1 files changed, 37 insertions, 0 deletions

diff --git a/kernel/include/linux/time64.h b/kernel/include/linux/time64.h
index a3831478d..367d5af89 100644
--- a/kernel/include/linux/time64.h
+++ b/kernel/include/linux/time64.h
@@ -2,6 +2,7 @@
 #define _LINUX_TIME64_H
 
 #include <uapi/linux/time.h>
+#include <linux/math64.h>
 
 typedef __s64 time64_t;
 
@@ -11,11 +12,18 @@ typedef __s64 time64_t;
  */
 #if __BITS_PER_LONG == 64
 # define timespec64 timespec
+#define itimerspec64 itimerspec
 #else
 struct timespec64 {
 	time64_t	tv_sec;			/* seconds */
 	long		tv_nsec;		/* nanoseconds */
 };
+
+struct itimerspec64 {
+	struct timespec64 it_interval;
+	struct timespec64 it_value;
+};
+
 #endif
 
 /* Parameters used to convert the timespec values: */
@@ -28,6 +36,7 @@ struct timespec64 {
 #define FSEC_PER_SEC	1000000000000000LL
 
 /* Located here for timespec[64]_valid_strict */
+#define TIME64_MAX			((s64)~((u64)1 << 63))
 #define KTIME_MAX			((s64)~((u64)1 << 63))
 #define KTIME_SEC_MAX			(KTIME_MAX / NSEC_PER_SEC)
 
@@ -43,6 +52,16 @@ static inline struct timespec64 timespec_to_timespec64(const struct timespec ts)
 	return ts;
 }
 
+static inline struct itimerspec itimerspec64_to_itimerspec(struct itimerspec64 *its64)
+{
+	return *its64;
+}
+
+static inline struct itimerspec64 itimerspec_to_itimerspec64(struct itimerspec *its)
+{
+	return *its;
+}
+
 # define timespec64_equal		timespec_equal
 # define timespec64_compare		timespec_compare
 # define set_normalized_timespec64	set_normalized_timespec
@@ -75,6 +94,24 @@ static inline struct timespec64 timespec_to_timespec64(const struct timespec ts)
 	return ret;
 }
 
+static inline struct itimerspec itimerspec64_to_itimerspec(struct itimerspec64 *its64)
+{
+	struct itimerspec ret;
+
+	ret.it_interval = timespec64_to_timespec(its64->it_interval);
+	ret.it_value = timespec64_to_timespec(its64->it_value);
+	return ret;
+}
+
+static inline struct itimerspec64 itimerspec_to_itimerspec64(struct itimerspec *its)
+{
+	struct itimerspec64 ret;
+
+	ret.it_interval = timespec_to_timespec64(its->it_interval);
+	ret.it_value = timespec_to_timespec64(its->it_value);
+	return ret;
+}
+
 static inline int timespec64_equal(const struct timespec64 *a,
 				   const struct timespec64 *b)
 {