diff options
| author | Alexander Gordeev <lasaine@lvk.cs.msu.su> | 2011-01-12 17:00:57 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-01-13 08:03:21 -0800 |
| commit | e2c18e49a0d4f822ffc29fb4958943beb1ff08b7 (patch) | |
| tree | 227dbb544277f7908fa1666ce21a15e6b2282ccb /Documentation/ioctl | |
| parent | 025b40abe715d638e60516a657d354e8560c1a85 (diff) | |
pps: capture MONOTONIC_RAW timestamps as well
MONOTONIC_RAW clock timestamps are ideally suited for frequency
calculation and also fit well into the original NTP hardpps design. Now
phase and frequency can be adjusted separately: the former based on
REALTIME clock and the latter based on MONOTONIC_RAW clock.
A new function getnstime_raw_and_real is added to timekeeping subsystem to
capture both timestamps at the same time and atomically.
Signed-off-by: Alexander Gordeev <lasaine@lvk.cs.msu.su>
Acked-by: John Stultz <johnstul@us.ibm.com>
Cc: Rodolfo Giometti <giometti@enneenne.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation/ioctl')
0 files changed, 0 insertions, 0 deletions