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From: john stultz <johnstul@us.ibm.com>
To: Richard Cochran <richardcochran@gmail.com>
Cc: Torben Hohn <torbenh@gmx.de>,
	linux-kernel@vger.kernel.org, richard.cochran@omicron.at,
	tglx@linutronix.de
Subject: Re: [PATCH 2/3] ptp: add a software clock based on clock_monotonic_raw
Date: Sat, 05 Mar 2011 12:08:07 -0800	[thread overview]
Message-ID: <1299355687.28285.130.camel@work-vm> (raw)
In-Reply-To: <20110304064639.GD3824@riccoc20.at.omicron.at>

On Fri, 2011-03-04 at 07:46 +0100, Richard Cochran wrote:
> On Thu, Mar 03, 2011 at 11:34:04AM -0800, john stultz wrote:
> > On Thu, 2011-03-03 at 18:26 +0100, Torben Hohn wrote:
> > > First version of a software clock. Not very useful yet,
> > > as it doesnt generate events, but at least it allows
> > > for testing the ptp framework without special hardware.
> > 
> > So in the past, I pushed back on Richard for having something similar,
> > as I'm not psyched about duplicating interfaces. However, your
> > implementation is CLOCK_MONOTONIC_RAW instead of CLOCK_REALTIME and it
> > keeps the adjustments internal, I'm not as opposed.
> 
> (Aha! So it is okay after all ;)
> 
> I do think a software only PHC will make it easier for people to get
> started with the new interface. I have been carrying along such a
> patch privately for my own testing.

Consistency is but a hobgoblin... :)

But seriously, do forgive me if I misunderstood your earlier patches
with this respect. I thought it was just exporting CLOCK_REALTIME
directly through a new interface/clockid (which would be duplicative).

thanks
-john



  parent reply	other threads:[~2011-03-05 20:08 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-03-03 17:26 some patches for the ptp framework Torben Hohn
2011-03-03 17:26 ` [PATCH 1/3] remove __cpuinit from mwait_usable() Torben Hohn
2011-03-03 17:26 ` [PATCH 2/3] ptp: add a software clock based on clock_monotonic_raw Torben Hohn
2011-03-03 19:34   ` john stultz
2011-03-04  6:46     ` Richard Cochran
2011-03-04 11:06       ` torbenh
2011-03-05 20:08       ` john stultz [this message]
2011-03-06 13:28         ` Richard Cochran
2011-03-11 11:13           ` torbenh
2011-03-11 11:37             ` Christian Riesch
2011-03-11 13:38               ` torbenh
2011-03-11 11:56             ` Christian Riesch
2011-03-04  6:42   ` Richard Cochran
2011-03-04 11:30     ` torbenh
2011-03-04 16:10       ` Richard Cochran
2011-03-03 17:26 ` [PATCH 3/3] Check for write permission on FD based posix-clocks Torben Hohn
2011-03-04  7:22   ` Richard Cochran
2011-03-04  9:55     ` Arnd Bergmann
2011-03-04 10:13     ` torbenh
2011-03-11 19:46     ` Thomas Gleixner
2011-03-12 17:23       ` Richard Cochran
2011-03-12 17:35         ` Thomas Gleixner
2011-03-12 20:30   ` [tip:timers/core] posix-clocks: Check write permissions in posix syscalls tip-bot for Torben Hohn
2011-03-04  6:21 ` some patches for the ptp framework Richard Cochran
2011-03-10  7:02   ` Richard Cochran

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