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-rw-r--r--kernel/time/time.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/kernel/time/time.c b/kernel/time/time.c
index c3f756f8534b..9e3f79d4f5a8 100644
--- a/kernel/time/time.c
+++ b/kernel/time/time.c
@@ -783,6 +783,16 @@ u64 jiffies64_to_nsecs(u64 j)
}
EXPORT_SYMBOL(jiffies64_to_nsecs);
+u64 jiffies64_to_msecs(const u64 j)
+{
+#if HZ <= MSEC_PER_SEC && !(MSEC_PER_SEC % HZ)
+ return (MSEC_PER_SEC / HZ) * j;
+#else
+ return div_u64(j * HZ_TO_MSEC_NUM, HZ_TO_MSEC_DEN);
+#endif
+}
+EXPORT_SYMBOL(jiffies64_to_msecs);
+
/**
* nsecs_to_jiffies64 - Convert nsecs in u64 to jiffies64
*