linux-kernel - [PATCH] powerpc: use always-y instead of extra-y in Makefiles

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Message-ID: <20250602163302.478765-1-masahiroy@kernel.org>
Date: Tue,  3 Jun 2025 01:32:24 +0900
From: Masahiro Yamada <masahiroy@...nel.org>
To: Madhavan Srinivasan <maddy@...ux.ibm.com>,
	Michael Ellerman <mpe@...erman.id.au>,
	Nicholas Piggin <npiggin@...il.com>,
	Christophe Leroy <christophe.leroy@...roup.eu>,
	Naveen N Rao <naveen@...nel.org>,
	linuxppc-dev@...ts.ozlabs.org
Cc: Masahiro Yamada <masahiroy@...nel.org>,
	linux-kernel@...r.kernel.org
Subject: [PATCH] powerpc: use always-y instead of extra-y in Makefiles

The extra-y syntax is planned for deprecation because it is similar
to always-y.

When building the boot wrapper, always-y and extra-y are equivalent.
Use always-y instead.

In arch/powerpc/kernel/Makefile, I added ifdef KBUILD_BUILTIN to
keep the current behavior: prom_init_check is skipped when building
only modular objects.

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

 arch/powerpc/boot/Makefile   | 6 +++---
 arch/powerpc/kernel/Makefile | 4 +++-
 2 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile
index 184d0680e661..b003f7ac8755 100644
--- a/arch/powerpc/boot/Makefile
+++ b/arch/powerpc/boot/Makefile
@@ -242,13 +242,13 @@ $(obj)/wrapper.a: $(obj-wlib) FORCE
 hostprogs	:= addnote hack-coff mktree
 
 targets		+= $(patsubst $(obj)/%,%,$(obj-boot) wrapper.a) zImage.lds
-extra-y		:= $(obj)/wrapper.a $(obj-plat) $(obj)/empty.o \
+always-y	:= $(obj)/wrapper.a $(obj-plat) $(obj)/empty.o \
 		   $(obj)/zImage.lds $(obj)/zImage.coff.lds $(obj)/zImage.ps3.lds
 
 dtstree		:= $(src)/dts
 
 wrapper		:= $(src)/wrapper
-wrapperbits	:= $(extra-y) $(addprefix $(obj)/,addnote hack-coff mktree) \
+wrapperbits	:= $(always-y) $(addprefix $(obj)/,addnote hack-coff mktree) \
 			$(wrapper) FORCE
 
 #############
@@ -455,7 +455,7 @@ WRAPPER_DTSDIR := /usr/lib/kernel-wrapper/dts
 WRAPPER_BINDIR := /usr/sbin
 INSTALL := install
 
-extra-installed		:= $(patsubst $(obj)/%, $(DESTDIR)$(WRAPPER_OBJDIR)/%, $(extra-y))
+extra-installed		:= $(patsubst $(obj)/%, $(DESTDIR)$(WRAPPER_OBJDIR)/%, $(always-y))
 hostprogs-installed	:= $(patsubst %, $(DESTDIR)$(WRAPPER_BINDIR)/%, $(hostprogs))
 wrapper-installed	:= $(DESTDIR)$(WRAPPER_BINDIR)/wrapper
 dts-installed		:= $(patsubst $(dtstree)/%, $(DESTDIR)$(WRAPPER_DTSDIR)/%, $(wildcard $(dtstree)/*.dts))
diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile
index 4d2daa8e7bca..ac01cedad107 100644
--- a/arch/powerpc/kernel/Makefile
+++ b/arch/powerpc/kernel/Makefile
@@ -201,7 +201,9 @@ obj-$(CONFIG_ALTIVEC)		+= vector.o
 
 obj-$(CONFIG_PPC_OF_BOOT_TRAMPOLINE) += prom_init.o
 obj64-$(CONFIG_PPC_OF_BOOT_TRAMPOLINE) += prom_entry_64.o
-extra-$(CONFIG_PPC_OF_BOOT_TRAMPOLINE) += prom_init_check
+ifdef KBUILD_BUILTIN
+always-$(CONFIG_PPC_OF_BOOT_TRAMPOLINE) += prom_init_check
+endif
 
 obj-$(CONFIG_PPC64)		+= $(obj64-y)
 obj-$(CONFIG_PPC32)		+= $(obj32-y)
-- 
2.43.0