Re: [PATCH v2 01/10] kbuild: factor out genksyms command from cmd_gensymtypes_{c,S}

From: Nicolas Schier <nicolas@fjasle.eu>
To: Masahiro Yamada <masahiroy@kernel.org>
Cc: linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org,
	Michal Marek <michal.lkml@markovi.net>,
	Nick Desaulniers <ndesaulniers@google.com>
Subject: Re: [PATCH v2 01/10] kbuild: factor out genksyms command from cmd_gensymtypes_{c,S}
Date: Tue, 5 Apr 2022 22:00:39 +0200	[thread overview]
Message-ID: <Ykyf51yQ78g71veR@fjasle.eu> (raw)
In-Reply-To: <20220405113359.2880241-2-masahiroy@kernel.org>

On Tue, Apr 05, 2022 at 08:33:49PM +0900 Masahiro Yamada wrote:
> The genksyms command part in cmd_gensymtypes_{c,S} is duplicated.
> Factor it out into the 'genksyms' macro.
> 
> For the readability, I slightly refactor the arguments to genksyms.
> 
> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
> ---

Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>

> 
> Changes in v2:
>   - Fix the location of the closing parenthesis
> 
>  scripts/Makefile.build | 19 ++++++++-----------
>  1 file changed, 8 insertions(+), 11 deletions(-)
> 
> diff --git a/scripts/Makefile.build b/scripts/Makefile.build
> index 9717e6f6fb31..31e0e33dfe5d 100644
> --- a/scripts/Makefile.build
> +++ b/scripts/Makefile.build
> @@ -125,13 +125,14 @@ cmd_cpp_i_c       = $(CPP) $(c_flags) -o $@ $<
>  $(obj)/%.i: $(src)/%.c FORCE
>  	$(call if_changed_dep,cpp_i_c)
>  
> +genksyms = scripts/genksyms/genksyms		\
> +	$(if $(1), -T $(2))			\
> +	$(if $(CONFIG_MODULE_REL_CRCS), -R)	\
> +	$(if $(KBUILD_PRESERVE), -p)		\
> +	-r $(or $(wildcard $(2:.symtypes=.symref)), /dev/null)
> +
>  # These mirror gensymtypes_S and co below, keep them in synch.
> -cmd_gensymtypes_c =                                                         \
> -    $(CPP) -D__GENKSYMS__ $(c_flags) $< |                                   \
> -    scripts/genksyms/genksyms $(if $(1), -T $(2))                           \
> -     $(patsubst y,-R,$(CONFIG_MODULE_REL_CRCS))                             \
> -     $(if $(KBUILD_PRESERVE),-p)                                            \
> -     -r $(firstword $(wildcard $(2:.symtypes=.symref) /dev/null))
> +cmd_gensymtypes_c = $(CPP) -D__GENKSYMS__ $(c_flags) $< | $(genksyms)
>  
>  quiet_cmd_cc_symtypes_c = SYM $(quiet_modtag) $@
>  cmd_cc_symtypes_c =                                                         \
> @@ -344,11 +345,7 @@ cmd_gensymtypes_S =                                                         \
>      $(CPP) $(a_flags) $< |                                                  \
>       grep "\<___EXPORT_SYMBOL\>" |                                          \
>       sed 's/.*___EXPORT_SYMBOL[[:space:]]*\([a-zA-Z0-9_]*\)[[:space:]]*,.*/EXPORT_SYMBOL(\1);/' ; } | \
> -    $(CPP) -D__GENKSYMS__ $(c_flags) -xc - |                                \
> -    scripts/genksyms/genksyms $(if $(1), -T $(2))                           \
> -     $(patsubst y,-R,$(CONFIG_MODULE_REL_CRCS))                             \
> -     $(if $(KBUILD_PRESERVE),-p)                                            \
> -     -r $(firstword $(wildcard $(2:.symtypes=.symref) /dev/null))
> +    $(CPP) -D__GENKSYMS__ $(c_flags) -xc - | $(genksyms)
>  
>  quiet_cmd_cc_symtypes_S = SYM $(quiet_modtag) $@
>  cmd_cc_symtypes_S =                                                         \
> -- 
> 2.32.0
> 
> 

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