Depending on the clocksource selected there can be supported a
different resolution hence we require a mask to be applied to the
time calculation.
This patch exposes the mask in the datapage for Raw and NTP adjusted
clock.
Cc: Arnd Bergmann <arnd@xxxxxxxx>
Signed-off-by: Vincenzo Frascino <vincenzo.frascino@xxxxxxx>
---
include/vdso/datapage.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/include/vdso/datapage.h b/include/vdso/datapage.h
index d50a108afaed..fb6ce4c3f2d0 100644
--- a/include/vdso/datapage.h
+++ b/include/vdso/datapage.h
@@ -36,8 +36,10 @@ struct vdso_data {
__u64 tai_sec; /* International Atomic Time */
__u32 tb_seq_count; /* Timebase sequence counter */
__u32 cs_mono_mult; /* NTP-adjusted clocksource multiplier */
+ __u64 cs_mono_mask; /* NTP-adjusted clocksource mask */
__u32 cs_shift; /* Clocksource shift (mono = raw) */
__u32 cs_raw_mult; /* Raw clocksource multiplier */
+ __u64 cs_raw_mask; /* Raw clocksource mask */
__u32 tz_minuteswest; /* Whacky timezone stuff */
__u32 tz_dsttime;
__u32 use_syscall;
--
2.19.1
