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 *)); | |
cd05a1f8 | 22 | extern void tick_resume_oneshot(void); |
79bf2bb3 TG |
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); | |
cd05a1f8 | 28 | extern int tick_resume_broadcast_oneshot(struct clock_event_device *bc); |
79bf2bb3 TG |
29 | # else /* BROADCAST */ |
30 | static inline void tick_broadcast_setup_oneshot(struct clock_event_device *bc) | |
31 | { | |
32 | BUG(); | |
33 | } | |
34 | static inline void tick_broadcast_oneshot_control(unsigned long reason) { } | |
35 | static inline void tick_broadcast_switch_to_oneshot(void) { } | |
36 | static inline void tick_shutdown_broadcast_oneshot(unsigned int *cpup) { } | |
37 | # endif /* !BROADCAST */ | |
38 | ||
39 | #else /* !ONESHOT */ | |
40 | static inline | |
41 | void tick_setup_oneshot(struct clock_event_device *newdev, | |
42 | void (*handler)(struct clock_event_device *), | |
43 | ktime_t nextevt) | |
44 | { | |
45 | BUG(); | |
46 | } | |
cd05a1f8 TG |
47 | static inline void tick_resume_oneshot(void) |
48 | { | |
49 | BUG(); | |
50 | } | |
79bf2bb3 TG |
51 | static inline int tick_program_event(ktime_t expires, int force) |
52 | { | |
53 | return 0; | |
54 | } | |
55 | static inline void tick_oneshot_notify(void) { } | |
56 | static inline void tick_broadcast_setup_oneshot(struct clock_event_device *bc) | |
57 | { | |
58 | BUG(); | |
59 | } | |
60 | static inline void tick_broadcast_oneshot_control(unsigned long reason) { } | |
61 | static inline void tick_shutdown_broadcast_oneshot(unsigned int *cpup) { } | |
cd05a1f8 TG |
62 | static inline int tick_resume_broadcast_oneshot(struct clock_event_device *bc) |
63 | { | |
64 | return 0; | |
65 | } | |
79bf2bb3 TG |
66 | #endif /* !TICK_ONESHOT */ |
67 | ||
f8381cba TG |
68 | /* |
69 | * Broadcasting support | |
70 | */ | |
71 | #ifdef CONFIG_GENERIC_CLOCKEVENTS_BROADCAST | |
72 | extern int tick_do_broadcast(cpumask_t mask); | |
f8381cba TG |
73 | |
74 | extern int tick_device_uses_broadcast(struct clock_event_device *dev, int cpu); | |
75 | extern int tick_check_broadcast_device(struct clock_event_device *dev); | |
76 | extern int tick_is_broadcast_device(struct clock_event_device *dev); | |
77 | extern void tick_broadcast_on_off(unsigned long reason, int *oncpu); | |
78 | extern void tick_shutdown_broadcast(unsigned int *cpup); | |
6321dd60 TG |
79 | extern void tick_suspend_broadcast(void); |
80 | extern int tick_resume_broadcast(void); | |
f8381cba TG |
81 | |
82 | extern void | |
83 | tick_set_periodic_handler(struct clock_event_device *dev, int broadcast); | |
84 | ||
85 | #else /* !BROADCAST */ | |
86 | ||
87 | static inline int tick_check_broadcast_device(struct clock_event_device *dev) | |
88 | { | |
89 | return 0; | |
90 | } | |
91 | ||
92 | static inline int tick_is_broadcast_device(struct clock_event_device *dev) | |
93 | { | |
94 | return 0; | |
95 | } | |
96 | static inline int tick_device_uses_broadcast(struct clock_event_device *dev, | |
97 | int cpu) | |
98 | { | |
99 | return 0; | |
100 | } | |
101 | static inline void tick_do_periodic_broadcast(struct clock_event_device *d) { } | |
102 | static inline void tick_broadcast_on_off(unsigned long reason, int *oncpu) { } | |
103 | static inline void tick_shutdown_broadcast(unsigned int *cpup) { } | |
6321dd60 TG |
104 | static inline void tick_suspend_broadcast(void) { } |
105 | static inline int tick_resume_broadcast(void) { return 0; } | |
f8381cba TG |
106 | |
107 | /* | |
108 | * Set the periodic handler in non broadcast mode | |
109 | */ | |
110 | static inline void tick_set_periodic_handler(struct clock_event_device *dev, | |
111 | int broadcast) | |
112 | { | |
113 | dev->event_handler = tick_handle_periodic; | |
114 | } | |
115 | #endif /* !BROADCAST */ | |
116 | ||
117 | /* | |
118 | * Check, if the device is functional or a dummy for broadcast | |
119 | */ | |
120 | static inline int tick_device_is_functional(struct clock_event_device *dev) | |
121 | { | |
122 | return !(dev->features & CLOCK_EVT_FEAT_DUMMY); | |
123 | } |