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8b094cd0 TG |
1 | #ifndef _LINUX_TIMEKEEPING_H |
2 | #define _LINUX_TIMEKEEPING_H | |
3 | ||
4 | /* Included from linux/ktime.h */ | |
5 | ||
6 | void timekeeping_init(void); | |
7 | extern int timekeeping_suspended; | |
8 | ||
9 | /* | |
10 | * Get and set timeofday | |
11 | */ | |
12 | extern void do_gettimeofday(struct timeval *tv); | |
13 | extern int do_settimeofday(const struct timespec *tv); | |
14 | extern int do_sys_settimeofday(const struct timespec *tv, | |
15 | const struct timezone *tz); | |
16 | ||
17 | /* | |
18 | * Kernel time accessors | |
19 | */ | |
20 | unsigned long get_seconds(void); | |
21 | struct timespec current_kernel_time(void); | |
22 | /* does not take xtime_lock */ | |
23 | struct timespec __current_kernel_time(void); | |
24 | ||
25 | /* | |
26 | * timespec based interfaces | |
27 | */ | |
28 | struct timespec get_monotonic_coarse(void); | |
29 | extern void getrawmonotonic(struct timespec *ts); | |
8b094cd0 | 30 | extern void get_monotonic_boottime(struct timespec *ts); |
d6d29896 TG |
31 | extern void ktime_get_ts64(struct timespec64 *ts); |
32 | ||
33 | extern int __getnstimeofday64(struct timespec64 *tv); | |
34 | extern void getnstimeofday64(struct timespec64 *tv); | |
35 | ||
36 | #if BITS_PER_LONG == 64 | |
37 | static inline int __getnstimeofday(struct timespec *ts) | |
38 | { | |
39 | return __getnstimeofday64(ts); | |
40 | } | |
41 | ||
42 | static inline void getnstimeofday(struct timespec *ts) | |
43 | { | |
44 | getnstimeofday64(ts); | |
45 | } | |
46 | ||
47 | static inline void ktime_get_ts(struct timespec *ts) | |
48 | { | |
49 | ktime_get_ts64(ts); | |
50 | } | |
51 | ||
52 | static inline void ktime_get_real_ts(struct timespec *ts) | |
53 | { | |
54 | getnstimeofday64(ts); | |
55 | } | |
56 | ||
57 | #else | |
58 | static inline int __getnstimeofday(struct timespec *ts) | |
59 | { | |
60 | struct timespec64 ts64; | |
61 | int ret = __getnstimeofday64(&ts64); | |
62 | ||
63 | *ts = timespec64_to_timespec(ts64); | |
64 | return ret; | |
65 | } | |
66 | ||
67 | static inline void getnstimeofday(struct timespec *ts) | |
68 | { | |
69 | struct timespec64 ts64; | |
70 | ||
71 | getnstimeofday64(&ts64); | |
72 | *ts = timespec64_to_timespec(ts64); | |
73 | } | |
74 | ||
75 | static inline void ktime_get_ts(struct timespec *ts) | |
76 | { | |
77 | struct timespec64 ts64; | |
78 | ||
79 | ktime_get_ts64(&ts64); | |
80 | *ts = timespec64_to_timespec(ts64); | |
81 | } | |
82 | ||
83 | static inline void ktime_get_real_ts(struct timespec *ts) | |
84 | { | |
85 | struct timespec64 ts64; | |
86 | ||
87 | getnstimeofday64(&ts64); | |
88 | *ts = timespec64_to_timespec(ts64); | |
89 | } | |
90 | #endif | |
8b094cd0 | 91 | |
8b094cd0 TG |
92 | extern void getboottime(struct timespec *ts); |
93 | ||
94 | #define do_posix_clock_monotonic_gettime(ts) ktime_get_ts(ts) | |
d6d29896 | 95 | #define ktime_get_real_ts64(ts) getnstimeofday64(ts) |
8b094cd0 TG |
96 | |
97 | /* | |
98 | * ktime_t based interfaces | |
99 | */ | |
0077dc60 TG |
100 | |
101 | enum tk_offsets { | |
102 | TK_OFFS_REAL, | |
103 | TK_OFFS_BOOT, | |
104 | TK_OFFS_TAI, | |
105 | TK_OFFS_MAX, | |
106 | }; | |
107 | ||
8b094cd0 | 108 | extern ktime_t ktime_get(void); |
0077dc60 | 109 | extern ktime_t ktime_get_with_offset(enum tk_offsets offs); |
9a6b5197 | 110 | extern ktime_t ktime_mono_to_any(ktime_t tmono, enum tk_offsets offs); |
8b094cd0 | 111 | |
f5264d5d TG |
112 | /** |
113 | * ktime_get_real - get the real (wall-) time in ktime_t format | |
114 | */ | |
115 | static inline ktime_t ktime_get_real(void) | |
116 | { | |
117 | return ktime_get_with_offset(TK_OFFS_REAL); | |
118 | } | |
119 | ||
b82c817e TG |
120 | /** |
121 | * ktime_get_boottime - Returns monotonic time since boot in ktime_t format | |
122 | * | |
123 | * This is similar to CLOCK_MONTONIC/ktime_get, but also includes the | |
124 | * time spent in suspend. | |
125 | */ | |
126 | static inline ktime_t ktime_get_boottime(void) | |
127 | { | |
128 | return ktime_get_with_offset(TK_OFFS_BOOT); | |
129 | } | |
130 | ||
afab07c0 TG |
131 | /** |
132 | * ktime_get_clocktai - Returns the TAI time of day in ktime_t format | |
133 | */ | |
134 | static inline ktime_t ktime_get_clocktai(void) | |
135 | { | |
136 | return ktime_get_with_offset(TK_OFFS_TAI); | |
137 | } | |
138 | ||
9a6b5197 TG |
139 | /** |
140 | * ktime_mono_to_real - Convert monotonic time to clock realtime | |
141 | */ | |
142 | static inline ktime_t ktime_mono_to_real(ktime_t mono) | |
143 | { | |
144 | return ktime_mono_to_any(mono, TK_OFFS_REAL); | |
145 | } | |
146 | ||
897994e3 TG |
147 | static inline u64 ktime_get_ns(void) |
148 | { | |
149 | return ktime_to_ns(ktime_get()); | |
150 | } | |
151 | ||
152 | static inline u64 ktime_get_real_ns(void) | |
153 | { | |
154 | return ktime_to_ns(ktime_get_real()); | |
155 | } | |
156 | ||
157 | static inline u64 ktime_get_boot_ns(void) | |
158 | { | |
159 | return ktime_to_ns(ktime_get_boottime()); | |
160 | } | |
161 | ||
8b094cd0 TG |
162 | /* |
163 | * RTC specific | |
164 | */ | |
165 | extern void timekeeping_inject_sleeptime(struct timespec *delta); | |
166 | ||
167 | /* | |
168 | * PPS accessor | |
169 | */ | |
170 | extern void getnstime_raw_and_real(struct timespec *ts_raw, | |
171 | struct timespec *ts_real); | |
172 | ||
173 | /* | |
174 | * Persistent clock related interfaces | |
175 | */ | |
176 | extern bool persistent_clock_exist; | |
177 | extern int persistent_clock_is_local; | |
178 | ||
179 | static inline bool has_persistent_clock(void) | |
180 | { | |
181 | return persistent_clock_exist; | |
182 | } | |
183 | ||
184 | extern void read_persistent_clock(struct timespec *ts); | |
185 | extern void read_boot_clock(struct timespec *ts); | |
186 | extern int update_persistent_clock(struct timespec now); | |
187 | ||
188 | ||
189 | #endif |