From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Message-ID: <4EFC9872.7000708@suse.cz> Date: Thu, 29 Dec 2011 17:42:26 +0100 From: Michal Marek MIME-Version: 1.0 To: Lucas De Marchi Cc: Sam Ravnborg , linux-modules@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 1/2] kbuild: add target to install gzipped modules References: <1325173819-26274-1-git-send-email-lucas.demarchi@profusion.mobi> In-Reply-To: <1325173819-26274-1-git-send-email-lucas.demarchi@profusion.mobi> Content-Type: text/plain; charset=ISO-8859-2 Sender: linux-kernel-owner@vger.kernel.org List-ID: Dne 29.12.2011 16:50, Lucas De Marchi napsal(a): > Add target in Makefile to compress the module after it's installed. > Module-init-tools and libkmod can handle gzipped modules. I am not convinced that this is a needed feature. Compressing elf files means that depmod and modinfo need to read the whole compressed file from disk and unpack it, while only a couple of bytes need to be read. Those concerned about disk space either compile only the few needed modules and/or use some compressed filesystem, which allows for random access. > This is not much useful for distributions because the package will gzip > the modules and call depmod in a install rule. However for those > compiling the kernel on their own and debugging module loading, it's > useful so depmod doesn't have to be called twice and we don't have to > manually compress the modules. I understand that you need *.ko.gz support in kmod for the sake of feature parity and that such patch would help you with debugging. But I doubt there is use for it apart of developing kmod. Wouldn't an external script like this do the same job for you? #!/bin/sh make "$@" modules_install rel="$(make -s "$@" kernelrelease)" find "/lib/modules/$rel" -name '*.ko' -exec gzip '{}' ';' depmod "$rel" Michal