linux-kernel - Re: [PATCH] mips: decompressor: do not copy source files while building

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Date:   Tue, 09 Nov 2021 12:10:10 +0000
From:   Paul Cercueil <paul@...pouillou.net>
To:     Masahiro Yamada <masahiroy@...nel.org>
Cc:     Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        linux-mips@...r.kernel.org, Alexander Lobakin <alobakin@...me>,
        Arnd Bergmann <arnd@...db.de>,
        Xingxing Su <suxingxing@...ngson.cn>,
        linux-kernel@...r.kernel.org, zhaoxiao <zhaoxiao@...ontech.com>
Subject: Re: [PATCH] mips: decompressor: do not copy source files while
 building

Hi Masahiro,

Le ven., nov. 5 2021 at 11:38:14 +0900, Masahiro Yamada 
<masahiroy@...nel.org> a écrit :
> As commit 7ae4a78daacf ("ARM: 8969/1: decompressor: simplify libfdt
> builds") stated, copying source files during the build time may not
> end up with as clean code as expected.
> 
> Do similar for mips to clean up the Makefile and .gitignore.

What did you base this patch on?

It does not apply cleanly here. It tries to create ashldi3.c and 
bswapsi.c, which already exist.

Cheers,
-Paul

> 
> Signed-off-by: Masahiro Yamada <masahiroy@...nel.org>
> ---
> 
>  arch/mips/boot/compressed/.gitignore   |  3 ---
>  arch/mips/boot/compressed/Makefile     | 12 ------------
>  arch/mips/boot/compressed/ashldi3.c    |  2 ++
>  arch/mips/boot/compressed/bswapsi.c    |  2 ++
>  arch/mips/boot/compressed/uart-ath79.c |  2 ++
>  scripts/remove-stale-files             |  5 +++++
>  6 files changed, 11 insertions(+), 15 deletions(-)
>  delete mode 100644 arch/mips/boot/compressed/.gitignore
>  create mode 100644 arch/mips/boot/compressed/ashldi3.c
>  create mode 100644 arch/mips/boot/compressed/bswapsi.c
>  create mode 100644 arch/mips/boot/compressed/uart-ath79.c
> 
> diff --git a/arch/mips/boot/compressed/.gitignore 
> b/arch/mips/boot/compressed/.gitignore
> deleted file mode 100644
> index d358395614c9..000000000000
> --- a/arch/mips/boot/compressed/.gitignore
> +++ /dev/null
> @@ -1,3 +0,0 @@
> -# SPDX-License-Identifier: GPL-2.0-only
> -ashldi3.c
> -bswapsi.c
> diff --git a/arch/mips/boot/compressed/Makefile 
> b/arch/mips/boot/compressed/Makefile
> index 3548b3b45269..e6584dab2360 100644
> --- a/arch/mips/boot/compressed/Makefile
> +++ b/arch/mips/boot/compressed/Makefile
> @@ -50,20 +50,8 @@ vmlinuzobjs-$(CONFIG_MIPS_ALCHEMY)		   += 
> $(obj)/uart-alchemy.o
>  vmlinuzobjs-$(CONFIG_ATH79)			   += $(obj)/uart-ath79.o
>  endif
> 
> -extra-y += uart-ath79.c
> -$(obj)/uart-ath79.c: $(srctree)/arch/mips/ath79/early_printk.c
> -	$(call cmd,shipped)
> -
>  vmlinuzobjs-$(CONFIG_KERNEL_XZ) += $(obj)/ashldi3.o
> 
> -extra-y += ashldi3.c
> -$(obj)/ashldi3.c: $(obj)/%.c: $(srctree)/lib/%.c FORCE
> -	$(call if_changed,shipped)
> -
> -extra-y += bswapsi.c
> -$(obj)/bswapsi.c: $(obj)/%.c: $(srctree)/arch/mips/lib/%.c FORCE
> -	$(call if_changed,shipped)
> -
>  targets := $(notdir $(vmlinuzobjs-y))
> 
>  targets += vmlinux.bin
> diff --git a/arch/mips/boot/compressed/ashldi3.c 
> b/arch/mips/boot/compressed/ashldi3.c
> new file mode 100644
> index 000000000000..f7bf6a7aae31
> --- /dev/null
> +++ b/arch/mips/boot/compressed/ashldi3.c
> @@ -0,0 +1,2 @@
> +// SPDX-License-Identifier: GPL-2.0-only
> +#include "../../../../lib/ashldi3.c"
> diff --git a/arch/mips/boot/compressed/bswapsi.c 
> b/arch/mips/boot/compressed/bswapsi.c
> new file mode 100644
> index 000000000000..fdb9c6476904
> --- /dev/null
> +++ b/arch/mips/boot/compressed/bswapsi.c
> @@ -0,0 +1,2 @@
> +// SPDX-License-Identifier: GPL-2.0-only
> +#include "../../lib/bswapsi.c"
> diff --git a/arch/mips/boot/compressed/uart-ath79.c 
> b/arch/mips/boot/compressed/uart-ath79.c
> new file mode 100644
> index 000000000000..d686820921be
> --- /dev/null
> +++ b/arch/mips/boot/compressed/uart-ath79.c
> @@ -0,0 +1,2 @@
> +// SPDX-License-Identifier: GPL-2.0-only
> +#include "../../ath79/early_printk.c"
> diff --git a/scripts/remove-stale-files b/scripts/remove-stale-files
> index eb630ee287c3..c534fe1eac16 100755
> --- a/scripts/remove-stale-files
> +++ b/scripts/remove-stale-files
> @@ -28,4 +28,9 @@ if [ -n "${building_out_of_srctree}" ]; then
>  	do
>  		rm -f arch/arm/boot/compressed/${f}
>  	done
> +
> +	for f in uart-ath79.c ashldi3.c bswapsi.c
> +	do
> +		rm -f arch/mips/boot/compressed/${f}
> +	done
>  fi
> --
> 2.30.2
>