Thread (3 messages) 3 messages, 1 author, 2021-05-26
STALE1829d

[PATCH 1/5] kbuild: require all architectures to have arch/$(SRCARCH)/Kbuild

From: Masahiro Yamada <masahiroy@kernel.org>
Date: 2021-05-12 08:04:36
Also in: linux-alpha, linux-kbuild, linux-mips, linux-riscv, linux-s390, linux-um, linuxppc-dev, lkml, sparclinux
Subsystem: alpha port, arm port, arm64 port (aarch64 architecture), c-sky architecture, kernel build + files below scripts/ (unless maintained elsewhere), linux for powerpc (32-bit and 64-bit), microblaze architecture, mips, nios2 architecture, openrisc architecture, parisc architecture, qualcomm hexagon architecture, risc-v architecture, s390 architecture, sparc + ultrasparc (sparc/sparc64), superh, synopsys arc architecture, tensilica xtensa port (xtensa), the rest, user-mode linux (uml), x86 architecture (32-bit and 64-bit) · Maintainers: Richard Henderson, Matt Turner, Magnus Lindholm, Russell King, Catalin Marinas, Will Deacon, Guo Ren, Nathan Chancellor, Nicolas Schier, Madhavan Srinivasan, Michael Ellerman, Michal Simek, Thomas Bogendoerfer, Dinh Nguyen, Simon Schuster, Jonas Bonn, Stefan Kristiansson, Stafford Horne, "James E.J. Bottomley", Helge Deller, Brian Cain, Paul Walmsley, Palmer Dabbelt, Albert Ou, Heiko Carstens, Vasily Gorbik, Alexander Gordeev, "David S. Miller", Andreas Larsson, Yoshinori Sato, Rich Felker, John Paul Adrian Glaubitz, Vineet Gupta, Chris Zankel, Max Filippov, Linus Torvalds, Richard Weinberger, Anton Ivanov, Johannes Berg, Thomas Gleixner, Ingo Molnar, Borislav Petkov, Dave Hansen

arch/$(SRCARCH)/Kbuild is useful for Makefile cleanups because you can
use the obj-y syntax.

Add an empty file if it is missing in arch/$(SRCARCH)/.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
---

 Makefile               | 2 +-
 arch/alpha/Kbuild      | 1 +
 arch/arc/Makefile      | 3 ---
 arch/arm/Makefile      | 1 -
 arch/arm64/Makefile    | 1 -
 arch/csky/Kbuild       | 1 +
 arch/h8300/Kbuild      | 1 +
 arch/hexagon/Kbuild    | 1 +
 arch/ia64/Kbuild       | 1 +
 arch/microblaze/Kbuild | 1 +
 arch/mips/Makefile     | 3 ---
 arch/nds32/Kbuild      | 1 +
 arch/nios2/Kbuild      | 1 +
 arch/openrisc/Makefile | 1 -
 arch/parisc/Kbuild     | 1 +
 arch/powerpc/Makefile  | 3 ---
 arch/riscv/Makefile    | 1 -
 arch/s390/Makefile     | 3 ---
 arch/sh/Kbuild         | 1 +
 arch/sparc/Makefile    | 3 ---
 arch/um/Kbuild         | 1 +
 arch/x86/Makefile      | 3 ---
 arch/xtensa/Kbuild     | 1 +
 23 files changed, 13 insertions(+), 23 deletions(-)
 create mode 100644 arch/alpha/Kbuild
 create mode 100644 arch/csky/Kbuild
 create mode 100644 arch/h8300/Kbuild
 create mode 100644 arch/hexagon/Kbuild
 create mode 100644 arch/ia64/Kbuild
 create mode 100644 arch/microblaze/Kbuild
 create mode 100644 arch/nds32/Kbuild
 create mode 100644 arch/nios2/Kbuild
 create mode 100644 arch/parisc/Kbuild
 create mode 100644 arch/sh/Kbuild
 create mode 100644 arch/um/Kbuild
 create mode 100644 arch/xtensa/Kbuild
diff --git a/Makefile b/Makefile
index 15b6476d0f89..7df040b1b023 100644
--- a/Makefile
+++ b/Makefile
@@ -658,7 +658,7 @@ endif
 
 ifeq ($(KBUILD_EXTMOD),)
 # Objects we will link into vmlinux / subdirs we need to visit
-core-y		:= init/ usr/
+core-y		:= init/ usr/ arch/$(SRCARCH)/
 drivers-y	:= drivers/ sound/
 drivers-$(CONFIG_SAMPLES) += samples/
 drivers-$(CONFIG_NET) += net/
diff --git a/arch/alpha/Kbuild b/arch/alpha/Kbuild
new file mode 100644
index 000000000000..a4e40e534e6a
--- /dev/null
+++ b/arch/alpha/Kbuild
@@ -0,0 +1 @@
+# SPDX-License-Identifier: GPL-2.0-only
diff --git a/arch/arc/Makefile b/arch/arc/Makefile
index 4392c9c189c4..3e6d4b84797f 100644
--- a/arch/arc/Makefile
+++ b/arch/arc/Makefile
@@ -85,9 +85,6 @@ KBUILD_LDFLAGS	+= $(ldflags-y)
 
 head-y		:= arch/arc/kernel/head.o
 
-# See arch/arc/Kbuild for content of core part of the kernel
-core-y		+= arch/arc/
-
 # w/o this dtb won't embed into kernel binary
 core-y		+= arch/arc/boot/dts/
 
diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index 415c3514573a..173da685a52e 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -252,7 +252,6 @@ endif
 
 export	TEXT_OFFSET GZFLAGS MMUEXT
 
-core-y				+= arch/arm/
 # If we have a machine-specific directory, then include it in the build.
 core-y				+= $(machdirs) $(platdirs)
 
diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile
index 7ef44478560d..b73c151f3a53 100644
--- a/arch/arm64/Makefile
+++ b/arch/arm64/Makefile
@@ -149,7 +149,6 @@ KBUILD_CFLAGS += -DKASAN_SHADOW_SCALE_SHIFT=$(KASAN_SHADOW_SCALE_SHIFT)
 KBUILD_CPPFLAGS += -DKASAN_SHADOW_SCALE_SHIFT=$(KASAN_SHADOW_SCALE_SHIFT)
 KBUILD_AFLAGS += -DKASAN_SHADOW_SCALE_SHIFT=$(KASAN_SHADOW_SCALE_SHIFT)
 
-core-y		+= arch/arm64/
 libs-y		:= arch/arm64/lib/ $(libs-y)
 libs-$(CONFIG_EFI_STUB) += $(objtree)/drivers/firmware/efi/libstub/lib.a
 
diff --git a/arch/csky/Kbuild b/arch/csky/Kbuild
new file mode 100644
index 000000000000..a4e40e534e6a
--- /dev/null
+++ b/arch/csky/Kbuild
@@ -0,0 +1 @@
+# SPDX-License-Identifier: GPL-2.0-only
diff --git a/arch/h8300/Kbuild b/arch/h8300/Kbuild
new file mode 100644
index 000000000000..a4e40e534e6a
--- /dev/null
+++ b/arch/h8300/Kbuild
@@ -0,0 +1 @@
+# SPDX-License-Identifier: GPL-2.0-only
diff --git a/arch/hexagon/Kbuild b/arch/hexagon/Kbuild
new file mode 100644
index 000000000000..a4e40e534e6a
--- /dev/null
+++ b/arch/hexagon/Kbuild
@@ -0,0 +1 @@
+# SPDX-License-Identifier: GPL-2.0-only
diff --git a/arch/ia64/Kbuild b/arch/ia64/Kbuild
new file mode 100644
index 000000000000..a4e40e534e6a
--- /dev/null
+++ b/arch/ia64/Kbuild
@@ -0,0 +1 @@
+# SPDX-License-Identifier: GPL-2.0-only
diff --git a/arch/microblaze/Kbuild b/arch/microblaze/Kbuild
new file mode 100644
index 000000000000..a4e40e534e6a
--- /dev/null
+++ b/arch/microblaze/Kbuild
@@ -0,0 +1 @@
+# SPDX-License-Identifier: GPL-2.0-only
diff --git a/arch/mips/Makefile b/arch/mips/Makefile
index 258234c35a09..4e942b7ef022 100644
--- a/arch/mips/Makefile
+++ b/arch/mips/Makefile
@@ -332,9 +332,6 @@ head-y := arch/mips/kernel/head.o
 libs-y			+= arch/mips/lib/
 libs-$(CONFIG_MIPS_FP_SUPPORT) += arch/mips/math-emu/
 
-# See arch/mips/Kbuild for content of core part of the kernel
-core-y += arch/mips/
-
 drivers-y			+= arch/mips/crypto/
 
 # suspend and hibernation support
diff --git a/arch/nds32/Kbuild b/arch/nds32/Kbuild
new file mode 100644
index 000000000000..a4e40e534e6a
--- /dev/null
+++ b/arch/nds32/Kbuild
@@ -0,0 +1 @@
+# SPDX-License-Identifier: GPL-2.0-only
diff --git a/arch/nios2/Kbuild b/arch/nios2/Kbuild
new file mode 100644
index 000000000000..a4e40e534e6a
--- /dev/null
+++ b/arch/nios2/Kbuild
@@ -0,0 +1 @@
+# SPDX-License-Identifier: GPL-2.0-only
diff --git a/arch/openrisc/Makefile b/arch/openrisc/Makefile
index 410e7abfac69..c52de526e518 100644
--- a/arch/openrisc/Makefile
+++ b/arch/openrisc/Makefile
@@ -42,7 +42,6 @@ endif
 
 head-y 		:= arch/openrisc/kernel/head.o
 
-core-y		+= arch/openrisc/
 libs-y		+= $(LIBGCC)
 
 PHONY += vmlinux.bin
diff --git a/arch/parisc/Kbuild b/arch/parisc/Kbuild
new file mode 100644
index 000000000000..a4e40e534e6a
--- /dev/null
+++ b/arch/parisc/Kbuild
@@ -0,0 +1 @@
+# SPDX-License-Identifier: GPL-2.0-only
diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile
index 3212d076ac6a..af669aa75b73 100644
--- a/arch/powerpc/Makefile
+++ b/arch/powerpc/Makefile
@@ -267,9 +267,6 @@ head-$(CONFIG_PPC_FPU)		+= arch/powerpc/kernel/fpu.o
 head-$(CONFIG_ALTIVEC)		+= arch/powerpc/kernel/vector.o
 head-$(CONFIG_PPC_OF_BOOT_TRAMPOLINE)  += arch/powerpc/kernel/prom_init.o
 
-# See arch/powerpc/Kbuild for content of core part of the kernel
-core-y += arch/powerpc/
-
 # Default to zImage, override when needed
 all: zImage
 
diff --git a/arch/riscv/Makefile b/arch/riscv/Makefile
index 3eb9590a0775..c5f359540862 100644
--- a/arch/riscv/Makefile
+++ b/arch/riscv/Makefile
@@ -90,7 +90,6 @@ endif
 
 head-y := arch/riscv/kernel/head.o
 
-core-y += arch/riscv/
 core-$(CONFIG_RISCV_ERRATA_ALTERNATIVE) += arch/riscv/errata/
 
 libs-y += arch/riscv/lib/
diff --git a/arch/s390/Makefile b/arch/s390/Makefile
index e443ed9947bd..37b61645694c 100644
--- a/arch/s390/Makefile
+++ b/arch/s390/Makefile
@@ -128,9 +128,6 @@ OBJCOPYFLAGS	:= -O binary
 
 head-y		:= arch/s390/kernel/head64.o
 
-# See arch/s390/Kbuild for content of core part of the kernel
-core-y		+= arch/s390/
-
 libs-y		+= arch/s390/lib/
 drivers-y	+= drivers/s390/
 
diff --git a/arch/sh/Kbuild b/arch/sh/Kbuild
new file mode 100644
index 000000000000..a4e40e534e6a
--- /dev/null
+++ b/arch/sh/Kbuild
@@ -0,0 +1 @@
+# SPDX-License-Identifier: GPL-2.0-only
diff --git a/arch/sparc/Makefile b/arch/sparc/Makefile
index bee99e65fe23..4e65245bc755 100644
--- a/arch/sparc/Makefile
+++ b/arch/sparc/Makefile
@@ -58,9 +58,6 @@ endif
 
 head-y                 := arch/sparc/kernel/head_$(BITS).o
 
-# See arch/sparc/Kbuild for the core part of the kernel
-core-y                 += arch/sparc/
-
 libs-y                 += arch/sparc/prom/
 libs-y                 += arch/sparc/lib/
 
diff --git a/arch/um/Kbuild b/arch/um/Kbuild
new file mode 100644
index 000000000000..a4e40e534e6a
--- /dev/null
+++ b/arch/um/Kbuild
@@ -0,0 +1 @@
+# SPDX-License-Identifier: GPL-2.0-only
diff --git a/arch/x86/Makefile b/arch/x86/Makefile
index c77c5d8a7b3e..4307bf48ec53 100644
--- a/arch/x86/Makefile
+++ b/arch/x86/Makefile
@@ -239,9 +239,6 @@ head-y += arch/x86/kernel/platform-quirks.o
 
 libs-y  += arch/x86/lib/
 
-# See arch/x86/Kbuild for content of core part of the kernel
-core-y += arch/x86/
-
 # drivers-y are linked after core-y
 drivers-$(CONFIG_MATH_EMULATION) += arch/x86/math-emu/
 drivers-$(CONFIG_PCI)            += arch/x86/pci/
diff --git a/arch/xtensa/Kbuild b/arch/xtensa/Kbuild
new file mode 100644
index 000000000000..a4e40e534e6a
--- /dev/null
+++ b/arch/xtensa/Kbuild
@@ -0,0 +1 @@
+# SPDX-License-Identifier: GPL-2.0-only
-- 
2.27.0
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