From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D27E1C433E1 for ; Fri, 3 Jul 2020 09:13:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B135020836 for ; Fri, 3 Jul 2020 09:13:22 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="31Ki3lq/"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="xnCHBv4R" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726396AbgGCJNV (ORCPT ); Fri, 3 Jul 2020 05:13:21 -0400 Received: from Galois.linutronix.de ([193.142.43.55]:58162 "EHLO galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725648AbgGCJNU (ORCPT ); Fri, 3 Jul 2020 05:13:20 -0400 From: Thomas Gleixner DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1593767599; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=7qT2Qloe0viLOSply2DEdZk8V558qJCt/ksLt+nNRlQ=; b=31Ki3lq/5cx2ZwGqJt/f0CC1cono3zE9U5KoOc31WGqOofL736M1DV51qhO9ecwf6OdEC/ X37oLbgqKp72/YgSdB2zLLO3KwFaHWDgWvSRMQvRdIQCzr+BHumaNmQw1HQ33ktF/ERXnY u/fLiYpc+3+/g8uVMkpWsf6QrNq2axQfRpZrUJGkOGIVaaUNmWWnPAnpAXjX0Kf07tGF1N UQsTEZ7MqI83z7vJJ4Gm4tfnKR0XlCYx8XStkn/rVyVKQTFQCu2QuI9IaurFwkLJrI3bNh LiTutmjK6AFH/ZhA7ITedg8mzDDrPhUpYkDG+4j8r+qoydhDPr8ebeqrBHACmQ== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1593767599; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=7qT2Qloe0viLOSply2DEdZk8V558qJCt/ksLt+nNRlQ=; b=xnCHBv4R2r+2YVTpSXsBo9v+tua2HoX4oVs0A3FriW8mA1qgnHdieZu7W7C2+oPUU67L8i G3/2rhLgnGWcW9CA== To: Frederic Weisbecker Cc: LKML , Anna-Maria Gleixner , Peter Zijlstra , Juri Lelli Subject: Re: [RFC PATCH 10/10] timer: Lower base clock forwarding threshold In-Reply-To: <20200703001219.GD27417@lenoir> References: <20200702133219.GA27417@lenoir> <87zh8irltc.fsf@nanos.tec.linutronix.de> <20200703001219.GD27417@lenoir> Date: Fri, 03 Jul 2020 11:13:18 +0200 Message-ID: <87pn9drmfl.fsf@nanos.tec.linutronix.de> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Frederic Weisbecker writes: > On Thu, Jul 02, 2020 at 05:14:23PM +0200, Thomas Gleixner wrote: >> >> The reason for this < 2 is historical and goes back to the oddities of >> the original timer wheel before the big rewrite. > > Ok. And is it still needed today or can we now forward even with a 1 delta? I haven't found anything which requires it. But be aware of dragons ....