[PATCH v2 03/28] kernel: Add International Atomic Time support

Vincenzo Frascino
2018-11-29T17:12:35Z

Currently, datapage.h has no support for CLOCK_TAI.
CLOCK_TAI is similar to CLOCK_REALTIME, but uses the International
Atomic Time (TAI) reference instead of UTC to avoid jumping on leap
second updates.

This patch adds CLOCK_TAI (tai_sec) support to datapage.h.

Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
---
include/vdso/datapage.h | 1 +
1 file changed, 1 insertion(+)

diff --git a/include/vdso/datapage.h b/include/vdso/datapage.h
index 52189c21d422..d50a108afaed 100644
--- a/include/vdso/datapage.h
+++ b/include/vdso/datapage.h
@@ -33,6 +33,7 @@ struct vdso_data {
__u64 wtm_clock_sec; /* Wall to monotonic time */
__u64 wtm_clock_nsec;
__u64 btm_nsec; /* Monotonic to boot time */
+ __u64 tai_sec; /* International Atomic Time */
__u32 tb_seq_count; /* Timebase sequence counter */
__u32 cs_mono_mult; /* NTP-adjusted clocksource multiplier */
__u32 cs_shift; /* Clocksource shift (mono = raw) */