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Date: Fri, 5 Jan 2024 21:03:07 -0800
From: Richard Cochran <richardcochran@gmail.com>
To: Mahesh Bandewar =?utf-8?B?KOCkruCkueClh+CktiDgpKzgpILgpKHgpYfgpLXgpL4=?=
	=?utf-8?B?4KSwKQ==?= <maheshb@google.com>
Cc: Netdev <netdev@vger.kernel.org>, Linux <linux-kernel@vger.kernel.org>,
	David Miller <davem@davemloft.net>,
	Jakub Kicinski <kuba@kernel.org>,
	Eric Dumazet <edumazet@google.com>, Paolo Abeni <pabeni@redhat.com>,
	Jonathan Corbet <corbet@lwn.net>, John Stultz <jstultz@google.com>,
	Don Hatchett <hatch@google.com>, Yuliang Li <yuliangli@google.com>,
	Mahesh Bandewar <mahesh@bandewar.net>,
	Willem de Bruijn <willemb@google.com>
Subject: Re: [PATCHv3 net-next 2/3] ptp: add ioctl interface for
 ptp_gettimex64any()
Message-ID: <ZZjfC9LvQFrtwu_x@hoboy.vegasvil.org>
References: <20240104212439.3276458-1-maheshb@google.com>
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 <CAF2d9jga9oc4OST6PMU=C9rz_NDrURCcLGx-1tP31U00z63vbA@mail.gmail.com>
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In-Reply-To: <ZZjdUlaYyHZSiwSM@hoboy.vegasvil.org>

On Fri, Jan 05, 2024 at 08:55:46PM -0800, Richard Cochran wrote:
> On Fri, Jan 05, 2024 at 09:51:40AM -0800, Mahesh Bandewar (महेश बंडेवार) wrote:
> 
> > POSIX clocks are employed in this series for syscall width
> > measurement, potentially leading to misunderstandings about
> > overlapping functionality. However, their roles are distinct and serve
> > different purposes.
> 
> I don't see any difference in purposes.  The multi_clock_gettime call
> is a more general solution.  Thus it will obviate the need for any new
> PTP ioctls.

And to be clear, I object to the third patch, the new ioctl.

ptp_clock_info.gettimex64any() can and should be presented as an
optimized back end for the multi_clock_gettime system call.

Thanks,
Richard