+static inline s64 ktime_us_delta(const ktime_t later, const ktime_t earlier)
+{
+ return ktime_to_us(ktime_sub(later, earlier));
+}
+
+static inline ktime_t ktime_add_us(const ktime_t kt, const u64 usec)
+{
+ return ktime_add_ns(kt, usec * 1000);
+}
+
+static inline ktime_t ktime_sub_us(const ktime_t kt, const u64 usec)
+{
+ return ktime_sub_ns(kt, usec * 1000);
+}
+