From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christoph Lameter Subject: Re: [PATCH 0/2] [RFC] posix clock tuning Date: Sat, 4 Sep 2010 12:23:55 -0500 (CDT) Message-ID: References: Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Return-path: In-Reply-To: Sender: netdev-owner@vger.kernel.org To: Richard Cochran Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-api@vger.kernel.org List-Id: linux-api@vger.kernel.org On Fri, 3 Sep 2010, Richard Cochran wrote: > Recently on the lkml, we discussed how to allow adjustment of posix > clocks. I have tried to understand and implement the ideas expressed > in the various threads. > > If there is agreement on this approach, I will resubmit these two > patches as part of a longer series, including support for a new kind > of hardware clock, so you can see how it all fits together. But first, > I would like to concentrate on the new syscall itself. > > The patches are against a recent net-next tree. Please don't worry if > the syscall tables are not quite up to date. I can fix that later. Could you explain why the existing interfaces are not sufficient that do what you describe? man adjtime man adjtimex man clock_settime ? Why would you need this to support a new hardware clock? You want the clock to run at a different speed from system time?