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timekeeping: Clean up ktime_get_real_ts64

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In a move to make ktime_get_*() the preferred driver interface into the
timekeeping code, sanitizes ktime_get_real_ts64() to be a proper exported
symbol rather than an alias for getnstimeofday64().

The internal __getnstimeofday64() is no longer used, so remove that
and merge it into ktime_get_real_ts64().

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Stephen Boyd <sboyd@kernel.org>
Cc: y2038@lists.linaro.org
Cc: John Stultz <john.stultz@linaro.org>
Link: https://lkml.kernel.org/r/20180427134016.2525989-3-arnd@arndb.de
This commit is contained in:
Arnd Bergmann
2018-04-27 15:40:13 +02:00
committed by Thomas Gleixner
parent 4f0fad9a60
commit edca71fecb
3 changed files with 13 additions and 39 deletions
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31
kernel/time/timekeeping.c
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@@ -705,18 +705,19 @@ static void timekeeping_forward_now(struct timekeeper *tk)
}
/**
* __getnstimeofday64 - Returns the time of day in a timespec64.
* ktime_get_real_ts64 - Returns the time of day in a timespec64.
* @ts: pointer to the timespec to be set
*
* Updates the time of day in the timespec.
* Returns 0 on success, or -ve when suspended (timespec will be undefined).
* Returns the time of day in a timespec64 (WARN if suspended).
*/
int __getnstimeofday64(struct timespec64 *ts)
void ktime_get_real_ts64(struct timespec64 *ts)
{
struct timekeeper *tk = &tk_core.timekeeper;
unsigned long seq;
u64 nsecs;
WARN_ON(timekeeping_suspended);
do {
seq = read_seqcount_begin(&tk_core.seq);
@@ -727,28 +728,8 @@ int __getnstimeofday64(struct timespec64 *ts)
ts->tv_nsec = 0;
timespec64_add_ns(ts, nsecs);
/*
* Do not bail out early, in case there were callers still using
* the value, even in the face of the WARN_ON.
*/
if (unlikely(timekeeping_suspended))
return -EAGAIN;
return 0;
}
EXPORT_SYMBOL(__getnstimeofday64);
/**
* getnstimeofday64 - Returns the time of day in a timespec64.
* @ts: pointer to the timespec64 to be set
*
* Returns the time of day in a timespec64 (WARN if suspended).
*/
void getnstimeofday64(struct timespec64 *ts)
{
WARN_ON(__getnstimeofday64(ts));
}
EXPORT_SYMBOL(getnstimeofday64);
EXPORT_SYMBOL(ktime_get_real_ts64);
ktime_t ktime_get(void)
{