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-rw-r--r--include/linux/ktime.h7
-rw-r--r--include/linux/time64.h1
-rw-r--r--include/linux/timekeeping.h2
3 files changed, 9 insertions, 1 deletions
diff --git a/include/linux/ktime.h b/include/linux/ktime.h
index 2b6a204bd8d4..3ffc69ebe967 100644
--- a/include/linux/ktime.h
+++ b/include/linux/ktime.h
@@ -64,6 +64,13 @@ static inline ktime_t ktime_set(const s64 secs, const unsigned long nsecs)
({ (ktime_t){ .tv64 = (lhs).tv64 + (rhs).tv64 }; })
/*
+ * Same as ktime_add(), but avoids undefined behaviour on overflow; however,
+ * this means that you must check the result for overflow yourself.
+ */
+#define ktime_add_unsafe(lhs, rhs) \
+ ({ (ktime_t){ .tv64 = (u64) (lhs).tv64 + (rhs).tv64 }; })
+
+/*
* Add a ktime_t variable and a scalar nanosecond value.
* res = kt + nsval:
*/
diff --git a/include/linux/time64.h b/include/linux/time64.h
index 7e5d2fa9ac46..980c71b3001a 100644
--- a/include/linux/time64.h
+++ b/include/linux/time64.h
@@ -5,6 +5,7 @@
#include <linux/math64.h>
typedef __s64 time64_t;
+typedef __u64 timeu64_t;
/*
* This wants to go into uapi/linux/time.h once we agreed about the
diff --git a/include/linux/timekeeping.h b/include/linux/timekeeping.h
index 816b7543f81b..09168c52ab64 100644
--- a/include/linux/timekeeping.h
+++ b/include/linux/timekeeping.h
@@ -1,7 +1,7 @@
#ifndef _LINUX_TIMEKEEPING_H
#define _LINUX_TIMEKEEPING_H
-#include <asm-generic/errno-base.h>
+#include <linux/errno.h>
/* Included from linux/ktime.h */