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-rw-r--r--include/linux/ktime.h7
1 files changed, 7 insertions, 0 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:
*/