Received: by 2002:a05:6358:3188:b0:123:57c1:9b43 with SMTP id q8csp821850rwd; Thu, 15 Jun 2023 02:30:30 -0700 (PDT) X-Google-Smtp-Source: ACHHUZ4eWHhQ572c2G3Ondq/9iuO51MAftPw412NXPLin1qOKWQ1e3PkQVpja6mqlumLjcxHPqxz X-Received: by 2002:a05:6a00:1903:b0:65d:98a2:8876 with SMTP id y3-20020a056a00190300b0065d98a28876mr4820742pfi.2.1686821430050; Thu, 15 Jun 2023 02:30:30 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1686821430; cv=none; d=google.com; s=arc-20160816; b=NAW2KFIgAKdcdoWpMlaPJ80QFWc+fA6JbNCCVoN9B55BEEuAm3+d4eyaXhzBnZuPtG 8UJfmudBXoCQokbJnWCkcVZuyhEZK1VEMLkbucKkk+gUjbIJUALLIwCDfeXVohjWEUeo xy4fYXIRo2OOcDnp5MBx2Dh7wVO5cR82M1IVdaPSo6JaQl7uydkhAf/ws/d5qc3+6u7D CHphrja6JZCJ/29FUv1cERuMa1dFjaR37BuTt4eQLtQWrUmuwWL6fKTQpPTJSXgxyMJv XSBzH3Gi2lRZR1DO2n1j0Tfot1fvjWnytt7pLOEt4yk1RjIRAJp6qvsMYT4OkfzUFWN0 DBJA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:in-reply-to:content-disposition:mime-version :references:message-id:subject:cc:to:from:dkim-signature :dkim-signature:date; bh=bSxhHbyD3ao3w+CWcCPXZAJxdSKQ4HoWIOdzGWXnOQ8=; b=jpr1lcBEGBfNUgqcLYVIdCqC57I1VXJLriZTHxV9p6VzXouFxR26HwnaAZs6iQVPqd k4c8kWj/mECvu8W6OAJZpWAHHsYZYRLb90646C3pIdve6qtAKbfaZi0rhdbKtHjMNJ25 23AVyJ/b5TYmIIMDO6whSpDoWqkzLML7IEvOr88uNq2lVVNILBKcDGOBVMZ2H7TmKD1d dvJxJw0NJtjv/VCa0327TWsqp9Nua981enhnovKgxX4i4ff6KyvR2aZM5snbpwxK25Ah lVe4zDPwBgjo916kWKQ1zuZC+S1Koss8JpbSWZU1takSYA8H/d0PBhqj2/xMH+9geLZh Yuag== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@linutronix.de header.s=2020 header.b="v/6UfCoZ"; dkim=neutral (no key) header.i=@linutronix.de header.s=2020e header.b=0wPFoFoh; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=linutronix.de Return-Path: Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id w189-20020a6382c6000000b0054fcef3d89esi3722860pgd.12.2023.06.15.02.30.17; Thu, 15 Jun 2023 02:30:30 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@linutronix.de header.s=2020 header.b="v/6UfCoZ"; dkim=neutral (no key) header.i=@linutronix.de header.s=2020e header.b=0wPFoFoh; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=linutronix.de Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238998AbjFOJW4 (ORCPT + 99 others); Thu, 15 Jun 2023 05:22:56 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56274 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237138AbjFOJWz (ORCPT ); Thu, 15 Jun 2023 05:22:55 -0400 Received: from galois.linutronix.de (Galois.linutronix.de [IPv6:2a0a:51c0:0:12e:550::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C87941709; Thu, 15 Jun 2023 02:22:54 -0700 (PDT) Date: Thu, 15 Jun 2023 11:22:52 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1686820973; 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=bSxhHbyD3ao3w+CWcCPXZAJxdSKQ4HoWIOdzGWXnOQ8=; b=v/6UfCoZCZRG2kkCpcG15QPL7Vwlzi4aInwU47T6uBKUW6WiT8qCs2MeBG5JNL3OevY6ni fwAIQDTyIz+IaCDHD3ZiSwXh6kYK6UqOqe7HV3MkyHzLvT0wL8YZudPb4Mtp6YpvyPTkhf us7vZOMkt2jnd9hPA1xEyWb9cIFCP4AfxV5QRXDHA6CbCXF5rqhaCgZ1qYPqB6IQUOx93o ieamadhSb1/1NTtaNbCr7hrwrDukbW6kMpJHVlksd6OILHSqoYPATLlWbaDhj3G/9kBEQC iROKMu708yuTJEOQ4fa4AmG8m+LOc3MNyNH2xhHp5f17X/pnYo3Qca2swRZZ9Q== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1686820973; 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=bSxhHbyD3ao3w+CWcCPXZAJxdSKQ4HoWIOdzGWXnOQ8=; b=0wPFoFohlwE8u2JzTQrR7XBmP7tFuiGARW34hEdGeyrbKHHahAYq5vsnhViAhlhost5Vck DLvHopP03Hx7t3CA== From: Sebastian Andrzej Siewior To: Mathias Krause Cc: Thomas Gleixner , Peter Zijlstra , linux-kernel@vger.kernel.org, Ingo Molnar , Gusenleitner Klaus , Frederic Weisbecker , stable@vger.kernel.org Subject: Re: [PATCH] timekeeping: Align tick_sched_timer() with the HZ tick. -- regression report Message-ID: <20230615092252.8ajVwMXB@linutronix.de> References: <20230406095735.0_14edn3@linutronix.de> <20230406105529.GB392176@hirez.programming.kicks-ass.net> <87mt3lqnde.ffs@tglx> <20230406150254.ZrawA2Y-@linutronix.de> <87jzypq6gq.ffs@tglx> <20230418122639.ikgfvu3f@linutronix.de> <5a56290d-806e-b9a5-f37c-f21958b5a8c0@grsecurity.net> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <5a56290d-806e-b9a5-f37c-f21958b5a8c0@grsecurity.net> X-Spam-Status: No, score=-4.4 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_MED,SPF_HELO_NONE, SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2023-06-14 00:59:46 [+0200], Mathias Krause wrote: > Hi Sebastian, Hi Mathias, > this change doesn't seem to achieve that goal, unfortunately. Quite the > opposite. It makes the (boot) clock run faster and, because of the per- > boot different offset, differently fast for each boot. Up to the point > where it's running too fast to make any progress at all. I meant to reply to this thread but took the other by accident. Sorry. This should be addressed by https://lore.kernel.org/20230615091830.RxMV2xf_@linutronix.de Thank you for the report. > Thanks, > Mathias Sebastian