2 files changed, 7 insertions, 1 deletions

diff --git a/include/linux/jiffies.h b/include/linux/jiffies.h
index d235e88cfd7c..1f44466c1e9d 100644
--- a/include/linux/jiffies.h
+++ b/include/linux/jiffies.h
@@ -294,6 +294,12 @@ extern unsigned long preset_lpj;
  */
 extern unsigned int jiffies_to_msecs(const unsigned long j);
 extern unsigned int jiffies_to_usecs(const unsigned long j);
+
+static inline u64 jiffies_to_nsecs(const unsigned long j)
+{
+        return (u64)jiffies_to_usecs(j) * NSEC_PER_USEC;
+}
+
 extern unsigned long msecs_to_jiffies(const unsigned int m);
 extern unsigned long usecs_to_jiffies(const unsigned int u);
 extern unsigned long timespec_to_jiffies(const struct timespec *value);
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index a88f4a485c5e..61e601fc2b1e 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -2325,7 +2325,7 @@ u64 scheduler_tick_max_deferment(void)
         if (time_before_eq(next, now))
                 return 0;
 
-        return jiffies_to_usecs(next - now) * NSEC_PER_USEC;
+        return jiffies_to_nsecs(next - now);
 }
 #endif