netdev - RE: [PATCH v3] Add support for driver cross-timestamp to PTP_SYS

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Date:	Tue, 14 Jul 2015 01:51:14 +0000
From:	"Hall, Christopher S" <christopher.s.hall@...el.com>
To:	Richard Cochran <richardcochran@...il.com>
CC:	"tglx@...utronix.de" <tglx@...utronix.de>,
	"john.stultz@...aro.org" <john.stultz@...aro.org>,
	"Ronciak, John" <john.ronciak@...el.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: RE: [PATCH v3] Add support for driver cross-timestamp to
 PTP_SYS_OFFSET ioctl

I am assuming the patch is rejected at this point.  I will re-submit later as soon as I am able to post a full end to end solution.

Chris

> -----Original Message-----
> From: Richard Cochran [mailto:richardcochran@...il.com]
> Sent: Thursday, July 09, 2015 7:58 AM
> To: Hall, Christopher S
> Cc: tglx@...utronix.de; john.stultz@...aro.org; Ronciak, John; linux-
> kernel@...r.kernel.org; netdev@...r.kernel.org
> Subject: Re: [PATCH v3] Add support for driver cross-timestamp to
> PTP_SYS_OFFSET ioctl
> 
> On Wed, Jul 08, 2015 at 01:46:41PM -0700, Christopher Hall wrote:
> > This patch allows system and device time ("cross-timestamp") to be
> > performed by the driver. Currently, the cross-timestamping is performed
> > in the PTP_SYS_OFFSET ioctl.  The PTP clock driver reads gettimeofday()
> > and the gettime64() callback provided by the driver. The cross-timestamp
> > is best effort where the latency between the capture of system time
> > (getnstimeofday()) and the device time (driver callback) may be
> > significant.
> 
> The interface looks okay to me.  Now all we need is a user of it...
> 
> Acked-by: Richard Cochran <richardcochran@...il.com>
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