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OpenCloudOS-Kernel
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kbuild: rebuild modules when module linker scripts are updated 

Currently, the timestamp of module linker scripts are not checked.
Add them to the dependency of modules so they are correctly rebuilt.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
This commit is contained in:
Masahiro Yamada 2019-08-15 01:06:22 +09:00
parent 888f0c346f
commit 10df063855
10 changed files with 17 additions and 10 deletions
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5
Documentation/kbuild/makefiles.rst
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@ -993,6 +993,11 @@ When kbuild executes, the following steps are followed (roughly):
The linker script with full path. Assigned by the top-level Makefile. The linker script with full path. Assigned by the top-level Makefile.
KBUILD_LDS_MODULE
The module linker script with full path. Assigned by the top-level
Makefile and additionally by the arch Makefile.
KBUILD_VMLINUX_OBJS KBUILD_VMLINUX_OBJS
All object files for vmlinux. They are linked to vmlinux in the same All object files for vmlinux. They are linked to vmlinux in the same

3
Makefile
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@ -482,7 +482,8 @@ KBUILD_AFLAGS_KERNEL :=
KBUILD_CFLAGS_KERNEL := KBUILD_CFLAGS_KERNEL :=
KBUILD_AFLAGS_MODULE := -DMODULE KBUILD_AFLAGS_MODULE := -DMODULE
KBUILD_CFLAGS_MODULE := -DMODULE KBUILD_CFLAGS_MODULE := -DMODULE
KBUILD_LDFLAGS_MODULE := -T $(srctree)/scripts/module-common.lds KBUILD_LDFLAGS_MODULE :=
export KBUILD_LDS_MODULE := $(srctree)/scripts/module-common.lds
KBUILD_LDFLAGS := KBUILD_LDFLAGS :=
GCC_PLUGINS_CFLAGS := GCC_PLUGINS_CFLAGS :=
CLANG_FLAGS := CLANG_FLAGS :=

2
arch/arm/Makefile
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@ -17,7 +17,7 @@ KBUILD_LDFLAGS_MODULE += --be8
endif endif
ifeq ($(CONFIG_ARM_MODULE_PLTS),y) ifeq ($(CONFIG_ARM_MODULE_PLTS),y)
KBUILD_LDFLAGS_MODULE += -T $(srctree)/arch/arm/kernel/module.lds KBUILD_LDS_MODULE += $(srctree)/arch/arm/kernel/module.lds
endif endif
GZFLAGS :=-9 GZFLAGS :=-9

2
arch/arm64/Makefile
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@ -101,7 +101,7 @@ endif
CHECKFLAGS += -D__aarch64__ CHECKFLAGS += -D__aarch64__
ifeq ($(CONFIG_ARM64_MODULE_PLTS),y) ifeq ($(CONFIG_ARM64_MODULE_PLTS),y)
KBUILD_LDFLAGS_MODULE += -T $(srctree)/arch/arm64/kernel/module.lds KBUILD_LDS_MODULE += $(srctree)/arch/arm64/kernel/module.lds
endif endif
# Default value # Default value

2
arch/ia64/Makefile
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@ -20,7 +20,7 @@ CHECKFLAGS += -D__ia64=1 -D__ia64__=1 -D_LP64 -D__LP64__
OBJCOPYFLAGS := --strip-all OBJCOPYFLAGS := --strip-all
LDFLAGS_vmlinux := -static LDFLAGS_vmlinux := -static
KBUILD_LDFLAGS_MODULE += -T $(srctree)/arch/ia64/module.lds KBUILD_LDS_MODULE += $(srctree)/arch/ia64/module.lds
KBUILD_AFLAGS_KERNEL := -mconstant-gp KBUILD_AFLAGS_KERNEL := -mconstant-gp
EXTRA := EXTRA :=

2
arch/m68k/Makefile
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@ -73,7 +73,7 @@ KBUILD_AFLAGS += -D__uClinux__
endif endif
KBUILD_LDFLAGS := -m m68kelf KBUILD_LDFLAGS := -m m68kelf
KBUILD_LDFLAGS_MODULE += -T $(srctree)/arch/m68k/kernel/module.lds KBUILD_LDS_MODULE += $(srctree)/arch/m68k/kernel/module.lds
ifdef CONFIG_SUN3 ifdef CONFIG_SUN3
LDFLAGS_vmlinux = -N LDFLAGS_vmlinux = -N

2
arch/parisc/Makefile
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@ -60,7 +60,7 @@ KBUILD_CFLAGS += -DCC_USING_PATCHABLE_FUNCTION_ENTRY=1 \
-DFTRACE_PATCHABLE_FUNCTION_SIZE=$(NOP_COUNT) -DFTRACE_PATCHABLE_FUNCTION_SIZE=$(NOP_COUNT)
CC_FLAGS_FTRACE := -fpatchable-function-entry=$(NOP_COUNT),$(shell echo $$(($(NOP_COUNT)-1))) CC_FLAGS_FTRACE := -fpatchable-function-entry=$(NOP_COUNT),$(shell echo $$(($(NOP_COUNT)-1)))
KBUILD_LDFLAGS_MODULE += -T $(srctree)/arch/parisc/kernel/module.lds KBUILD_LDS_MODULE += $(srctree)/arch/parisc/kernel/module.lds
endif endif
OBJCOPY_FLAGS =-O binary -R .note -R .comment -S OBJCOPY_FLAGS =-O binary -R .note -R .comment -S

2
arch/powerpc/Makefile
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@ -67,7 +67,7 @@ UTS_MACHINE := $(subst $(space),,$(machine-y))
ifdef CONFIG_PPC32 ifdef CONFIG_PPC32
KBUILD_LDFLAGS_MODULE += arch/powerpc/lib/crtsavres.o KBUILD_LDFLAGS_MODULE += arch/powerpc/lib/crtsavres.o
else else
KBUILD_LDFLAGS_MODULE += -T $(srctree)/arch/powerpc/kernel/module.lds KBUILD_LDS_MODULE += $(srctree)/arch/powerpc/kernel/module.lds
ifeq ($(call ld-ifversion, -ge, 225000000, y),y) ifeq ($(call ld-ifversion, -ge, 225000000, y),y)
# Have the linker provide sfpr if possible. # Have the linker provide sfpr if possible.
# There is a corresponding test in arch/powerpc/lib/Makefile # There is a corresponding test in arch/powerpc/lib/Makefile

2
arch/riscv/Makefile
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@ -52,7 +52,7 @@ ifeq ($(CONFIG_CMODEL_MEDANY),y)
KBUILD_CFLAGS += -mcmodel=medany KBUILD_CFLAGS += -mcmodel=medany
endif endif
ifeq ($(CONFIG_MODULE_SECTIONS),y) ifeq ($(CONFIG_MODULE_SECTIONS),y)
KBUILD_LDFLAGS_MODULE += -T $(srctree)/arch/riscv/kernel/module.lds KBUILD_LDS_MODULE += $(srctree)/arch/riscv/kernel/module.lds
endif endif
KBUILD_CFLAGS_MODULE += $(call cc-option,-mno-relax) KBUILD_CFLAGS_MODULE += $(call cc-option,-mno-relax)

5
scripts/Makefile.modpost
View File

@ -126,10 +126,11 @@ quiet_cmd_ld_ko_o = LD [M] $@
cmd_ld_ko_o = \ cmd_ld_ko_o = \
$(LD) -r $(KBUILD_LDFLAGS) \ $(LD) -r $(KBUILD_LDFLAGS) \
$(KBUILD_LDFLAGS_MODULE) $(LDFLAGS_MODULE) \ $(KBUILD_LDFLAGS_MODULE) $(LDFLAGS_MODULE) \
-o $@ $(real-prereqs) ; \ $(addprefix -T , $(KBUILD_LDS_MODULE)) \
-o $@ $(filter %.o, $^); \
$(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true) $(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true)
$(modules): %.ko :%.o %.mod.o FORCE $(modules): %.ko :%.o %.mod.o $(KBUILD_LDS_MODULE) FORCE
+$(call if_changed,ld_ko_o) +$(call if_changed,ld_ko_o)
targets += $(modules) targets += $(modules)