From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wr1-f42.google.com (mail-wr1-f42.google.com [209.85.221.42]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4685C3909A5 for ; Fri, 17 Jul 2026 09:10:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.221.42 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784279439; cv=none; b=qP01QdIZaASCJCgJqPcxCIISkUiieDFSo3euCG5pgH8m8ZpwR/IAxqwAbQz9IBYG6sJrFG1Y5/mAmkkXX2d73sXT7RGZH6xINoKymIJHVyZCUFEOVKBO9CoIVnsVyBz+m3TgPx1n69c6BUUGqP6ETbSMBIshBO2k/9J96dCzCc4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784279439; c=relaxed/simple; bh=xqT1ch9QXSr2Sh4KWiRd5vGUh3tKkxctBsod5h5U4Tw=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=kzTP42N0ZXgjCKwKsnQIIi34fWGUP5vv17OLHQuDkIgZb/g+YwxensoLym2BOsr2jowPxw9GGfyxkLhTke/HuOwxl+e8AgzcflhziU1miX3cVcQVDxlom4ajSavAjlUZmAKEQjKct5k8hzfLYlG6Ls0Uvy4pAq6eddv8Fh2gXMc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=suse.com; spf=pass smtp.mailfrom=suse.com; dkim=pass (2048-bit key) header.d=suse.com header.i=@suse.com header.b=C3Hgioml; arc=none smtp.client-ip=209.85.221.42 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=suse.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=suse.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=suse.com header.i=@suse.com header.b="C3Hgioml" Received: by mail-wr1-f42.google.com with SMTP id ffacd0b85a97d-47362928f65so6833930f8f.2 for ; Fri, 17 Jul 2026 02:10:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=google; t=1784279435; x=1784884235; darn=vger.kernel.org; h=in-reply-to:content-disposition:content-type:mime-version :references:message-id:subject:cc:to:from:date:from:to:cc:subject :date:message-id:reply-to:content-type; bh=GvqX1BcEi2ll08wPBPPLJIyQRF13ih/MJcl5l+I3Gbk=; b=C3HgiomlMLNaItNLhcns05qMldX6Si1IsACfu0wxvmnG239Zob5VZt6TlY+oG8GvLG SY5Z9uWWO/yubq15a5aWBGPcFdfMIs9wKvHsfmBIZgwtdxOCeF3pv2/pqkiaKs3Fja0W YDywE5iKhfvby0qQTml+H0MsciaWMBhnbnMYI3QAoP4tffdHgzeficzoB2ziJpG1Ka10 5EUmcIUzVOkVFm9zvn7s/kwOo2gY5yUdQLwn3O9Y9dKrm+Zjz9yT45Kk7YlsgMQFxs0O 5V+YsgQin7jx61ARO4Zt3yCYXYP35PX8FNIVQ0UcLN5Yk9mkjsMCR9qB+0YfWn5bBaZZ MRkA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1784279435; x=1784884235; h=in-reply-to:content-disposition:content-type:mime-version :references:message-id:subject:cc:to:from:date:x-gm-gg :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to :content-type; bh=GvqX1BcEi2ll08wPBPPLJIyQRF13ih/MJcl5l+I3Gbk=; b=sS4y32frSYLJKNfJpGbaS4xbnd3e7uOxCcwbTIHohBQl7rV2cGPTsMICaGvSiqrx2b T/wz8VPcgxZJlcXcbxly0k66NjcWBanda90fL4mWdZ2LlgbPIeZmmKq5cvVGj7DmxQZY 8vGfptLP9+fcgolx79bQYmCOMUjopsdVyyMrpEN6vdUGwRtoRdGY0rsRzGKOmrNeZv14 LuxLFpw2HvAe4mlWCIYCHSmRBGJGd0ggnkry7TbE96AfuRLC6Onz316wQ2k1BE48ando r+zW8ouJ9famHQRyffNqozmYAp6N3NBFfCckXkPmfv0EYbYQu5lufc36PjG1qOy+Yq/N hIUA== X-Forwarded-Encrypted: i=1; AHgh+RqJpqC12dUoGUn3IhxFYHgxCHVtMkgeDFgUarGFYoPtPyWlwEIoaMfK3uO9g4OF3C8bM8gBo4YlpEuBv2E=@vger.kernel.org X-Gm-Message-State: AOJu0YyfCeP94az/qxCLW25QYyz5otUShFmtrjtMyd8BkS9Gq751Egl+ p8msDNSf8eM3wHB/GHB33a4U2yXdu1dEnzGVwAlhsDvVnk8I8fYu4o3I27UmCSV932w= X-Gm-Gg: AfdE7ckwBJpL/Lsv81e4xVI+p0K1j8JNXBg/npJnohqTsAWhd3FDySWHFpwNJxUwG/b /m4PPX5PdRrNqtbSm7ei6EU3SAwJYd0NoSMaj56ooQNRAVOcTjUmMCuwJ5LgygenWhHzmL3VXZD yaVgqTYUK2v1NR0/jfXEza6RYXwDnllM8YPTqQ6KyyFumo+vgcptDAvGmS2CRyaA5Ak3nGHLzU7 XiLv1yWmhzHe+2yjKvGS/XCTW7SR/j/0Gmy5t7d+Zf1+tZBBDFnXISfCtwfYPFMbJnV0uqY+uX/ pyCDd3BD1JplAG9qUPU6sKsn+yT3x3IsqOhAWpDyeEzRPgFDafmuBmX3qUCWr3R7wkOif11aNdr YsopiJoTNq/q+dEW1oRpVHlJnT9eNooYohY2nrmspPak+IrKwFS/tCP3F28WZ4w2CG5hthO2lcZ Oqjjds X-Received: by 2002:a05:6000:41c2:b0:45e:f8d0:d22c with SMTP id ffacd0b85a97d-47f62316912mr2385289f8f.25.1784279435367; Fri, 17 Jul 2026 02:10:35 -0700 (PDT) Received: from pathway.suse.cz ([176.114.240.130]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-47f63e519f4sm2116892f8f.14.2026.07.17.02.10.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 17 Jul 2026 02:10:34 -0700 (PDT) Date: Fri, 17 Jul 2026 11:10:32 +0200 From: Petr Mladek To: Steven Rostedt Cc: Andrew Murray , John Ogness , Sergey Senozhatsky , Jonathan Corbet , Shuah Khan , Russell King , Florian Fainelli , Broadcom internal kernel review list , Ray Jui , Scott Branden , Andrew Morton , Greg Kroah-Hartman , Sebastian Andrzej Siewior , Clark Williams , linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rpi-kernel@lists.infradead.org, linux-rt-devel@lists.linux.dev Subject: Re: [PATCH v3 6/6] Documentation/kernel-parameters: add/update printk_delay/boot_delay Message-ID: References: <20260712-printkcleanup-v3-0-574547b8f71b@thegoodpenguin.co.uk> <20260712-printkcleanup-v3-6-574547b8f71b@thegoodpenguin.co.uk> <20260714175131.1edfc880@gandalf.local.home> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260714175131.1edfc880@gandalf.local.home> On Tue 2026-07-14 17:51:31, Steven Rostedt wrote: > On Sun, 12 Jul 2026 11:20:37 +0100 > Andrew Murray wrote: > > > diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt > > index 2884103b93bca7b76cd3a93946276074cf62d0a1..1118feda87b1b04543b1da0bd52c090b1fddaeac 100644 > > --- a/Documentation/admin-guide/kernel-parameters.txt > > +++ b/Documentation/admin-guide/kernel-parameters.txt > > @@ -650,11 +650,19 @@ Kernel parameters > > See Documentation/block/cmdline-partition.rst > > > > boot_delay= [KNL,EARLY] > > - Milliseconds to delay each printk during boot. > > - Only works if GENERIC_CALIBRATE_DELAY is enabled, > > - and you may also have to specify "lpj=". Boot_delay > > - values larger than 10 seconds (10000) are assumed > > - erroneous and ignored. > > + Milliseconds to delay each printk during and post boot. > > + Boot time delays only work if GENERIC_CALIBRATE_DELAY > > + is enabled. > > + > > + Once booted the delay can be removed or adjusted via > > + the printk_delay sysctl. > > + > > + Please note that you may also have to specify "lpj=". > > + Boot_delay values larger than 10 seconds (10000) are > > + assumed erroneous and ignored. > > + > > + This will soon be deprecated, please use printk_delay > > + instead. > > Format: integer > > > > bootconfig [KNL,EARLY] > > @@ -5468,6 +5476,19 @@ Kernel parameters > > printk.time= Show timing data prefixed to each printk message line > > Format: (1/Y/y=enable, 0/N/n=disable) > > > > + printk_delay= [KNL,EARLY] > > + Milliseconds to delay each printk during and post boot. > > + Boot time delays only work if GENERIC_CALIBRATE_DELAY > > + is enabled. > > + > > + Once booted the delay can be removed or adjusted via > > + the printk_delay sysctl. > > + > > + Please note that you may also have to specify "lpj=". > > + printk_delay values larger than 10 seconds (10000) are > > + assumed erroneous and ignored. > > + Format: integer > > + > > The two parameters descriptions are identical. They should show something > different. Is it just that the "boot_delay" name is getting deprecated? Good point. We could remove all the details from the boot_delay comment. Instead, we could say that it an obsolete alias to printk_delay, will soon be drecated, ... Best Regards, Petr