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[23.128.96.18]) by mx.google.com with ESMTP id u6si1818450eds.504.2021.06.24.09.19.22; Thu, 24 Jun 2021 09:19:46 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@gmail.com header.s=20161025 header.b=jwsAfKyV; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230015AbhFXQSW (ORCPT + 99 others); Thu, 24 Jun 2021 12:18:22 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40640 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229525AbhFXQSV (ORCPT ); Thu, 24 Jun 2021 12:18:21 -0400 Received: from mail-pj1-x102c.google.com (mail-pj1-x102c.google.com [IPv6:2607:f8b0:4864:20::102c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E806FC061574; Thu, 24 Jun 2021 09:16:01 -0700 (PDT) Received: by mail-pj1-x102c.google.com with SMTP id s17-20020a17090a8811b029016e89654f93so6239959pjn.1; Thu, 24 Jun 2021 09:16:01 -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=ZiDQnFW1mi3okwHaS+e+SImAJ13yTfe8NvkJt2OVSpU=; b=jwsAfKyVrpVBMxgh2LcwXgPb2LsA+daQ0Pfiz2wGhvFO2HUYH2Awk/AKFmHmbxCQWr Gwooxo97rcqJRQnkz8/FnEGD3soF26WXeJd+0SNODs7i+vU1SEpTSVXQhCP1DVqFt9Gx 4f+wFR+Cw7KXqfiEFQI5Zeb3Q+NHhDFkgUnKhVWGV4KxE6YbOfhQSUnZ8MEHeTF7bW+n yk7tSFOdD/5x9ur1Cm6WxDLMHfilrsFbJUv1li2CH6JTH+T/KOMw8nunoVSMUhWrw2gL igKIKZ7sfyxDbj7A/r0h4XF2xPvch5HtjaYv9LfdfSh/Clkw10oWOJgWHvsXqIa8aw8Y K4BA== 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=ZiDQnFW1mi3okwHaS+e+SImAJ13yTfe8NvkJt2OVSpU=; b=IFHIfnkZ4x+D1xkJKuYypQMqxqkKUoiDAQPSFSBQq2orpAdPK3256HoNCb+R5fahnp onhq87dwSI8yHYQirHGagPRUnhTmywBkb4xtWTGjKgpKgov4iHuO26oARCKmYUfuoe7a nbmnkPA25JflRjRYqhMuJm2KoyxoTz+yicArvkXQ4Lqkuxu1bzXD5IHjIY1A4es2hDl/ n15BPlrXzMigIAo5mt+naD33wSeNuvoVxo7/Eyu/aNb9Jm0QmMse52hH4fu8sziq66Nz KeUfMpliYhkCtkl17gDeYG/e/1o2K2l7Q7+VyqMMphByjDH6qIG7ZQVWiR+maNa1pvUv VjCw== X-Gm-Message-State: AOAM5315NYrwwr8rFlvcsKryp7Cw1gkYYoPsOsPVOFuPegLc+0gLqPSM m8qYAx8JBK7trK1woAXmTaQzTaNrkQs= X-Received: by 2002:a17:90b:1bcb:: with SMTP id oa11mr6104216pjb.29.1624551361524; Thu, 24 Jun 2021 09:16:01 -0700 (PDT) Received: from hoboy.vegasvil.org ([2601:645:c000:35:e2d5:5eff:fea5:802f]) by smtp.gmail.com with ESMTPSA id z6sm2906628pgs.24.2021.06.24.09.16.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 24 Jun 2021 09:16:01 -0700 (PDT) Date: Thu, 24 Jun 2021 09:15:58 -0700 From: Richard Cochran To: Min Li Cc: "netdev@vger.kernel.org" , "linux-kernel@vger.kernel.org" Subject: Re: [PATCH net 2/2] ptp: idt82p33: implement double dco time correction Message-ID: <20210624161558.GD15473@hoboy.vegasvil.org> References: <1624459585-31233-1-git-send-email-min.li.xe@renesas.com> <1624459585-31233-2-git-send-email-min.li.xe@renesas.com> <20210624034343.GB6853@hoboy.vegasvil.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Jun 24, 2021 at 02:40:52PM +0000, Min Li wrote: > > What happens if user space makes a new adjustment before this completes? > > > > After all, some PTP profiles update the clock several times per second. > > > > Thanks, > > Richard > > Hi Richard > > In that case, adjtime would simply return without doing anything as in This is not what user space expects. Thanks, Richard