diff options
| author | Arnd Bergmann <arnd@arndb.de> | 2015-09-28 23:21:29 +0300 |
|---|---|---|
| committer | John Stultz <john.stultz@linaro.org> | 2015-10-01 19:59:01 +0300 |
| commit | 071eee45b1650d53d21c636d344bdcebd4577ed2 (patch) | |
| tree | 3e22cf4327f43092c26e2eb11236379ec7320f2f | |
| parent | 7ec88e4be461590b5a3817460c34603f76d9b3ae (diff) | |
| download | linux-071eee45b1650d53d21c636d344bdcebd4577ed2.tar.xz | |
ntp/pps: replace getnstime_raw_and_real with 64-bit version
There is exactly one caller of getnstime_raw_and_real in the kernel,
which is the pps_get_ts function. This changes the caller and
the implementation to work on timespec64 types rather than timespec,
to avoid the time_t overflow on 32-bit architectures.
For consistency with the other new functions (ktime_get_seconds,
ktime_get_real_*, ...), I'm renaming the function to
ktime_get_raw_and_real_ts64.
We still need to convert from the internal 64-bit type to 32 bit
types in the caller, but this conversion is now pushed out from
getnstime_raw_and_real to pps_get_ts. A follow-up patch changes
the remaining pps code to completely avoid the conversion.
Acked-by: Richard Cochran <richardcochran@gmail.com>
Acked-by: David S. Miller <davem@davemloft.net>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: John Stultz <john.stultz@linaro.org>
| -rw-r--r-- | include/linux/pps_kernel.h | 7 | ||||
| -rw-r--r-- | include/linux/timekeeping.h | 4 | ||||
| -rw-r--r-- | kernel/time/timekeeping.c | 12 |
3 files changed, 14 insertions, 9 deletions
diff --git a/include/linux/pps_kernel.h b/include/linux/pps_kernel.h index 1d2cd21242e8..b2fbd62ab18d 100644 --- a/include/linux/pps_kernel.h +++ b/include/linux/pps_kernel.h @@ -115,7 +115,12 @@ static inline void timespec_to_pps_ktime(struct pps_ktime *kt, static inline void pps_get_ts(struct pps_event_time *ts) { - getnstime_raw_and_real(&ts->ts_raw, &ts->ts_real); + struct timespec64 raw, real; + + ktime_get_raw_and_real_ts64(&raw, &real); + + ts->ts_raw = timespec64_to_timespec(raw); + ts->ts_real = timespec64_to_timespec(real); } #else /* CONFIG_NTP_PPS */ diff --git a/include/linux/timekeeping.h b/include/linux/timekeeping.h index ba0ae09cbb21..ec89d846324c 100644 --- a/include/linux/timekeeping.h +++ b/include/linux/timekeeping.h @@ -263,8 +263,8 @@ extern void timekeeping_inject_sleeptime64(struct timespec64 *delta); /* * PPS accessor */ -extern void getnstime_raw_and_real(struct timespec *ts_raw, - struct timespec *ts_real); +extern void ktime_get_raw_and_real_ts64(struct timespec64 *ts_raw, + struct timespec64 *ts_real); /* * Persistent clock related interfaces diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c index 177188b11a2e..274ed5e88456 100644 --- a/kernel/time/timekeeping.c +++ b/kernel/time/timekeeping.c @@ -849,7 +849,7 @@ EXPORT_SYMBOL_GPL(ktime_get_real_seconds); #ifdef CONFIG_NTP_PPS /** - * getnstime_raw_and_real - get day and raw monotonic time in timespec format + * ktime_get_raw_and_real_ts64 - get day and raw monotonic time in timespec format * @ts_raw: pointer to the timespec to be set to raw monotonic time * @ts_real: pointer to the timespec to be set to the time of day * @@ -857,7 +857,7 @@ EXPORT_SYMBOL_GPL(ktime_get_real_seconds); * same time atomically and stores the resulting timestamps in timespec * format. */ -void getnstime_raw_and_real(struct timespec *ts_raw, struct timespec *ts_real) +void ktime_get_raw_and_real_ts64(struct timespec64 *ts_raw, struct timespec64 *ts_real) { struct timekeeper *tk = &tk_core.timekeeper; unsigned long seq; @@ -868,7 +868,7 @@ void getnstime_raw_and_real(struct timespec *ts_raw, struct timespec *ts_real) do { seq = read_seqcount_begin(&tk_core.seq); - *ts_raw = timespec64_to_timespec(tk->raw_time); + *ts_raw = tk->raw_time; ts_real->tv_sec = tk->xtime_sec; ts_real->tv_nsec = 0; @@ -877,10 +877,10 @@ void getnstime_raw_and_real(struct timespec *ts_raw, struct timespec *ts_real) } while (read_seqcount_retry(&tk_core.seq, seq)); - timespec_add_ns(ts_raw, nsecs_raw); - timespec_add_ns(ts_real, nsecs_real); + timespec64_add_ns(ts_raw, nsecs_raw); + timespec64_add_ns(ts_real, nsecs_real); } -EXPORT_SYMBOL(getnstime_raw_and_real); +EXPORT_SYMBOL(ktime_get_raw_and_real_ts64); #endif /* CONFIG_NTP_PPS */ |