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-rw-r--r--include/linux/timekeeping.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/timekeeping.h b/include/linux/timekeeping.h
index 0ea7823b7f31..fc12a9ba2c88 100644
--- a/include/linux/timekeeping.h
+++ b/include/linux/timekeeping.h
@@ -310,12 +310,18 @@ struct system_device_crosststamp {
* timekeeping code to verify comparability of two cycle values.
* The default ID, CSID_GENERIC, does not identify a specific
* clocksource.
+ * @use_nsecs: @cycles is in nanoseconds.
*/
struct system_counterval_t {
u64 cycles;
enum clocksource_ids cs_id;
+ bool use_nsecs;
};
+extern bool ktime_real_to_base_clock(ktime_t treal,
+ enum clocksource_ids base_id, u64 *cycles);
+extern bool timekeeping_clocksource_has_base(enum clocksource_ids id);
+
/*
* Get cross timestamp between system clock and device clock
*/