From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751070AbeCIDN1 (ORCPT ); Thu, 8 Mar 2018 22:13:27 -0500 Received: from mail.cn.fujitsu.com ([183.91.158.132]:54896 "EHLO heian.cn.fujitsu.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1750848AbeCIDN0 (ORCPT ); Thu, 8 Mar 2018 22:13:26 -0500 X-IronPort-AV: E=Sophos;i="5.43,368,1503331200"; d="scan'208";a="37653267" Subject: Re: [PATCH 4/5] kbuild: simplify modname calculation To: Masahiro Yamada , CC: Sam Ravnborg , Michal Marek , Govind Singh , Kalle Valo , References: <1520471103-10089-1-git-send-email-yamada.masahiro@socionext.com> <1520471103-10089-5-git-send-email-yamada.masahiro@socionext.com> From: Cao jin Message-ID: <4c97d2e7-4029-e19e-4fc2-44d0cea927a5@cn.fujitsu.com> Date: Fri, 9 Mar 2018 11:12:38 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.4.0 MIME-Version: 1.0 In-Reply-To: <1520471103-10089-5-git-send-email-yamada.masahiro@socionext.com> Content-Type: text/plain; charset="utf-8" Content-Language: en-US Content-Transfer-Encoding: 7bit X-Originating-IP: [10.167.226.60] X-yoursite-MailScanner-ID: 7EAA748AE761.A8A1C X-yoursite-MailScanner: Found to be clean X-yoursite-MailScanner-From: caoj.fnst@cn.fujitsu.com Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 03/08/2018 09:05 AM, Masahiro Yamada wrote: > modname can be calculated much more simply. If modname-multi is > empty, it is a single-used object. So, modname = $(basetarget).> Otherwise, modname = $(modname-multi). > > Signed-off-by: Masahiro Yamada > --- > > scripts/Makefile.build | 12 +----------- > scripts/Makefile.lib | 7 ------- > 2 files changed, 1 insertion(+), 18 deletions(-) > > diff --git a/scripts/Makefile.build b/scripts/Makefile.build > index 4f2b25d..b8aecb7 100644 > --- a/scripts/Makefile.build > +++ b/scripts/Makefile.build > @@ -131,17 +131,7 @@ $(real-objs-m:.o=.lst): quiet_modtag := [M] > > $(obj-m) : quiet_modtag := [M] > > -# Default for not multi-part modules > -modname = $(basetarget) > - > -$(multi-objs-m) : modname = $(modname-multi) > -$(multi-objs-m:.o=.i) : modname = $(modname-multi) > -$(multi-objs-m:.o=.s) : modname = $(modname-multi) > -$(multi-objs-m:.o=.lst) : modname = $(modname-multi) > -$(multi-objs-y) : modname = $(modname-multi) > -$(multi-objs-y:.o=.i) : modname = $(modname-multi) > -$(multi-objs-y:.o=.s) : modname = $(modname-multi) > -$(multi-objs-y:.o=.lst) : modname = $(modname-multi) > +modname = $(if $(modname-multi),$(modname-multi),$(basetarget)) > > quiet_cmd_cc_s_c = CC $(quiet_modtag) $@ > cmd_cc_s_c = $(CC) $(c_flags) $(DISABLE_LTO) -fverbose-asm -S -o $@ $< > diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib > index 9217d40..e4e8e1b 100644 > --- a/scripts/Makefile.lib > +++ b/scripts/Makefile.lib > @@ -47,11 +47,6 @@ multi-used-m := $(sort $(foreach m,$(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m > multi-used := $(multi-used-y) $(multi-used-m) > single-used-m := $(sort $(filter-out $(multi-used-m),$(obj-m))) > > -# Build list of the parts of our composite objects, our composite > -# objects depend on those (obviously) > -multi-objs-y := $(foreach m, $(multi-used-y), $($(m:.o=-objs)) $($(m:.o=-y))) > -multi-objs-m := $(foreach m, $(multi-used-m), $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m))) > - > # $(subdir-obj-y) is the list of objects in $(obj-y) which uses dir/ to > # tell kbuild to descend > subdir-obj-y := $(filter %/built-in.o, $(obj-y)) > @@ -80,8 +75,6 @@ real-objs-m := $(addprefix $(obj)/,$(real-objs-m)) > single-used-m := $(addprefix $(obj)/,$(single-used-m)) > multi-used-y := $(addprefix $(obj)/,$(multi-used-y)) > multi-used-m := $(addprefix $(obj)/,$(multi-used-m)) > -multi-objs-y := $(addprefix $(obj)/,$(multi-objs-y)) > -multi-objs-m := $(addprefix $(obj)/,$(multi-objs-m)) > subdir-ym := $(addprefix $(obj)/,$(subdir-ym)) > > # These flags are needed for modversions and compiling, so we define them here > multi-objs-y/m seems only exist for rules above with target-specific variable assignment. A great simplification, So Reviewed-by: Cao jin -- Sincerely, Cao jin