Add more ktime related functions to the LinuxKPI.

Obtained from:	kmacy @
MFC after:	1 week
Sponsored by:	Mellanox Technologies

1 files changed, 32 insertions, 0 deletions

diff --git a/sys/compat/linuxkpi/common/include/linux/ktime.h b/sys/compat/linuxkpi/common/include/linux/ktime.h
index c9fa81c..7c6c40f 100644
--- a/sys/compat/linuxkpi/common/include/linux/ktime.h
+++ b/sys/compat/linuxkpi/common/include/linux/ktime.h
@@ -51,6 +51,24 @@ ktime_to_ns(ktime_t kt)
 	return kt.tv64;
 }
 
+static inline int64_t
+ktime_divns(const ktime_t kt, int64_t div)
+{
+	return kt.tv64 / div;
+}
+
+static inline int64_t
+ktime_to_us(ktime_t kt)
+{
+        return ktime_divns(kt, NSEC_PER_USEC);
+}
+
+static inline int64_t
+ktime_to_ms(ktime_t kt)
+{
+        return ktime_divns(kt, NSEC_PER_MSEC);
+}
+
 static inline struct timeval
 ktime_to_timeval(ktime_t kt)
 {
@@ -89,6 +107,20 @@ ktime_sub(ktime_t lhs, ktime_t rhs)
 	return (lhs);
 }
 
+static inline int64_t
+ktime_us_delta(ktime_t later, ktime_t earlier)
+{
+        ktime_t diff = ktime_sub(later, earlier);
+        return ktime_to_us(diff);
+}
+
+static inline int64_t
+ktime_ms_delta(ktime_t later, ktime_t earlier)
+{
+        ktime_t diff = ktime_sub(later, earlier);
+        return ktime_to_ms(diff);
+}
+
 static inline ktime_t
 ktime_add(ktime_t lhs, ktime_t rhs)
 {