From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755237AbcIHLVR (ORCPT ); Thu, 8 Sep 2016 07:21:17 -0400 Received: from mail-wm0-f65.google.com ([74.125.82.65]:35675 "EHLO mail-wm0-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753861AbcIHLVP (ORCPT ); Thu, 8 Sep 2016 07:21:15 -0400 From: Nicolai Stange To: Chris Metcalf Cc: Nicolai Stange , Thomas Gleixner , John Stultz , Subject: Re: [RFC v4 10/22] arch/tile/kernel/time: set ->min_delta_ticks and ->max_delta_ticks References: <20160822233320.4548-1-nicstange@gmail.com> <20160822233320.4548-11-nicstange@gmail.com> <262d7903-f31e-bc93-fcb9-0530b9f4d414@mellanox.com> Date: Thu, 08 Sep 2016 13:21:12 +0200 In-Reply-To: <262d7903-f31e-bc93-fcb9-0530b9f4d414@mellanox.com> (Chris Metcalf's message of "Tue, 6 Sep 2016 15:19:31 -0400") Message-ID: <87bmzybpsn.fsf@gmail.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/25.1 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Chris Metcalf writes: > On 08/22/2016 07:33 PM, Nicolai Stange wrote: >> With the yet to come introduction of NTP correction awareness to the >> clockevent core, drivers should report their valid ranges in units of >> cycles to the latter. >> >> Currently, the tile's timer clockevent device is initialized as follows: >> >> evt->max_delta_ns = clockevent_delta2ns(MAX_TICK, evt); >> >> and >> >> .min_delta_ns = 1000, >> >> The first one translates to a ->max_delta_ticks value of MAX_TICK. >> For the latter, note that the clockevent core will superimpose a >> minimum of 1us by itself -- setting ->min_delta_ticks to 1 is safe here. >> >> Initialize ->min_delta_ticks and ->max_delta_ticks with these values. >> >> Signed-off-by: Nicolai Stange >> --- >> arch/tile/kernel/time.c | 2 ++ >> 1 file changed, 2 insertions(+) > > Thanks. Taken into the tile tree. I thank you for caring, but may I ask you to drop this again? The reasons are twofold: 1.) It isn't clear yet whether this series is worth it and will be accepted at all (hence the "RFC" tag). This patch by itself would not make any sense. 2.) The patches in this series depend heavily on each other. So I'd personally prefer if those more or less trivial changes to arch/ could be taken through the same tree as the rest, i.e. through the timers/core tree. I have no idea whether this is feasible and perhaps I'll have to get back to you. But for now, getting this patch removed from your tree would certainly simplify things a lot for me... Thanks and sorry for the inconvenience, Nicolai Stange