Re: [PATCH 0/2] [RFC] posix clock tuning
From: Christoph Lameter
Date: Sat Sep 04 2010 - 21:47:51 EST
On Sat, 4 Sep 2010, Christian Riesch wrote:
> Richard's idea is to support clock hardware for IEEE 1588 (PTP, Precision Time
> Protocol). Have a look at the earlier discussions:
>
> http://lkml.org/lkml/2010/8/16/90
A superficial scan does not give me any definite agreement on an approach.
The patchset also needs to be CCed to John Stultz. Without a summary I
still am not clear what this is supposed to address.
Tuning of the PTP clock can be done with driver specific configuration
rather than a new POSIX clock. That is at least how SGI_CYCLE is operating
which is similar.
> http://lkml.org/lkml/2010/8/23/49
Ok this goes more into something that may prove useful but it would be
very helpful still to have a clear discussion as to why this is all
needed. From what I can tell the functionality is already there and
another clock device (CLOCK_SGI_CYCLE) is already providing a model for
how a PTP clock could be controlled and used.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/