Commit | Line | Data |
---|---|---|
f8381cba TG |
1 | /* |
2 | * tick internal variable and functions used by low/high res code | |
3 | */ | |
e2830b5c TH |
4 | #include <linux/hrtimer.h> |
5 | #include <linux/tick.h> | |
6441402b | 6 | |
eb93e4d9 TG |
7 | extern seqlock_t jiffies_lock; |
8 | ||
7cf37e87 | 9 | #ifdef CONFIG_GENERIC_CLOCKEVENTS_BUILD |
6441402b TG |
10 | |
11 | #define TICK_DO_TIMER_NONE -1 | |
12 | #define TICK_DO_TIMER_BOOT -2 | |
13 | ||
f8381cba | 14 | DECLARE_PER_CPU(struct tick_device, tick_cpu_device); |
f8381cba TG |
15 | extern ktime_t tick_next_period; |
16 | extern ktime_t tick_period; | |
d3ed7824 | 17 | extern int tick_do_timer_cpu __read_mostly; |
f8381cba TG |
18 | |
19 | extern void tick_setup_periodic(struct clock_event_device *dev, int broadcast); | |
20 | extern void tick_handle_periodic(struct clock_event_device *dev); | |
7172a286 TG |
21 | extern void tick_notify(unsigned long reason, void *dev); |
22 | extern void tick_check_new_device(struct clock_event_device *dev); | |
f8381cba | 23 | |
2344abbc TG |
24 | extern void clockevents_shutdown(struct clock_event_device *dev); |
25 | ||
79bf2bb3 TG |
26 | /* |
27 | * NO_HZ / high resolution timer shared code | |
28 | */ | |
29 | #ifdef CONFIG_TICK_ONESHOT | |
30 | extern void tick_setup_oneshot(struct clock_event_device *newdev, | |
31 | void (*handler)(struct clock_event_device *), | |
32 | ktime_t nextevt); | |
33 | extern int tick_program_event(ktime_t expires, int force); | |
34 | extern void tick_oneshot_notify(void); | |
35 | extern int tick_switch_to_oneshot(void (*handler)(struct clock_event_device *)); | |
cd05a1f8 | 36 | extern void tick_resume_oneshot(void); |
79bf2bb3 TG |
37 | # ifdef CONFIG_GENERIC_CLOCKEVENTS_BROADCAST |
38 | extern void tick_broadcast_setup_oneshot(struct clock_event_device *bc); | |
39 | extern void tick_broadcast_oneshot_control(unsigned long reason); | |
40 | extern void tick_broadcast_switch_to_oneshot(void); | |
41 | extern void tick_shutdown_broadcast_oneshot(unsigned int *cpup); | |
cd05a1f8 | 42 | extern int tick_resume_broadcast_oneshot(struct clock_event_device *bc); |
27ce4cb4 | 43 | extern int tick_broadcast_oneshot_active(void); |
fb02fbc1 | 44 | extern void tick_check_oneshot_broadcast(int cpu); |
3a142a06 | 45 | bool tick_broadcast_oneshot_available(void); |
79bf2bb3 TG |
46 | # else /* BROADCAST */ |
47 | static inline void tick_broadcast_setup_oneshot(struct clock_event_device *bc) | |
48 | { | |
49 | BUG(); | |
50 | } | |
51 | static inline void tick_broadcast_oneshot_control(unsigned long reason) { } | |
52 | static inline void tick_broadcast_switch_to_oneshot(void) { } | |
53 | static inline void tick_shutdown_broadcast_oneshot(unsigned int *cpup) { } | |
27ce4cb4 | 54 | static inline int tick_broadcast_oneshot_active(void) { return 0; } |
fb02fbc1 | 55 | static inline void tick_check_oneshot_broadcast(int cpu) { } |
3a142a06 | 56 | static inline bool tick_broadcast_oneshot_available(void) { return true; } |
79bf2bb3 TG |
57 | # endif /* !BROADCAST */ |
58 | ||
59 | #else /* !ONESHOT */ | |
60 | static inline | |
61 | void tick_setup_oneshot(struct clock_event_device *newdev, | |
62 | void (*handler)(struct clock_event_device *), | |
63 | ktime_t nextevt) | |
64 | { | |
65 | BUG(); | |
66 | } | |
cd05a1f8 TG |
67 | static inline void tick_resume_oneshot(void) |
68 | { | |
69 | BUG(); | |
70 | } | |
79bf2bb3 TG |
71 | static inline int tick_program_event(ktime_t expires, int force) |
72 | { | |
73 | return 0; | |
74 | } | |
75 | static inline void tick_oneshot_notify(void) { } | |
76 | static inline void tick_broadcast_setup_oneshot(struct clock_event_device *bc) | |
77 | { | |
78 | BUG(); | |
79 | } | |
80 | static inline void tick_broadcast_oneshot_control(unsigned long reason) { } | |
81 | static inline void tick_shutdown_broadcast_oneshot(unsigned int *cpup) { } | |
cd05a1f8 TG |
82 | static inline int tick_resume_broadcast_oneshot(struct clock_event_device *bc) |
83 | { | |
84 | return 0; | |
85 | } | |
f8e256c6 | 86 | static inline int tick_broadcast_oneshot_active(void) { return 0; } |
3a142a06 | 87 | static inline bool tick_broadcast_oneshot_available(void) { return false; } |
79bf2bb3 TG |
88 | #endif /* !TICK_ONESHOT */ |
89 | ||
f8381cba TG |
90 | /* |
91 | * Broadcasting support | |
92 | */ | |
93 | #ifdef CONFIG_GENERIC_CLOCKEVENTS_BROADCAST | |
f8381cba | 94 | extern int tick_device_uses_broadcast(struct clock_event_device *dev, int cpu); |
7172a286 | 95 | extern void tick_install_broadcast_device(struct clock_event_device *dev); |
f8381cba TG |
96 | extern int tick_is_broadcast_device(struct clock_event_device *dev); |
97 | extern void tick_broadcast_on_off(unsigned long reason, int *oncpu); | |
98 | extern void tick_shutdown_broadcast(unsigned int *cpup); | |
6321dd60 TG |
99 | extern void tick_suspend_broadcast(void); |
100 | extern int tick_resume_broadcast(void); | |
b352bc1c | 101 | extern void tick_broadcast_init(void); |
f8381cba TG |
102 | extern void |
103 | tick_set_periodic_handler(struct clock_event_device *dev, int broadcast); | |
104 | ||
105 | #else /* !BROADCAST */ | |
106 | ||
7172a286 | 107 | static inline void tick_install_broadcast_device(struct clock_event_device *dev) |
f8381cba | 108 | { |
f8381cba TG |
109 | } |
110 | ||
111 | static inline int tick_is_broadcast_device(struct clock_event_device *dev) | |
112 | { | |
113 | return 0; | |
114 | } | |
115 | static inline int tick_device_uses_broadcast(struct clock_event_device *dev, | |
116 | int cpu) | |
117 | { | |
118 | return 0; | |
119 | } | |
120 | static inline void tick_do_periodic_broadcast(struct clock_event_device *d) { } | |
121 | static inline void tick_broadcast_on_off(unsigned long reason, int *oncpu) { } | |
122 | static inline void tick_shutdown_broadcast(unsigned int *cpup) { } | |
6321dd60 TG |
123 | static inline void tick_suspend_broadcast(void) { } |
124 | static inline int tick_resume_broadcast(void) { return 0; } | |
b352bc1c | 125 | static inline void tick_broadcast_init(void) { } |
f8381cba TG |
126 | |
127 | /* | |
128 | * Set the periodic handler in non broadcast mode | |
129 | */ | |
130 | static inline void tick_set_periodic_handler(struct clock_event_device *dev, | |
131 | int broadcast) | |
132 | { | |
133 | dev->event_handler = tick_handle_periodic; | |
134 | } | |
135 | #endif /* !BROADCAST */ | |
136 | ||
137 | /* | |
138 | * Check, if the device is functional or a dummy for broadcast | |
139 | */ | |
140 | static inline int tick_device_is_functional(struct clock_event_device *dev) | |
141 | { | |
142 | return !(dev->features & CLOCK_EVT_FEAT_DUMMY); | |
143 | } | |
e2830b5c | 144 | |
7cf37e87 TG |
145 | #endif |
146 | ||
e2830b5c | 147 | extern void do_timer(unsigned long ticks); |