diff options
Diffstat (limited to 'kernel/time.c')
| -rw-r--r-- | kernel/time.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/kernel/time.c b/kernel/time.c index c689b53297c..cf5a4582a67 100644 --- a/kernel/time.c +++ b/kernel/time.c @@ -652,6 +652,42 @@ void set_normalized_timespec(struct timespec *ts, time_t sec, long nsec) ts->tv_nsec = nsec; } +/** + * ns_to_timespec - Convert nanoseconds to timespec + * @nsec: the nanoseconds value to be converted + * + * Returns the timespec representation of the nsec parameter. + */ +inline struct timespec ns_to_timespec(const nsec_t nsec) +{ + struct timespec ts; + + if (nsec) + ts.tv_sec = div_long_long_rem_signed(nsec, NSEC_PER_SEC, + &ts.tv_nsec); + else + ts.tv_sec = ts.tv_nsec = 0; + + return ts; +} + +/** + * ns_to_timeval - Convert nanoseconds to timeval + * @nsec: the nanoseconds value to be converted + * + * Returns the timeval representation of the nsec parameter. + */ +struct timeval ns_to_timeval(const nsec_t nsec) +{ + struct timespec ts = ns_to_timespec(nsec); + struct timeval tv; + + tv.tv_sec = ts.tv_sec; + tv.tv_usec = (suseconds_t) ts.tv_nsec / 1000; + + return tv; +} + #if (BITS_PER_LONG < 64) u64 get_jiffies_64(void) { |