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-rw-r--r--include/linux/timex.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/timex.h b/include/linux/timex.h
index 04a4a8cb4ed..b7ca1204e42 100644
--- a/include/linux/timex.h
+++ b/include/linux/timex.h
@@ -345,6 +345,9 @@ time_interpolator_reset(void)
#endif /* !CONFIG_TIME_INTERPOLATION */
+/* Returns how long ticks are at present, in ns / 2^(SHIFT_SCALE-10). */
+extern u64 current_tick_length(void);
+
#endif /* KERNEL */
#endif /* LINUX_TIMEX_H */