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=-8.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=unavailable 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 DC8E7C433E6 for ; Fri, 15 Jan 2021 20:16:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B566523A75 for ; Fri, 15 Jan 2021 20:16:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388402AbhAOUQ0 (ORCPT ); Fri, 15 Jan 2021 15:16:26 -0500 Received: from m43-15.mailgun.net ([69.72.43.15]:37698 "EHLO m43-15.mailgun.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728049AbhAOUQZ (ORCPT ); Fri, 15 Jan 2021 15:16:25 -0500 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1610741767; h=Message-ID: References: In-Reply-To: Subject: Cc: To: From: Date: Content-Transfer-Encoding: Content-Type: MIME-Version: Sender; bh=mBXeczvmNbWOnHiothAx6TK2fNcMOH0snmzHQ8eDIS4=; b=HFl6g+88iQztgPTSWNt6dfVYif+l6q42E51hZFDjrWVWvi9ZsZuyvOr7H/rq15kxjfFDIDE+ FRuk1UdwmQWAuNja/DhcBjY2hSPVp4ttXgMN7voqz20b+wqGDd9MpkvKFylXJMJfq8yk3YlC puCvNEmqB9e2r7IM1ASLk2PvV1k= X-Mailgun-Sending-Ip: 69.72.43.15 X-Mailgun-Sid: WyI0MWYwYSIsICJsaW51eC1rZXJuZWxAdmdlci5rZXJuZWwub3JnIiwgImJlOWU0YSJd Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by smtp-out-n06.prod.us-west-2.postgun.com with SMTP id 6001f7df21210999ed0f3b6b (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Fri, 15 Jan 2021 20:15:27 GMT Sender: jjohnson=codeaurora.org@mg.codeaurora.org Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 29F1AC43461; Fri, 15 Jan 2021 20:15:27 +0000 (UTC) Received: from mail.codeaurora.org (localhost.localdomain [127.0.0.1]) (using TLSv1 with cipher ECDHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) (Authenticated sender: jjohnson) by smtp.codeaurora.org (Postfix) with ESMTPSA id 3950DC433ED; Fri, 15 Jan 2021 20:15:26 +0000 (UTC) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: 7bit Date: Fri, 15 Jan 2021 12:15:26 -0800 From: jjohnson@codeaurora.org To: Masahiro Yamada Cc: Linux Kbuild mailing list , Prasad Sodagudi , eberman@quicinc.com, Nick Desaulniers , Mahesh Kumar Kalikot Veetil , Michal Marek , Linux Kernel Mailing List Subject: Re: [PATCH v2 2/2] kbuild: handle excessively long argument lists In-Reply-To: References: <1610500731-30960-2-git-send-email-jjohnson@codeaurora.org> <1610660990-18812-1-git-send-email-jjohnson@codeaurora.org> Message-ID: <4c02050c4e95e4cb8cc04282695f8404@codeaurora.org> X-Sender: jjohnson@codeaurora.org User-Agent: Roundcube Webmail/1.3.9 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2021-01-14 17:12, Masahiro Yamada wrote: > On Fri, Jan 15, 2021 at 6:50 AM Jeff Johnson > wrote: >> >> From: Mahesh Kumar Kalikot Veetil >> >> Modules with a large number of compilation units may be >> exceeding AR and LD command argument list. Handle this gracefully by >> writing the long argument list in a file. The command line options >> read from file are inserted in place of the original @file option. >> >> The usage is well documented at >> https://www.gnu.org/software/make/manual/html_node/File-Function.html >> >> Signed-off-by: Mahesh Kumar Kalikot Veetil >> Signed-off-by: Jeff Johnson >> --- > > > > > First, is this a real problem? > If so, which module is exceeding the command line limit? On 2021-01-14 17:12, Masahiro Yamada wrote: > First, is this a real problem? > If so, which module is exceeding the command line limit? Mahesh & I appreciate all of the feedback. The issue is seen in an Android environment with an out-of-tree driver. The combination of long path names and a large number of source files is leading to the issue. Since Mahesh & I are not Kbuild gurus, is there an alternative solution to this issue? Jeff -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project