From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4919516132A; Mon, 1 Sep 2025 18:15:53 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.137.202.133 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756750554; cv=none; b=YxNi7dpDOIYQSc2OwK4bpF9yXAJ3jpLFgGWU3imUUpu5owqNrjtJuk4cyxDaJTdHVIIfU2dog/aJlhAN+Sf588Cw6bEzU2/+7jI2Prer0DnF2tIQZnLVvfyzIEcf4PsZzDgSXHVQYjFlG2FkTuf5SisZyQfR823TZoh2jV7lEVs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756750554; c=relaxed/simple; bh=7CzD+pxO5Ta5pvGZTs3pd1Ibie9wy6Tm6tKdIsV7FOw=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=OxEljI9z0ZO4QvVwiy60j1pqS29f8jJlP14dnH98VAMSVgx8Hg4K5f9UZUWvwXOgwWSz3XxxZN6YCOtNtzwiC/7Rurh4qv46oClB/z9xwczNGIeYD7L8Rdt5eRexhE4sjZVpCAn1lz6UDr7GpAp2sNkoF9Cctv1ebu0Cddc8lRk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org; spf=none smtp.mailfrom=infradead.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b=2UVIe9lK; arc=none smtp.client-ip=198.137.202.133 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=infradead.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="2UVIe9lK" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=Content-Transfer-Encoding: Content-Type:In-Reply-To:From:References:Cc:To:Subject:MIME-Version:Date: Message-ID:Sender:Reply-To:Content-ID:Content-Description; bh=6PLbKrTqDlV/rgrKakybTJQzxxfzQkbpPoJMusdTYLg=; b=2UVIe9lKuGKQpmU5ztP3jxZtXd YHoYCg4K5nNnobPLWjcner93CNWho7ooOxw25JZLVZP/sp+DZ7YdLynQiBgafBRxYMGx6xQoZ57as zzb96Z0TPDDyjIZbRQH4LWm4s0HhOUv//BwIhzFizFHRgbhnzJGuM+AGcxKyxZ+uKrQwSUiqgYHSu ifVquIiCVVWAujQgH0aK/cX3oyA0BNEM29ANW33WF97EX0FcZc9VWLIBleRKUH21hl9vGz0nsLxMr L+NknHBBLbOul8MghVvAiZW9ecDYmvOtLLjX7F+2j8Tk4jtvJzUEthhNU7c085bIKNnkgcHHBky9d tcw4nR6w==; Received: from [50.53.25.54] (helo=[192.168.254.17]) by bombadil.infradead.org with esmtpsa (Exim 4.98.2 #2 (Red Hat Linux)) id 1ut94I-0000000DXsN-3Mlz; Mon, 01 Sep 2025 18:15:50 +0000 Message-ID: <6c2f40ed-7dbc-4ae8-8231-f414ad15acef@infradead.org> Date: Mon, 1 Sep 2025 11:15:50 -0700 Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [TECH TOPIC] Kernel documentation - update and future directions To: Mark Brown Cc: Jani Nikula , Mauro Carvalho Chehab , Jonathan Corbet , Laurent Pinchart , Vegard Nossum , ksummit@lists.linux.dev, Linux Documentation , Mauro Carvalho Chehab , Akira Yokosawa , Bagas Sanjaya , Matthew Wilcox References: <87plcndkzs.fsf@trenco.lwn.net> <20250828230104.GB26612@pendragon.ideasonboard.com> <87wm6l0w2y.fsf@trenco.lwn.net> <930d1b37-a588-43db-9867-4e1a58072601@oracle.com> <20250830222351.GA1705@pendragon.ideasonboard.com> <87h5xo1k6y.fsf@trenco.lwn.net> <20250831160339.2c45506c@foz.lan> <2f927f53-9af5-4e0c-be8f-f7bdf90e23ff@sirena.org.uk> Content-Language: en-US From: Randy Dunlap In-Reply-To: <2f927f53-9af5-4e0c-be8f-f7bdf90e23ff@sirena.org.uk> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Hi, On 9/1/25 10:52 AM, Mark Brown wrote: > On Mon, Sep 01, 2025 at 09:51:01AM -0700, Randy Dunlap wrote: > >> Willy had a suggestion that we just make checking kernel-doc during >> all .c builds a permanent feature instead of a W=1 option. >> This helps, but still doesn't force 'make htmldocs' to be run. > > make htmldocs is rather slow: > > $ time make -j56 htmldocs > ... > make -j56 htmldocs 2355.99s user 141.33s system 158% cpu 26:14.86 total Wow. I just ran 'make -j8 htmldocs' on my 16 GB intel core-i7 laptop: 1205.85user 66.15system 6:05.82elapsed 347%CPU (0avgtext+0avgdata 1298044maxresident)k 697432inputs+1128016outputs (92major+16863601minor)pagefaults 0swaps (using /usr/bin/time) How much RAM does your build system have? > > and produces a bunch of warnings with current mainline it seems. That > compares unfavourably with allmodconfig on this system: > > $ time make -j56 allmodconfig > ... > make -j56 allmodconfig 5.31s user 1.93s system 146% cpu 4.931 total > $ time make -j56 > ... > make -j56 53468.11s user 4387.30s system 5084% cpu 18:57.77 total whereas my x86_64 allmodconfig build takes over 1 hour. :( > and seems rather more likely to flag something for me. OK, good to hear. Thanks. -- ~Randy