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-rw-r--r--kernel/time.c36
1 files changed, 36 insertions, 0 deletions
diff --git a/kernel/time.c b/kernel/time.c
index c689b53..cf5a458 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)
{
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