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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); | |
21f7eca5 | 13 | extern int do_settimeofday64(const struct timespec64 *ts); |
8b094cd0 TG |
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); | |
d6d29896 TG |
30 | extern void ktime_get_ts64(struct timespec64 *ts); |
31 | ||
32 | extern int __getnstimeofday64(struct timespec64 *tv); | |
33 | extern void getnstimeofday64(struct timespec64 *tv); | |
34 | ||
35 | #if BITS_PER_LONG == 64 | |
21f7eca5 | 36 | /** |
37 | * Deprecated. Use do_settimeofday64(). | |
38 | */ | |
39 | static inline int do_settimeofday(const struct timespec *ts) | |
40 | { | |
41 | return do_settimeofday64(ts); | |
42 | } | |
43 | ||
d6d29896 TG |
44 | static inline int __getnstimeofday(struct timespec *ts) |
45 | { | |
46 | return __getnstimeofday64(ts); | |
47 | } | |
48 | ||
49 | static inline void getnstimeofday(struct timespec *ts) | |
50 | { | |
51 | getnstimeofday64(ts); | |
52 | } | |
53 | ||
54 | static inline void ktime_get_ts(struct timespec *ts) | |
55 | { | |
56 | ktime_get_ts64(ts); | |
57 | } | |
58 | ||
59 | static inline void ktime_get_real_ts(struct timespec *ts) | |
60 | { | |
61 | getnstimeofday64(ts); | |
62 | } | |
63 | ||
64 | #else | |
21f7eca5 | 65 | /** |
66 | * Deprecated. Use do_settimeofday64(). | |
67 | */ | |
68 | static inline int do_settimeofday(const struct timespec *ts) | |
69 | { | |
70 | struct timespec64 ts64; | |
71 | ||
72 | ts64 = timespec_to_timespec64(*ts); | |
73 | return do_settimeofday64(&ts64); | |
74 | } | |
75 | ||
d6d29896 TG |
76 | static inline int __getnstimeofday(struct timespec *ts) |
77 | { | |
78 | struct timespec64 ts64; | |
79 | int ret = __getnstimeofday64(&ts64); | |
80 | ||
81 | *ts = timespec64_to_timespec(ts64); | |
82 | return ret; | |
83 | } | |
84 | ||
85 | static inline void getnstimeofday(struct timespec *ts) | |
86 | { | |
87 | struct timespec64 ts64; | |
88 | ||
89 | getnstimeofday64(&ts64); | |
90 | *ts = timespec64_to_timespec(ts64); | |
91 | } | |
92 | ||
93 | static inline void ktime_get_ts(struct timespec *ts) | |
94 | { | |
95 | struct timespec64 ts64; | |
96 | ||
97 | ktime_get_ts64(&ts64); | |
98 | *ts = timespec64_to_timespec(ts64); | |
99 | } | |
100 | ||
101 | static inline void ktime_get_real_ts(struct timespec *ts) | |
102 | { | |
103 | struct timespec64 ts64; | |
104 | ||
105 | getnstimeofday64(&ts64); | |
106 | *ts = timespec64_to_timespec(ts64); | |
107 | } | |
108 | #endif | |
8b094cd0 | 109 | |
8b094cd0 TG |
110 | extern void getboottime(struct timespec *ts); |
111 | ||
112 | #define do_posix_clock_monotonic_gettime(ts) ktime_get_ts(ts) | |
d6d29896 | 113 | #define ktime_get_real_ts64(ts) getnstimeofday64(ts) |
8b094cd0 TG |
114 | |
115 | /* | |
116 | * ktime_t based interfaces | |
117 | */ | |
0077dc60 TG |
118 | |
119 | enum tk_offsets { | |
120 | TK_OFFS_REAL, | |
121 | TK_OFFS_BOOT, | |
122 | TK_OFFS_TAI, | |
123 | TK_OFFS_MAX, | |
124 | }; | |
125 | ||
8b094cd0 | 126 | extern ktime_t ktime_get(void); |
0077dc60 | 127 | extern ktime_t ktime_get_with_offset(enum tk_offsets offs); |
9a6b5197 | 128 | extern ktime_t ktime_mono_to_any(ktime_t tmono, enum tk_offsets offs); |
f519b1a2 | 129 | extern ktime_t ktime_get_raw(void); |
8b094cd0 | 130 | |
f5264d5d TG |
131 | /** |
132 | * ktime_get_real - get the real (wall-) time in ktime_t format | |
133 | */ | |
134 | static inline ktime_t ktime_get_real(void) | |
135 | { | |
136 | return ktime_get_with_offset(TK_OFFS_REAL); | |
137 | } | |
138 | ||
b82c817e TG |
139 | /** |
140 | * ktime_get_boottime - Returns monotonic time since boot in ktime_t format | |
141 | * | |
142 | * This is similar to CLOCK_MONTONIC/ktime_get, but also includes the | |
143 | * time spent in suspend. | |
144 | */ | |
145 | static inline ktime_t ktime_get_boottime(void) | |
146 | { | |
147 | return ktime_get_with_offset(TK_OFFS_BOOT); | |
148 | } | |
149 | ||
afab07c0 TG |
150 | /** |
151 | * ktime_get_clocktai - Returns the TAI time of day in ktime_t format | |
152 | */ | |
153 | static inline ktime_t ktime_get_clocktai(void) | |
154 | { | |
155 | return ktime_get_with_offset(TK_OFFS_TAI); | |
156 | } | |
157 | ||
9a6b5197 TG |
158 | /** |
159 | * ktime_mono_to_real - Convert monotonic time to clock realtime | |
160 | */ | |
161 | static inline ktime_t ktime_mono_to_real(ktime_t mono) | |
162 | { | |
163 | return ktime_mono_to_any(mono, TK_OFFS_REAL); | |
164 | } | |
165 | ||
897994e3 TG |
166 | static inline u64 ktime_get_ns(void) |
167 | { | |
168 | return ktime_to_ns(ktime_get()); | |
169 | } | |
170 | ||
171 | static inline u64 ktime_get_real_ns(void) | |
172 | { | |
173 | return ktime_to_ns(ktime_get_real()); | |
174 | } | |
175 | ||
176 | static inline u64 ktime_get_boot_ns(void) | |
177 | { | |
178 | return ktime_to_ns(ktime_get_boottime()); | |
179 | } | |
180 | ||
f519b1a2 TG |
181 | static inline u64 ktime_get_raw_ns(void) |
182 | { | |
183 | return ktime_to_ns(ktime_get_raw()); | |
184 | } | |
185 | ||
4396e058 TG |
186 | extern u64 ktime_get_mono_fast_ns(void); |
187 | ||
48f18fd6 TG |
188 | /* |
189 | * Timespec interfaces utilizing the ktime based ones | |
190 | */ | |
191 | static inline void get_monotonic_boottime(struct timespec *ts) | |
192 | { | |
193 | *ts = ktime_to_timespec(ktime_get_boottime()); | |
194 | } | |
195 | ||
61edec81 TG |
196 | static inline void timekeeping_clocktai(struct timespec *ts) |
197 | { | |
198 | *ts = ktime_to_timespec(ktime_get_clocktai()); | |
199 | } | |
200 | ||
8b094cd0 TG |
201 | /* |
202 | * RTC specific | |
203 | */ | |
204 | extern void timekeeping_inject_sleeptime(struct timespec *delta); | |
205 | ||
206 | /* | |
207 | * PPS accessor | |
208 | */ | |
209 | extern void getnstime_raw_and_real(struct timespec *ts_raw, | |
210 | struct timespec *ts_real); | |
211 | ||
212 | /* | |
213 | * Persistent clock related interfaces | |
214 | */ | |
215 | extern bool persistent_clock_exist; | |
216 | extern int persistent_clock_is_local; | |
217 | ||
218 | static inline bool has_persistent_clock(void) | |
219 | { | |
220 | return persistent_clock_exist; | |
221 | } | |
222 | ||
223 | extern void read_persistent_clock(struct timespec *ts); | |
224 | extern void read_boot_clock(struct timespec *ts); | |
225 | extern int update_persistent_clock(struct timespec now); | |
226 | ||
227 | ||
228 | #endif |