshot_notify(void); | |
29 | extern int tick_switch_to_oneshot(void (*handler)(struct clock_event_device *)); | |
cd05a1f8 | 30 | extern void tick_resume_oneshot(void); |
79bf2bb3 TG |
31 | # ifdef CONFIG_GENERIC_CLOCKEVENTS_BROADCAST |
32 | extern void tick_broadcast_setup_oneshot(struct clock_event_device *bc); | |
33 | extern void tick_broadcast_oneshot_control(unsigned long reason); | |
34 | extern void tick_broadcast_switch_to_oneshot(void); | |
35 | extern void tick_shutdown_broadcast_oneshot(unsigned int *cpup); | |
cd05a1f8 | 36 | extern int tick_resume_broadcast_oneshot(struct clock_event_device *bc); |
27ce4cb4 | 37 | extern int tick_broadcast_oneshot_active(void); |
fb02fbc1 | 38 | extern void tick_check_oneshot_broadcast(int cpu); |
79bf2bb3 TG |
39 | # else /* BROADCAST */ |
40 | static inline void tick_broadcast_setup_oneshot(struct clock_event_device *bc) | |
41 | { | |
42 | BUG(); | |
43 | } | |
44 | static inline void tick_broadcast_oneshot_control(unsigned long reason) { } | |
45 | static inline void tick_broadcast_switch_to_oneshot(void) { } | |
46 | static inline void tick_shutdown_broadcast_oneshot(unsigned int *cpup) { } | |
27ce4cb4 | 47 | static inline int tick_broadcast_oneshot_active(void) { return 0; } |
fb02fbc1 | 48 | static inline void tick_check_oneshot_broadcast(int cpu) { } |
79bf2bb3 TG |
49 | # endif /* !BROADCAST */ |
50 | ||
51 | #else /* !ONESHOT */ | |
52 | static inline | |
53 | void tick_setup_oneshot(struct clock_event_device *newdev, | |
54 | void (*handler)(struct clock_event_device *), | |
55 | ktime_t nextevt) | |
56 | { | |
57 | BUG(); | |
58 | } | |
cd05a1f8 TG |
59 | static inline void tick_resume_oneshot(void) |
60 | { | |
61 | BUG(); | |
62 | } | |
79bf2bb3 TG |
63 | static inline int tick_program_event(ktime_t expires, int force) |
64 | { | |
65 | return 0; | |
66 | } | |
67 | static inline void tick_oneshot_notify(void) { } | |
68 | static inline void tick_broadcast_setup_oneshot(struct clock_event_device *bc) | |
69 | { | |
70 | BUG(); | |
71 | } | |
72 | static inline void tick_broadcast_oneshot_control(unsigned long reason) { } | |
73 | static inline void tick_shutdown_broadcast_oneshot(unsigned int *cpup) { } | |
cd05a1f8 TG |
74 | static inline int tick_resume_broadcast_oneshot(struct clock_event_device *bc) |
75 | { | |
76 | return 0; | |
77 | } | |
f8e256c6 | 78 | static inline int tick_broadcast_oneshot_active(void) { return 0; } |
79bf2bb3 TG |
79 | #endif /* !TICK_ONESHOT */ |
80 | ||
f8381cba TG |
81 | /* |
82 | * Broadcasting support | |
83 | */ | |
84 | #ifdef CONFIG_GENERIC_CLOCKEVENTS_BROADCAST | |
f8381cba TG |
85 | extern int tick_device_uses_broadcast(struct clock_event_device *dev, int cpu); |
86 | extern int tick_check_broadcast_device(struct clock_event_device *dev); | |
87 | extern int tick_is_broadcast_device(struct clock_event_device *dev); | |
88 | extern void tick_broadcast_on_off(unsigned long reason, int *oncpu); | |
89 | extern void tick_shutdown_broadcast(unsigned int *cpup); | |
6321dd60 TG |
90 | extern void tick_suspend_broadcast(void); |
91 | extern int tick_resume_broadcast(void); | |
f8381cba TG |
92 | |
93 | extern void | |
94 | tick_set_periodic_handler(struct clock_event_device *dev, int broadcast); | |
95 | ||
96 | #else /* !BROADCAST */ | |
97 | ||
98 | static inline int tick_check_broadcast_device(struct clock_event_device *dev) | |
99 | { | |
100 | return 0; | |
101 | } | |
102 | ||
103 | static inline int tick_is_broadcast_device(struct clock_event_device *dev) | |
104 | { | |
105 | return 0; | |
106 | } | |
107 | static inline int tick_device_uses_broadcast(struct clock_event_device *dev, | |
108 | int cpu) | |
109 | { | |
110 | return 0; | |
111 | } | |
112 | static inline void tick_do_periodic_broadcast(struct clock_event_device *d) { } | |
113 | static inline void tick_broadcast_on_off(unsigned long reason, int *oncpu) { } | |
114 | static inline void tick_shutdown_broadcast(unsigned int *cpup) { } | |
6321dd60 TG |
115 | static inline void tick_suspend_broadcast(void) { } |
116 | static inline int tick_resume_broadcast(void) { return 0; } | |
f8381cba TG |
117 | |
118 | /* | |
119 | * Set the periodic handler in non broadcast mode | |
120 | */ | |
121 | static inline void tick_set_periodic_handler(struct clock_event_device *dev, | |
122 | int broadcast) | |
123 | { | |
124 | dev->event_handler = tick_handle_periodic; | |
125 | } | |
126 | #endif /* !BROADCAST */ | |
127 | ||
128 | /* | |
129 | * Check, if the device is functional or a dummy for broadcast | |
130 | */ | |
131 | static inline int tick_device_is_functional(struct clock_event_device *dev) | |
132 | { | |
133 | return !(dev->features & CLOCK_EVT_FEAT_DUMMY); | |
134 | } |