Thread (45 messages) 45 messages, 6 authors, 2009-02-04

Re: [PATCH NET-NEXT 11/12] time sync: generic infrastructure to map between time stamps generated by a time counter and system time

From: Ingo Molnar <hidden>
Date: 2009-01-21 10:33:52
Also in: lkml, netdev

* Patrick Ohly [off-list ref] wrote:
Currently only mapping from time counter to system time is implemented.
The interface could have been made more versatile by not depending on a time counter,
but this wasn't done to avoid writing glue code elsewhere.

The method implemented here is the one used and analyzed under the name
"assisted PTP" in the LCI PTP paper:
http://www.linuxclustersinstitute.org/conferences/archive/2008/PDF/Ohly_92221.pdf
---
 include/linux/clocksync.h |   85 +++++++++++++++++++
 kernel/time/Makefile      |    2 +-
 kernel/time/clocksync.c   |  196 +++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 282 insertions(+), 1 deletions(-)
 create mode 100644 include/linux/clocksync.h
 create mode 100644 kernel/time/clocksync.c
hm, these bits have less than casual impact - i think they need to go via 
the timer tree.

	Ingo
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