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=-4.2 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 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 6C609C433E0 for ; Mon, 29 Mar 2021 14:19:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 312C061981 for ; Mon, 29 Mar 2021 14:19:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230271AbhC2OSn (ORCPT ); Mon, 29 Mar 2021 10:18:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43044 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229910AbhC2OSN (ORCPT ); Mon, 29 Mar 2021 10:18:13 -0400 Received: from mail-pg1-x52d.google.com (mail-pg1-x52d.google.com [IPv6:2607:f8b0:4864:20::52d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1E197C061574 for ; Mon, 29 Mar 2021 07:18:13 -0700 (PDT) Received: by mail-pg1-x52d.google.com with SMTP id k8so341510pgf.4 for ; Mon, 29 Mar 2021 07:18:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=D4ufLomD7FzzswLsbSlB2m6zdVHd1EjhBRWYbflvHJU=; b=fA0GZQPdCoAQ+NZLQjuduXSvG/v3opWwXuX4wZ64u4W+Ornd5zaqSzNt5MfEjJEAiE qBADzcmlpK7Fy/puXL7LwkXnYDugVbtOFVr5klXK5H+/ZCrIdjcAmHoKSzgODZKuOVbe Nswg1fJ5dOf4XM37Q3BFAQzOLMFrQuxbPz/7Gy7dz3sSDWBF+rrIkdclKifWjn9jh7vP uB8dHgo3RCnpe02dJPZjGrVda6wNE0yM+KfT1zN9NLMmsM/BFVldJiWamz+/JvlHv47l p+zFTIrwZX0UbCgBj4D21OajnZ/DavHks/eu1MI7ZseJJLiMfFy7H1sluFZJ+7cyOwZE 4WjA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=D4ufLomD7FzzswLsbSlB2m6zdVHd1EjhBRWYbflvHJU=; b=ePrBbxkHuMneyi5z8xXu65zK4fboffWS0YAgdw9VNSLfXPIK4mPWuo9afNqL7ZEBRx wmT5d8MWigLGiKdVGsZHlCGBmqMOxgc0geWmpRqS+5VPZCfmZjFJ9LiPwvcAaO1BJ6cO marDRhxPqc+qVej4Lagl42upSbx5o7i2D/8htJYstVuHYCfnVHmOADBuHSoJi9p87fky dGx97fV5eDeuJ7H66DSX98QXaR+Lch0NhAkWD5/4B+0fBxhwSDxg0rwb3Z2vG7kQxKpY VvOvAwmROWdVlH/cSFxU6cM27fQMpMQXjY18008MksVib+L0FZEC8IcTBP1j+qnjWPL4 rrag== X-Gm-Message-State: AOAM533TCHTzGv7TF/epPQV01p2xRc865rM3oNJTSXRmeGEo0y6p0KjF xqtp5xkCnn+2iinF9OmGEaI= X-Google-Smtp-Source: ABdhPJyFTXcpNeDvsQhLA7PnQS1wRDEG/DZtGmR3dLxNReHR18QCu30WeycftWbZg7jmD77wd0FHwA== X-Received: by 2002:aa7:8498:0:b029:1f6:8a25:7ade with SMTP id u24-20020aa784980000b02901f68a257ademr25406975pfn.76.1617027492647; Mon, 29 Mar 2021 07:18:12 -0700 (PDT) Received: from hoboy.vegasvil.org ([2601:645:c000:3c:e2d5:5eff:fea5:802f]) by smtp.gmail.com with ESMTPSA id l25sm17598543pgu.72.2021.03.29.07.18.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 29 Mar 2021 07:18:12 -0700 (PDT) Date: Mon, 29 Mar 2021 07:18:09 -0700 From: Richard Cochran To: Daphne Preston-Kendal Cc: Miroslav Lichvar , Thomas Gleixner , LKML , John Stultz , "Michael Kerrisk (man-pages)" Subject: Re: [Bug 212265] New: clock_gettime(CLOCK_TAI, ...) should return an error when TAI has not been configured Message-ID: <20210329141809.GA20909@hoboy.vegasvil.org> References: <2505F20D-ED84-4B36-9504-8A8C756C992E@nonceword.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <2505F20D-ED84-4B36-9504-8A8C756C992E@nonceword.org> User-Agent: Mutt/1.10.1 (2018-07-13) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Mar 29, 2021 at 11:56:31AM +0200, Daphne Preston-Kendal wrote: > > The other is that the kernel updates the offset when a leap > > second is inserted/deleted even if the original offset is zero, so > > checking for zero (in the kernel or an application) works only until > > the first leap second after boot. > > This is a problem and definitely speaks for having a way to tell whether CLOCK_TAI has been set up at all. +1 Thanks, Richard