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

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Date:   Fri,  5 Nov 2021 11:38:14 +0900
From:   Masahiro Yamada <masahiroy@...nel.org>
To:     Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        linux-mips@...r.kernel.org
Cc:     Masahiro Yamada <masahiroy@...nel.org>,
        Alexander Lobakin <alobakin@...me>,
        Arnd Bergmann <arnd@...db.de>,
        Paul Cercueil <paul@...pouillou.net>,
        Xingxing Su <suxingxing@...ngson.cn>,
        linux-kernel@...r.kernel.org, zhaoxiao <zhaoxiao@...ontech.com>
Subject: [PATCH] mips: decompressor: do not copy source files while building

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.

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