* [PATCH v3 0/7] kbuild: various cleanups
@ 2022-09-24 18:19 Masahiro Yamada
2022-09-24 18:19 ` [PATCH v3 1/7] kbuild: hard-code KBUILD_ALLDIRS in scripts/Makefile.package Masahiro Yamada
` (7 more replies)
0 siblings, 8 replies; 30+ messages in thread
From: Masahiro Yamada @ 2022-09-24 18:19 UTC (permalink / raw)
To: linux-kbuild
Cc: linux-kernel, linux-arch, Nick Desaulniers, Nathan Chancellor,
Masahiro Yamada
- Link vmlinux and modules in parallel
- Remove head-y syntax
Masahiro Yamada (7):
kbuild: hard-code KBUILD_ALLDIRS in scripts/Makefile.package
kbuild: list sub-directories in ./Kbuild
kbuild: move .vmlinux.objs rule to Makefile.modpost
kbuild: move vmlinux.o rule to the top Makefile
kbuild: unify two modpost invocations
kbuild: use obj-y instead extra-y for objects placed at the head
kbuild: remove head-y syntax
Documentation/kbuild/makefiles.rst | 27 +----
Kbuild | 24 ++++
Makefile | 119 +++++++++++---------
arch/alpha/Makefile | 2 -
arch/alpha/kernel/Makefile | 4 +-
arch/arc/Makefile | 2 -
arch/arc/kernel/Makefile | 4 +-
arch/arm/Makefile | 3 -
arch/arm/kernel/Makefile | 4 +-
arch/arm64/Makefile | 3 -
arch/arm64/kernel/Makefile | 4 +-
arch/csky/Makefile | 2 -
arch/csky/kernel/Makefile | 4 +-
arch/hexagon/Makefile | 2 -
arch/hexagon/kernel/Makefile | 3 +-
arch/ia64/Makefile | 1 -
arch/ia64/kernel/Makefile | 4 +-
arch/loongarch/Makefile | 2 -
arch/loongarch/kernel/Makefile | 4 +-
arch/m68k/68000/Makefile | 2 +-
arch/m68k/Makefile | 9 --
arch/m68k/coldfire/Makefile | 2 +-
arch/m68k/kernel/Makefile | 23 ++--
arch/microblaze/Makefile | 1 -
arch/microblaze/kernel/Makefile | 4 +-
arch/mips/Makefile | 2 -
arch/mips/kernel/Makefile | 4 +-
arch/nios2/Makefile | 1 -
arch/nios2/kernel/Makefile | 2 +-
arch/openrisc/Makefile | 2 -
arch/openrisc/kernel/Makefile | 4 +-
arch/parisc/Makefile | 2 -
arch/parisc/kernel/Makefile | 4 +-
arch/powerpc/Makefile | 12 --
arch/powerpc/kernel/Makefile | 20 ++--
arch/riscv/Makefile | 2 -
arch/riscv/kernel/Makefile | 2 +-
arch/s390/Makefile | 2 -
arch/s390/kernel/Makefile | 4 +-
arch/sh/Makefile | 2 -
arch/sh/kernel/Makefile | 4 +-
arch/sparc/Makefile | 2 -
arch/sparc/kernel/Makefile | 3 +-
arch/x86/Makefile | 5 -
arch/x86/kernel/Makefile | 10 +-
arch/xtensa/Makefile | 2 -
arch/xtensa/kernel/Makefile | 4 +-
scripts/Makefile.lib | 2 +
scripts/Makefile.modfinal | 2 +-
scripts/Makefile.modpost | 112 ++++++++----------
scripts/Makefile.package | 5 +-
scripts/Makefile.vmlinux_o | 6 +-
scripts/clang-tools/gen_compile_commands.py | 19 +---
scripts/head-object-list.txt | 53 +++++++++
scripts/link-vmlinux.sh | 34 +-----
55 files changed, 273 insertions(+), 314 deletions(-)
create mode 100644 scripts/head-object-list.txt
--
2.34.1
^ permalink raw reply [flat|nested] 30+ messages in thread
* [PATCH v3 1/7] kbuild: hard-code KBUILD_ALLDIRS in scripts/Makefile.package
2022-09-24 18:19 [PATCH v3 0/7] kbuild: various cleanups Masahiro Yamada
@ 2022-09-24 18:19 ` Masahiro Yamada
2022-09-28 19:09 ` Nicolas Schier
2022-09-24 18:19 ` [PATCH v3 2/7] kbuild: list sub-directories in ./Kbuild Masahiro Yamada
` (6 subsequent siblings)
7 siblings, 1 reply; 30+ messages in thread
From: Masahiro Yamada @ 2022-09-24 18:19 UTC (permalink / raw)
To: linux-kbuild
Cc: linux-kernel, linux-arch, Nick Desaulniers, Nathan Chancellor,
Masahiro Yamada
My plan is to list subdirectories in ./Kbuild. Once it occurs,
$(vmlinux-alldirs) will not contain all subdirectories.
Let's hard-code the directory list until I get around to implementing
a more sophisticated way for generating a source tarball.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
---
Changes in v3:
- New patch
Makefile | 2 --
scripts/Makefile.package | 5 ++++-
2 files changed, 4 insertions(+), 3 deletions(-)
diff --git a/Makefile b/Makefile
index 57cf4a5bea6d..eb4bbbc898d0 100644
--- a/Makefile
+++ b/Makefile
@@ -1129,8 +1129,6 @@ KBUILD_VMLINUX_OBJS += $(patsubst %/,%/built-in.a, $(drivers-y))
export KBUILD_VMLINUX_OBJS KBUILD_VMLINUX_LIBS
export KBUILD_LDS := arch/$(SRCARCH)/kernel/vmlinux.lds
-# used by scripts/Makefile.package
-export KBUILD_ALLDIRS := $(sort $(filter-out arch/%,$(vmlinux-alldirs)) LICENSES arch include scripts tools)
vmlinux-deps := $(KBUILD_LDS) $(KBUILD_VMLINUX_OBJS) $(KBUILD_VMLINUX_LIBS)
diff --git a/scripts/Makefile.package b/scripts/Makefile.package
index 5017f6b2da80..8bbcced67c22 100644
--- a/scripts/Makefile.package
+++ b/scripts/Makefile.package
@@ -29,7 +29,10 @@ KDEB_SOURCENAME ?= linux-upstream
KBUILD_PKG_ROOTCMD ?="fakeroot -u"
export KDEB_SOURCENAME
# Include only those top-level files that are needed by make, plus the GPL copy
-TAR_CONTENT := $(KBUILD_ALLDIRS) .config .scmversion Makefile \
+TAR_CONTENT := Documentation LICENSES arch block certs crypto drivers fs \
+ include init io_uring ipc kernel lib mm net samples scripts \
+ security sound tools usr virt \
+ .config .scmversion Makefile \
Kbuild Kconfig COPYING $(wildcard localversion*)
MKSPEC := $(srctree)/scripts/package/mkspec
--
2.34.1
^ permalink raw reply related [flat|nested] 30+ messages in thread
* [PATCH v3 2/7] kbuild: list sub-directories in ./Kbuild
2022-09-24 18:19 [PATCH v3 0/7] kbuild: various cleanups Masahiro Yamada
2022-09-24 18:19 ` [PATCH v3 1/7] kbuild: hard-code KBUILD_ALLDIRS in scripts/Makefile.package Masahiro Yamada
@ 2022-09-24 18:19 ` Masahiro Yamada
2022-09-24 19:37 ` kernel test robot
` (2 more replies)
2022-09-24 18:19 ` [PATCH v3 3/7] kbuild: move .vmlinux.objs rule to Makefile.modpost Masahiro Yamada
` (5 subsequent siblings)
7 siblings, 3 replies; 30+ messages in thread
From: Masahiro Yamada @ 2022-09-24 18:19 UTC (permalink / raw)
To: linux-kbuild
Cc: linux-kernel, linux-arch, Nick Desaulniers, Nathan Chancellor,
Masahiro Yamada
Use the ordinary obj-y syntax to list subdirectories.
Note1:
Previously, the link order of lib-y depended on CONFIG_MODULES; lib-y
was linked before drivers-y when CONFIG_MODULES=y, otherwise after
drivers-y. This was a bug of commit 7273ad2b08f8 ("kbuild: link lib-y
objects to vmlinux forcibly when CONFIG_MODULES=y"), but it was not a
big deal after all. Now, all objects listed in lib-y are linked last,
irrespective of CONFIG_MODULES.
Note2:
Finally, the single target build in arch/*/lib/ works correctly. There was
a bug report about this. [1]
$ make ARCH=arm arch/arm/lib/findbit.o
CALL scripts/checksyscalls.sh
AS arch/arm/lib/findbit.o
[1]: https://lore.kernel.org/linux-kbuild/YvUQOwL6lD4%2F5%2FU6@shell.armlinux.org.uk/
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
---
Changes in v3:
- Also move libs-y to fix the bug reported by:
https://lore.kernel.org/linux-kbuild/20220921043946.GA1355561@roeck-us.net/
Kbuild | 24 ++++++++++++++++
Makefile | 65 ++++++++++++++------------------------------
scripts/Makefile.lib | 2 ++
3 files changed, 46 insertions(+), 45 deletions(-)
diff --git a/Kbuild b/Kbuild
index 0b9e8a16a621..8a37584d1fd6 100644
--- a/Kbuild
+++ b/Kbuild
@@ -72,3 +72,27 @@ $(atomic-checks): $(obj)/.checked-%: include/linux/atomic/% FORCE
PHONY += prepare
prepare: $(offsets-file) missing-syscalls $(atomic-checks)
@:
+
+# Ordinary directory descending
+# ---------------------------------------------------------------------------
+
+obj-y += init/
+obj-y += usr/
+obj-y += arch/$(SRCARCH)/
+obj-y += $(ARCH_CORE)
+obj-y += kernel/
+obj-y += certs/
+obj-y += mm/
+obj-y += fs/
+obj-y += ipc/
+obj-y += security/
+obj-y += crypto/
+obj-$(CONFIG_BLOCK) += block/
+obj-$(CONFIG_IO_URING) += io_uring/
+obj-y += $(ARCH_LIB)
+obj-y += drivers/
+obj-y += sound/
+obj-$(CONFIG_SAMPLES) += samples/
+obj-$(CONFIG_NET) += net/
+obj-y += virt/
+obj-y += $(ARCH_DRIVERS)
diff --git a/Makefile b/Makefile
index eb4bbbc898d0..f793c3b1eaec 100644
--- a/Makefile
+++ b/Makefile
@@ -676,11 +676,8 @@ endif
ifeq ($(KBUILD_EXTMOD),)
# Objects we will link into vmlinux / subdirs we need to visit
-core-y := init/ usr/ arch/$(SRCARCH)/
-drivers-y := drivers/ sound/
-drivers-$(CONFIG_SAMPLES) += samples/
-drivers-$(CONFIG_NET) += net/
-drivers-y += virt/
+core-y :=
+drivers-y :=
libs-y := lib/
endif # KBUILD_EXTMOD
@@ -1099,33 +1096,24 @@ export MODORDER := $(extmod_prefix)modules.order
export MODULES_NSDEPS := $(extmod_prefix)modules.nsdeps
ifeq ($(KBUILD_EXTMOD),)
-core-y += kernel/ certs/ mm/ fs/ ipc/ security/ crypto/
-core-$(CONFIG_BLOCK) += block/
-core-$(CONFIG_IO_URING) += io_uring/
-vmlinux-dirs := $(patsubst %/,%,$(filter %/, \
- $(core-y) $(core-m) $(drivers-y) $(drivers-m) \
- $(libs-y) $(libs-m)))
-
-vmlinux-alldirs := $(sort $(vmlinux-dirs) Documentation . \
+build-dir := .
+clean-dirs := $(sort . Documentation \
$(patsubst %/,%,$(filter %/, $(core-) \
$(drivers-) $(libs-))))
-build-dirs := $(vmlinux-dirs)
-clean-dirs := $(vmlinux-alldirs)
-
-subdir-modorder := $(addsuffix /modules.order, $(build-dirs))
-
+export ARCH_CORE := $(core-y)
+export ARCH_LIB := $(filter %/, $(libs-y))
+export ARCH_DRIVERS := $(drivers-y) $(drivers-m)
# Externally visible symbols (used by link-vmlinux.sh)
-KBUILD_VMLINUX_OBJS := $(head-y) $(patsubst %/,%/built-in.a, $(core-y))
-KBUILD_VMLINUX_OBJS += $(addsuffix built-in.a, $(filter %/, $(libs-y)))
+
+KBUILD_VMLINUX_OBJS := $(head-y) ./built-in.a
ifdef CONFIG_MODULES
KBUILD_VMLINUX_OBJS += $(patsubst %/, %/lib.a, $(filter %/, $(libs-y)))
KBUILD_VMLINUX_LIBS := $(filter-out %/, $(libs-y))
else
KBUILD_VMLINUX_LIBS := $(patsubst %/,%/lib.a, $(libs-y))
endif
-KBUILD_VMLINUX_OBJS += $(patsubst %/,%/built-in.a, $(drivers-y))
export KBUILD_VMLINUX_OBJS KBUILD_VMLINUX_LIBS
export KBUILD_LDS := arch/$(SRCARCH)/kernel/vmlinux.lds
@@ -1140,7 +1128,7 @@ ifdef CONFIG_TRIM_UNUSED_KSYMS
# (this can be evaluated only once include/config/auto.conf has been included)
KBUILD_MODULES := 1
-autoksyms_recursive: descend modules.order
+autoksyms_recursive: $(build-dir) modules.order
$(Q)$(CONFIG_SHELL) $(srctree)/scripts/adjust_autoksyms.sh \
"$(MAKE) -f $(srctree)/Makefile autoksyms_recursive"
endif
@@ -1168,7 +1156,7 @@ targets := vmlinux
# The actual objects are generated when descending,
# make sure no implicit rule kicks in
-$(sort $(vmlinux-deps) $(subdir-modorder)): descend ;
+$(sort $(vmlinux-deps)): $(build-dir) ;
filechk_kernel.release = \
echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
@@ -1439,13 +1427,6 @@ endif
modules: $(if $(KBUILD_BUILTIN),vmlinux) modules_prepare
-cmd_modules_order = cat $(real-prereqs) > $@
-
-modules.order: $(subdir-modorder) FORCE
- $(call if_changed,modules_order)
-
-targets += modules.order
-
# Target to prepare building external modules
modules_prepare: prepare
$(Q)$(MAKE) $(build)=scripts scripts/module.lds
@@ -1716,9 +1697,7 @@ else # KBUILD_EXTMOD
KBUILD_BUILTIN :=
KBUILD_MODULES := 1
-build-dirs := $(KBUILD_EXTMOD)
-$(MODORDER): descend
- @:
+build-dir := $(KBUILD_EXTMOD)
compile_commands.json: $(extmod_prefix)compile_commands.json
PHONY += compile_commands.json
@@ -1756,6 +1735,9 @@ PHONY += modules modules_install modules_prepare
ifdef CONFIG_MODULES
+$(MODORDER): $(build-dir)
+ @:
+
modules: modules_check
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
@@ -1809,7 +1791,7 @@ single-no-ko := $(filter-out $(single-ko), $(MAKECMDGOALS)) \
$(single-ko): single_modpost
@:
-$(single-no-ko): descend
+$(single-no-ko): $(build-dir)
@:
# Remove MODORDER when done because it is not the real one.
@@ -1819,24 +1801,17 @@ single_modpost: $(single-no-ko) modules_prepare
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
$(Q)rm -f $(MODORDER)
-single-goals := $(addprefix $(extmod_prefix), $(single-no-ko))
-
-# trim unrelated directories
-build-dirs := $(foreach d, $(build-dirs), \
- $(if $(filter $d/%, $(single-goals)), $d))
+single-goals := $(addprefix $(build-dir)/, $(single-no-ko))
endif
-# Handle descending into subdirectories listed in $(build-dirs)
# Preset locale variables to speed up the build process. Limit locale
# tweaks to this spot to avoid wrong language settings when running
# make menuconfig etc.
# Error messages still appears in the original language
-PHONY += descend $(build-dirs)
-descend: $(build-dirs)
-$(build-dirs): prepare
- $(Q)$(MAKE) $(build)=$@ need-builtin=1 need-modorder=1 \
- $(filter $@/%, $(single-goals))
+PHONY += $(build-dir)
+$(build-dir): prepare
+ $(Q)$(MAKE) $(build)=$@ need-builtin=1 need-modorder=1 $(single-goals)
clean-dirs := $(addprefix _clean_, $(clean-dirs))
PHONY += $(clean-dirs) clean
diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index 3fb6a99e78c4..140dcc3c57bd 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -89,6 +89,7 @@ always-y += $(dtb-y)
# Add subdir path
+ifneq ($(obj),.)
extra-y := $(addprefix $(obj)/,$(extra-y))
always-y := $(addprefix $(obj)/,$(always-y))
targets := $(addprefix $(obj)/,$(targets))
@@ -100,6 +101,7 @@ multi-obj-m := $(addprefix $(obj)/, $(multi-obj-m))
multi-dtb-y := $(addprefix $(obj)/, $(multi-dtb-y))
real-dtb-y := $(addprefix $(obj)/, $(real-dtb-y))
subdir-ym := $(addprefix $(obj)/,$(subdir-ym))
+endif
# Finds the multi-part object the current object will be linked into.
# If the object belongs to two or more multi-part objects, list them all.
--
2.34.1
^ permalink raw reply related [flat|nested] 30+ messages in thread
* [PATCH v3 3/7] kbuild: move .vmlinux.objs rule to Makefile.modpost
2022-09-24 18:19 [PATCH v3 0/7] kbuild: various cleanups Masahiro Yamada
2022-09-24 18:19 ` [PATCH v3 1/7] kbuild: hard-code KBUILD_ALLDIRS in scripts/Makefile.package Masahiro Yamada
2022-09-24 18:19 ` [PATCH v3 2/7] kbuild: list sub-directories in ./Kbuild Masahiro Yamada
@ 2022-09-24 18:19 ` Masahiro Yamada
2022-09-28 19:35 ` Nicolas Schier
2022-09-24 18:19 ` [PATCH v3 4/7] kbuild: move vmlinux.o rule to the top Makefile Masahiro Yamada
` (4 subsequent siblings)
7 siblings, 1 reply; 30+ messages in thread
From: Masahiro Yamada @ 2022-09-24 18:19 UTC (permalink / raw)
To: linux-kbuild
Cc: linux-kernel, linux-arch, Nick Desaulniers, Nathan Chancellor,
Masahiro Yamada
.vmlinux.objs is used by modpost, so scripts/Makefile.modpost is
a better place to generate it.
It is used only when CONFIG_MODVERSIONS=y. It should be guarded
by "ifdef CONFIG_MODVERSIONS".
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
---
(no changes since v1)
Makefile | 2 +-
scripts/Makefile.modpost | 30 ++++++++++++++++++++++++++++--
scripts/link-vmlinux.sh | 18 ------------------
3 files changed, 29 insertions(+), 21 deletions(-)
diff --git a/Makefile b/Makefile
index f793c3b1eaec..92413b6de451 100644
--- a/Makefile
+++ b/Makefile
@@ -1477,7 +1477,7 @@ endif # CONFIG_MODULES
# Directories & files removed with 'make clean'
CLEAN_FILES += include/ksym vmlinux.symvers modules-only.symvers \
modules.builtin modules.builtin.modinfo modules.nsdeps \
- compile_commands.json .thinlto-cache
+ compile_commands.json .thinlto-cache .vmlinux.objs
# Directories & files removed with 'make mrproper'
MRPROPER_FILES += include/config include/generated \
diff --git a/scripts/Makefile.modpost b/scripts/Makefile.modpost
index 911606496341..04ad00917b2f 100644
--- a/scripts/Makefile.modpost
+++ b/scripts/Makefile.modpost
@@ -57,6 +57,32 @@ vmlinux.symvers: vmlinux.o
__modpost: vmlinux.symvers
+# Generate the list of in-tree objects in vmlinux
+# ---------------------------------------------------------------------------
+
+# This is used to retrieve symbol versions generated by genksyms.
+ifdef CONFIG_MODVERSIONS
+vmlinux.symvers: .vmlinux.objs
+endif
+
+# Ignore libgcc.a
+# Some architectures do '$(CC) --print-libgcc-file-name' to borrow libgcc.a
+# from the toolchain, but there is no EXPORT_SYMBOL in it.
+
+quiet_cmd_vmlinux_objs = GEN $@
+ cmd_vmlinux_objs = \
+ for f in $(real-prereqs); do \
+ case $${f} in \
+ *libgcc.a) ;; \
+ *.a) $(AR) t $${f} ;; \
+ *) echo $${f} ;; \
+ esac \
+ done > $@
+
+targets += .vmlinux.objs
+.vmlinux.objs: $(KBUILD_VMLINUX_OBJS) $(KBUILD_VMLINUX_LIBS) FORCE
+ $(call if_changed,vmlinux_objs)
+
else
ifeq ($(KBUILD_EXTMOD),)
@@ -134,6 +160,8 @@ ifneq ($(KBUILD_MODPOST_NOFINAL),1)
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modfinal
endif
+endif
+
PHONY += FORCE
FORCE:
@@ -141,6 +169,4 @@ existing-targets := $(wildcard $(sort $(targets)))
-include $(foreach f,$(existing-targets),$(dir $(f)).$(notdir $(f)).cmd)
-endif
-
.PHONY: $(PHONY)
diff --git a/scripts/link-vmlinux.sh b/scripts/link-vmlinux.sh
index 8d982574145a..161bca64e8aa 100755
--- a/scripts/link-vmlinux.sh
+++ b/scripts/link-vmlinux.sh
@@ -199,7 +199,6 @@ cleanup()
rm -f System.map
rm -f vmlinux
rm -f vmlinux.map
- rm -f .vmlinux.objs
rm -f .vmlinux.export.c
}
@@ -218,23 +217,6 @@ fi
#link vmlinux.o
${MAKE} -f "${srctree}/scripts/Makefile.vmlinux_o"
-# Generate the list of in-tree objects in vmlinux
-#
-# This is used to retrieve symbol versions generated by genksyms.
-for f in ${KBUILD_VMLINUX_OBJS} ${KBUILD_VMLINUX_LIBS}; do
- case ${f} in
- *libgcc.a)
- # Some architectures do '$(CC) --print-libgcc-file-name' to
- # borrow libgcc.a from the toolchain.
- # There is no EXPORT_SYMBOL in external objects. Ignore this.
- ;;
- *.a)
- ${AR} t ${f} ;;
- *)
- echo ${f} ;;
- esac
-done > .vmlinux.objs
-
# modpost vmlinux.o to check for section mismatches
${MAKE} -f "${srctree}/scripts/Makefile.modpost" MODPOST_VMLINUX=1
--
2.34.1
^ permalink raw reply related [flat|nested] 30+ messages in thread
* [PATCH v3 4/7] kbuild: move vmlinux.o rule to the top Makefile
2022-09-24 18:19 [PATCH v3 0/7] kbuild: various cleanups Masahiro Yamada
` (2 preceding siblings ...)
2022-09-24 18:19 ` [PATCH v3 3/7] kbuild: move .vmlinux.objs rule to Makefile.modpost Masahiro Yamada
@ 2022-09-24 18:19 ` Masahiro Yamada
2022-09-28 19:37 ` Nicolas Schier
2022-09-24 18:19 ` [PATCH v3 5/7] kbuild: unify two modpost invocations Masahiro Yamada
` (3 subsequent siblings)
7 siblings, 1 reply; 30+ messages in thread
From: Masahiro Yamada @ 2022-09-24 18:19 UTC (permalink / raw)
To: linux-kbuild
Cc: linux-kernel, linux-arch, Nick Desaulniers, Nathan Chancellor,
Masahiro Yamada
Move the build rules of vmlinux.o out of scripts/link-vmlinux.sh to
clearly separate 1) pre-modpost, 2) modpost, 3) post-modpost stages.
This will make furture refactoring possible.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
---
(no changes since v1)
Makefile | 5 ++++-
scripts/link-vmlinux.sh | 3 ---
2 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/Makefile b/Makefile
index 92413b6de451..b5dfb54b1993 100644
--- a/Makefile
+++ b/Makefile
@@ -1142,6 +1142,9 @@ quiet_cmd_autoksyms_h = GEN $@
$(autoksyms_h):
$(call cmd,autoksyms_h)
+vmlinux.o: autoksyms_recursive $(KBUILD_VMLINUX_OBJS) $(KBUILD_VMLINUX_LIBS) FORCE
+ $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.vmlinux_o
+
ARCH_POSTLINK := $(wildcard $(srctree)/arch/$(SRCARCH)/Makefile.postlink)
# Final link of vmlinux with optional arch pass after final link
@@ -1149,7 +1152,7 @@ cmd_link-vmlinux = \
$(CONFIG_SHELL) $< "$(LD)" "$(KBUILD_LDFLAGS)" "$(LDFLAGS_vmlinux)"; \
$(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true)
-vmlinux: scripts/link-vmlinux.sh autoksyms_recursive $(vmlinux-deps) FORCE
+vmlinux: scripts/link-vmlinux.sh vmlinux.o $(KBUILD_LDS) FORCE
+$(call if_changed_dep,link-vmlinux)
targets := vmlinux
diff --git a/scripts/link-vmlinux.sh b/scripts/link-vmlinux.sh
index 161bca64e8aa..07486f90d5e2 100755
--- a/scripts/link-vmlinux.sh
+++ b/scripts/link-vmlinux.sh
@@ -214,9 +214,6 @@ if [ "$1" = "clean" ]; then
exit 0
fi
-#link vmlinux.o
-${MAKE} -f "${srctree}/scripts/Makefile.vmlinux_o"
-
# modpost vmlinux.o to check for section mismatches
${MAKE} -f "${srctree}/scripts/Makefile.modpost" MODPOST_VMLINUX=1
--
2.34.1
^ permalink raw reply related [flat|nested] 30+ messages in thread
* [PATCH v3 5/7] kbuild: unify two modpost invocations
2022-09-24 18:19 [PATCH v3 0/7] kbuild: various cleanups Masahiro Yamada
` (3 preceding siblings ...)
2022-09-24 18:19 ` [PATCH v3 4/7] kbuild: move vmlinux.o rule to the top Makefile Masahiro Yamada
@ 2022-09-24 18:19 ` Masahiro Yamada
2022-09-28 19:59 ` Nicolas Schier
2022-09-24 18:19 ` [PATCH v3 6/7] kbuild: use obj-y instead extra-y for objects placed at the head Masahiro Yamada
` (2 subsequent siblings)
7 siblings, 1 reply; 30+ messages in thread
From: Masahiro Yamada @ 2022-09-24 18:19 UTC (permalink / raw)
To: linux-kbuild
Cc: linux-kernel, linux-arch, Nick Desaulniers, Nathan Chancellor,
Masahiro Yamada
Currently, modpost is executed twice; first for vmlinux, second
for modules.
This commit merges them.
Current build flow
==================
1) build obj-y and obj-m objects
2) link vmlinux.o
3) modpost for vmlinux
4) link vmlinux
5) modpost for modules
6) link modules (*.ko)
The build steps 1) through 6) are serialized, that is, modules are
built after vmlinux. You do not get benefits of parallel builds when
scripts/link-vmlinux.sh is being run.
New build flow
==============
1) build obj-y and obj-m objects
2) link vmlinux.o
3) modpost for vmlinux and modules
4a) link vmlinux
4b) link modules (*.ko)
In the new build flow, modpost is invoked just once.
vmlinux and modules are built in parallel. One exception is
CONFIG_DEBUG_INFO_BTF_MODULES=y, where modules depend on vmlinux.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
---
(no changes since v1)
Makefile | 30 ++++++++++---
scripts/Makefile.modfinal | 2 +-
scripts/Makefile.modpost | 93 ++++++++++++---------------------------
scripts/link-vmlinux.sh | 3 --
4 files changed, 53 insertions(+), 75 deletions(-)
diff --git a/Makefile b/Makefile
index b5dfb54b1993..cf9d7b1d8c14 100644
--- a/Makefile
+++ b/Makefile
@@ -1152,7 +1152,7 @@ cmd_link-vmlinux = \
$(CONFIG_SHELL) $< "$(LD)" "$(KBUILD_LDFLAGS)" "$(LDFLAGS_vmlinux)"; \
$(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true)
-vmlinux: scripts/link-vmlinux.sh vmlinux.o $(KBUILD_LDS) FORCE
+vmlinux: scripts/link-vmlinux.sh vmlinux.o $(KBUILD_LDS) modpost FORCE
+$(call if_changed_dep,link-vmlinux)
targets := vmlinux
@@ -1428,7 +1428,13 @@ endif
# Build modules
#
-modules: $(if $(KBUILD_BUILTIN),vmlinux) modules_prepare
+# *.ko are usually independent of vmlinux, but CONFIG_DEBUG_INFOBTF_MODULES
+# is an exception.
+ifdef CONFIG_DEBUG_INFO_BTF_MODULES
+modules: vmlinux
+endif
+
+modules: modules_prepare
# Target to prepare building external modules
modules_prepare: prepare
@@ -1741,8 +1747,12 @@ ifdef CONFIG_MODULES
$(MODORDER): $(build-dir)
@:
-modules: modules_check
- $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
+# KBUILD_MODPOST_NOFINAL can be set to skip the final link of modules.
+# This is solely useful to speed up test compiles.
+modules: modpost
+ifneq ($(KBUILD_MODPOST_NOFINAL),1)
+ $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modfinal
+endif
PHONY += modules_check
modules_check: $(MODORDER)
@@ -1773,6 +1783,11 @@ KBUILD_MODULES :=
endif # CONFIG_MODULES
+PHONY += modpost
+modpost: $(if $(single-build),, $(if $(KBUILD_BUILTIN), vmlinux.o)) \
+ $(if $(KBUILD_MODULES), modules_check)
+ $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
+
# Single targets
# ---------------------------------------------------------------------------
# To build individual files in subdirectories, you can do like this:
@@ -1792,16 +1807,19 @@ single-ko := $(sort $(filter %.ko, $(MAKECMDGOALS)))
single-no-ko := $(filter-out $(single-ko), $(MAKECMDGOALS)) \
$(foreach x, o mod, $(patsubst %.ko, %.$x, $(single-ko)))
-$(single-ko): single_modpost
+$(single-ko): single_modules
@:
$(single-no-ko): $(build-dir)
@:
# Remove MODORDER when done because it is not the real one.
PHONY += single_modpost
-single_modpost: $(single-no-ko) modules_prepare
+single_modules: $(single-no-ko) modules_prepare
$(Q){ $(foreach m, $(single-ko), echo $(extmod_prefix)$m;) } > $(MODORDER)
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
+ifneq ($(KBUILD_MODPOST_NOFINAL),1)
+ $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modfinal
+endif
$(Q)rm -f $(MODORDER)
single-goals := $(addprefix $(build-dir)/, $(single-no-ko))
diff --git a/scripts/Makefile.modfinal b/scripts/Makefile.modfinal
index 35100e981f4a..a3cf9e3647c9 100644
--- a/scripts/Makefile.modfinal
+++ b/scripts/Makefile.modfinal
@@ -55,7 +55,7 @@ if_changed_except = $(if $(call newer_prereqs_except,$(2))$(cmd-check), \
printf '%s\n' 'cmd_$@ := $(make-cmd)' > $(dot-target).cmd, @:)
# Re-generate module BTFs if either module's .ko or vmlinux changed
-$(modules): %.ko: %.o %.mod.o scripts/module.lds $(if $(KBUILD_BUILTIN),vmlinux) FORCE
+$(modules): %.ko: %.o %.mod.o scripts/module.lds $(and $(CONFIG_DEBUG_INFO_BTF_MODULES),$(KBUILD_BUILTIN),vmlinux) FORCE
+$(call if_changed_except,ld_ko_o,vmlinux)
ifdef CONFIG_DEBUG_INFO_BTF_MODULES
+$(if $(newer-prereqs),$(call cmd,btf_ko))
diff --git a/scripts/Makefile.modpost b/scripts/Makefile.modpost
index 04ad00917b2f..2daf760eeb25 100644
--- a/scripts/Makefile.modpost
+++ b/scripts/Makefile.modpost
@@ -32,9 +32,6 @@
# Step 4 is solely used to allow module versioning in external modules,
# where the CRC of each module is retrieved from the Module.symvers file.
-# KBUILD_MODPOST_NOFINAL can be set to skip the final link of modules.
-# This is solely useful to speed up test compiles
-
PHONY := __modpost
__modpost:
@@ -45,24 +42,23 @@ MODPOST = scripts/mod/modpost \
$(if $(CONFIG_MODVERSIONS),-m) \
$(if $(CONFIG_MODULE_SRCVERSION_ALL),-a) \
$(if $(CONFIG_SECTION_MISMATCH_WARN_ONLY),,-E) \
+ $(if $(KBUILD_NSDEPS),-d $(MODULES_NSDEPS)) \
+ $(if $(CONFIG_MODULE_ALLOW_MISSING_NAMESPACE_IMPORTS)$(KBUILD_NSDEPS),-N) \
-o $@
-ifdef MODPOST_VMLINUX
-
-quiet_cmd_modpost = MODPOST $@
- cmd_modpost = $(MODPOST) $<
-
-vmlinux.symvers: vmlinux.o
- $(call cmd,modpost)
+# 'make -i -k' ignores compile errors, and builds as many modules as possible.
+ifneq ($(findstring i,$(filter-out --%,$(MAKEFLAGS))),)
+MODPOST += -n
+endif
-__modpost: vmlinux.symvers
+ifeq ($(KBUILD_EXTMOD),)
# Generate the list of in-tree objects in vmlinux
# ---------------------------------------------------------------------------
# This is used to retrieve symbol versions generated by genksyms.
ifdef CONFIG_MODVERSIONS
-vmlinux.symvers: .vmlinux.objs
+vmlinux.symvers Module.symvers: .vmlinux.objs
endif
# Ignore libgcc.a
@@ -83,24 +79,12 @@ targets += .vmlinux.objs
.vmlinux.objs: $(KBUILD_VMLINUX_OBJS) $(KBUILD_VMLINUX_LIBS) FORCE
$(call if_changed,vmlinux_objs)
-else
-
-ifeq ($(KBUILD_EXTMOD),)
-
-input-symdump := vmlinux.symvers
-output-symdump := modules-only.symvers
-
-quiet_cmd_cat = GEN $@
- cmd_cat = cat $(real-prereqs) > $@
-
-ifneq ($(wildcard vmlinux.symvers),)
-
-__modpost: Module.symvers
-Module.symvers: vmlinux.symvers modules-only.symvers FORCE
- $(call if_changed,cat)
-
-targets += Module.symvers
+vmlinux.o-if-present := $(wildcard vmlinux.o)
+output-symdump := vmlinux.symvers
+ifdef KBUILD_MODULES
+output-symdump := $(if $(vmlinux.o-if-present), Module.symvers, modules-only.symvers)
+missing-input := $(filter-out $(vmlinux.o-if-present),vmlinux.o)
endif
else
@@ -112,56 +96,35 @@ src := $(obj)
# Include the module's Makefile to find KBUILD_EXTRA_SYMBOLS
include $(or $(wildcard $(src)/Kbuild), $(src)/Makefile)
-# modpost option for external modules
-MODPOST += -e
-
-input-symdump := Module.symvers $(KBUILD_EXTRA_SYMBOLS)
+module.symvers-if-present := $(wildcard Module.symvers)
output-symdump := $(KBUILD_EXTMOD)/Module.symvers
+missing-input := $(filter-out $(module.symvers-if-present), Module.symvers)
-endif
-
-existing-input-symdump := $(wildcard $(input-symdump))
-
-# modpost options for modules (both in-kernel and external)
-MODPOST += \
- $(addprefix -i ,$(existing-input-symdump)) \
- $(if $(KBUILD_NSDEPS),-d $(MODULES_NSDEPS)) \
- $(if $(CONFIG_MODULE_ALLOW_MISSING_NAMESPACE_IMPORTS)$(KBUILD_NSDEPS),-N)
-
-# 'make -i -k' ignores compile errors, and builds as many modules as possible.
-ifneq ($(findstring i,$(filter-out --%,$(MAKEFLAGS))),)
-MODPOST += -n
-endif
+MODPOST += -e $(addprefix -i ,$(module.symvers-if-present) $(KBUILD_EXTRA_SYMBOLS))
-# Clear VPATH to not search for *.symvers in $(srctree). Check only $(objtree).
-VPATH :=
-$(input-symdump):
- @echo >&2 'WARNING: Symbol version dump "$@" is missing.'
- @echo >&2 ' Modules may not have dependencies or modversions.'
- @echo >&2 ' You may get many unresolved symbol warnings.'
+endif # ($(KBUILD_EXTMOD),)
-# KBUILD_MODPOST_WARN can be set to avoid error out in case of undefined symbols
-ifneq ($(KBUILD_MODPOST_WARN)$(filter-out $(existing-input-symdump), $(input-symdump)),)
+ifneq ($(KBUILD_MODPOST_WARN)$(missing-input),)
MODPOST += -w
endif
+modorder-if-needed := $(if $(KBUILD_MODULES), $(MODORDER))
+
# Read out modules.order to pass in modpost.
# Otherwise, allmodconfig would fail with "Argument list too long".
quiet_cmd_modpost = MODPOST $@
- cmd_modpost = sed 's/ko$$/o/' $< | $(MODPOST) -T -
-
-$(output-symdump): $(MODORDER) $(input-symdump) FORCE
- $(call if_changed,modpost)
+ cmd_modpost = \
+ $(if $(missing-input), \
+ echo >&2 "WARNING: $(missing-input) is missing."; \
+ echo >&2 " Modules may not have dependencies or modversions."; \
+ echo >&2 " You may get many unresolved symbol warnings.";) \
+ sed 's/ko$$/o/' $(or $(modorder-if-needed), /dev/null) | $(MODPOST) $(vmlinux.o-if-present) -T -
targets += $(output-symdump)
+$(output-symdump): $(modorder-if-needed) $(vmlinux.o-if-present) $(moudle.symvers-if-present) FORCE
+ $(call if_changed,modpost)
__modpost: $(output-symdump)
-ifneq ($(KBUILD_MODPOST_NOFINAL),1)
- $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modfinal
-endif
-
-endif
-
PHONY += FORCE
FORCE:
diff --git a/scripts/link-vmlinux.sh b/scripts/link-vmlinux.sh
index 07486f90d5e2..6a197d8a88ac 100755
--- a/scripts/link-vmlinux.sh
+++ b/scripts/link-vmlinux.sh
@@ -214,9 +214,6 @@ if [ "$1" = "clean" ]; then
exit 0
fi
-# modpost vmlinux.o to check for section mismatches
-${MAKE} -f "${srctree}/scripts/Makefile.modpost" MODPOST_VMLINUX=1
-
info MODINFO modules.builtin.modinfo
${OBJCOPY} -j .modinfo -O binary vmlinux.o modules.builtin.modinfo
info GEN modules.builtin
--
2.34.1
^ permalink raw reply related [flat|nested] 30+ messages in thread
* [PATCH v3 6/7] kbuild: use obj-y instead extra-y for objects placed at the head
2022-09-24 18:19 [PATCH v3 0/7] kbuild: various cleanups Masahiro Yamada
` (4 preceding siblings ...)
2022-09-24 18:19 ` [PATCH v3 5/7] kbuild: unify two modpost invocations Masahiro Yamada
@ 2022-09-24 18:19 ` Masahiro Yamada
2022-09-28 20:15 ` Nicolas Schier
2022-10-24 18:24 ` Jiri Slaby
2022-09-24 18:19 ` [PATCH v3 7/7] kbuild: remove head-y syntax Masahiro Yamada
2022-09-26 21:39 ` [PATCH v3 0/7] kbuild: various cleanups Nick Desaulniers
7 siblings, 2 replies; 30+ messages in thread
From: Masahiro Yamada @ 2022-09-24 18:19 UTC (permalink / raw)
To: linux-kbuild
Cc: linux-kernel, linux-arch, Nick Desaulniers, Nathan Chancellor,
Masahiro Yamada
The objects placed at the head of vmlinux need special treatments:
- arch/$(SRCARCH)/Makefile adds them to head-y in order to place
them before other archives in the linker command line.
- arch/$(SRCARCH)/kernel/Makefile adds them to extra-y instead of
obj-y to avoid them going into built-in.a.
This commit gets rid of the latter.
Create vmlinux.a to collect all the objects that are unconditionally
linked to vmlinux. The objects listed in head-y are moved to the head
of vmlinux.a by using 'ar m'.
With this, arch/$(SRCARCH)/kernel/Makefile can consistently use obj-y
for builtin objects.
There is no *.o that is directly linked to vmlinux. Drop unneeded code
in scripts/clang-tools/gen_compile_commands.py.
$(AR) mPi needs 'T' to workaround the llvm-ar bug. The fix was suggested
by Nathan Chancellor [1].
[1]: https://lore.kernel.org/llvm/YyjjT5gQ2hGMH0ni@dev-arch.thelio-3990X/
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
---
Changes in v3:
- Fix build error for m68k
- Fix the bug for llvm-ar <= 14
Documentation/kbuild/makefiles.rst | 18 +---------------
Makefile | 23 ++++++++++++++++-----
arch/alpha/kernel/Makefile | 4 ++--
arch/arc/kernel/Makefile | 4 ++--
arch/arm/kernel/Makefile | 4 ++--
arch/arm64/kernel/Makefile | 4 ++--
arch/csky/kernel/Makefile | 4 ++--
arch/hexagon/kernel/Makefile | 3 ++-
arch/ia64/kernel/Makefile | 4 ++--
arch/loongarch/kernel/Makefile | 4 ++--
arch/m68k/68000/Makefile | 2 +-
arch/m68k/coldfire/Makefile | 2 +-
arch/m68k/kernel/Makefile | 23 +++++++++++----------
arch/microblaze/kernel/Makefile | 4 ++--
arch/mips/kernel/Makefile | 4 ++--
arch/nios2/kernel/Makefile | 2 +-
arch/openrisc/kernel/Makefile | 4 ++--
arch/parisc/kernel/Makefile | 4 ++--
arch/powerpc/kernel/Makefile | 20 +++++++++---------
arch/riscv/kernel/Makefile | 2 +-
arch/s390/kernel/Makefile | 4 ++--
arch/sh/kernel/Makefile | 4 ++--
arch/sparc/kernel/Makefile | 3 +--
arch/x86/kernel/Makefile | 10 ++++-----
arch/xtensa/kernel/Makefile | 4 ++--
scripts/Makefile.modpost | 5 ++---
scripts/Makefile.vmlinux_o | 6 +++---
scripts/clang-tools/gen_compile_commands.py | 19 +----------------
scripts/link-vmlinux.sh | 10 ++++-----
29 files changed, 91 insertions(+), 113 deletions(-)
diff --git a/Documentation/kbuild/makefiles.rst b/Documentation/kbuild/makefiles.rst
index ee7e3ea1fbe1..5a6a8426cc97 100644
--- a/Documentation/kbuild/makefiles.rst
+++ b/Documentation/kbuild/makefiles.rst
@@ -340,19 +340,7 @@ more details, with real examples.
Examples are:
- 1) head objects
-
- Some objects must be placed at the head of vmlinux. They are
- directly linked to vmlinux without going through built-in.a
- A typical use-case is an object that contains the entry point.
-
- arch/$(SRCARCH)/Makefile should specify such objects as head-y.
-
- Discussion:
- Given that we can control the section order in the linker script,
- why do we need head-y?
-
- 2) vmlinux linker script
+ 1) vmlinux linker script
The linker script for vmlinux is located at
arch/$(SRCARCH)/kernel/vmlinux.lds
@@ -360,10 +348,6 @@ more details, with real examples.
Example::
# arch/x86/kernel/Makefile
- extra-y := head_$(BITS).o
- extra-y += head$(BITS).o
- extra-y += ebda.o
- extra-y += platform-quirks.o
extra-y += vmlinux.lds
$(extra-y) should only contain targets needed for vmlinux.
diff --git a/Makefile b/Makefile
index cf9d7b1d8c14..a8c19f92ac9e 100644
--- a/Makefile
+++ b/Makefile
@@ -645,6 +645,8 @@ else
__all: modules
endif
+targets :=
+
# Decide whether to build built-in, modular, or both.
# Normally, just do built-in.
@@ -1107,7 +1109,7 @@ export ARCH_LIB := $(filter %/, $(libs-y))
export ARCH_DRIVERS := $(drivers-y) $(drivers-m)
# Externally visible symbols (used by link-vmlinux.sh)
-KBUILD_VMLINUX_OBJS := $(head-y) ./built-in.a
+KBUILD_VMLINUX_OBJS := ./built-in.a
ifdef CONFIG_MODULES
KBUILD_VMLINUX_OBJS += $(patsubst %/, %/lib.a, $(filter %/, $(libs-y)))
KBUILD_VMLINUX_LIBS := $(filter-out %/, $(libs-y))
@@ -1115,7 +1117,7 @@ else
KBUILD_VMLINUX_LIBS := $(patsubst %/,%/lib.a, $(libs-y))
endif
-export KBUILD_VMLINUX_OBJS KBUILD_VMLINUX_LIBS
+export KBUILD_VMLINUX_LIBS
export KBUILD_LDS := arch/$(SRCARCH)/kernel/vmlinux.lds
vmlinux-deps := $(KBUILD_LDS) $(KBUILD_VMLINUX_OBJS) $(KBUILD_VMLINUX_LIBS)
@@ -1142,7 +1144,18 @@ quiet_cmd_autoksyms_h = GEN $@
$(autoksyms_h):
$(call cmd,autoksyms_h)
-vmlinux.o: autoksyms_recursive $(KBUILD_VMLINUX_OBJS) $(KBUILD_VMLINUX_LIBS) FORCE
+# '$(AR) mPi' needs 'T' to workaround the bug of llvm-ar <= 14
+quiet_cmd_ar_vmlinux.a = AR $@
+ cmd_ar_vmlinux.a = \
+ rm -f $@; \
+ $(AR) cDPrST $@ $(KBUILD_VMLINUX_OBJS); \
+ $(AR) mPiT $$($(AR) t $@ | head -n1) $@ $(head-y)
+
+targets += vmlinux.a
+vmlinux.a: $(KBUILD_VMLINUX_OBJS) FORCE
+ $(call if_changed,ar_vmlinux.a)
+
+vmlinux.o: autoksyms_recursive vmlinux.a $(KBUILD_VMLINUX_LIBS) FORCE
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.vmlinux_o
ARCH_POSTLINK := $(wildcard $(srctree)/arch/$(SRCARCH)/Makefile.postlink)
@@ -1155,7 +1168,7 @@ cmd_link-vmlinux = \
vmlinux: scripts/link-vmlinux.sh vmlinux.o $(KBUILD_LDS) modpost FORCE
+$(call if_changed_dep,link-vmlinux)
-targets := vmlinux
+targets += vmlinux
# The actual objects are generated when descending,
# make sure no implicit rule kicks in
@@ -1880,7 +1893,7 @@ quiet_cmd_gen_compile_commands = GEN $@
cmd_gen_compile_commands = $(PYTHON3) $< -a $(AR) -o $@ $(filter-out $<, $(real-prereqs))
$(extmod_prefix)compile_commands.json: scripts/clang-tools/gen_compile_commands.py \
- $(if $(KBUILD_EXTMOD),,$(KBUILD_VMLINUX_OBJS) $(KBUILD_VMLINUX_LIBS)) \
+ $(if $(KBUILD_EXTMOD),, vmlinux.a $(KBUILD_VMLINUX_LIBS)) \
$(if $(CONFIG_MODULES), $(MODORDER)) FORCE
$(call if_changed,gen_compile_commands)
diff --git a/arch/alpha/kernel/Makefile b/arch/alpha/kernel/Makefile
index 5a74581bf0ee..5a5b0a8b7c6a 100644
--- a/arch/alpha/kernel/Makefile
+++ b/arch/alpha/kernel/Makefile
@@ -3,11 +3,11 @@
# Makefile for the linux kernel.
#
-extra-y := head.o vmlinux.lds
+extra-y := vmlinux.lds
asflags-y := $(KBUILD_CFLAGS)
ccflags-y := -Wno-sign-compare
-obj-y := entry.o traps.o process.o osf_sys.o irq.o \
+obj-y := head.o entry.o traps.o process.o osf_sys.o irq.o \
irq_alpha.o signal.o setup.o ptrace.o time.o \
systbls.o err_common.o io.o bugs.o
diff --git a/arch/arc/kernel/Makefile b/arch/arc/kernel/Makefile
index 8c4fc4b54c14..0723d888ac44 100644
--- a/arch/arc/kernel/Makefile
+++ b/arch/arc/kernel/Makefile
@@ -3,7 +3,7 @@
# Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
#
-obj-y := arcksyms.o setup.o irq.o reset.o ptrace.o process.o devtree.o
+obj-y := head.o arcksyms.o setup.o irq.o reset.o ptrace.o process.o devtree.o
obj-y += signal.o traps.o sys.o troubleshoot.o stacktrace.o disasm.o
obj-$(CONFIG_ISA_ARCOMPACT) += entry-compact.o intc-compact.o
obj-$(CONFIG_ISA_ARCV2) += entry-arcv2.o intc-arcv2.o
@@ -31,4 +31,4 @@ else
obj-y += ctx_sw_asm.o
endif
-extra-y := vmlinux.lds head.o
+extra-y := vmlinux.lds
diff --git a/arch/arm/kernel/Makefile b/arch/arm/kernel/Makefile
index 553866751e1a..8feaa3217ec5 100644
--- a/arch/arm/kernel/Makefile
+++ b/arch/arm/kernel/Makefile
@@ -89,7 +89,7 @@ obj-$(CONFIG_VDSO) += vdso.o
obj-$(CONFIG_EFI) += efi.o
obj-$(CONFIG_PARAVIRT) += paravirt.o
-head-y := head$(MMUEXT).o
+obj-y += head$(MMUEXT).o
obj-$(CONFIG_DEBUG_LL) += debug.o
obj-$(CONFIG_EARLY_PRINTK) += early_printk.o
obj-$(CONFIG_ARM_PATCH_PHYS_VIRT) += phys2virt.o
@@ -109,4 +109,4 @@ obj-$(CONFIG_HAVE_ARM_SMCCC) += smccc-call.o
obj-$(CONFIG_GENERIC_CPU_VULNERABILITIES) += spectre.o
-extra-y := $(head-y) vmlinux.lds
+extra-y := vmlinux.lds
diff --git a/arch/arm64/kernel/Makefile b/arch/arm64/kernel/Makefile
index 1add7b01efa7..b619ff207a57 100644
--- a/arch/arm64/kernel/Makefile
+++ b/arch/arm64/kernel/Makefile
@@ -85,8 +85,8 @@ $(obj)/vdso-wrap.o: $(obj)/vdso/vdso.so
$(obj)/vdso32-wrap.o: $(obj)/vdso32/vdso.so
obj-y += probes/
-head-y := head.o
-extra-y += $(head-y) vmlinux.lds
+obj-y += head.o
+extra-y += vmlinux.lds
ifeq ($(CONFIG_DEBUG_EFI),y)
AFLAGS_head.o += -DVMLINUX_PATH="\"$(realpath $(objtree)/vmlinux)\""
diff --git a/arch/csky/kernel/Makefile b/arch/csky/kernel/Makefile
index 6f14c924b20d..8a868316b912 100644
--- a/arch/csky/kernel/Makefile
+++ b/arch/csky/kernel/Makefile
@@ -1,7 +1,7 @@
# SPDX-License-Identifier: GPL-2.0-only
-extra-y := head.o vmlinux.lds
+extra-y := vmlinux.lds
-obj-y += entry.o atomic.o signal.o traps.o irq.o time.o vdso.o vdso/
+obj-y += head.o entry.o atomic.o signal.o traps.o irq.o time.o vdso.o vdso/
obj-y += power.o syscall.o syscall_table.o setup.o io.o
obj-y += process.o cpu-probe.o ptrace.o stacktrace.o
obj-y += probes/
diff --git a/arch/hexagon/kernel/Makefile b/arch/hexagon/kernel/Makefile
index fae3dce32fde..e73cb321630e 100644
--- a/arch/hexagon/kernel/Makefile
+++ b/arch/hexagon/kernel/Makefile
@@ -1,6 +1,7 @@
# SPDX-License-Identifier: GPL-2.0
-extra-y := head.o vmlinux.lds
+extra-y := vmlinux.lds
+obj-y += head.o
obj-$(CONFIG_SMP) += smp.o
obj-y += setup.o irq_cpu.o traps.o syscalltab.o signal.o time.o
diff --git a/arch/ia64/kernel/Makefile b/arch/ia64/kernel/Makefile
index 08d4a2ba0652..4a1fcb121dda 100644
--- a/arch/ia64/kernel/Makefile
+++ b/arch/ia64/kernel/Makefile
@@ -7,9 +7,9 @@ ifdef CONFIG_DYNAMIC_FTRACE
CFLAGS_REMOVE_ftrace.o = -pg
endif
-extra-y := head.o vmlinux.lds
+extra-y := vmlinux.lds
-obj-y := entry.o efi.o efi_stub.o gate-data.o fsys.o irq.o irq_ia64.o \
+obj-y := head.o entry.o efi.o efi_stub.o gate-data.o fsys.o irq.o irq_ia64.o \
irq_lsapic.o ivt.o pal.o patch.o process.o ptrace.o sal.o \
salinfo.o setup.o signal.o sys_ia64.o time.o traps.o unaligned.o \
unwind.o mca.o mca_asm.o topology.o dma-mapping.o iosapic.o acpi.o \
diff --git a/arch/loongarch/kernel/Makefile b/arch/loongarch/kernel/Makefile
index e5be17009fe8..6c33b5c45573 100644
--- a/arch/loongarch/kernel/Makefile
+++ b/arch/loongarch/kernel/Makefile
@@ -3,9 +3,9 @@
# Makefile for the Linux/LoongArch kernel.
#
-extra-y := head.o vmlinux.lds
+extra-y := vmlinux.lds
-obj-y += cpu-probe.o cacheinfo.o env.o setup.o entry.o genex.o \
+obj-y += head.o cpu-probe.o cacheinfo.o env.o setup.o entry.o genex.o \
traps.o irq.o idle.o process.o dma.o mem.o io.o reset.o switch.o \
elf.o syscall.o signal.o time.o topology.o inst.o ptrace.o vdso.o
diff --git a/arch/m68k/68000/Makefile b/arch/m68k/68000/Makefile
index 674541fdf5b8..279560add577 100644
--- a/arch/m68k/68000/Makefile
+++ b/arch/m68k/68000/Makefile
@@ -17,4 +17,4 @@ obj-$(CONFIG_DRAGEN2) += dragen2.o
obj-$(CONFIG_UCSIMM) += ucsimm.o
obj-$(CONFIG_UCDIMM) += ucsimm.o
-extra-y := head.o
+obj-y += head.o
diff --git a/arch/m68k/coldfire/Makefile b/arch/m68k/coldfire/Makefile
index 9419a6c1f036..c56bc0dc7f2e 100644
--- a/arch/m68k/coldfire/Makefile
+++ b/arch/m68k/coldfire/Makefile
@@ -45,4 +45,4 @@ obj-$(CONFIG_STMARK2) += stmark2.o
obj-$(CONFIG_PCI) += pci.o
obj-y += gpio.o
-extra-y := head.o
+obj-y += head.o
diff --git a/arch/m68k/kernel/Makefile b/arch/m68k/kernel/Makefile
index c0833da6a2ca..af015447dfb4 100644
--- a/arch/m68k/kernel/Makefile
+++ b/arch/m68k/kernel/Makefile
@@ -3,19 +3,20 @@
# Makefile for the linux kernel.
#
-extra-$(CONFIG_AMIGA) := head.o
-extra-$(CONFIG_ATARI) := head.o
-extra-$(CONFIG_MAC) := head.o
-extra-$(CONFIG_APOLLO) := head.o
-extra-$(CONFIG_VME) := head.o
-extra-$(CONFIG_HP300) := head.o
-extra-$(CONFIG_Q40) := head.o
-extra-$(CONFIG_SUN3X) := head.o
-extra-$(CONFIG_VIRT) := head.o
-extra-$(CONFIG_SUN3) := sun3-head.o
extra-y += vmlinux.lds
-obj-y := entry.o irq.o module.o process.o ptrace.o
+obj-$(CONFIG_AMIGA) := head.o
+obj-$(CONFIG_ATARI) := head.o
+obj-$(CONFIG_MAC) := head.o
+obj-$(CONFIG_APOLLO) := head.o
+obj-$(CONFIG_VME) := head.o
+obj-$(CONFIG_HP300) := head.o
+obj-$(CONFIG_Q40) := head.o
+obj-$(CONFIG_SUN3X) := head.o
+obj-$(CONFIG_VIRT) := head.o
+obj-$(CONFIG_SUN3) := sun3-head.o
+
+obj-y += entry.o irq.o module.o process.o ptrace.o
obj-y += setup.o signal.o sys_m68k.o syscalltable.o time.o traps.o
obj-$(CONFIG_MMU_MOTOROLA) += ints.o vectors.o
diff --git a/arch/microblaze/kernel/Makefile b/arch/microblaze/kernel/Makefile
index 15a20eb814ce..4393bee64eaf 100644
--- a/arch/microblaze/kernel/Makefile
+++ b/arch/microblaze/kernel/Makefile
@@ -12,9 +12,9 @@ CFLAGS_REMOVE_ftrace.o = -pg
CFLAGS_REMOVE_process.o = -pg
endif
-extra-y := head.o vmlinux.lds
+extra-y := vmlinux.lds
-obj-y += dma.o exceptions.o \
+obj-y += head.o dma.o exceptions.o \
hw_exception_handler.o irq.o \
process.o prom.o ptrace.o \
reset.o setup.o signal.o sys_microblaze.o timer.o traps.o unwind.o
diff --git a/arch/mips/kernel/Makefile b/arch/mips/kernel/Makefile
index 7c96282bff2e..5d1addac5e28 100644
--- a/arch/mips/kernel/Makefile
+++ b/arch/mips/kernel/Makefile
@@ -3,9 +3,9 @@
# Makefile for the Linux/MIPS kernel.
#
-extra-y := head.o vmlinux.lds
+extra-y := vmlinux.lds
-obj-y += branch.o cmpxchg.o elf.o entry.o genex.o idle.o irq.o \
+obj-y += head.o branch.o cmpxchg.o elf.o entry.o genex.o idle.o irq.o \
process.o prom.o ptrace.o reset.o setup.o signal.o \
syscall.o time.o topology.o traps.o unaligned.o watch.o \
vdso.o cacheinfo.o
diff --git a/arch/nios2/kernel/Makefile b/arch/nios2/kernel/Makefile
index 0b645e1e3158..78a913181fa1 100644
--- a/arch/nios2/kernel/Makefile
+++ b/arch/nios2/kernel/Makefile
@@ -3,9 +3,9 @@
# Makefile for the nios2 linux kernel.
#
-extra-y += head.o
extra-y += vmlinux.lds
+obj-y += head.o
obj-y += cpuinfo.o
obj-y += entry.o
obj-y += insnemu.o
diff --git a/arch/openrisc/kernel/Makefile b/arch/openrisc/kernel/Makefile
index 2d172e79f58d..79129161f3e0 100644
--- a/arch/openrisc/kernel/Makefile
+++ b/arch/openrisc/kernel/Makefile
@@ -3,9 +3,9 @@
# Makefile for the linux kernel.
#
-extra-y := head.o vmlinux.lds
+extra-y := vmlinux.lds
-obj-y := setup.o or32_ksyms.o process.o dma.o \
+obj-y := head.o setup.o or32_ksyms.o process.o dma.o \
traps.o time.o irq.o entry.o ptrace.o signal.o \
sys_call_table.o unwinder.o
diff --git a/arch/parisc/kernel/Makefile b/arch/parisc/kernel/Makefile
index d0bfac89a842..3d138c9cf9ce 100644
--- a/arch/parisc/kernel/Makefile
+++ b/arch/parisc/kernel/Makefile
@@ -3,9 +3,9 @@
# Makefile for arch/parisc/kernel
#
-extra-y := head.o vmlinux.lds
+extra-y := vmlinux.lds
-obj-y := cache.o pacache.o setup.o pdt.o traps.o time.o irq.o \
+obj-y := head.o cache.o pacache.o setup.o pdt.o traps.o time.o irq.o \
pa7300lc.o syscall.o entry.o sys_parisc.o firmware.o \
ptrace.o hardware.o inventory.o drivers.o alternative.o \
signal.o hpmc.o real2.o parisc_ksyms.o unaligned.o \
diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile
index 06d2d1f78f71..ad3decb9f20b 100644
--- a/arch/powerpc/kernel/Makefile
+++ b/arch/powerpc/kernel/Makefile
@@ -118,12 +118,12 @@ obj-$(CONFIG_PPC_FSL_BOOK3E) += cpu_setup_fsl_booke.o
obj-$(CONFIG_PPC_DOORBELL) += dbell.o
obj-$(CONFIG_JUMP_LABEL) += jump_label.o
-extra-$(CONFIG_PPC64) := head_64.o
-extra-$(CONFIG_PPC_BOOK3S_32) := head_book3s_32.o
-extra-$(CONFIG_40x) := head_40x.o
-extra-$(CONFIG_44x) := head_44x.o
-extra-$(CONFIG_FSL_BOOKE) := head_fsl_booke.o
-extra-$(CONFIG_PPC_8xx) := head_8xx.o
+obj-$(CONFIG_PPC64) += head_64.o
+obj-$(CONFIG_PPC_BOOK3S_32) += head_book3s_32.o
+obj-$(CONFIG_40x) += head_40x.o
+obj-$(CONFIG_44x) += head_44x.o
+obj-$(CONFIG_FSL_BOOKE) += head_fsl_booke.o
+obj-$(CONFIG_PPC_8xx) += head_8xx.o
extra-y += vmlinux.lds
obj-$(CONFIG_RELOCATABLE) += reloc_$(BITS).o
@@ -198,10 +198,10 @@ KCOV_INSTRUMENT_paca.o := n
CFLAGS_setup_64.o += -fno-stack-protector
CFLAGS_paca.o += -fno-stack-protector
-extra-$(CONFIG_PPC_FPU) += fpu.o
-extra-$(CONFIG_ALTIVEC) += vector.o
-extra-$(CONFIG_PPC64) += entry_64.o
-extra-$(CONFIG_PPC_OF_BOOT_TRAMPOLINE) += prom_init.o
+obj-$(CONFIG_PPC_FPU) += fpu.o
+obj-$(CONFIG_ALTIVEC) += vector.o
+obj-$(CONFIG_PPC64) += entry_64.o
+obj-$(CONFIG_PPC_OF_BOOT_TRAMPOLINE) += prom_init.o
extra-$(CONFIG_PPC_OF_BOOT_TRAMPOLINE) += prom_init_check
diff --git a/arch/riscv/kernel/Makefile b/arch/riscv/kernel/Makefile
index 33bb60a354cd..db6e4b1294ba 100644
--- a/arch/riscv/kernel/Makefile
+++ b/arch/riscv/kernel/Makefile
@@ -28,9 +28,9 @@ KASAN_SANITIZE_cpufeature.o := n
endif
endif
-extra-y += head.o
extra-y += vmlinux.lds
+obj-y += head.o
obj-y += soc.o
obj-$(CONFIG_RISCV_ALTERNATIVE) += alternative.o
obj-y += cpu.o
diff --git a/arch/s390/kernel/Makefile b/arch/s390/kernel/Makefile
index 3cbfa9fddd9a..7ce00816b8df 100644
--- a/arch/s390/kernel/Makefile
+++ b/arch/s390/kernel/Makefile
@@ -33,7 +33,7 @@ CFLAGS_stacktrace.o += -fno-optimize-sibling-calls
CFLAGS_dumpstack.o += -fno-optimize-sibling-calls
CFLAGS_unwind_bc.o += -fno-optimize-sibling-calls
-obj-y := traps.o time.o process.o earlypgm.o early.o setup.o idle.o vtime.o
+obj-y := head64.o traps.o time.o process.o earlypgm.o early.o setup.o idle.o vtime.o
obj-y += processor.o syscall.o ptrace.o signal.o cpcmd.o ebcdic.o nmi.o
obj-y += debug.o irq.o ipl.o dis.o diag.o vdso.o cpufeature.o
obj-y += sysinfo.o lgr.o os_info.o machine_kexec.o
@@ -42,7 +42,7 @@ obj-y += entry.o reipl.o relocate_kernel.o kdebugfs.o alternative.o
obj-y += nospec-branch.o ipl_vmparm.o machine_kexec_reloc.o unwind_bc.o
obj-y += smp.o text_amode31.o stacktrace.o
-extra-y += head64.o vmlinux.lds
+extra-y += vmlinux.lds
obj-$(CONFIG_SYSFS) += nospec-sysfs.o
CFLAGS_REMOVE_nospec-branch.o += $(CC_FLAGS_EXPOLINE)
diff --git a/arch/sh/kernel/Makefile b/arch/sh/kernel/Makefile
index aa0fbc9202b1..69cd9ac4b2ab 100644
--- a/arch/sh/kernel/Makefile
+++ b/arch/sh/kernel/Makefile
@@ -3,7 +3,7 @@
# Makefile for the Linux/SuperH kernel.
#
-extra-y := head_32.o vmlinux.lds
+extra-y := vmlinux.lds
ifdef CONFIG_FUNCTION_TRACER
# Do not profile debug and lowlevel utilities
@@ -12,7 +12,7 @@ endif
CFLAGS_REMOVE_return_address.o = -pg
-obj-y := debugtraps.o dumpstack.o \
+obj-y := head_32.o debugtraps.o dumpstack.o \
idle.o io.o irq.o irq_32.o kdebugfs.o \
machvec.o nmi_debug.o process.o \
process_32.o ptrace.o ptrace_32.o \
diff --git a/arch/sparc/kernel/Makefile b/arch/sparc/kernel/Makefile
index d3a0e072ebe8..b328e4a0bd57 100644
--- a/arch/sparc/kernel/Makefile
+++ b/arch/sparc/kernel/Makefile
@@ -7,8 +7,6 @@
asflags-y := -ansi
ccflags-y := -Werror
-extra-y := head_$(BITS).o
-
# Undefine sparc when processing vmlinux.lds - it is used
# And teach CPP we are doing $(BITS) builds (for this case)
CPPFLAGS_vmlinux.lds := -Usparc -m$(BITS)
@@ -22,6 +20,7 @@ CFLAGS_REMOVE_perf_event.o := -pg
CFLAGS_REMOVE_pcr.o := -pg
endif
+obj-y := head_$(BITS).o
obj-$(CONFIG_SPARC64) += urtt_fill.o
obj-$(CONFIG_SPARC32) += entry.o wof.o wuf.o
obj-$(CONFIG_SPARC32) += etrap_32.o
diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile
index a20a5ebfacd7..956e50ca06e0 100644
--- a/arch/x86/kernel/Makefile
+++ b/arch/x86/kernel/Makefile
@@ -3,10 +3,6 @@
# Makefile for the linux kernel.
#
-extra-y := head_$(BITS).o
-extra-y += head$(BITS).o
-extra-y += ebda.o
-extra-y += platform-quirks.o
extra-y += vmlinux.lds
CPPFLAGS_vmlinux.lds += -U$(UTS_MACHINE)
@@ -42,7 +38,11 @@ KCOV_INSTRUMENT := n
CFLAGS_irq.o := -I $(srctree)/$(src)/../include/asm/trace
-obj-y := process_$(BITS).o signal.o
+obj-y += head_$(BITS).o
+obj-y += head$(BITS).o
+obj-y += ebda.o
+obj-y += platform-quirks.o
+obj-y += process_$(BITS).o signal.o
obj-$(CONFIG_COMPAT) += signal_compat.o
obj-y += traps.o idt.o irq.o irq_$(BITS).o dumpstack_$(BITS).o
obj-y += time.o ioport.o dumpstack.o nmi.o
diff --git a/arch/xtensa/kernel/Makefile b/arch/xtensa/kernel/Makefile
index 897c1c741058..f28b8e3d717e 100644
--- a/arch/xtensa/kernel/Makefile
+++ b/arch/xtensa/kernel/Makefile
@@ -3,9 +3,9 @@
# Makefile for the Linux/Xtensa kernel.
#
-extra-y := head.o vmlinux.lds
+extra-y := vmlinux.lds
-obj-y := align.o coprocessor.o entry.o irq.o platform.o process.o \
+obj-y := head.o align.o coprocessor.o entry.o irq.o platform.o process.o \
ptrace.o setup.o signal.o stacktrace.o syscall.o time.o traps.o \
vectors.o
diff --git a/scripts/Makefile.modpost b/scripts/Makefile.modpost
index 2daf760eeb25..ceb1d78140e7 100644
--- a/scripts/Makefile.modpost
+++ b/scripts/Makefile.modpost
@@ -70,13 +70,12 @@ quiet_cmd_vmlinux_objs = GEN $@
for f in $(real-prereqs); do \
case $${f} in \
*libgcc.a) ;; \
- *.a) $(AR) t $${f} ;; \
- *) echo $${f} ;; \
+ *) $(AR) t $${f} ;; \
esac \
done > $@
targets += .vmlinux.objs
-.vmlinux.objs: $(KBUILD_VMLINUX_OBJS) $(KBUILD_VMLINUX_LIBS) FORCE
+.vmlinux.objs: vmlinux.a $(KBUILD_VMLINUX_LIBS) FORCE
$(call if_changed,vmlinux_objs)
vmlinux.o-if-present := $(wildcard vmlinux.o)
diff --git a/scripts/Makefile.vmlinux_o b/scripts/Makefile.vmlinux_o
index 84019814f33f..81a4e0484457 100644
--- a/scripts/Makefile.vmlinux_o
+++ b/scripts/Makefile.vmlinux_o
@@ -18,7 +18,7 @@ quiet_cmd_gen_initcalls_lds = GEN $@
$(PERL) $(real-prereqs) > $@
.tmp_initcalls.lds: $(srctree)/scripts/generate_initcall_order.pl \
- $(KBUILD_VMLINUX_OBJS) $(KBUILD_VMLINUX_LIBS) FORCE
+ vmlinux.a $(KBUILD_VMLINUX_LIBS) FORCE
$(call if_changed,gen_initcalls_lds)
targets := .tmp_initcalls.lds
@@ -55,7 +55,7 @@ quiet_cmd_ld_vmlinux.o = LD $@
cmd_ld_vmlinux.o = \
$(LD) ${KBUILD_LDFLAGS} -r -o $@ \
$(addprefix -T , $(initcalls-lds)) \
- --whole-archive $(KBUILD_VMLINUX_OBJS) --no-whole-archive \
+ --whole-archive vmlinux.a --no-whole-archive \
--start-group $(KBUILD_VMLINUX_LIBS) --end-group \
$(cmd_objtool)
@@ -64,7 +64,7 @@ define rule_ld_vmlinux.o
$(call cmd,gen_objtooldep)
endef
-vmlinux.o: $(initcalls-lds) $(KBUILD_VMLINUX_OBJS) $(KBUILD_VMLINUX_LIBS) FORCE
+vmlinux.o: $(initcalls-lds) vmlinux.a $(KBUILD_VMLINUX_LIBS) FORCE
$(call if_changed_rule,ld_vmlinux.o)
targets += vmlinux.o
diff --git a/scripts/clang-tools/gen_compile_commands.py b/scripts/clang-tools/gen_compile_commands.py
index 47da25b3ba7d..d800b2c0af97 100755
--- a/scripts/clang-tools/gen_compile_commands.py
+++ b/scripts/clang-tools/gen_compile_commands.py
@@ -109,20 +109,6 @@ def to_cmdfile(path):
return os.path.join(dir, '.' + base + '.cmd')
-def cmdfiles_for_o(obj):
- """Generate the iterator of .cmd files associated with the object
-
- Yield the .cmd file used to build the given object
-
- Args:
- obj: The object path
-
- Yields:
- The path to .cmd file
- """
- yield to_cmdfile(obj)
-
-
def cmdfiles_for_a(archive, ar):
"""Generate the iterator of .cmd files associated with the archive.
@@ -211,13 +197,10 @@ def main():
for path in paths:
# If 'path' is a directory, handle all .cmd files under it.
# Otherwise, handle .cmd files associated with the file.
- # Most of built-in objects are linked via archives (built-in.a or lib.a)
- # but some objects are linked to vmlinux directly.
+ # built-in objects are linked via vmlinux.a
# Modules are listed in modules.order.
if os.path.isdir(path):
cmdfiles = cmdfiles_in_dir(path)
- elif path.endswith('.o'):
- cmdfiles = cmdfiles_for_o(path)
elif path.endswith('.a'):
cmdfiles = cmdfiles_for_a(path, ar)
elif path.endswith('modules.order'):
diff --git a/scripts/link-vmlinux.sh b/scripts/link-vmlinux.sh
index 6a197d8a88ac..23ac13fd9d89 100755
--- a/scripts/link-vmlinux.sh
+++ b/scripts/link-vmlinux.sh
@@ -3,17 +3,15 @@
#
# link vmlinux
#
-# vmlinux is linked from the objects selected by $(KBUILD_VMLINUX_OBJS) and
-# $(KBUILD_VMLINUX_LIBS). Most are built-in.a files from top-level directories
-# in the kernel tree, others are specified in arch/$(ARCH)/Makefile.
+# vmlinux is linked from the objects in vmlinux.a and $(KBUILD_VMLINUX_LIBS).
+# vmlinux.a contains objects that are linked unconditionally.
# $(KBUILD_VMLINUX_LIBS) are archives which are linked conditionally
# (not within --whole-archive), and do not require symbol indexes added.
#
# vmlinux
# ^
# |
-# +--< $(KBUILD_VMLINUX_OBJS)
-# | +--< init/built-in.a drivers/built-in.a mm/built-in.a + more
+# +--< vmlinux.a
# |
# +--< $(KBUILD_VMLINUX_LIBS)
# | +--< lib/lib.a + more
@@ -67,7 +65,7 @@ vmlinux_link()
objs=vmlinux.o
libs=
else
- objs="${KBUILD_VMLINUX_OBJS}"
+ objs=vmlinux.a
libs="${KBUILD_VMLINUX_LIBS}"
fi
--
2.34.1
^ permalink raw reply related [flat|nested] 30+ messages in thread
* [PATCH v3 7/7] kbuild: remove head-y syntax
2022-09-24 18:19 [PATCH v3 0/7] kbuild: various cleanups Masahiro Yamada
` (5 preceding siblings ...)
2022-09-24 18:19 ` [PATCH v3 6/7] kbuild: use obj-y instead extra-y for objects placed at the head Masahiro Yamada
@ 2022-09-24 18:19 ` Masahiro Yamada
2022-09-29 15:21 ` Nicolas Schier
2022-10-18 8:16 ` Jiri Slaby
2022-09-26 21:39 ` [PATCH v3 0/7] kbuild: various cleanups Nick Desaulniers
7 siblings, 2 replies; 30+ messages in thread
From: Masahiro Yamada @ 2022-09-24 18:19 UTC (permalink / raw)
To: linux-kbuild
Cc: linux-kernel, linux-arch, Nick Desaulniers, Nathan Chancellor,
Masahiro Yamada
Kbuild puts the objects listed in head-y at the head of vmlinux.
Conventionally, we do this for head*.S, which contains the kernel entry
point.
A counter approach is to control the section order by the linker script.
Actually, the code marked as __HEAD goes into the ".head.text" section,
which is placed before the normal ".text" section.
I do not know if both of them are needed. From the build system
perspective, head-y is not mandatory. If you can achieve the proper code
placement by the linker script only, it would be cleaner.
I collected the current head-y objects into head-object-list.txt. It is
a whitelist. My hope is it will be reduced in the long run.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
---
(no changes since v1)
Documentation/kbuild/makefiles.rst | 9 ++---
Makefile | 4 +--
arch/alpha/Makefile | 2 --
arch/arc/Makefile | 2 --
arch/arm/Makefile | 3 --
arch/arm64/Makefile | 3 --
arch/csky/Makefile | 2 --
arch/hexagon/Makefile | 2 --
arch/ia64/Makefile | 1 -
arch/loongarch/Makefile | 2 --
arch/m68k/Makefile | 9 -----
arch/microblaze/Makefile | 1 -
arch/mips/Makefile | 2 --
arch/nios2/Makefile | 1 -
arch/openrisc/Makefile | 2 --
arch/parisc/Makefile | 2 --
arch/powerpc/Makefile | 12 -------
arch/riscv/Makefile | 2 --
arch/s390/Makefile | 2 --
arch/sh/Makefile | 2 --
arch/sparc/Makefile | 2 --
arch/x86/Makefile | 5 ---
arch/xtensa/Makefile | 2 --
scripts/head-object-list.txt | 53 ++++++++++++++++++++++++++++++
24 files changed, 60 insertions(+), 67 deletions(-)
create mode 100644 scripts/head-object-list.txt
diff --git a/Documentation/kbuild/makefiles.rst b/Documentation/kbuild/makefiles.rst
index 5a6a8426cc97..60134ddf3db1 100644
--- a/Documentation/kbuild/makefiles.rst
+++ b/Documentation/kbuild/makefiles.rst
@@ -1070,8 +1070,7 @@ When kbuild executes, the following steps are followed (roughly):
- The values of the above variables are expanded in arch/$(SRCARCH)/Makefile.
5) All object files are then linked and the resulting file vmlinux is
located at the root of the obj tree.
- The very first objects linked are listed in head-y, assigned by
- arch/$(SRCARCH)/Makefile.
+ The very first objects linked are listed in scripts/head-object-list.txt.
6) Finally, the architecture-specific part does any required post processing
and builds the final bootimage.
- This includes building boot records
@@ -1219,6 +1218,9 @@ When kbuild executes, the following steps are followed (roughly):
All object files for vmlinux. They are linked to vmlinux in the same
order as listed in KBUILD_VMLINUX_OBJS.
+ The objects listed in scripts/head-object-list.txt are exceptions;
+ they are placed before the other objects.
+
KBUILD_VMLINUX_LIBS
All .a "lib" files for vmlinux. KBUILD_VMLINUX_OBJS and
@@ -1262,8 +1264,7 @@ When kbuild executes, the following steps are followed (roughly):
machinery is all architecture-independent.
- head-y, core-y, libs-y, drivers-y
- $(head-y) lists objects to be linked first in vmlinux.
+ core-y, libs-y, drivers-y
$(libs-y) lists directories where a lib.a archive can be located.
diff --git a/Makefile b/Makefile
index a8c19f92ac9e..ab986e4c5189 100644
--- a/Makefile
+++ b/Makefile
@@ -1149,10 +1149,10 @@ quiet_cmd_ar_vmlinux.a = AR $@
cmd_ar_vmlinux.a = \
rm -f $@; \
$(AR) cDPrST $@ $(KBUILD_VMLINUX_OBJS); \
- $(AR) mPiT $$($(AR) t $@ | head -n1) $@ $(head-y)
+ $(AR) mPiT $$($(AR) t $@ | head -n1) $@ $$($(AR) t $@ | grep -F --file=$(srctree)/scripts/head-object-list.txt)
targets += vmlinux.a
-vmlinux.a: $(KBUILD_VMLINUX_OBJS) FORCE
+vmlinux.a: $(KBUILD_VMLINUX_OBJS) scripts/head-object-list.txt FORCE
$(call if_changed,ar_vmlinux.a)
vmlinux.o: autoksyms_recursive vmlinux.a $(KBUILD_VMLINUX_LIBS) FORCE
diff --git a/arch/alpha/Makefile b/arch/alpha/Makefile
index 881cb913e23a..45158024085e 100644
--- a/arch/alpha/Makefile
+++ b/arch/alpha/Makefile
@@ -36,8 +36,6 @@ cflags-y += $(cpuflags-y)
# BWX is most important, but we don't really want any emulation ever.
KBUILD_CFLAGS += $(cflags-y) -Wa,-mev6
-head-y := arch/alpha/kernel/head.o
-
libs-y += arch/alpha/lib/
# export what is needed by arch/alpha/boot/Makefile
diff --git a/arch/arc/Makefile b/arch/arc/Makefile
index efc54f3e35e0..329400a1c355 100644
--- a/arch/arc/Makefile
+++ b/arch/arc/Makefile
@@ -82,8 +82,6 @@ KBUILD_CFLAGS += $(cflags-y)
KBUILD_AFLAGS += $(KBUILD_CFLAGS)
KBUILD_LDFLAGS += $(ldflags-y)
-head-y := arch/arc/kernel/head.o
-
# w/o this dtb won't embed into kernel binary
core-y += arch/arc/boot/dts/
diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index 56f655deebb1..29d15c9a433e 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -134,9 +134,6 @@ KBUILD_AFLAGS +=$(CFLAGS_ABI) $(AFLAGS_ISA) $(arch-y) $(tune-y) -include asm/uni
CHECKFLAGS += -D__arm__
-#Default value
-head-y := arch/arm/kernel/head$(MMUEXT).o
-
# Text offset. This list is sorted numerically by address in order to
# provide a means to avoid/resolve conflicts in multi-arch kernels.
# Note: the 32kB below this value is reserved for use by the kernel
diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile
index 6d9d4a58b898..6e03f15bb041 100644
--- a/arch/arm64/Makefile
+++ b/arch/arm64/Makefile
@@ -133,9 +133,6 @@ ifeq ($(CONFIG_DYNAMIC_FTRACE_WITH_REGS),y)
CC_FLAGS_FTRACE := -fpatchable-function-entry=2
endif
-# Default value
-head-y := arch/arm64/kernel/head.o
-
ifeq ($(CONFIG_KASAN_SW_TAGS), y)
KASAN_SHADOW_SCALE_SHIFT := 4
else ifeq ($(CONFIG_KASAN_GENERIC), y)
diff --git a/arch/csky/Makefile b/arch/csky/Makefile
index 4e1d619fd5c6..0e4237e55758 100644
--- a/arch/csky/Makefile
+++ b/arch/csky/Makefile
@@ -59,8 +59,6 @@ LDFLAGS += -EL
KBUILD_AFLAGS += $(KBUILD_CFLAGS)
-head-y := arch/csky/kernel/head.o
-
core-y += arch/csky/$(CSKYABI)/
libs-y += arch/csky/lib/ \
diff --git a/arch/hexagon/Makefile b/arch/hexagon/Makefile
index 44312bc147d8..92d005958dfb 100644
--- a/arch/hexagon/Makefile
+++ b/arch/hexagon/Makefile
@@ -32,5 +32,3 @@ KBUILD_LDFLAGS += $(ldflags-y)
TIR_NAME := r19
KBUILD_CFLAGS += -ffixed-$(TIR_NAME) -DTHREADINFO_REG=$(TIR_NAME) -D__linux__
KBUILD_AFLAGS += -DTHREADINFO_REG=$(TIR_NAME)
-
-head-y := arch/hexagon/kernel/head.o
diff --git a/arch/ia64/Makefile b/arch/ia64/Makefile
index e55c2f138656..56c4bb276b6e 100644
--- a/arch/ia64/Makefile
+++ b/arch/ia64/Makefile
@@ -44,7 +44,6 @@ quiet_cmd_objcopy = OBJCOPY $@
cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
KBUILD_CFLAGS += $(cflags-y)
-head-y := arch/ia64/kernel/head.o
libs-y += arch/ia64/lib/
diff --git a/arch/loongarch/Makefile b/arch/loongarch/Makefile
index ec3de6191276..131fc210c2bf 100644
--- a/arch/loongarch/Makefile
+++ b/arch/loongarch/Makefile
@@ -72,8 +72,6 @@ CHECKFLAGS += $(shell $(CC) $(KBUILD_CFLAGS) -dM -E -x c /dev/null | \
sed -e "s/^\#define /-D'/" -e "s/ /'='/" -e "s/$$/'/" -e 's/\$$/&&/g')
endif
-head-y := arch/loongarch/kernel/head.o
-
libs-y += arch/loongarch/lib/
ifeq ($(KBUILD_EXTMOD),)
diff --git a/arch/m68k/Makefile b/arch/m68k/Makefile
index e358605b70ba..43e39040d3ac 100644
--- a/arch/m68k/Makefile
+++ b/arch/m68k/Makefile
@@ -86,15 +86,6 @@ ifdef CONFIG_KGDB
KBUILD_CFLAGS := $(subst -fomit-frame-pointer,,$(KBUILD_CFLAGS)) -g
endif
-#
-# Select the assembler head startup code. Order is important. The default
-# head code is first, processor specific selections can override it after.
-#
-head-y := arch/m68k/kernel/head.o
-head-$(CONFIG_SUN3) := arch/m68k/kernel/sun3-head.o
-head-$(CONFIG_M68000) := arch/m68k/68000/head.o
-head-$(CONFIG_COLDFIRE) := arch/m68k/coldfire/head.o
-
libs-y += arch/m68k/lib/
diff --git a/arch/microblaze/Makefile b/arch/microblaze/Makefile
index 1826d9ce4459..3f8a86c4336a 100644
--- a/arch/microblaze/Makefile
+++ b/arch/microblaze/Makefile
@@ -48,7 +48,6 @@ CPUFLAGS-1 += $(call cc-option,-mcpu=v$(CPU_VER))
# r31 holds current when in kernel mode
KBUILD_CFLAGS += -ffixed-r31 $(CPUFLAGS-y) $(CPUFLAGS-1) $(CPUFLAGS-2)
-head-y := arch/microblaze/kernel/head.o
libs-y += arch/microblaze/lib/
boot := arch/microblaze/boot
diff --git a/arch/mips/Makefile b/arch/mips/Makefile
index 4d2a3e73fc45..b296e33f8e33 100644
--- a/arch/mips/Makefile
+++ b/arch/mips/Makefile
@@ -324,8 +324,6 @@ endif
OBJCOPYFLAGS += --remove-section=.reginfo
-head-y := arch/mips/kernel/head.o
-
libs-y += arch/mips/lib/
libs-$(CONFIG_MIPS_FP_SUPPORT) += arch/mips/math-emu/
diff --git a/arch/nios2/Makefile b/arch/nios2/Makefile
index 3f34e6831863..f1ff4ce0f1a2 100644
--- a/arch/nios2/Makefile
+++ b/arch/nios2/Makefile
@@ -37,7 +37,6 @@ KBUILD_CFLAGS += -DUTS_SYSNAME=\"$(UTS_SYSNAME)\"
KBUILD_CFLAGS += -fno-builtin
KBUILD_CFLAGS += -G 0
-head-y := arch/nios2/kernel/head.o
libs-y += arch/nios2/lib/ $(LIBGCC)
INSTALL_PATH ?= /tftpboot
diff --git a/arch/openrisc/Makefile b/arch/openrisc/Makefile
index b446510173cd..68249521db5a 100644
--- a/arch/openrisc/Makefile
+++ b/arch/openrisc/Makefile
@@ -55,8 +55,6 @@ ifeq ($(CONFIG_OPENRISC_HAVE_INST_SEXT),y)
KBUILD_CFLAGS += $(call cc-option,-msext)
endif
-head-y := arch/openrisc/kernel/head.o
-
libs-y += $(LIBGCC)
PHONY += vmlinux.bin
diff --git a/arch/parisc/Makefile b/arch/parisc/Makefile
index e38d993d87f2..a2d8600521f9 100644
--- a/arch/parisc/Makefile
+++ b/arch/parisc/Makefile
@@ -113,8 +113,6 @@ cflags-$(CONFIG_PA7100LC) += -march=1.1 -mschedule=7100LC
cflags-$(CONFIG_PA7300LC) += -march=1.1 -mschedule=7300
cflags-$(CONFIG_PA8X00) += -march=2.0 -mschedule=8000
-head-y := arch/parisc/kernel/head.o
-
KBUILD_CFLAGS += $(cflags-y)
LIBGCC := $(shell $(CC) -print-libgcc-file-name)
export LIBGCC
diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile
index 02742facf895..89c27827a11f 100644
--- a/arch/powerpc/Makefile
+++ b/arch/powerpc/Makefile
@@ -226,18 +226,6 @@ KBUILD_CFLAGS += $(cpu-as-y)
KBUILD_AFLAGS += $(aflags-y)
KBUILD_CFLAGS += $(cflags-y)
-head-$(CONFIG_PPC64) := arch/powerpc/kernel/head_64.o
-head-$(CONFIG_PPC_BOOK3S_32) := arch/powerpc/kernel/head_book3s_32.o
-head-$(CONFIG_PPC_8xx) := arch/powerpc/kernel/head_8xx.o
-head-$(CONFIG_40x) := arch/powerpc/kernel/head_40x.o
-head-$(CONFIG_44x) := arch/powerpc/kernel/head_44x.o
-head-$(CONFIG_FSL_BOOKE) := arch/powerpc/kernel/head_fsl_booke.o
-
-head-$(CONFIG_PPC64) += arch/powerpc/kernel/entry_64.o
-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
-
# Default to zImage, override when needed
all: zImage
diff --git a/arch/riscv/Makefile b/arch/riscv/Makefile
index 3fa8ef336822..e013df8e7b8b 100644
--- a/arch/riscv/Makefile
+++ b/arch/riscv/Makefile
@@ -110,8 +110,6 @@ else
KBUILD_IMAGE := $(boot)/Image.gz
endif
-head-y := arch/riscv/kernel/head.o
-
libs-y += arch/riscv/lib/
libs-$(CONFIG_EFI_STUB) += $(objtree)/drivers/firmware/efi/libstub/lib.a
diff --git a/arch/s390/Makefile b/arch/s390/Makefile
index 4cb5d17e7ead..de6d8b2ea4d8 100644
--- a/arch/s390/Makefile
+++ b/arch/s390/Makefile
@@ -119,8 +119,6 @@ export KBUILD_CFLAGS_DECOMPRESSOR
OBJCOPYFLAGS := -O binary
-head-y := arch/s390/kernel/head64.o
-
libs-y += arch/s390/lib/
drivers-y += drivers/s390/
diff --git a/arch/sh/Makefile b/arch/sh/Makefile
index b39412bf91fb..5c8776482530 100644
--- a/arch/sh/Makefile
+++ b/arch/sh/Makefile
@@ -114,8 +114,6 @@ endif
export ld-bfd
-head-y := arch/sh/kernel/head_32.o
-
# Mach groups
machdir-$(CONFIG_SOLUTION_ENGINE) += mach-se
machdir-$(CONFIG_SH_HP6XX) += mach-hp6xx
diff --git a/arch/sparc/Makefile b/arch/sparc/Makefile
index fe58a410b4ce..a4ea5b05f288 100644
--- a/arch/sparc/Makefile
+++ b/arch/sparc/Makefile
@@ -56,8 +56,6 @@ endif
endif
-head-y := arch/sparc/kernel/head_$(BITS).o
-
libs-y += arch/sparc/prom/
libs-y += arch/sparc/lib/
diff --git a/arch/x86/Makefile b/arch/x86/Makefile
index bafbd905e6e7..9afd323c6916 100644
--- a/arch/x86/Makefile
+++ b/arch/x86/Makefile
@@ -234,11 +234,6 @@ archheaders:
###
# Kernel objects
-head-y := arch/x86/kernel/head_$(BITS).o
-head-y += arch/x86/kernel/head$(BITS).o
-head-y += arch/x86/kernel/ebda.o
-head-y += arch/x86/kernel/platform-quirks.o
-
libs-y += arch/x86/lib/
# drivers-y are linked after core-y
diff --git a/arch/xtensa/Makefile b/arch/xtensa/Makefile
index 5097caa7bf0c..bfd8e433ed62 100644
--- a/arch/xtensa/Makefile
+++ b/arch/xtensa/Makefile
@@ -55,8 +55,6 @@ KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(vardirs) $(plfdirs))
KBUILD_DEFCONFIG := iss_defconfig
-head-y := arch/xtensa/kernel/head.o
-
libs-y += arch/xtensa/lib/
boot := arch/xtensa/boot
diff --git a/scripts/head-object-list.txt b/scripts/head-object-list.txt
new file mode 100644
index 000000000000..dd2ba2eda636
--- /dev/null
+++ b/scripts/head-object-list.txt
@@ -0,0 +1,53 @@
+# Head objects
+#
+# The objects listed here are placed at the head of vmlinux. A typical use-case
+# is an object that contains the entry point. This is kept for compatibility
+# with head-y, which Kbuild used to support.
+#
+# A counter approach is to control the section placement by the linker script.
+# The code marked as __HEAD goes into the ".head.text" section, which is placed
+# before the normal ".text" section.
+#
+# If you can achieve the correct code ordering by linker script, please delete
+# the entry from this file.
+#
+arch/alpha/kernel/head.o
+arch/arc/kernel/head.o
+arch/arm/kernel/head-nommu.o
+arch/arm/kernel/head.o
+arch/arm64/kernel/head.o
+arch/csky/kernel/head.o
+arch/hexagon/kernel/head.o
+arch/ia64/kernel/head.o
+arch/loongarch/kernel/head.o
+arch/m68k/68000/head.o
+arch/m68k/coldfire/head.o
+arch/m68k/kernel/head.o
+arch/m68k/kernel/sun3-head.o
+arch/microblaze/kernel/head.o
+arch/mips/kernel/head.o
+arch/nios2/kernel/head.o
+arch/openrisc/kernel/head.o
+arch/parisc/kernel/head.o
+arch/powerpc/kernel/head_40x.o
+arch/powerpc/kernel/head_44x.o
+arch/powerpc/kernel/head_64.o
+arch/powerpc/kernel/head_8xx.o
+arch/powerpc/kernel/head_book3s_32.o
+arch/powerpc/kernel/head_fsl_booke.o
+arch/powerpc/kernel/entry_64.o
+arch/powerpc/kernel/fpu.o
+arch/powerpc/kernel/vector.o
+arch/powerpc/kernel/prom_init.o
+arch/riscv/kernel/head.o
+arch/s390/kernel/head64.o
+arch/sh/kernel/head_32.o
+arch/sparc/kernel/head_32.o
+arch/sparc/kernel/head_64.o
+arch/x86/kernel/head_32.o
+arch/x86/kernel/head_64.o
+arch/x86/kernel/head32.o
+arch/x86/kernel/head64.o
+arch/x86/kernel/ebda.o
+arch/x86/kernel/platform-quirks.o
+arch/xtensa/kernel/head.o
--
2.34.1
^ permalink raw reply related [flat|nested] 30+ messages in thread
* Re: [PATCH v3 2/7] kbuild: list sub-directories in ./Kbuild
2022-09-24 18:19 ` [PATCH v3 2/7] kbuild: list sub-directories in ./Kbuild Masahiro Yamada
@ 2022-09-24 19:37 ` kernel test robot
2022-09-24 20:27 ` kernel test robot
2022-09-28 19:30 ` Nicolas Schier
2 siblings, 0 replies; 30+ messages in thread
From: kernel test robot @ 2022-09-24 19:37 UTC (permalink / raw)
To: Masahiro Yamada, linux-kbuild
Cc: kbuild-all, linux-kernel, linux-arch, Nick Desaulniers,
Nathan Chancellor, Masahiro Yamada
[-- Attachment #1: Type: text/plain, Size: 2397 bytes --]
Hi Masahiro,
I love your patch! Perhaps something to improve:
[auto build test WARNING on masahiroy-kbuild/for-next]
[cannot apply to arm64/for-next/core gerg-m68knommu/for-next geert-m68k/for-next deller-parisc/for-next powerpc/next s390/features tip/x86/core linus/master v6.0-rc6 next-20220923]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Masahiro-Yamada/kbuild-various-cleanups/20220925-022150
base: https://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild.git for-next
config: um-i386_defconfig
compiler: gcc-11 (Debian 11.3.0-5) 11.3.0
reproduce (this is a W=1 build):
# https://github.com/intel-lab-lkp/linux/commit/d721cc5614aaa17b2965db04e9319d4ef5f7eaf7
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Masahiro-Yamada/kbuild-various-cleanups/20220925-022150
git checkout d721cc5614aaa17b2965db04e9319d4ef5f7eaf7
# save the config file
mkdir build_dir && cp config build_dir/.config
make W=1 O=build_dir ARCH=um SUBARCH=i386 SHELL=/bin/bash
If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
>> /usr/bin/ld: warning: ./arch/x86/um/checksum_32.o: missing .note.GNU-stack section implies executable stack
/usr/bin/ld: NOTE: This behaviour is deprecated and will be removed in a future version of the linker
/usr/bin/ld: warning: .tmp_vmlinux.kallsyms1 has a LOAD segment with RWX permissions
/usr/bin/ld: warning: .tmp_vmlinux.kallsyms1.o: missing .note.GNU-stack section implies executable stack
/usr/bin/ld: NOTE: This behaviour is deprecated and will be removed in a future version of the linker
/usr/bin/ld: warning: .tmp_vmlinux.kallsyms2 has a LOAD segment with RWX permissions
/usr/bin/ld: warning: .tmp_vmlinux.kallsyms2.o: missing .note.GNU-stack section implies executable stack
/usr/bin/ld: NOTE: This behaviour is deprecated and will be removed in a future version of the linker
/usr/bin/ld: warning: vmlinux has a LOAD segment with RWX permissions
--
0-DAY CI Kernel Test Service
https://01.org/lkp
[-- Attachment #2: config --]
[-- Type: text/plain, Size: 41263 bytes --]
#
# Automatically generated file; DO NOT EDIT.
# Linux/um 6.0.0-rc5 Kernel Configuration
#
CONFIG_CC_VERSION_TEXT="gcc-11 (Debian 11.3.0-5) 11.3.0"
CONFIG_CC_IS_GCC=y
CONFIG_GCC_VERSION=110300
CONFIG_CLANG_VERSION=0
CONFIG_AS_IS_GNU=y
CONFIG_AS_VERSION=23890
CONFIG_LD_IS_BFD=y
CONFIG_LD_VERSION=23890
CONFIG_LLD_VERSION=0
CONFIG_CC_CAN_LINK=y
CONFIG_CC_CAN_LINK_STATIC=y
CONFIG_CC_HAS_ASM_GOTO_OUTPUT=y
CONFIG_CC_HAS_ASM_INLINE=y
CONFIG_CC_HAS_NO_PROFILE_FN_ATTR=y
CONFIG_PAHOLE_VERSION=123
CONFIG_IRQ_WORK=y
#
# General setup
#
CONFIG_BROKEN_ON_SMP=y
CONFIG_INIT_ENV_ARG_LIMIT=128
# CONFIG_WERROR is not set
CONFIG_LOCALVERSION=""
CONFIG_LOCALVERSION_AUTO=y
CONFIG_BUILD_SALT=""
CONFIG_DEFAULT_INIT=""
CONFIG_DEFAULT_HOSTNAME="(none)"
CONFIG_SYSVIPC=y
CONFIG_SYSVIPC_SYSCTL=y
CONFIG_POSIX_MQUEUE=y
CONFIG_POSIX_MQUEUE_SYSCTL=y
# CONFIG_WATCH_QUEUE is not set
CONFIG_CROSS_MEMORY_ATTACH=y
# CONFIG_USELIB is not set
# CONFIG_AUDIT is not set
CONFIG_HAVE_ARCH_AUDITSYSCALL=y
#
# IRQ subsystem
#
CONFIG_GENERIC_IRQ_SHOW=y
# end of IRQ subsystem
CONFIG_GENERIC_CLOCKEVENTS=y
#
# Timers subsystem
#
CONFIG_TICK_ONESHOT=y
CONFIG_NO_HZ_COMMON=y
# CONFIG_HZ_PERIODIC is not set
CONFIG_NO_HZ_IDLE=y
CONFIG_NO_HZ=y
CONFIG_HIGH_RES_TIMERS=y
# end of Timers subsystem
CONFIG_BPF=y
#
# BPF subsystem
#
# CONFIG_BPF_SYSCALL is not set
# end of BPF subsystem
CONFIG_PREEMPT_NONE_BUILD=y
CONFIG_PREEMPT_NONE=y
#
# CPU/Task time and stats accounting
#
CONFIG_TICK_CPU_ACCOUNTING=y
CONFIG_BSD_PROCESS_ACCT=y
# CONFIG_BSD_PROCESS_ACCT_V3 is not set
# CONFIG_TASKSTATS is not set
# CONFIG_PSI is not set
# end of CPU/Task time and stats accounting
#
# RCU Subsystem
#
CONFIG_TINY_RCU=y
# CONFIG_RCU_EXPERT is not set
CONFIG_SRCU=y
CONFIG_TINY_SRCU=y
# end of RCU Subsystem
CONFIG_IKCONFIG=y
CONFIG_IKCONFIG_PROC=y
# CONFIG_IKHEADERS is not set
CONFIG_LOG_BUF_SHIFT=14
CONFIG_PRINTK_SAFE_LOG_BUF_SHIFT=13
#
# Scheduler features
#
# end of Scheduler features
CONFIG_CC_IMPLICIT_FALLTHROUGH="-Wimplicit-fallthrough=5"
CONFIG_GCC12_NO_ARRAY_BOUNDS=y
CONFIG_CGROUPS=y
# CONFIG_CGROUP_FAVOR_DYNMODS is not set
# CONFIG_MEMCG is not set
CONFIG_BLK_CGROUP=y
CONFIG_CGROUP_SCHED=y
CONFIG_FAIR_GROUP_SCHED=y
# CONFIG_CFS_BANDWIDTH is not set
# CONFIG_RT_GROUP_SCHED is not set
# CONFIG_CGROUP_PIDS is not set
# CONFIG_CGROUP_RDMA is not set
CONFIG_CGROUP_FREEZER=y
CONFIG_CGROUP_DEVICE=y
CONFIG_CGROUP_CPUACCT=y
# CONFIG_CGROUP_MISC is not set
# CONFIG_CGROUP_DEBUG is not set
CONFIG_NAMESPACES=y
CONFIG_UTS_NS=y
CONFIG_IPC_NS=y
# CONFIG_USER_NS is not set
# CONFIG_PID_NS is not set
CONFIG_NET_NS=y
# CONFIG_CHECKPOINT_RESTORE is not set
# CONFIG_SCHED_AUTOGROUP is not set
CONFIG_SYSFS_DEPRECATED=y
# CONFIG_SYSFS_DEPRECATED_V2 is not set
# CONFIG_RELAY is not set
# CONFIG_BLK_DEV_INITRD is not set
# CONFIG_BOOT_CONFIG is not set
CONFIG_INITRAMFS_PRESERVE_MTIME=y
# CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE is not set
CONFIG_CC_OPTIMIZE_FOR_SIZE=y
CONFIG_SYSCTL=y
CONFIG_HAVE_UID16=y
# CONFIG_EXPERT is not set
CONFIG_UID16=y
CONFIG_MULTIUSER=y
CONFIG_SYSFS_SYSCALL=y
CONFIG_FHANDLE=y
CONFIG_POSIX_TIMERS=y
CONFIG_PRINTK=y
CONFIG_BUG=y
CONFIG_ELF_CORE=y
CONFIG_BASE_FULL=y
CONFIG_FUTEX=y
CONFIG_FUTEX_PI=y
CONFIG_EPOLL=y
CONFIG_SIGNALFD=y
CONFIG_TIMERFD=y
CONFIG_EVENTFD=y
CONFIG_SHMEM=y
CONFIG_AIO=y
CONFIG_IO_URING=y
CONFIG_ADVISE_SYSCALLS=y
CONFIG_MEMBARRIER=y
CONFIG_KALLSYMS=y
# CONFIG_KALLSYMS_ALL is not set
CONFIG_KALLSYMS_BASE_RELATIVE=y
# CONFIG_EMBEDDED is not set
#
# Kernel Performance Events And Counters
#
# end of Kernel Performance Events And Counters
# CONFIG_PROFILING is not set
# end of General setup
#
# UML-specific options
#
CONFIG_UML=y
CONFIG_MMU=y
CONFIG_NO_IOMEM=y
CONFIG_NO_IOPORT_MAP=y
CONFIG_LOCKDEP_SUPPORT=y
CONFIG_STACKTRACE_SUPPORT=y
CONFIG_GENERIC_CALIBRATE_DELAY=y
CONFIG_HZ=100
CONFIG_NR_CPUS=1
CONFIG_ARCH_HAS_CACHE_LINE_SIZE=y
#
# Host processor type and features
#
# CONFIG_M486SX is not set
# CONFIG_M486 is not set
# CONFIG_M586 is not set
# CONFIG_M586TSC is not set
# CONFIG_M586MMX is not set
CONFIG_M686=y
# CONFIG_MPENTIUMII is not set
# CONFIG_MPENTIUMIII is not set
# CONFIG_MPENTIUMM is not set
# CONFIG_MPENTIUM4 is not set
# CONFIG_MK6 is not set
# CONFIG_MK7 is not set
# CONFIG_MK8 is not set
# CONFIG_MCRUSOE is not set
# CONFIG_MEFFICEON is not set
# CONFIG_MWINCHIPC6 is not set
# CONFIG_MWINCHIP3D is not set
# CONFIG_MELAN is not set
# CONFIG_MGEODEGX1 is not set
# CONFIG_MGEODE_LX is not set
# CONFIG_MCYRIXIII is not set
# CONFIG_MVIAC3_2 is not set
# CONFIG_MVIAC7 is not set
# CONFIG_MCORE2 is not set
# CONFIG_MATOM is not set
# CONFIG_X86_GENERIC is not set
CONFIG_X86_INTERNODE_CACHE_SHIFT=5
CONFIG_X86_L1_CACHE_SHIFT=5
CONFIG_X86_USE_PPRO_CHECKSUM=y
CONFIG_X86_TSC=y
CONFIG_X86_CMPXCHG64=y
CONFIG_X86_CMOV=y
CONFIG_X86_MINIMUM_CPU_FAMILY=6
CONFIG_IA32_FEAT_CTL=y
CONFIG_CPU_SUP_INTEL=y
CONFIG_CPU_SUP_AMD=y
CONFIG_CPU_SUP_HYGON=y
CONFIG_CPU_SUP_CENTAUR=y
CONFIG_CPU_SUP_TRANSMETA_32=y
CONFIG_CPU_SUP_ZHAOXIN=y
CONFIG_CPU_SUP_VORTEX_32=y
# end of Host processor type and features
CONFIG_UML_X86=y
CONFIG_X86_32=y
CONFIG_3_LEVEL_PGTABLES=y
CONFIG_ARCH_HAS_SC_SIGNALS=y
CONFIG_ARCH_REUSE_HOST_VSYSCALL_AREA=y
CONFIG_GENERIC_HWEIGHT=y
# CONFIG_STATIC_LINK is not set
CONFIG_LD_SCRIPT_DYN=y
CONFIG_LD_SCRIPT_DYN_RPATH=y
CONFIG_HOSTFS=y
CONFIG_MCONSOLE=y
CONFIG_MAGIC_SYSRQ=y
CONFIG_KERNEL_STACK_ORDER=1
# CONFIG_MMAPPER is not set
CONFIG_PGTABLE_LEVELS=3
# CONFIG_UML_TIME_TRAVEL_SUPPORT is not set
# end of UML-specific options
#
# UML Character Devices
#
CONFIG_STDERR_CONSOLE=y
CONFIG_SSL=y
CONFIG_NULL_CHAN=y
CONFIG_PORT_CHAN=y
CONFIG_PTY_CHAN=y
CONFIG_TTY_CHAN=y
CONFIG_XTERM_CHAN=y
CONFIG_XTERM_CHAN_DEFAULT_EMULATOR="xterm"
CONFIG_CON_ZERO_CHAN="fd:0,fd:1"
CONFIG_CON_CHAN="pts"
CONFIG_SSL_CHAN="pts"
CONFIG_UML_SOUND=m
CONFIG_SOUND=m
CONFIG_SOUND_OSS_CORE=y
CONFIG_HOSTAUDIO=m
# end of UML Character Devices
#
# UML Network Devices
#
CONFIG_UML_NET=y
CONFIG_UML_NET_ETHERTAP=y
CONFIG_UML_NET_TUNTAP=y
CONFIG_UML_NET_SLIP=y
CONFIG_UML_NET_DAEMON=y
CONFIG_UML_NET_DAEMON_DEFAULT_SOCK="/tmp/uml.ctl"
# CONFIG_UML_NET_VECTOR is not set
# CONFIG_UML_NET_VDE is not set
CONFIG_UML_NET_MCAST=y
# CONFIG_UML_NET_PCAP is not set
CONFIG_UML_NET_SLIRP=y
# end of UML Network Devices
# CONFIG_VIRTIO_UML is not set
CONFIG_ARCH_SUSPEND_POSSIBLE=y
CONFIG_SUSPEND=y
CONFIG_SUSPEND_FREEZER=y
CONFIG_PM_SLEEP=y
# CONFIG_PM_AUTOSLEEP is not set
# CONFIG_PM_USERSPACE_AUTOSLEEP is not set
# CONFIG_PM_WAKELOCKS is not set
CONFIG_PM=y
# CONFIG_PM_DEBUG is not set
# CONFIG_WQ_POWER_EFFICIENT_DEFAULT is not set
#
# General architecture-dependent options
#
CONFIG_CRASH_CORE=y
CONFIG_TRACE_IRQFLAGS_SUPPORT=y
CONFIG_ARCH_32BIT_OFF_T=y
CONFIG_HAVE_ASM_MODVERSIONS=y
CONFIG_ARCH_WANT_IPC_PARSE_VERSION=y
CONFIG_HAVE_ARCH_SECCOMP=y
CONFIG_HAVE_ARCH_SECCOMP_FILTER=y
CONFIG_SECCOMP=y
CONFIG_SECCOMP_FILTER=y
# CONFIG_SECCOMP_CACHE_DEBUG is not set
CONFIG_LTO_NONE=y
CONFIG_MODULES_USE_ELF_REL=y
CONFIG_PAGE_SIZE_LESS_THAN_64KB=y
CONFIG_PAGE_SIZE_LESS_THAN_256KB=y
CONFIG_CLONE_BACKWARDS=y
CONFIG_OLD_SIGSUSPEND3=y
CONFIG_OLD_SIGACTION=y
CONFIG_COMPAT_32BIT_TIME=y
CONFIG_ARCH_NO_PREEMPT=y
CONFIG_ARCH_EPHEMERAL_INODES=y
CONFIG_HAVE_ARCH_VMAP_STACK=y
CONFIG_VMAP_STACK=y
#
# GCOV-based kernel profiling
#
CONFIG_ARCH_HAS_GCOV_PROFILE_ALL=y
# end of GCOV-based kernel profiling
CONFIG_HAVE_GCC_PLUGINS=y
CONFIG_GCC_PLUGINS=y
# CONFIG_GCC_PLUGIN_LATENT_ENTROPY is not set
# end of General architecture-dependent options
CONFIG_RT_MUTEXES=y
CONFIG_BASE_SMALL=0
CONFIG_MODULES=y
# CONFIG_MODULE_FORCE_LOAD is not set
CONFIG_MODULE_UNLOAD=y
# CONFIG_MODULE_FORCE_UNLOAD is not set
# CONFIG_MODULE_UNLOAD_TAINT_TRACKING is not set
# CONFIG_MODVERSIONS is not set
# CONFIG_MODULE_SRCVERSION_ALL is not set
# CONFIG_MODULE_SIG is not set
CONFIG_MODULE_COMPRESS_NONE=y
# CONFIG_MODULE_COMPRESS_GZIP is not set
# CONFIG_MODULE_COMPRESS_XZ is not set
# CONFIG_MODULE_COMPRESS_ZSTD is not set
# CONFIG_MODULE_ALLOW_MISSING_NAMESPACE_IMPORTS is not set
CONFIG_MODPROBE_PATH="/sbin/modprobe"
CONFIG_BLOCK=y
CONFIG_BLOCK_LEGACY_AUTOLOAD=y
CONFIG_BLK_ICQ=y
# CONFIG_BLK_DEV_BSGLIB is not set
# CONFIG_BLK_DEV_INTEGRITY is not set
# CONFIG_BLK_DEV_ZONED is not set
# CONFIG_BLK_DEV_THROTTLING is not set
# CONFIG_BLK_WBT is not set
# CONFIG_BLK_CGROUP_IOLATENCY is not set
# CONFIG_BLK_CGROUP_IOCOST is not set
# CONFIG_BLK_CGROUP_IOPRIO is not set
# CONFIG_BLK_SED_OPAL is not set
# CONFIG_BLK_INLINE_ENCRYPTION is not set
#
# Partition Types
#
# CONFIG_PARTITION_ADVANCED is not set
CONFIG_MSDOS_PARTITION=y
CONFIG_EFI_PARTITION=y
# end of Partition Types
CONFIG_BLK_PM=y
#
# IO Schedulers
#
CONFIG_MQ_IOSCHED_DEADLINE=y
CONFIG_MQ_IOSCHED_KYBER=y
CONFIG_IOSCHED_BFQ=m
# CONFIG_BFQ_GROUP_IOSCHED is not set
# end of IO Schedulers
CONFIG_INLINE_SPIN_UNLOCK_IRQ=y
CONFIG_INLINE_READ_UNLOCK=y
CONFIG_INLINE_READ_UNLOCK_IRQ=y
CONFIG_INLINE_WRITE_UNLOCK=y
CONFIG_INLINE_WRITE_UNLOCK_IRQ=y
CONFIG_FREEZER=y
#
# Executable file formats
#
CONFIG_BINFMT_ELF=y
CONFIG_ARCH_BINFMT_ELF_EXTRA_PHDRS=y
CONFIG_ELFCORE=y
CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS=y
CONFIG_BINFMT_SCRIPT=y
CONFIG_BINFMT_MISC=m
CONFIG_COREDUMP=y
# end of Executable file formats
#
# Memory Management options
#
CONFIG_SWAP=y
# CONFIG_ZSWAP is not set
#
# SLAB allocator options
#
CONFIG_SLAB=y
# CONFIG_SLUB is not set
CONFIG_SLAB_MERGE_DEFAULT=y
# CONFIG_SLAB_FREELIST_RANDOM is not set
# CONFIG_SLAB_FREELIST_HARDENED is not set
# end of SLAB allocator options
# CONFIG_SHUFFLE_PAGE_ALLOCATOR is not set
CONFIG_COMPAT_BRK=y
CONFIG_FLATMEM=y
CONFIG_SPLIT_PTLOCK_CPUS=4
# CONFIG_COMPACTION is not set
# CONFIG_PAGE_REPORTING is not set
# CONFIG_KSM is not set
CONFIG_DEFAULT_MMAP_MIN_ADDR=4096
CONFIG_NEED_PER_CPU_KM=y
# CONFIG_CMA is not set
# CONFIG_IDLE_PAGE_TRACKING is not set
CONFIG_VM_EVENT_COUNTERS=y
# CONFIG_PERCPU_STATS is not set
#
# GUP_TEST needs to have DEBUG_FS enabled
#
# CONFIG_ANON_VMA_NAME is not set
# CONFIG_USERFAULTFD is not set
#
# Data Access Monitoring
#
# CONFIG_DAMON is not set
# end of Data Access Monitoring
# end of Memory Management options
CONFIG_NET=y
#
# Networking options
#
CONFIG_PACKET=y
# CONFIG_PACKET_DIAG is not set
CONFIG_UNIX=y
CONFIG_UNIX_SCM=y
CONFIG_AF_UNIX_OOB=y
# CONFIG_UNIX_DIAG is not set
# CONFIG_TLS is not set
# CONFIG_XFRM_USER is not set
# CONFIG_NET_KEY is not set
CONFIG_INET=y
# CONFIG_IP_MULTICAST is not set
# CONFIG_IP_ADVANCED_ROUTER is not set
# CONFIG_IP_PNP is not set
# CONFIG_NET_IPIP is not set
# CONFIG_NET_IPGRE_DEMUX is not set
# CONFIG_SYN_COOKIES is not set
# CONFIG_NET_IPVTI is not set
# CONFIG_NET_FOU is not set
# CONFIG_INET_AH is not set
# CONFIG_INET_ESP is not set
# CONFIG_INET_IPCOMP is not set
CONFIG_INET_DIAG=y
CONFIG_INET_TCP_DIAG=y
# CONFIG_INET_UDP_DIAG is not set
# CONFIG_INET_RAW_DIAG is not set
# CONFIG_INET_DIAG_DESTROY is not set
# CONFIG_TCP_CONG_ADVANCED is not set
CONFIG_TCP_CONG_CUBIC=y
CONFIG_DEFAULT_TCP_CONG="cubic"
# CONFIG_TCP_MD5SIG is not set
# CONFIG_IPV6 is not set
# CONFIG_MPTCP is not set
# CONFIG_NETWORK_SECMARK is not set
CONFIG_NET_PTP_CLASSIFY=y
# CONFIG_NETWORK_PHY_TIMESTAMPING is not set
# CONFIG_NETFILTER is not set
# CONFIG_BPFILTER is not set
# CONFIG_IP_DCCP is not set
# CONFIG_IP_SCTP is not set
# CONFIG_RDS is not set
# CONFIG_TIPC is not set
# CONFIG_ATM is not set
# CONFIG_L2TP is not set
# CONFIG_BRIDGE is not set
# CONFIG_NET_DSA is not set
# CONFIG_VLAN_8021Q is not set
# CONFIG_DECNET is not set
# CONFIG_LLC2 is not set
# CONFIG_ATALK is not set
# CONFIG_X25 is not set
# CONFIG_LAPB is not set
# CONFIG_PHONET is not set
# CONFIG_IEEE802154 is not set
# CONFIG_NET_SCHED is not set
# CONFIG_DCB is not set
# CONFIG_BATMAN_ADV is not set
# CONFIG_OPENVSWITCH is not set
# CONFIG_VSOCKETS is not set
# CONFIG_NETLINK_DIAG is not set
# CONFIG_MPLS is not set
# CONFIG_NET_NSH is not set
# CONFIG_HSR is not set
# CONFIG_NET_SWITCHDEV is not set
# CONFIG_NET_L3_MASTER_DEV is not set
# CONFIG_QRTR is not set
# CONFIG_NET_NCSI is not set
# CONFIG_CGROUP_NET_PRIO is not set
# CONFIG_CGROUP_NET_CLASSID is not set
CONFIG_NET_RX_BUSY_POLL=y
CONFIG_BQL=y
#
# Network testing
#
# CONFIG_NET_PKTGEN is not set
# end of Network testing
# end of Networking options
# CONFIG_HAMRADIO is not set
# CONFIG_CAN is not set
# CONFIG_BT is not set
# CONFIG_AF_RXRPC is not set
# CONFIG_AF_KCM is not set
# CONFIG_MCTP is not set
CONFIG_WIRELESS=y
# CONFIG_CFG80211 is not set
#
# CFG80211 needs to be enabled for MAC80211
#
CONFIG_MAC80211_STA_HASH_MAX_SIZE=0
# CONFIG_RFKILL is not set
# CONFIG_NET_9P is not set
# CONFIG_CAIF is not set
# CONFIG_CEPH_LIB is not set
# CONFIG_NFC is not set
# CONFIG_PSAMPLE is not set
# CONFIG_NET_IFE is not set
# CONFIG_LWTUNNEL is not set
# CONFIG_FAILOVER is not set
CONFIG_ETHTOOL_NETLINK=y
#
# Device Drivers
#
#
# Generic Driver Options
#
# CONFIG_UEVENT_HELPER is not set
CONFIG_DEVTMPFS=y
CONFIG_DEVTMPFS_MOUNT=y
# CONFIG_DEVTMPFS_SAFE is not set
CONFIG_STANDALONE=y
CONFIG_PREVENT_FIRMWARE_BUILD=y
#
# Firmware loader
#
CONFIG_FW_LOADER=y
CONFIG_EXTRA_FIRMWARE=""
# CONFIG_FW_LOADER_USER_HELPER is not set
# CONFIG_FW_LOADER_COMPRESS is not set
CONFIG_FW_CACHE=y
# CONFIG_FW_UPLOAD is not set
# end of Firmware loader
CONFIG_ALLOW_DEV_COREDUMP=y
# CONFIG_DEBUG_DRIVER is not set
# CONFIG_DEBUG_DEVRES is not set
# CONFIG_DEBUG_TEST_DRIVER_REMOVE is not set
# CONFIG_TEST_ASYNC_DRIVER_PROBE is not set
CONFIG_GENERIC_CPU_DEVICES=y
# end of Generic Driver Options
#
# Bus devices
#
# CONFIG_MHI_BUS is not set
# CONFIG_MHI_BUS_EP is not set
# end of Bus devices
# CONFIG_CONNECTOR is not set
#
# Firmware Drivers
#
#
# ARM System Control and Management Interface Protocol
#
# end of ARM System Control and Management Interface Protocol
# CONFIG_GOOGLE_FIRMWARE is not set
#
# Tegra firmware driver
#
# end of Tegra firmware driver
# end of Firmware Drivers
# CONFIG_GNSS is not set
# CONFIG_MTD is not set
# CONFIG_OF is not set
CONFIG_BLK_DEV=y
# CONFIG_BLK_DEV_NULL_BLK is not set
CONFIG_BLK_DEV_UBD=y
# CONFIG_BLK_DEV_UBD_SYNC is not set
CONFIG_BLK_DEV_COW_COMMON=y
CONFIG_BLK_DEV_LOOP=m
CONFIG_BLK_DEV_LOOP_MIN_COUNT=8
# CONFIG_BLK_DEV_DRBD is not set
CONFIG_BLK_DEV_NBD=m
# CONFIG_BLK_DEV_RAM is not set
# CONFIG_ATA_OVER_ETH is not set
# CONFIG_BLK_DEV_RBD is not set
# CONFIG_BLK_DEV_UBLK is not set
#
# NVME Support
#
# CONFIG_NVME_TCP is not set
# end of NVME Support
#
# Misc devices
#
# CONFIG_DUMMY_IRQ is not set
# CONFIG_ENCLOSURE_SERVICES is not set
# CONFIG_C2PORT is not set
#
# EEPROM support
#
# CONFIG_EEPROM_93CX6 is not set
# end of EEPROM support
#
# Texas Instruments shared transport line discipline
#
# end of Texas Instruments shared transport line discipline
#
# Altera FPGA firmware download module (requires I2C)
#
# CONFIG_ECHO is not set
# CONFIG_PVPANIC is not set
# end of Misc devices
#
# SCSI device support
#
CONFIG_SCSI_MOD=y
# CONFIG_RAID_ATTRS is not set
# CONFIG_SCSI is not set
# end of SCSI device support
# CONFIG_MD is not set
# CONFIG_TARGET_CORE is not set
CONFIG_NETDEVICES=y
CONFIG_NET_CORE=y
# CONFIG_BONDING is not set
CONFIG_DUMMY=m
# CONFIG_WIREGUARD is not set
# CONFIG_EQUALIZER is not set
# CONFIG_NET_TEAM is not set
# CONFIG_MACVLAN is not set
# CONFIG_IPVLAN is not set
# CONFIG_VXLAN is not set
# CONFIG_GENEVE is not set
# CONFIG_BAREUDP is not set
# CONFIG_GTP is not set
# CONFIG_MACSEC is not set
# CONFIG_NETCONSOLE is not set
CONFIG_TUN=m
# CONFIG_TUN_VNET_CROSS_LE is not set
# CONFIG_VETH is not set
# CONFIG_NLMON is not set
CONFIG_ETHERNET=y
CONFIG_NET_VENDOR_ALACRITECH=y
CONFIG_NET_VENDOR_AMAZON=y
CONFIG_NET_VENDOR_AQUANTIA=y
CONFIG_NET_VENDOR_ARC=y
CONFIG_NET_VENDOR_ASIX=y
CONFIG_NET_VENDOR_CAVIUM=y
CONFIG_NET_VENDOR_CORTINA=y
CONFIG_NET_VENDOR_DAVICOM=y
CONFIG_NET_VENDOR_ENGLEDER=y
CONFIG_NET_VENDOR_EZCHIP=y
CONFIG_NET_VENDOR_FUNGIBLE=y
CONFIG_NET_VENDOR_GOOGLE=y
CONFIG_NET_VENDOR_HUAWEI=y
CONFIG_NET_VENDOR_I825XX=y
CONFIG_NET_VENDOR_INTEL=y
CONFIG_NET_VENDOR_WANGXUN=y
CONFIG_NET_VENDOR_LITEX=y
CONFIG_NET_VENDOR_MARVELL=y
CONFIG_NET_VENDOR_MICROCHIP=y
CONFIG_NET_VENDOR_MICROSEMI=y
CONFIG_NET_VENDOR_MICROSOFT=y
CONFIG_NET_VENDOR_NI=y
CONFIG_NET_VENDOR_NATSEMI=y
CONFIG_NET_VENDOR_NETRONOME=y
CONFIG_NET_VENDOR_8390=y
CONFIG_NET_VENDOR_PENSANDO=y
CONFIG_NET_VENDOR_QUALCOMM=y
# CONFIG_RMNET is not set
CONFIG_NET_VENDOR_RENESAS=y
CONFIG_NET_VENDOR_ROCKER=y
CONFIG_NET_VENDOR_SAMSUNG=y
CONFIG_NET_VENDOR_SOLARFLARE=y
CONFIG_NET_VENDOR_SOCIONEXT=y
CONFIG_NET_VENDOR_SYNOPSYS=y
CONFIG_NET_VENDOR_VERTEXCOM=y
CONFIG_NET_VENDOR_VIA=y
CONFIG_NET_VENDOR_XILINX=y
# CONFIG_PHYLIB is not set
# CONFIG_MDIO_DEVICE is not set
#
# PCS device drivers
#
# end of PCS device drivers
CONFIG_PPP=m
# CONFIG_PPP_BSDCOMP is not set
# CONFIG_PPP_DEFLATE is not set
# CONFIG_PPP_FILTER is not set
# CONFIG_PPP_MPPE is not set
# CONFIG_PPP_MULTILINK is not set
# CONFIG_PPPOE is not set
# CONFIG_PPP_ASYNC is not set
# CONFIG_PPP_SYNC_TTY is not set
CONFIG_SLIP=m
CONFIG_SLHC=m
# CONFIG_SLIP_COMPRESSED is not set
# CONFIG_SLIP_SMART is not set
# CONFIG_SLIP_MODE_SLIP6 is not set
#
# Host-side USB support is needed for USB Network Adapter support
#
CONFIG_WLAN=y
CONFIG_WLAN_VENDOR_ADMTEK=y
CONFIG_WLAN_VENDOR_ATH=y
# CONFIG_ATH_DEBUG is not set
CONFIG_WLAN_VENDOR_ATMEL=y
CONFIG_WLAN_VENDOR_BROADCOM=y
CONFIG_WLAN_VENDOR_CISCO=y
CONFIG_WLAN_VENDOR_INTEL=y
CONFIG_WLAN_VENDOR_INTERSIL=y
# CONFIG_HOSTAP is not set
CONFIG_WLAN_VENDOR_MARVELL=y
CONFIG_WLAN_VENDOR_MEDIATEK=y
CONFIG_WLAN_VENDOR_MICROCHIP=y
CONFIG_WLAN_VENDOR_PURELIFI=y
CONFIG_WLAN_VENDOR_RALINK=y
CONFIG_WLAN_VENDOR_REALTEK=y
CONFIG_WLAN_VENDOR_RSI=y
CONFIG_WLAN_VENDOR_SILABS=y
CONFIG_WLAN_VENDOR_ST=y
CONFIG_WLAN_VENDOR_TI=y
CONFIG_WLAN_VENDOR_ZYDAS=y
CONFIG_WLAN_VENDOR_QUANTENNA=y
# CONFIG_WAN is not set
#
# Wireless WAN
#
# CONFIG_WWAN is not set
# end of Wireless WAN
# CONFIG_NET_FAILOVER is not set
#
# Input device support
#
CONFIG_INPUT=y
CONFIG_INPUT_FF_MEMLESS=y
# CONFIG_INPUT_SPARSEKMAP is not set
# CONFIG_INPUT_MATRIXKMAP is not set
CONFIG_INPUT_VIVALDIFMAP=y
#
# Userland interfaces
#
# CONFIG_INPUT_MOUSEDEV is not set
# CONFIG_INPUT_JOYDEV is not set
# CONFIG_INPUT_EVDEV is not set
# CONFIG_INPUT_EVBUG is not set
#
# Input Device Drivers
#
CONFIG_INPUT_KEYBOARD=y
CONFIG_KEYBOARD_ATKBD=y
# CONFIG_KEYBOARD_LKKBD is not set
# CONFIG_KEYBOARD_NEWTON is not set
# CONFIG_KEYBOARD_STOWAWAY is not set
# CONFIG_KEYBOARD_SUNKBD is not set
# CONFIG_KEYBOARD_XTKBD is not set
CONFIG_INPUT_MOUSE=y
CONFIG_MOUSE_PS2=y
CONFIG_MOUSE_PS2_ALPS=y
CONFIG_MOUSE_PS2_BYD=y
CONFIG_MOUSE_PS2_LOGIPS2PP=y
CONFIG_MOUSE_PS2_SYNAPTICS=y
CONFIG_MOUSE_PS2_CYPRESS=y
CONFIG_MOUSE_PS2_TRACKPOINT=y
# CONFIG_MOUSE_PS2_ELANTECH is not set
# CONFIG_MOUSE_PS2_SENTELIC is not set
# CONFIG_MOUSE_PS2_TOUCHKIT is not set
CONFIG_MOUSE_PS2_FOCALTECH=y
# CONFIG_MOUSE_SERIAL is not set
# CONFIG_MOUSE_VSXXXAA is not set
# CONFIG_INPUT_TABLET is not set
# CONFIG_INPUT_TOUCHSCREEN is not set
# CONFIG_INPUT_MISC is not set
# CONFIG_RMI4_CORE is not set
#
# Hardware I/O ports
#
CONFIG_SERIO=y
CONFIG_SERIO_SERPORT=y
CONFIG_SERIO_LIBPS2=y
# CONFIG_SERIO_RAW is not set
# CONFIG_SERIO_PS2MULT is not set
# CONFIG_USERIO is not set
# end of Hardware I/O ports
# end of Input device support
#
# Character devices
#
CONFIG_TTY=y
CONFIG_UNIX98_PTYS=y
CONFIG_LEGACY_PTYS=y
CONFIG_LEGACY_PTY_COUNT=32
CONFIG_LDISC_AUTOLOAD=y
# CONFIG_N_GSM is not set
# CONFIG_NULL_TTY is not set
# CONFIG_SERIAL_DEV_BUS is not set
# CONFIG_VIRTIO_CONSOLE is not set
CONFIG_HW_RANDOM=y
CONFIG_UML_RANDOM=y
# CONFIG_NSC_GPIO is not set
CONFIG_DEVMEM=y
CONFIG_RANDOM_TRUST_CPU=y
CONFIG_RANDOM_TRUST_BOOTLOADER=y
# end of Character devices
#
# I2C support
#
# CONFIG_I2C is not set
# end of I2C support
# CONFIG_I3C is not set
# CONFIG_SPMI is not set
# CONFIG_HSI is not set
CONFIG_PPS=y
# CONFIG_PPS_DEBUG is not set
#
# PPS clients support
#
# CONFIG_PPS_CLIENT_KTIMER is not set
# CONFIG_PPS_CLIENT_LDISC is not set
# CONFIG_PPS_CLIENT_GPIO is not set
#
# PPS generators support
#
#
# PTP clock support
#
CONFIG_PTP_1588_CLOCK=y
CONFIG_PTP_1588_CLOCK_OPTIONAL=y
#
# Enable PHYLIB and NETWORK_PHY_TIMESTAMPING to see the additional clocks.
#
# end of PTP clock support
# CONFIG_PINCTRL is not set
# CONFIG_GPIOLIB is not set
# CONFIG_POWER_RESET is not set
# CONFIG_POWER_SUPPLY is not set
# CONFIG_THERMAL is not set
# CONFIG_WATCHDOG is not set
# CONFIG_REGULATOR is not set
# CONFIG_RC_CORE is not set
#
# CEC support
#
# CONFIG_MEDIA_CEC_SUPPORT is not set
# end of CEC support
#
# Graphics support
#
# end of Graphics support
CONFIG_SOUND_OSS_CORE_PRECLAIM=y
#
# HID support
#
CONFIG_HID=y
# CONFIG_HID_BATTERY_STRENGTH is not set
# CONFIG_HIDRAW is not set
# CONFIG_UHID is not set
CONFIG_HID_GENERIC=y
#
# Special HID drivers
#
CONFIG_HID_A4TECH=y
# CONFIG_HID_ACRUX is not set
# CONFIG_HID_AUREAL is not set
CONFIG_HID_BELKIN=y
CONFIG_HID_CHERRY=y
# CONFIG_HID_COUGAR is not set
# CONFIG_HID_MACALLY is not set
# CONFIG_HID_CMEDIA is not set
CONFIG_HID_CYPRESS=y
# CONFIG_HID_DRAGONRISE is not set
# CONFIG_HID_EMS_FF is not set
# CONFIG_HID_ELECOM is not set
CONFIG_HID_EZKEY=y
# CONFIG_HID_GEMBIRD is not set
# CONFIG_HID_GFRM is not set
# CONFIG_HID_GLORIOUS is not set
# CONFIG_HID_VIVALDI is not set
# CONFIG_HID_KEYTOUCH is not set
# CONFIG_HID_KYE is not set
# CONFIG_HID_WALTOP is not set
# CONFIG_HID_VIEWSONIC is not set
# CONFIG_HID_XIAOMI is not set
# CONFIG_HID_GYRATION is not set
# CONFIG_HID_ICADE is not set
CONFIG_HID_ITE=y
# CONFIG_HID_JABRA is not set
# CONFIG_HID_TWINHAN is not set
CONFIG_HID_KENSINGTON=y
# CONFIG_HID_LCPOWER is not set
# CONFIG_HID_LENOVO is not set
# CONFIG_HID_MAGICMOUSE is not set
# CONFIG_HID_MALTRON is not set
# CONFIG_HID_MAYFLASH is not set
CONFIG_HID_REDRAGON=y
CONFIG_HID_MICROSOFT=y
CONFIG_HID_MONTEREY=y
# CONFIG_HID_MULTITOUCH is not set
# CONFIG_HID_NTI is not set
# CONFIG_HID_ORTEK is not set
# CONFIG_HID_PANTHERLORD is not set
# CONFIG_HID_PETALYNX is not set
# CONFIG_HID_PICOLCD is not set
# CONFIG_HID_PLANTRONICS is not set
# CONFIG_HID_RAZER is not set
# CONFIG_HID_PRIMAX is not set
# CONFIG_HID_SAITEK is not set
# CONFIG_HID_SEMITEK is not set
# CONFIG_HID_SPEEDLINK is not set
# CONFIG_HID_STEAM is not set
# CONFIG_HID_STEELSERIES is not set
# CONFIG_HID_SUNPLUS is not set
# CONFIG_HID_RMI is not set
# CONFIG_HID_GREENASIA is not set
# CONFIG_HID_SMARTJOYPLUS is not set
# CONFIG_HID_TIVO is not set
# CONFIG_HID_TOPSEED is not set
# CONFIG_HID_UDRAW_PS3 is not set
# CONFIG_HID_XINMO is not set
# CONFIG_HID_ZEROPLUS is not set
# CONFIG_HID_ZYDACRON is not set
# CONFIG_HID_ALPS is not set
# end of Special HID drivers
# end of HID support
CONFIG_USB_OHCI_LITTLE_ENDIAN=y
# CONFIG_MEMSTICK is not set
# CONFIG_NEW_LEDS is not set
# CONFIG_ACCESSIBILITY is not set
# CONFIG_RTC_CLASS is not set
#
# DMABUF options
#
# CONFIG_SYNC_FILE is not set
# CONFIG_DMABUF_HEAPS is not set
# end of DMABUF options
# CONFIG_AUXDISPLAY is not set
# CONFIG_UIO is not set
# CONFIG_VFIO is not set
# CONFIG_VIRT_DRIVERS is not set
CONFIG_VIRTIO_MENU=y
# CONFIG_VDPA is not set
CONFIG_VHOST_MENU=y
# CONFIG_VHOST_NET is not set
# CONFIG_VHOST_CROSS_ENDIAN_LEGACY is not set
#
# Microsoft Hyper-V guest support
#
# end of Microsoft Hyper-V guest support
# CONFIG_GREYBUS is not set
# CONFIG_COMEDI is not set
# CONFIG_STAGING is not set
# CONFIG_COMMON_CLK is not set
# CONFIG_HWSPINLOCK is not set
#
# Clock Source drivers
#
# end of Clock Source drivers
# CONFIG_MAILBOX is not set
CONFIG_IOMMU_SUPPORT=y
#
# Generic IOMMU Pagetable Support
#
# end of Generic IOMMU Pagetable Support
#
# Remoteproc drivers
#
# end of Remoteproc drivers
#
# Rpmsg drivers
#
# end of Rpmsg drivers
#
# SOC (System On Chip) specific Drivers
#
#
# Amlogic SoC drivers
#
# end of Amlogic SoC drivers
#
# Broadcom SoC drivers
#
# end of Broadcom SoC drivers
#
# NXP/Freescale QorIQ SoC drivers
#
# end of NXP/Freescale QorIQ SoC drivers
#
# fujitsu SoC drivers
#
# end of fujitsu SoC drivers
#
# i.MX SoC drivers
#
# end of i.MX SoC drivers
#
# Enable LiteX SoC Builder specific drivers
#
# end of Enable LiteX SoC Builder specific drivers
#
# Qualcomm SoC drivers
#
# end of Qualcomm SoC drivers
# CONFIG_SOC_TI is not set
#
# Xilinx SoC drivers
#
# end of Xilinx SoC drivers
# end of SOC (System On Chip) specific Drivers
# CONFIG_PM_DEVFREQ is not set
# CONFIG_EXTCON is not set
# CONFIG_MEMORY is not set
# CONFIG_IIO is not set
# CONFIG_PWM is not set
#
# IRQ chip support
#
# end of IRQ chip support
# CONFIG_RESET_CONTROLLER is not set
#
# PHY Subsystem
#
# CONFIG_GENERIC_PHY is not set
# CONFIG_PHY_CAN_TRANSCEIVER is not set
#
# PHY drivers for Broadcom platforms
#
# end of PHY drivers for Broadcom platforms
# end of PHY Subsystem
# CONFIG_POWERCAP is not set
# CONFIG_RAS is not set
#
# Android
#
# CONFIG_ANDROID_BINDER_IPC is not set
# end of Android
# CONFIG_DAX is not set
# CONFIG_NVMEM is not set
#
# HW tracing support
#
# CONFIG_STM is not set
# end of HW tracing support
# CONFIG_FPGA is not set
# CONFIG_TEE is not set
# CONFIG_SIOX is not set
# CONFIG_SLIMBUS is not set
# CONFIG_INTERCONNECT is not set
# CONFIG_COUNTER is not set
# CONFIG_PECI is not set
# CONFIG_HTE is not set
# end of Device Drivers
#
# File systems
#
CONFIG_DCACHE_WORD_ACCESS=y
# CONFIG_VALIDATE_FS_PARSER is not set
CONFIG_FS_IOMAP=y
# CONFIG_EXT2_FS is not set
# CONFIG_EXT3_FS is not set
CONFIG_EXT4_FS=y
CONFIG_EXT4_USE_FOR_EXT2=y
# CONFIG_EXT4_FS_POSIX_ACL is not set
# CONFIG_EXT4_FS_SECURITY is not set
# CONFIG_EXT4_DEBUG is not set
CONFIG_JBD2=y
# CONFIG_JBD2_DEBUG is not set
CONFIG_FS_MBCACHE=y
CONFIG_REISERFS_FS=y
# CONFIG_REISERFS_CHECK is not set
# CONFIG_REISERFS_PROC_INFO is not set
# CONFIG_REISERFS_FS_XATTR is not set
# CONFIG_JFS_FS is not set
# CONFIG_XFS_FS is not set
# CONFIG_GFS2_FS is not set
# CONFIG_BTRFS_FS is not set
# CONFIG_NILFS2_FS is not set
# CONFIG_F2FS_FS is not set
CONFIG_EXPORTFS=y
# CONFIG_EXPORTFS_BLOCK_OPS is not set
CONFIG_FILE_LOCKING=y
# CONFIG_FS_ENCRYPTION is not set
# CONFIG_FS_VERITY is not set
CONFIG_FSNOTIFY=y
CONFIG_DNOTIFY=y
CONFIG_INOTIFY_USER=y
# CONFIG_FANOTIFY is not set
CONFIG_QUOTA=y
# CONFIG_QUOTA_NETLINK_INTERFACE is not set
CONFIG_PRINT_QUOTA_WARNING=y
# CONFIG_QUOTA_DEBUG is not set
# CONFIG_QFMT_V1 is not set
# CONFIG_QFMT_V2 is not set
CONFIG_QUOTACTL=y
CONFIG_AUTOFS4_FS=m
CONFIG_AUTOFS_FS=m
# CONFIG_FUSE_FS is not set
# CONFIG_OVERLAY_FS is not set
#
# Caches
#
# CONFIG_FSCACHE is not set
# end of Caches
#
# CD-ROM/DVD Filesystems
#
CONFIG_ISO9660_FS=m
CONFIG_JOLIET=y
# CONFIG_ZISOFS is not set
# CONFIG_UDF_FS is not set
# end of CD-ROM/DVD Filesystems
#
# DOS/FAT/EXFAT/NT Filesystems
#
# CONFIG_MSDOS_FS is not set
# CONFIG_VFAT_FS is not set
# CONFIG_EXFAT_FS is not set
# CONFIG_NTFS_FS is not set
# CONFIG_NTFS3_FS is not set
# end of DOS/FAT/EXFAT/NT Filesystems
#
# Pseudo filesystems
#
CONFIG_PROC_FS=y
CONFIG_PROC_KCORE=y
CONFIG_PROC_SYSCTL=y
CONFIG_PROC_PAGE_MONITOR=y
# CONFIG_PROC_CHILDREN is not set
CONFIG_KERNFS=y
CONFIG_SYSFS=y
CONFIG_TMPFS=y
# CONFIG_TMPFS_POSIX_ACL is not set
# CONFIG_TMPFS_XATTR is not set
CONFIG_MEMFD_CREATE=y
# CONFIG_CONFIGFS_FS is not set
# end of Pseudo filesystems
CONFIG_MISC_FILESYSTEMS=y
# CONFIG_ORANGEFS_FS is not set
# CONFIG_ADFS_FS is not set
# CONFIG_AFFS_FS is not set
# CONFIG_HFS_FS is not set
# CONFIG_HFSPLUS_FS is not set
# CONFIG_BEFS_FS is not set
# CONFIG_BFS_FS is not set
# CONFIG_EFS_FS is not set
# CONFIG_CRAMFS is not set
# CONFIG_SQUASHFS is not set
# CONFIG_VXFS_FS is not set
# CONFIG_MINIX_FS is not set
# CONFIG_OMFS_FS is not set
# CONFIG_HPFS_FS is not set
# CONFIG_QNX4FS_FS is not set
# CONFIG_QNX6FS_FS is not set
# CONFIG_ROMFS_FS is not set
# CONFIG_PSTORE is not set
# CONFIG_SYSV_FS is not set
# CONFIG_UFS_FS is not set
# CONFIG_EROFS_FS is not set
CONFIG_NETWORK_FILESYSTEMS=y
# CONFIG_NFS_FS is not set
# CONFIG_NFSD is not set
# CONFIG_CEPH_FS is not set
# CONFIG_CIFS is not set
# CONFIG_SMB_SERVER is not set
# CONFIG_CODA_FS is not set
# CONFIG_AFS_FS is not set
CONFIG_NLS=y
CONFIG_NLS_DEFAULT="iso8859-1"
# CONFIG_NLS_CODEPAGE_437 is not set
# CONFIG_NLS_CODEPAGE_737 is not set
# CONFIG_NLS_CODEPAGE_775 is not set
# CONFIG_NLS_CODEPAGE_850 is not set
# CONFIG_NLS_CODEPAGE_852 is not set
# CONFIG_NLS_CODEPAGE_855 is not set
# CONFIG_NLS_CODEPAGE_857 is not set
# CONFIG_NLS_CODEPAGE_860 is not set
# CONFIG_NLS_CODEPAGE_861 is not set
# CONFIG_NLS_CODEPAGE_862 is not set
# CONFIG_NLS_CODEPAGE_863 is not set
# CONFIG_NLS_CODEPAGE_864 is not set
# CONFIG_NLS_CODEPAGE_865 is not set
# CONFIG_NLS_CODEPAGE_866 is not set
# CONFIG_NLS_CODEPAGE_869 is not set
# CONFIG_NLS_CODEPAGE_936 is not set
# CONFIG_NLS_CODEPAGE_950 is not set
# CONFIG_NLS_CODEPAGE_932 is not set
# CONFIG_NLS_CODEPAGE_949 is not set
# CONFIG_NLS_CODEPAGE_874 is not set
# CONFIG_NLS_ISO8859_8 is not set
# CONFIG_NLS_CODEPAGE_1250 is not set
# CONFIG_NLS_CODEPAGE_1251 is not set
# CONFIG_NLS_ASCII is not set
# CONFIG_NLS_ISO8859_1 is not set
# CONFIG_NLS_ISO8859_2 is not set
# CONFIG_NLS_ISO8859_3 is not set
# CONFIG_NLS_ISO8859_4 is not set
# CONFIG_NLS_ISO8859_5 is not set
# CONFIG_NLS_ISO8859_6 is not set
# CONFIG_NLS_ISO8859_7 is not set
# CONFIG_NLS_ISO8859_9 is not set
# CONFIG_NLS_ISO8859_13 is not set
# CONFIG_NLS_ISO8859_14 is not set
# CONFIG_NLS_ISO8859_15 is not set
# CONFIG_NLS_KOI8_R is not set
# CONFIG_NLS_KOI8_U is not set
# CONFIG_NLS_MAC_ROMAN is not set
# CONFIG_NLS_MAC_CELTIC is not set
# CONFIG_NLS_MAC_CENTEURO is not set
# CONFIG_NLS_MAC_CROATIAN is not set
# CONFIG_NLS_MAC_CYRILLIC is not set
# CONFIG_NLS_MAC_GAELIC is not set
# CONFIG_NLS_MAC_GREEK is not set
# CONFIG_NLS_MAC_ICELAND is not set
# CONFIG_NLS_MAC_INUIT is not set
# CONFIG_NLS_MAC_ROMANIAN is not set
# CONFIG_NLS_MAC_TURKISH is not set
# CONFIG_NLS_UTF8 is not set
# CONFIG_UNICODE is not set
CONFIG_IO_WQ=y
# end of File systems
#
# Security options
#
# CONFIG_KEYS is not set
# CONFIG_SECURITY_DMESG_RESTRICT is not set
# CONFIG_SECURITY is not set
# CONFIG_SECURITYFS is not set
CONFIG_HAVE_HARDENED_USERCOPY_ALLOCATOR=y
# CONFIG_HARDENED_USERCOPY is not set
# CONFIG_STATIC_USERMODEHELPER is not set
CONFIG_DEFAULT_SECURITY_DAC=y
CONFIG_LSM="landlock,lockdown,yama,loadpin,safesetid,integrity,bpf"
#
# Kernel hardening options
#
#
# Memory initialization
#
CONFIG_INIT_STACK_NONE=y
# CONFIG_GCC_PLUGIN_STRUCTLEAK_USER is not set
# CONFIG_GCC_PLUGIN_STRUCTLEAK_BYREF is not set
# CONFIG_GCC_PLUGIN_STRUCTLEAK_BYREF_ALL is not set
# CONFIG_INIT_ON_ALLOC_DEFAULT_ON is not set
# CONFIG_INIT_ON_FREE_DEFAULT_ON is not set
CONFIG_CC_HAS_ZERO_CALL_USED_REGS=y
# CONFIG_ZERO_CALL_USED_REGS is not set
# end of Memory initialization
CONFIG_RANDSTRUCT_NONE=y
# CONFIG_RANDSTRUCT_FULL is not set
# CONFIG_RANDSTRUCT_PERFORMANCE is not set
# end of Kernel hardening options
# end of Security options
CONFIG_CRYPTO=y
#
# Crypto core or helper
#
CONFIG_CRYPTO_ALGAPI=y
CONFIG_CRYPTO_ALGAPI2=y
CONFIG_CRYPTO_HASH=y
CONFIG_CRYPTO_HASH2=y
# CONFIG_CRYPTO_MANAGER is not set
# CONFIG_CRYPTO_USER is not set
CONFIG_CRYPTO_MANAGER_DISABLE_TESTS=y
# CONFIG_CRYPTO_NULL is not set
# CONFIG_CRYPTO_CRYPTD is not set
# CONFIG_CRYPTO_AUTHENC is not set
# CONFIG_CRYPTO_TEST is not set
#
# Public-key cryptography
#
# CONFIG_CRYPTO_RSA is not set
# CONFIG_CRYPTO_DH is not set
# CONFIG_CRYPTO_ECDH is not set
# CONFIG_CRYPTO_ECDSA is not set
# CONFIG_CRYPTO_ECRDSA is not set
# CONFIG_CRYPTO_SM2 is not set
# CONFIG_CRYPTO_CURVE25519 is not set
#
# Authenticated Encryption with Associated Data
#
# CONFIG_CRYPTO_CCM is not set
# CONFIG_CRYPTO_GCM is not set
# CONFIG_CRYPTO_CHACHA20POLY1305 is not set
# CONFIG_CRYPTO_AEGIS128 is not set
# CONFIG_CRYPTO_SEQIV is not set
# CONFIG_CRYPTO_ECHAINIV is not set
#
# Block modes
#
# CONFIG_CRYPTO_CBC is not set
# CONFIG_CRYPTO_CFB is not set
# CONFIG_CRYPTO_CTR is not set
# CONFIG_CRYPTO_CTS is not set
# CONFIG_CRYPTO_ECB is not set
# CONFIG_CRYPTO_LRW is not set
# CONFIG_CRYPTO_OFB is not set
# CONFIG_CRYPTO_PCBC is not set
# CONFIG_CRYPTO_XTS is not set
# CONFIG_CRYPTO_KEYWRAP is not set
# CONFIG_CRYPTO_ADIANTUM is not set
# CONFIG_CRYPTO_HCTR2 is not set
# CONFIG_CRYPTO_ESSIV is not set
#
# Hash modes
#
# CONFIG_CRYPTO_CMAC is not set
# CONFIG_CRYPTO_HMAC is not set
# CONFIG_CRYPTO_XCBC is not set
# CONFIG_CRYPTO_VMAC is not set
#
# Digest
#
CONFIG_CRYPTO_CRC32C=y
# CONFIG_CRYPTO_CRC32 is not set
# CONFIG_CRYPTO_XXHASH is not set
# CONFIG_CRYPTO_BLAKE2B is not set
# CONFIG_CRYPTO_CRCT10DIF is not set
# CONFIG_CRYPTO_GHASH is not set
# CONFIG_CRYPTO_POLY1305 is not set
# CONFIG_CRYPTO_MD4 is not set
# CONFIG_CRYPTO_MD5 is not set
# CONFIG_CRYPTO_MICHAEL_MIC is not set
# CONFIG_CRYPTO_RMD160 is not set
# CONFIG_CRYPTO_SHA1 is not set
# CONFIG_CRYPTO_SHA256 is not set
# CONFIG_CRYPTO_SHA512 is not set
# CONFIG_CRYPTO_SHA3 is not set
# CONFIG_CRYPTO_SM3_GENERIC is not set
# CONFIG_CRYPTO_STREEBOG is not set
# CONFIG_CRYPTO_WP512 is not set
#
# Ciphers
#
# CONFIG_CRYPTO_AES is not set
# CONFIG_CRYPTO_AES_TI is not set
# CONFIG_CRYPTO_BLOWFISH is not set
# CONFIG_CRYPTO_CAMELLIA is not set
# CONFIG_CRYPTO_CAST5 is not set
# CONFIG_CRYPTO_CAST6 is not set
# CONFIG_CRYPTO_DES is not set
# CONFIG_CRYPTO_FCRYPT is not set
# CONFIG_CRYPTO_CHACHA20 is not set
# CONFIG_CRYPTO_ARIA is not set
# CONFIG_CRYPTO_SERPENT is not set
# CONFIG_CRYPTO_SM4_GENERIC is not set
# CONFIG_CRYPTO_TWOFISH is not set
# CONFIG_CRYPTO_TWOFISH_586 is not set
#
# Compression
#
# CONFIG_CRYPTO_DEFLATE is not set
# CONFIG_CRYPTO_LZO is not set
# CONFIG_CRYPTO_842 is not set
# CONFIG_CRYPTO_LZ4 is not set
# CONFIG_CRYPTO_LZ4HC is not set
# CONFIG_CRYPTO_ZSTD is not set
#
# Random Number Generation
#
# CONFIG_CRYPTO_ANSI_CPRNG is not set
# CONFIG_CRYPTO_DRBG_MENU is not set
# CONFIG_CRYPTO_JITTERENTROPY is not set
# CONFIG_CRYPTO_USER_API_HASH is not set
# CONFIG_CRYPTO_USER_API_SKCIPHER is not set
# CONFIG_CRYPTO_USER_API_RNG is not set
# CONFIG_CRYPTO_USER_API_AEAD is not set
CONFIG_CRYPTO_HW=y
#
# Certificates for signature checking
#
# end of Certificates for signature checking
#
# Library routines
#
# CONFIG_PACKING is not set
CONFIG_BITREVERSE=y
CONFIG_ARCH_HAS_STRNCPY_FROM_USER=y
CONFIG_ARCH_HAS_STRNLEN_USER=y
CONFIG_GENERIC_NET_UTILS=y
# CONFIG_CORDIC is not set
# CONFIG_PRIME_NUMBERS is not set
#
# Crypto library routines
#
CONFIG_CRYPTO_LIB_BLAKE2S_GENERIC=y
# CONFIG_CRYPTO_LIB_CHACHA is not set
# CONFIG_CRYPTO_LIB_CURVE25519 is not set
CONFIG_CRYPTO_LIB_POLY1305_RSIZE=1
# CONFIG_CRYPTO_LIB_POLY1305 is not set
# CONFIG_CRYPTO_LIB_CHACHA20POLY1305 is not set
CONFIG_CRYPTO_LIB_SHA1=y
# end of Crypto library routines
CONFIG_LIB_MEMNEQ=y
# CONFIG_CRC_CCITT is not set
CONFIG_CRC16=y
# CONFIG_CRC_T10DIF is not set
# CONFIG_CRC64_ROCKSOFT is not set
# CONFIG_CRC_ITU_T is not set
CONFIG_CRC32=y
# CONFIG_CRC32_SELFTEST is not set
CONFIG_CRC32_SLICEBY8=y
# CONFIG_CRC32_SLICEBY4 is not set
# CONFIG_CRC32_SARWATE is not set
# CONFIG_CRC32_BIT is not set
# CONFIG_CRC64 is not set
# CONFIG_CRC4 is not set
# CONFIG_CRC7 is not set
# CONFIG_LIBCRC32C is not set
# CONFIG_CRC8 is not set
# CONFIG_RANDOM32_SELFTEST is not set
# CONFIG_XZ_DEC is not set
CONFIG_NO_DMA=y
# CONFIG_DMA_API_DEBUG is not set
CONFIG_DQL=y
CONFIG_NLATTR=y
# CONFIG_IRQ_POLL is not set
CONFIG_SBITMAP=y
# end of Library routines
#
# Kernel hacking
#
#
# printk and dmesg options
#
# CONFIG_PRINTK_TIME is not set
# CONFIG_PRINTK_CALLER is not set
# CONFIG_STACKTRACE_BUILD_ID is not set
CONFIG_CONSOLE_LOGLEVEL_DEFAULT=7
CONFIG_CONSOLE_LOGLEVEL_QUIET=4
CONFIG_MESSAGE_LOGLEVEL_DEFAULT=4
# CONFIG_BOOT_PRINTK_DELAY is not set
# CONFIG_DYNAMIC_DEBUG is not set
# CONFIG_DYNAMIC_DEBUG_CORE is not set
CONFIG_SYMBOLIC_ERRNAME=y
CONFIG_DEBUG_BUGVERBOSE=y
# end of printk and dmesg options
CONFIG_DEBUG_KERNEL=y
CONFIG_DEBUG_MISC=y
#
# Compile-time checks and compiler options
#
CONFIG_DEBUG_INFO_NONE=y
# CONFIG_DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT is not set
# CONFIG_DEBUG_INFO_DWARF4 is not set
# CONFIG_DEBUG_INFO_DWARF5 is not set
CONFIG_FRAME_WARN=1024
# CONFIG_STRIP_ASM_SYMS is not set
# CONFIG_READABLE_ASM is not set
CONFIG_DEBUG_SECTION_MISMATCH=y
CONFIG_SECTION_MISMATCH_WARN_ONLY=y
# CONFIG_FRAME_POINTER is not set
# CONFIG_DEBUG_FORCE_WEAK_PER_CPU is not set
# end of Compile-time checks and compiler options
#
# Generic Kernel Debugging Instruments
#
CONFIG_MAGIC_SYSRQ_DEFAULT_ENABLE=0x1
CONFIG_MAGIC_SYSRQ_SERIAL=y
CONFIG_MAGIC_SYSRQ_SERIAL_SEQUENCE=""
# CONFIG_DEBUG_FS is not set
# CONFIG_UBSAN is not set
CONFIG_HAVE_KCSAN_COMPILER=y
# end of Generic Kernel Debugging Instruments
#
# Networking Debugging
#
# CONFIG_NET_DEV_REFCNT_TRACKER is not set
# CONFIG_NET_NS_REFCNT_TRACKER is not set
# CONFIG_DEBUG_NET is not set
# end of Networking Debugging
#
# Memory Debugging
#
# CONFIG_PAGE_EXTENSION is not set
# CONFIG_DEBUG_PAGEALLOC is not set
# CONFIG_DEBUG_SLAB is not set
# CONFIG_PAGE_OWNER is not set
# CONFIG_PAGE_POISONING is not set
# CONFIG_DEBUG_OBJECTS is not set
CONFIG_HAVE_DEBUG_KMEMLEAK=y
# CONFIG_DEBUG_KMEMLEAK is not set
# CONFIG_DEBUG_STACK_USAGE is not set
# CONFIG_SCHED_STACK_END_CHECK is not set
# CONFIG_DEBUG_VM is not set
CONFIG_DEBUG_MEMORY_INIT=y
CONFIG_CC_HAS_KASAN_GENERIC=y
CONFIG_CC_HAS_WORKING_NOSANITIZE_ADDRESS=y
# end of Memory Debugging
# CONFIG_DEBUG_SHIRQ is not set
#
# Debug Oops, Lockups and Hangs
#
# CONFIG_PANIC_ON_OOPS is not set
CONFIG_PANIC_ON_OOPS_VALUE=0
CONFIG_PANIC_TIMEOUT=0
# CONFIG_SOFTLOCKUP_DETECTOR is not set
# CONFIG_DETECT_HUNG_TASK is not set
# CONFIG_WQ_WATCHDOG is not set
# CONFIG_TEST_LOCKUP is not set
# end of Debug Oops, Lockups and Hangs
#
# Scheduler Debugging
#
CONFIG_SCHED_DEBUG=y
# CONFIG_SCHEDSTATS is not set
# end of Scheduler Debugging
# CONFIG_DEBUG_TIMEKEEPING is not set
#
# Lock Debugging (spinlocks, mutexes, etc...)
#
CONFIG_LOCK_DEBUGGING_SUPPORT=y
# CONFIG_PROVE_LOCKING is not set
# CONFIG_LOCK_STAT is not set
# CONFIG_DEBUG_RT_MUTEXES is not set
# CONFIG_DEBUG_SPINLOCK is not set
# CONFIG_DEBUG_MUTEXES is not set
# CONFIG_DEBUG_WW_MUTEX_SLOWPATH is not set
# CONFIG_DEBUG_RWSEMS is not set
# CONFIG_DEBUG_LOCK_ALLOC is not set
# CONFIG_DEBUG_LOCKING_API_SELFTESTS is not set
# CONFIG_LOCK_TORTURE_TEST is not set
# CONFIG_WW_MUTEX_SELFTEST is not set
# CONFIG_SCF_TORTURE_TEST is not set
# end of Lock Debugging (spinlocks, mutexes, etc...)
# CONFIG_DEBUG_IRQFLAGS is not set
CONFIG_STACKTRACE=y
# CONFIG_WARN_ALL_UNSEEDED_RANDOM is not set
# CONFIG_DEBUG_KOBJECT is not set
CONFIG_HAVE_DEBUG_BUGVERBOSE=y
#
# Debug kernel data structures
#
# CONFIG_DEBUG_LIST is not set
# CONFIG_DEBUG_PLIST is not set
# CONFIG_DEBUG_SG is not set
# CONFIG_DEBUG_NOTIFIERS is not set
# CONFIG_BUG_ON_DATA_CORRUPTION is not set
# end of Debug kernel data structures
# CONFIG_DEBUG_CREDENTIALS is not set
#
# RCU Debugging
#
# CONFIG_RCU_SCALE_TEST is not set
# CONFIG_RCU_TORTURE_TEST is not set
# CONFIG_RCU_REF_SCALE_TEST is not set
# CONFIG_RCU_TRACE is not set
# CONFIG_RCU_EQS_DEBUG is not set
# end of RCU Debugging
# CONFIG_DEBUG_WQ_FORCE_RR_CPU is not set
CONFIG_TRACING_SUPPORT=y
CONFIG_FTRACE=y
# CONFIG_IRQSOFF_TRACER is not set
# CONFIG_SCHED_TRACER is not set
# CONFIG_HWLAT_TRACER is not set
# CONFIG_OSNOISE_TRACER is not set
# CONFIG_TIMERLAT_TRACER is not set
# CONFIG_ENABLE_DEFAULT_TRACERS is not set
# CONFIG_TRACER_SNAPSHOT is not set
CONFIG_BRANCH_PROFILE_NONE=y
# CONFIG_PROFILE_ANNOTATED_BRANCHES is not set
# CONFIG_PROFILE_ALL_BRANCHES is not set
# CONFIG_BLK_DEV_IO_TRACE is not set
# CONFIG_SYNTH_EVENTS is not set
# CONFIG_TRACEPOINT_BENCHMARK is not set
# CONFIG_PREEMPTIRQ_DELAY_TEST is not set
# CONFIG_SAMPLES is not set
#
# um Debugging
#
CONFIG_EARLY_PRINTK=y
# end of um Debugging
#
# Kernel Testing and Coverage
#
# CONFIG_KUNIT is not set
# CONFIG_NOTIFIER_ERROR_INJECTION is not set
# CONFIG_FAULT_INJECTION is not set
CONFIG_ARCH_HAS_KCOV=y
CONFIG_CC_HAS_SANCOV_TRACE_PC=y
# CONFIG_KCOV is not set
CONFIG_RUNTIME_TESTING_MENU=y
# CONFIG_TEST_MIN_HEAP is not set
# CONFIG_TEST_DIV64 is not set
# CONFIG_BACKTRACE_SELF_TEST is not set
# CONFIG_TEST_REF_TRACKER is not set
# CONFIG_RBTREE_TEST is not set
# CONFIG_REED_SOLOMON_TEST is not set
# CONFIG_INTERVAL_TREE_TEST is not set
# CONFIG_PERCPU_TEST is not set
# CONFIG_ATOMIC64_SELFTEST is not set
# CONFIG_TEST_HEXDUMP is not set
# CONFIG_STRING_SELFTEST is not set
# CONFIG_TEST_STRING_HELPERS is not set
# CONFIG_TEST_STRSCPY is not set
# CONFIG_TEST_KSTRTOX is not set
# CONFIG_TEST_PRINTF is not set
# CONFIG_TEST_SCANF is not set
# CONFIG_TEST_BITMAP is not set
# CONFIG_TEST_UUID is not set
# CONFIG_TEST_XARRAY is not set
# CONFIG_TEST_RHASHTABLE is not set
# CONFIG_TEST_SIPHASH is not set
# CONFIG_TEST_IDA is not set
# CONFIG_TEST_LKM is not set
# CONFIG_TEST_BITOPS is not set
# CONFIG_TEST_VMALLOC is not set
# CONFIG_TEST_USER_COPY is not set
# CONFIG_TEST_BPF is not set
# CONFIG_TEST_BLACKHOLE_DEV is not set
# CONFIG_FIND_BIT_BENCHMARK is not set
# CONFIG_TEST_FIRMWARE is not set
# CONFIG_TEST_SYSCTL is not set
# CONFIG_TEST_UDELAY is not set
# CONFIG_TEST_STATIC_KEYS is not set
# CONFIG_TEST_KMOD is not set
# CONFIG_TEST_MEMCAT_P is not set
# CONFIG_TEST_MEMINIT is not set
# CONFIG_TEST_FREE_PAGES is not set
# end of Kernel Testing and Coverage
# end of Kernel hacking
^ permalink raw reply [flat|nested] 30+ messages in thread
* Re: [PATCH v3 2/7] kbuild: list sub-directories in ./Kbuild
2022-09-24 18:19 ` [PATCH v3 2/7] kbuild: list sub-directories in ./Kbuild Masahiro Yamada
2022-09-24 19:37 ` kernel test robot
@ 2022-09-24 20:27 ` kernel test robot
2022-09-25 0:28 ` Masahiro Yamada
2022-09-28 19:30 ` Nicolas Schier
2 siblings, 1 reply; 30+ messages in thread
From: kernel test robot @ 2022-09-24 20:27 UTC (permalink / raw)
To: Masahiro Yamada, linux-kbuild
Cc: kbuild-all, linux-kernel, linux-arch, Nick Desaulniers,
Nathan Chancellor, Masahiro Yamada
[-- Attachment #1: Type: text/plain, Size: 2399 bytes --]
Hi Masahiro,
I love your patch! Perhaps something to improve:
[auto build test WARNING on masahiroy-kbuild/for-next]
[cannot apply to arm64/for-next/core gerg-m68knommu/for-next geert-m68k/for-next deller-parisc/for-next powerpc/next s390/features tip/x86/core linus/master v6.0-rc6 next-20220923]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Masahiro-Yamada/kbuild-various-cleanups/20220925-022150
base: https://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild.git for-next
config: um-x86_64_defconfig
compiler: gcc-11 (Debian 11.3.0-5) 11.3.0
reproduce (this is a W=1 build):
# https://github.com/intel-lab-lkp/linux/commit/d721cc5614aaa17b2965db04e9319d4ef5f7eaf7
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Masahiro-Yamada/kbuild-various-cleanups/20220925-022150
git checkout d721cc5614aaa17b2965db04e9319d4ef5f7eaf7
# save the config file
mkdir build_dir && cp config build_dir/.config
make W=1 O=build_dir ARCH=um SUBARCH=x86_64 SHELL=/bin/bash
If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
>> /usr/bin/ld: warning: ./arch/x86/um/vdso/vdso.o: missing .note.GNU-stack section implies executable stack
/usr/bin/ld: NOTE: This behaviour is deprecated and will be removed in a future version of the linker
/usr/bin/ld: warning: .tmp_vmlinux.kallsyms1 has a LOAD segment with RWX permissions
/usr/bin/ld: warning: .tmp_vmlinux.kallsyms1.o: missing .note.GNU-stack section implies executable stack
/usr/bin/ld: NOTE: This behaviour is deprecated and will be removed in a future version of the linker
/usr/bin/ld: warning: .tmp_vmlinux.kallsyms2 has a LOAD segment with RWX permissions
/usr/bin/ld: warning: .tmp_vmlinux.kallsyms2.o: missing .note.GNU-stack section implies executable stack
/usr/bin/ld: NOTE: This behaviour is deprecated and will be removed in a future version of the linker
/usr/bin/ld: warning: vmlinux has a LOAD segment with RWX permissions
--
0-DAY CI Kernel Test Service
https://01.org/lkp
[-- Attachment #2: config --]
[-- Type: text/plain, Size: 40653 bytes --]
#
# Automatically generated file; DO NOT EDIT.
# Linux/um 6.0.0-rc5 Kernel Configuration
#
CONFIG_CC_VERSION_TEXT="gcc-11 (Debian 11.3.0-5) 11.3.0"
CONFIG_CC_IS_GCC=y
CONFIG_GCC_VERSION=110300
CONFIG_CLANG_VERSION=0
CONFIG_AS_IS_GNU=y
CONFIG_AS_VERSION=23890
CONFIG_LD_IS_BFD=y
CONFIG_LD_VERSION=23890
CONFIG_LLD_VERSION=0
CONFIG_CC_CAN_LINK=y
CONFIG_CC_CAN_LINK_STATIC=y
CONFIG_CC_HAS_ASM_GOTO_OUTPUT=y
CONFIG_CC_HAS_ASM_INLINE=y
CONFIG_CC_HAS_NO_PROFILE_FN_ATTR=y
CONFIG_PAHOLE_VERSION=123
CONFIG_IRQ_WORK=y
#
# General setup
#
CONFIG_BROKEN_ON_SMP=y
CONFIG_INIT_ENV_ARG_LIMIT=128
# CONFIG_WERROR is not set
CONFIG_LOCALVERSION=""
CONFIG_LOCALVERSION_AUTO=y
CONFIG_BUILD_SALT=""
CONFIG_DEFAULT_INIT=""
CONFIG_DEFAULT_HOSTNAME="(none)"
CONFIG_SYSVIPC=y
CONFIG_SYSVIPC_SYSCTL=y
CONFIG_POSIX_MQUEUE=y
CONFIG_POSIX_MQUEUE_SYSCTL=y
# CONFIG_WATCH_QUEUE is not set
CONFIG_CROSS_MEMORY_ATTACH=y
# CONFIG_USELIB is not set
# CONFIG_AUDIT is not set
CONFIG_HAVE_ARCH_AUDITSYSCALL=y
#
# IRQ subsystem
#
CONFIG_GENERIC_IRQ_SHOW=y
# end of IRQ subsystem
CONFIG_GENERIC_CLOCKEVENTS=y
#
# Timers subsystem
#
CONFIG_TICK_ONESHOT=y
CONFIG_NO_HZ_COMMON=y
# CONFIG_HZ_PERIODIC is not set
CONFIG_NO_HZ_IDLE=y
CONFIG_NO_HZ=y
CONFIG_HIGH_RES_TIMERS=y
# end of Timers subsystem
CONFIG_BPF=y
#
# BPF subsystem
#
# CONFIG_BPF_SYSCALL is not set
# end of BPF subsystem
CONFIG_PREEMPT_NONE_BUILD=y
CONFIG_PREEMPT_NONE=y
#
# CPU/Task time and stats accounting
#
CONFIG_TICK_CPU_ACCOUNTING=y
CONFIG_BSD_PROCESS_ACCT=y
# CONFIG_BSD_PROCESS_ACCT_V3 is not set
# CONFIG_TASKSTATS is not set
# CONFIG_PSI is not set
# end of CPU/Task time and stats accounting
#
# RCU Subsystem
#
CONFIG_TINY_RCU=y
# CONFIG_RCU_EXPERT is not set
CONFIG_SRCU=y
CONFIG_TINY_SRCU=y
# end of RCU Subsystem
CONFIG_IKCONFIG=y
CONFIG_IKCONFIG_PROC=y
# CONFIG_IKHEADERS is not set
CONFIG_LOG_BUF_SHIFT=14
CONFIG_PRINTK_SAFE_LOG_BUF_SHIFT=13
#
# Scheduler features
#
# end of Scheduler features
CONFIG_CC_HAS_INT128=y
CONFIG_CC_IMPLICIT_FALLTHROUGH="-Wimplicit-fallthrough=5"
CONFIG_GCC12_NO_ARRAY_BOUNDS=y
CONFIG_CGROUPS=y
# CONFIG_CGROUP_FAVOR_DYNMODS is not set
# CONFIG_MEMCG is not set
CONFIG_BLK_CGROUP=y
CONFIG_CGROUP_SCHED=y
CONFIG_FAIR_GROUP_SCHED=y
# CONFIG_CFS_BANDWIDTH is not set
# CONFIG_RT_GROUP_SCHED is not set
# CONFIG_CGROUP_PIDS is not set
# CONFIG_CGROUP_RDMA is not set
CONFIG_CGROUP_FREEZER=y
CONFIG_CGROUP_DEVICE=y
CONFIG_CGROUP_CPUACCT=y
# CONFIG_CGROUP_MISC is not set
# CONFIG_CGROUP_DEBUG is not set
CONFIG_NAMESPACES=y
CONFIG_UTS_NS=y
CONFIG_IPC_NS=y
# CONFIG_USER_NS is not set
# CONFIG_PID_NS is not set
CONFIG_NET_NS=y
# CONFIG_CHECKPOINT_RESTORE is not set
# CONFIG_SCHED_AUTOGROUP is not set
CONFIG_SYSFS_DEPRECATED=y
# CONFIG_SYSFS_DEPRECATED_V2 is not set
# CONFIG_RELAY is not set
# CONFIG_BLK_DEV_INITRD is not set
# CONFIG_BOOT_CONFIG is not set
CONFIG_INITRAMFS_PRESERVE_MTIME=y
# CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE is not set
CONFIG_CC_OPTIMIZE_FOR_SIZE=y
CONFIG_SYSCTL=y
CONFIG_HAVE_UID16=y
# CONFIG_EXPERT is not set
CONFIG_UID16=y
CONFIG_MULTIUSER=y
CONFIG_SYSFS_SYSCALL=y
CONFIG_FHANDLE=y
CONFIG_POSIX_TIMERS=y
CONFIG_PRINTK=y
CONFIG_BUG=y
CONFIG_ELF_CORE=y
CONFIG_BASE_FULL=y
CONFIG_FUTEX=y
CONFIG_FUTEX_PI=y
CONFIG_EPOLL=y
CONFIG_SIGNALFD=y
CONFIG_TIMERFD=y
CONFIG_EVENTFD=y
CONFIG_SHMEM=y
CONFIG_AIO=y
CONFIG_IO_URING=y
CONFIG_ADVISE_SYSCALLS=y
CONFIG_MEMBARRIER=y
CONFIG_KALLSYMS=y
# CONFIG_KALLSYMS_ALL is not set
CONFIG_KALLSYMS_BASE_RELATIVE=y
# CONFIG_EMBEDDED is not set
#
# Kernel Performance Events And Counters
#
# end of Kernel Performance Events And Counters
# CONFIG_PROFILING is not set
# end of General setup
#
# UML-specific options
#
CONFIG_UML=y
CONFIG_MMU=y
CONFIG_NO_IOMEM=y
CONFIG_NO_IOPORT_MAP=y
CONFIG_LOCKDEP_SUPPORT=y
CONFIG_STACKTRACE_SUPPORT=y
CONFIG_GENERIC_CALIBRATE_DELAY=y
CONFIG_HZ=100
CONFIG_NR_CPUS=1
CONFIG_ARCH_HAS_CACHE_LINE_SIZE=y
#
# Host processor type and features
#
# CONFIG_MK8 is not set
# CONFIG_MPSC is not set
# CONFIG_MCORE2 is not set
# CONFIG_MATOM is not set
CONFIG_GENERIC_CPU=y
CONFIG_X86_INTERNODE_CACHE_SHIFT=6
CONFIG_X86_L1_CACHE_SHIFT=6
CONFIG_X86_TSC=y
CONFIG_X86_CMPXCHG64=y
CONFIG_X86_CMOV=y
CONFIG_X86_MINIMUM_CPU_FAMILY=64
CONFIG_IA32_FEAT_CTL=y
CONFIG_CPU_SUP_INTEL=y
CONFIG_CPU_SUP_AMD=y
CONFIG_CPU_SUP_HYGON=y
CONFIG_CPU_SUP_CENTAUR=y
CONFIG_CPU_SUP_ZHAOXIN=y
# end of Host processor type and features
CONFIG_UML_X86=y
CONFIG_64BIT=y
CONFIG_X86_64=y
CONFIG_3_LEVEL_PGTABLES=y
CONFIG_GENERIC_HWEIGHT=y
# CONFIG_STATIC_LINK is not set
CONFIG_LD_SCRIPT_DYN=y
CONFIG_LD_SCRIPT_DYN_RPATH=y
CONFIG_HOSTFS=y
CONFIG_MCONSOLE=y
CONFIG_MAGIC_SYSRQ=y
CONFIG_KERNEL_STACK_ORDER=2
# CONFIG_MMAPPER is not set
CONFIG_PGTABLE_LEVELS=3
# CONFIG_UML_TIME_TRAVEL_SUPPORT is not set
# end of UML-specific options
#
# UML Character Devices
#
CONFIG_STDERR_CONSOLE=y
CONFIG_SSL=y
CONFIG_NULL_CHAN=y
CONFIG_PORT_CHAN=y
CONFIG_PTY_CHAN=y
CONFIG_TTY_CHAN=y
CONFIG_XTERM_CHAN=y
CONFIG_XTERM_CHAN_DEFAULT_EMULATOR="xterm"
CONFIG_CON_ZERO_CHAN="fd:0,fd:1"
CONFIG_CON_CHAN="pts"
CONFIG_SSL_CHAN="pts"
CONFIG_UML_SOUND=m
CONFIG_SOUND=m
CONFIG_SOUND_OSS_CORE=y
CONFIG_HOSTAUDIO=m
# end of UML Character Devices
#
# UML Network Devices
#
CONFIG_UML_NET=y
CONFIG_UML_NET_ETHERTAP=y
CONFIG_UML_NET_TUNTAP=y
CONFIG_UML_NET_SLIP=y
CONFIG_UML_NET_DAEMON=y
CONFIG_UML_NET_DAEMON_DEFAULT_SOCK="/tmp/uml.ctl"
# CONFIG_UML_NET_VECTOR is not set
# CONFIG_UML_NET_VDE is not set
CONFIG_UML_NET_MCAST=y
# CONFIG_UML_NET_PCAP is not set
CONFIG_UML_NET_SLIRP=y
# end of UML Network Devices
# CONFIG_VIRTIO_UML is not set
CONFIG_ARCH_SUSPEND_POSSIBLE=y
CONFIG_SUSPEND=y
CONFIG_SUSPEND_FREEZER=y
CONFIG_PM_SLEEP=y
# CONFIG_PM_AUTOSLEEP is not set
# CONFIG_PM_USERSPACE_AUTOSLEEP is not set
# CONFIG_PM_WAKELOCKS is not set
CONFIG_PM=y
# CONFIG_PM_DEBUG is not set
# CONFIG_WQ_POWER_EFFICIENT_DEFAULT is not set
#
# General architecture-dependent options
#
CONFIG_CRASH_CORE=y
CONFIG_HAVE_64BIT_ALIGNED_ACCESS=y
CONFIG_TRACE_IRQFLAGS_SUPPORT=y
CONFIG_HAVE_ASM_MODVERSIONS=y
CONFIG_HAVE_ARCH_SECCOMP=y
CONFIG_HAVE_ARCH_SECCOMP_FILTER=y
CONFIG_SECCOMP=y
CONFIG_SECCOMP_FILTER=y
# CONFIG_SECCOMP_CACHE_DEBUG is not set
CONFIG_LTO_NONE=y
CONFIG_HAVE_VIRT_CPU_ACCOUNTING_GEN=y
CONFIG_MODULES_USE_ELF_RELA=y
CONFIG_PAGE_SIZE_LESS_THAN_64KB=y
CONFIG_PAGE_SIZE_LESS_THAN_256KB=y
# CONFIG_COMPAT_32BIT_TIME is not set
CONFIG_ARCH_NO_PREEMPT=y
CONFIG_ARCH_EPHEMERAL_INODES=y
CONFIG_HAVE_ARCH_VMAP_STACK=y
CONFIG_VMAP_STACK=y
#
# GCOV-based kernel profiling
#
CONFIG_ARCH_HAS_GCOV_PROFILE_ALL=y
# end of GCOV-based kernel profiling
CONFIG_HAVE_GCC_PLUGINS=y
CONFIG_GCC_PLUGINS=y
# CONFIG_GCC_PLUGIN_LATENT_ENTROPY is not set
# end of General architecture-dependent options
CONFIG_RT_MUTEXES=y
CONFIG_BASE_SMALL=0
CONFIG_MODULES=y
# CONFIG_MODULE_FORCE_LOAD is not set
CONFIG_MODULE_UNLOAD=y
# CONFIG_MODULE_FORCE_UNLOAD is not set
# CONFIG_MODULE_UNLOAD_TAINT_TRACKING is not set
# CONFIG_MODVERSIONS is not set
# CONFIG_MODULE_SRCVERSION_ALL is not set
# CONFIG_MODULE_SIG is not set
CONFIG_MODULE_COMPRESS_NONE=y
# CONFIG_MODULE_COMPRESS_GZIP is not set
# CONFIG_MODULE_COMPRESS_XZ is not set
# CONFIG_MODULE_COMPRESS_ZSTD is not set
# CONFIG_MODULE_ALLOW_MISSING_NAMESPACE_IMPORTS is not set
CONFIG_MODPROBE_PATH="/sbin/modprobe"
CONFIG_BLOCK=y
CONFIG_BLOCK_LEGACY_AUTOLOAD=y
CONFIG_BLK_ICQ=y
# CONFIG_BLK_DEV_BSGLIB is not set
# CONFIG_BLK_DEV_INTEGRITY is not set
# CONFIG_BLK_DEV_ZONED is not set
# CONFIG_BLK_DEV_THROTTLING is not set
# CONFIG_BLK_WBT is not set
# CONFIG_BLK_CGROUP_IOLATENCY is not set
# CONFIG_BLK_CGROUP_IOCOST is not set
# CONFIG_BLK_CGROUP_IOPRIO is not set
# CONFIG_BLK_SED_OPAL is not set
# CONFIG_BLK_INLINE_ENCRYPTION is not set
#
# Partition Types
#
# CONFIG_PARTITION_ADVANCED is not set
CONFIG_MSDOS_PARTITION=y
CONFIG_EFI_PARTITION=y
# end of Partition Types
CONFIG_BLK_PM=y
#
# IO Schedulers
#
CONFIG_MQ_IOSCHED_DEADLINE=y
CONFIG_MQ_IOSCHED_KYBER=y
CONFIG_IOSCHED_BFQ=m
# CONFIG_BFQ_GROUP_IOSCHED is not set
# end of IO Schedulers
CONFIG_INLINE_SPIN_UNLOCK_IRQ=y
CONFIG_INLINE_READ_UNLOCK=y
CONFIG_INLINE_READ_UNLOCK_IRQ=y
CONFIG_INLINE_WRITE_UNLOCK=y
CONFIG_INLINE_WRITE_UNLOCK_IRQ=y
CONFIG_FREEZER=y
#
# Executable file formats
#
CONFIG_BINFMT_ELF=y
CONFIG_ELFCORE=y
CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS=y
CONFIG_BINFMT_SCRIPT=y
CONFIG_BINFMT_MISC=m
CONFIG_COREDUMP=y
# end of Executable file formats
#
# Memory Management options
#
CONFIG_SWAP=y
# CONFIG_ZSWAP is not set
#
# SLAB allocator options
#
CONFIG_SLAB=y
# CONFIG_SLUB is not set
CONFIG_SLAB_MERGE_DEFAULT=y
# CONFIG_SLAB_FREELIST_RANDOM is not set
# CONFIG_SLAB_FREELIST_HARDENED is not set
# end of SLAB allocator options
# CONFIG_SHUFFLE_PAGE_ALLOCATOR is not set
CONFIG_COMPAT_BRK=y
CONFIG_FLATMEM=y
CONFIG_SPLIT_PTLOCK_CPUS=4
# CONFIG_COMPACTION is not set
# CONFIG_PAGE_REPORTING is not set
CONFIG_PHYS_ADDR_T_64BIT=y
# CONFIG_KSM is not set
CONFIG_DEFAULT_MMAP_MIN_ADDR=4096
CONFIG_NEED_PER_CPU_KM=y
# CONFIG_CMA is not set
# CONFIG_IDLE_PAGE_TRACKING is not set
CONFIG_VM_EVENT_COUNTERS=y
# CONFIG_PERCPU_STATS is not set
#
# GUP_TEST needs to have DEBUG_FS enabled
#
# CONFIG_ANON_VMA_NAME is not set
# CONFIG_USERFAULTFD is not set
#
# Data Access Monitoring
#
# CONFIG_DAMON is not set
# end of Data Access Monitoring
# end of Memory Management options
CONFIG_NET=y
#
# Networking options
#
CONFIG_PACKET=y
# CONFIG_PACKET_DIAG is not set
CONFIG_UNIX=y
CONFIG_UNIX_SCM=y
CONFIG_AF_UNIX_OOB=y
# CONFIG_UNIX_DIAG is not set
# CONFIG_TLS is not set
# CONFIG_XFRM_USER is not set
# CONFIG_NET_KEY is not set
CONFIG_INET=y
# CONFIG_IP_MULTICAST is not set
# CONFIG_IP_ADVANCED_ROUTER is not set
# CONFIG_IP_PNP is not set
# CONFIG_NET_IPIP is not set
# CONFIG_NET_IPGRE_DEMUX is not set
# CONFIG_SYN_COOKIES is not set
# CONFIG_NET_IPVTI is not set
# CONFIG_NET_FOU is not set
# CONFIG_INET_AH is not set
# CONFIG_INET_ESP is not set
# CONFIG_INET_IPCOMP is not set
CONFIG_INET_DIAG=y
CONFIG_INET_TCP_DIAG=y
# CONFIG_INET_UDP_DIAG is not set
# CONFIG_INET_RAW_DIAG is not set
# CONFIG_INET_DIAG_DESTROY is not set
# CONFIG_TCP_CONG_ADVANCED is not set
CONFIG_TCP_CONG_CUBIC=y
CONFIG_DEFAULT_TCP_CONG="cubic"
# CONFIG_TCP_MD5SIG is not set
# CONFIG_IPV6 is not set
# CONFIG_MPTCP is not set
# CONFIG_NETWORK_SECMARK is not set
CONFIG_NET_PTP_CLASSIFY=y
# CONFIG_NETWORK_PHY_TIMESTAMPING is not set
# CONFIG_NETFILTER is not set
# CONFIG_BPFILTER is not set
# CONFIG_IP_DCCP is not set
# CONFIG_IP_SCTP is not set
# CONFIG_RDS is not set
# CONFIG_TIPC is not set
# CONFIG_ATM is not set
# CONFIG_L2TP is not set
# CONFIG_BRIDGE is not set
# CONFIG_NET_DSA is not set
# CONFIG_VLAN_8021Q is not set
# CONFIG_DECNET is not set
# CONFIG_LLC2 is not set
# CONFIG_ATALK is not set
# CONFIG_X25 is not set
# CONFIG_LAPB is not set
# CONFIG_PHONET is not set
# CONFIG_IEEE802154 is not set
# CONFIG_NET_SCHED is not set
# CONFIG_DCB is not set
# CONFIG_BATMAN_ADV is not set
# CONFIG_OPENVSWITCH is not set
# CONFIG_VSOCKETS is not set
# CONFIG_NETLINK_DIAG is not set
# CONFIG_MPLS is not set
# CONFIG_NET_NSH is not set
# CONFIG_HSR is not set
# CONFIG_NET_SWITCHDEV is not set
# CONFIG_NET_L3_MASTER_DEV is not set
# CONFIG_QRTR is not set
# CONFIG_NET_NCSI is not set
# CONFIG_CGROUP_NET_PRIO is not set
# CONFIG_CGROUP_NET_CLASSID is not set
CONFIG_NET_RX_BUSY_POLL=y
CONFIG_BQL=y
#
# Network testing
#
# CONFIG_NET_PKTGEN is not set
# end of Network testing
# end of Networking options
# CONFIG_HAMRADIO is not set
# CONFIG_CAN is not set
# CONFIG_BT is not set
# CONFIG_AF_RXRPC is not set
# CONFIG_AF_KCM is not set
# CONFIG_MCTP is not set
CONFIG_WIRELESS=y
# CONFIG_CFG80211 is not set
#
# CFG80211 needs to be enabled for MAC80211
#
CONFIG_MAC80211_STA_HASH_MAX_SIZE=0
# CONFIG_RFKILL is not set
# CONFIG_NET_9P is not set
# CONFIG_CAIF is not set
# CONFIG_CEPH_LIB is not set
# CONFIG_NFC is not set
# CONFIG_PSAMPLE is not set
# CONFIG_NET_IFE is not set
# CONFIG_LWTUNNEL is not set
# CONFIG_FAILOVER is not set
CONFIG_ETHTOOL_NETLINK=y
#
# Device Drivers
#
#
# Generic Driver Options
#
# CONFIG_UEVENT_HELPER is not set
CONFIG_DEVTMPFS=y
CONFIG_DEVTMPFS_MOUNT=y
# CONFIG_DEVTMPFS_SAFE is not set
CONFIG_STANDALONE=y
CONFIG_PREVENT_FIRMWARE_BUILD=y
#
# Firmware loader
#
CONFIG_FW_LOADER=y
CONFIG_EXTRA_FIRMWARE=""
# CONFIG_FW_LOADER_USER_HELPER is not set
# CONFIG_FW_LOADER_COMPRESS is not set
CONFIG_FW_CACHE=y
# CONFIG_FW_UPLOAD is not set
# end of Firmware loader
CONFIG_ALLOW_DEV_COREDUMP=y
# CONFIG_DEBUG_DRIVER is not set
# CONFIG_DEBUG_DEVRES is not set
# CONFIG_DEBUG_TEST_DRIVER_REMOVE is not set
# CONFIG_TEST_ASYNC_DRIVER_PROBE is not set
CONFIG_GENERIC_CPU_DEVICES=y
# end of Generic Driver Options
#
# Bus devices
#
# CONFIG_MHI_BUS is not set
# CONFIG_MHI_BUS_EP is not set
# end of Bus devices
# CONFIG_CONNECTOR is not set
#
# Firmware Drivers
#
#
# ARM System Control and Management Interface Protocol
#
# end of ARM System Control and Management Interface Protocol
# CONFIG_GOOGLE_FIRMWARE is not set
#
# Tegra firmware driver
#
# end of Tegra firmware driver
# end of Firmware Drivers
# CONFIG_GNSS is not set
# CONFIG_MTD is not set
# CONFIG_OF is not set
CONFIG_BLK_DEV=y
# CONFIG_BLK_DEV_NULL_BLK is not set
CONFIG_BLK_DEV_UBD=y
# CONFIG_BLK_DEV_UBD_SYNC is not set
CONFIG_BLK_DEV_COW_COMMON=y
CONFIG_BLK_DEV_LOOP=m
CONFIG_BLK_DEV_LOOP_MIN_COUNT=8
# CONFIG_BLK_DEV_DRBD is not set
CONFIG_BLK_DEV_NBD=m
# CONFIG_BLK_DEV_RAM is not set
# CONFIG_ATA_OVER_ETH is not set
# CONFIG_BLK_DEV_RBD is not set
# CONFIG_BLK_DEV_UBLK is not set
#
# NVME Support
#
# CONFIG_NVME_TCP is not set
# end of NVME Support
#
# Misc devices
#
# CONFIG_DUMMY_IRQ is not set
# CONFIG_ENCLOSURE_SERVICES is not set
# CONFIG_C2PORT is not set
#
# EEPROM support
#
# CONFIG_EEPROM_93CX6 is not set
# end of EEPROM support
#
# Texas Instruments shared transport line discipline
#
# end of Texas Instruments shared transport line discipline
#
# Altera FPGA firmware download module (requires I2C)
#
# CONFIG_ECHO is not set
# CONFIG_PVPANIC is not set
# end of Misc devices
#
# SCSI device support
#
CONFIG_SCSI_MOD=y
# CONFIG_RAID_ATTRS is not set
# CONFIG_SCSI is not set
# end of SCSI device support
# CONFIG_MD is not set
# CONFIG_TARGET_CORE is not set
CONFIG_NETDEVICES=y
CONFIG_NET_CORE=y
# CONFIG_BONDING is not set
CONFIG_DUMMY=m
# CONFIG_WIREGUARD is not set
# CONFIG_EQUALIZER is not set
# CONFIG_NET_TEAM is not set
# CONFIG_MACVLAN is not set
# CONFIG_IPVLAN is not set
# CONFIG_VXLAN is not set
# CONFIG_GENEVE is not set
# CONFIG_BAREUDP is not set
# CONFIG_GTP is not set
# CONFIG_MACSEC is not set
# CONFIG_NETCONSOLE is not set
CONFIG_TUN=m
# CONFIG_TUN_VNET_CROSS_LE is not set
# CONFIG_VETH is not set
# CONFIG_NLMON is not set
CONFIG_ETHERNET=y
CONFIG_NET_VENDOR_ALACRITECH=y
CONFIG_NET_VENDOR_AMAZON=y
CONFIG_NET_VENDOR_AQUANTIA=y
CONFIG_NET_VENDOR_ARC=y
CONFIG_NET_VENDOR_ASIX=y
CONFIG_NET_VENDOR_CAVIUM=y
CONFIG_NET_VENDOR_CORTINA=y
CONFIG_NET_VENDOR_DAVICOM=y
CONFIG_NET_VENDOR_ENGLEDER=y
CONFIG_NET_VENDOR_EZCHIP=y
CONFIG_NET_VENDOR_FUNGIBLE=y
CONFIG_NET_VENDOR_GOOGLE=y
CONFIG_NET_VENDOR_HUAWEI=y
CONFIG_NET_VENDOR_I825XX=y
CONFIG_NET_VENDOR_INTEL=y
CONFIG_NET_VENDOR_WANGXUN=y
CONFIG_NET_VENDOR_LITEX=y
CONFIG_NET_VENDOR_MARVELL=y
CONFIG_NET_VENDOR_MICROCHIP=y
CONFIG_NET_VENDOR_MICROSEMI=y
CONFIG_NET_VENDOR_MICROSOFT=y
CONFIG_NET_VENDOR_NI=y
CONFIG_NET_VENDOR_NATSEMI=y
CONFIG_NET_VENDOR_NETRONOME=y
CONFIG_NET_VENDOR_8390=y
CONFIG_NET_VENDOR_PENSANDO=y
CONFIG_NET_VENDOR_QUALCOMM=y
# CONFIG_RMNET is not set
CONFIG_NET_VENDOR_RENESAS=y
CONFIG_NET_VENDOR_ROCKER=y
CONFIG_NET_VENDOR_SAMSUNG=y
CONFIG_NET_VENDOR_SOLARFLARE=y
CONFIG_NET_VENDOR_SOCIONEXT=y
CONFIG_NET_VENDOR_SYNOPSYS=y
CONFIG_NET_VENDOR_VERTEXCOM=y
CONFIG_NET_VENDOR_VIA=y
CONFIG_NET_VENDOR_XILINX=y
# CONFIG_PHYLIB is not set
# CONFIG_MDIO_DEVICE is not set
#
# PCS device drivers
#
# end of PCS device drivers
CONFIG_PPP=m
# CONFIG_PPP_BSDCOMP is not set
# CONFIG_PPP_DEFLATE is not set
# CONFIG_PPP_FILTER is not set
# CONFIG_PPP_MPPE is not set
# CONFIG_PPP_MULTILINK is not set
# CONFIG_PPPOE is not set
# CONFIG_PPP_ASYNC is not set
# CONFIG_PPP_SYNC_TTY is not set
CONFIG_SLIP=m
CONFIG_SLHC=m
# CONFIG_SLIP_COMPRESSED is not set
# CONFIG_SLIP_SMART is not set
# CONFIG_SLIP_MODE_SLIP6 is not set
#
# Host-side USB support is needed for USB Network Adapter support
#
CONFIG_WLAN=y
CONFIG_WLAN_VENDOR_ADMTEK=y
CONFIG_WLAN_VENDOR_ATH=y
# CONFIG_ATH_DEBUG is not set
CONFIG_WLAN_VENDOR_ATMEL=y
CONFIG_WLAN_VENDOR_BROADCOM=y
CONFIG_WLAN_VENDOR_CISCO=y
CONFIG_WLAN_VENDOR_INTEL=y
CONFIG_WLAN_VENDOR_INTERSIL=y
# CONFIG_HOSTAP is not set
CONFIG_WLAN_VENDOR_MARVELL=y
CONFIG_WLAN_VENDOR_MEDIATEK=y
CONFIG_WLAN_VENDOR_MICROCHIP=y
CONFIG_WLAN_VENDOR_PURELIFI=y
CONFIG_WLAN_VENDOR_RALINK=y
CONFIG_WLAN_VENDOR_REALTEK=y
CONFIG_WLAN_VENDOR_RSI=y
CONFIG_WLAN_VENDOR_SILABS=y
CONFIG_WLAN_VENDOR_ST=y
CONFIG_WLAN_VENDOR_TI=y
CONFIG_WLAN_VENDOR_ZYDAS=y
CONFIG_WLAN_VENDOR_QUANTENNA=y
# CONFIG_WAN is not set
#
# Wireless WAN
#
# CONFIG_WWAN is not set
# end of Wireless WAN
# CONFIG_NET_FAILOVER is not set
#
# Input device support
#
CONFIG_INPUT=y
CONFIG_INPUT_FF_MEMLESS=y
# CONFIG_INPUT_SPARSEKMAP is not set
# CONFIG_INPUT_MATRIXKMAP is not set
CONFIG_INPUT_VIVALDIFMAP=y
#
# Userland interfaces
#
# CONFIG_INPUT_MOUSEDEV is not set
# CONFIG_INPUT_JOYDEV is not set
# CONFIG_INPUT_EVDEV is not set
# CONFIG_INPUT_EVBUG is not set
#
# Input Device Drivers
#
CONFIG_INPUT_KEYBOARD=y
CONFIG_KEYBOARD_ATKBD=y
# CONFIG_KEYBOARD_LKKBD is not set
# CONFIG_KEYBOARD_NEWTON is not set
# CONFIG_KEYBOARD_STOWAWAY is not set
# CONFIG_KEYBOARD_SUNKBD is not set
# CONFIG_KEYBOARD_XTKBD is not set
CONFIG_INPUT_MOUSE=y
CONFIG_MOUSE_PS2=y
CONFIG_MOUSE_PS2_ALPS=y
CONFIG_MOUSE_PS2_BYD=y
CONFIG_MOUSE_PS2_LOGIPS2PP=y
CONFIG_MOUSE_PS2_SYNAPTICS=y
CONFIG_MOUSE_PS2_CYPRESS=y
CONFIG_MOUSE_PS2_TRACKPOINT=y
# CONFIG_MOUSE_PS2_ELANTECH is not set
# CONFIG_MOUSE_PS2_SENTELIC is not set
# CONFIG_MOUSE_PS2_TOUCHKIT is not set
CONFIG_MOUSE_PS2_FOCALTECH=y
# CONFIG_MOUSE_SERIAL is not set
# CONFIG_MOUSE_VSXXXAA is not set
# CONFIG_INPUT_TABLET is not set
# CONFIG_INPUT_TOUCHSCREEN is not set
# CONFIG_INPUT_MISC is not set
# CONFIG_RMI4_CORE is not set
#
# Hardware I/O ports
#
CONFIG_SERIO=y
CONFIG_SERIO_SERPORT=y
CONFIG_SERIO_LIBPS2=y
# CONFIG_SERIO_RAW is not set
# CONFIG_SERIO_PS2MULT is not set
# CONFIG_USERIO is not set
# end of Hardware I/O ports
# end of Input device support
#
# Character devices
#
CONFIG_TTY=y
CONFIG_UNIX98_PTYS=y
CONFIG_LEGACY_PTYS=y
CONFIG_LEGACY_PTY_COUNT=32
CONFIG_LDISC_AUTOLOAD=y
# CONFIG_N_GSM is not set
# CONFIG_NULL_TTY is not set
# CONFIG_SERIAL_DEV_BUS is not set
# CONFIG_VIRTIO_CONSOLE is not set
CONFIG_HW_RANDOM=y
CONFIG_UML_RANDOM=y
CONFIG_DEVMEM=y
CONFIG_RANDOM_TRUST_CPU=y
CONFIG_RANDOM_TRUST_BOOTLOADER=y
# end of Character devices
#
# I2C support
#
# CONFIG_I2C is not set
# end of I2C support
# CONFIG_I3C is not set
# CONFIG_SPMI is not set
# CONFIG_HSI is not set
CONFIG_PPS=y
# CONFIG_PPS_DEBUG is not set
#
# PPS clients support
#
# CONFIG_PPS_CLIENT_KTIMER is not set
# CONFIG_PPS_CLIENT_LDISC is not set
# CONFIG_PPS_CLIENT_GPIO is not set
#
# PPS generators support
#
#
# PTP clock support
#
CONFIG_PTP_1588_CLOCK=y
CONFIG_PTP_1588_CLOCK_OPTIONAL=y
#
# Enable PHYLIB and NETWORK_PHY_TIMESTAMPING to see the additional clocks.
#
# end of PTP clock support
# CONFIG_PINCTRL is not set
# CONFIG_GPIOLIB is not set
# CONFIG_POWER_RESET is not set
# CONFIG_POWER_SUPPLY is not set
# CONFIG_THERMAL is not set
# CONFIG_WATCHDOG is not set
# CONFIG_REGULATOR is not set
# CONFIG_RC_CORE is not set
#
# CEC support
#
# CONFIG_MEDIA_CEC_SUPPORT is not set
# end of CEC support
#
# Graphics support
#
# end of Graphics support
CONFIG_SOUND_OSS_CORE_PRECLAIM=y
#
# HID support
#
CONFIG_HID=y
# CONFIG_HID_BATTERY_STRENGTH is not set
# CONFIG_HIDRAW is not set
# CONFIG_UHID is not set
CONFIG_HID_GENERIC=y
#
# Special HID drivers
#
CONFIG_HID_A4TECH=y
# CONFIG_HID_ACRUX is not set
# CONFIG_HID_AUREAL is not set
CONFIG_HID_BELKIN=y
CONFIG_HID_CHERRY=y
# CONFIG_HID_COUGAR is not set
# CONFIG_HID_MACALLY is not set
# CONFIG_HID_CMEDIA is not set
CONFIG_HID_CYPRESS=y
# CONFIG_HID_DRAGONRISE is not set
# CONFIG_HID_EMS_FF is not set
# CONFIG_HID_ELECOM is not set
CONFIG_HID_EZKEY=y
# CONFIG_HID_GEMBIRD is not set
# CONFIG_HID_GFRM is not set
# CONFIG_HID_GLORIOUS is not set
# CONFIG_HID_VIVALDI is not set
# CONFIG_HID_KEYTOUCH is not set
# CONFIG_HID_KYE is not set
# CONFIG_HID_WALTOP is not set
# CONFIG_HID_VIEWSONIC is not set
# CONFIG_HID_XIAOMI is not set
# CONFIG_HID_GYRATION is not set
# CONFIG_HID_ICADE is not set
CONFIG_HID_ITE=y
# CONFIG_HID_JABRA is not set
# CONFIG_HID_TWINHAN is not set
CONFIG_HID_KENSINGTON=y
# CONFIG_HID_LCPOWER is not set
# CONFIG_HID_LENOVO is not set
# CONFIG_HID_MAGICMOUSE is not set
# CONFIG_HID_MALTRON is not set
# CONFIG_HID_MAYFLASH is not set
CONFIG_HID_REDRAGON=y
CONFIG_HID_MICROSOFT=y
CONFIG_HID_MONTEREY=y
# CONFIG_HID_MULTITOUCH is not set
# CONFIG_HID_NTI is not set
# CONFIG_HID_ORTEK is not set
# CONFIG_HID_PANTHERLORD is not set
# CONFIG_HID_PETALYNX is not set
# CONFIG_HID_PICOLCD is not set
# CONFIG_HID_PLANTRONICS is not set
# CONFIG_HID_RAZER is not set
# CONFIG_HID_PRIMAX is not set
# CONFIG_HID_SAITEK is not set
# CONFIG_HID_SEMITEK is not set
# CONFIG_HID_SPEEDLINK is not set
# CONFIG_HID_STEAM is not set
# CONFIG_HID_STEELSERIES is not set
# CONFIG_HID_SUNPLUS is not set
# CONFIG_HID_RMI is not set
# CONFIG_HID_GREENASIA is not set
# CONFIG_HID_SMARTJOYPLUS is not set
# CONFIG_HID_TIVO is not set
# CONFIG_HID_TOPSEED is not set
# CONFIG_HID_UDRAW_PS3 is not set
# CONFIG_HID_XINMO is not set
# CONFIG_HID_ZEROPLUS is not set
# CONFIG_HID_ZYDACRON is not set
# CONFIG_HID_ALPS is not set
# end of Special HID drivers
# end of HID support
CONFIG_USB_OHCI_LITTLE_ENDIAN=y
# CONFIG_MEMSTICK is not set
# CONFIG_NEW_LEDS is not set
# CONFIG_ACCESSIBILITY is not set
# CONFIG_RTC_CLASS is not set
#
# DMABUF options
#
# CONFIG_SYNC_FILE is not set
# CONFIG_DMABUF_HEAPS is not set
# end of DMABUF options
# CONFIG_AUXDISPLAY is not set
# CONFIG_UIO is not set
# CONFIG_VFIO is not set
# CONFIG_VIRT_DRIVERS is not set
CONFIG_VIRTIO_MENU=y
# CONFIG_VDPA is not set
CONFIG_VHOST_MENU=y
# CONFIG_VHOST_NET is not set
# CONFIG_VHOST_CROSS_ENDIAN_LEGACY is not set
#
# Microsoft Hyper-V guest support
#
# end of Microsoft Hyper-V guest support
# CONFIG_GREYBUS is not set
# CONFIG_COMEDI is not set
# CONFIG_STAGING is not set
# CONFIG_COMMON_CLK is not set
# CONFIG_HWSPINLOCK is not set
#
# Clock Source drivers
#
# end of Clock Source drivers
# CONFIG_MAILBOX is not set
CONFIG_IOMMU_SUPPORT=y
#
# Generic IOMMU Pagetable Support
#
# end of Generic IOMMU Pagetable Support
#
# Remoteproc drivers
#
# end of Remoteproc drivers
#
# Rpmsg drivers
#
# end of Rpmsg drivers
#
# SOC (System On Chip) specific Drivers
#
#
# Amlogic SoC drivers
#
# end of Amlogic SoC drivers
#
# Broadcom SoC drivers
#
# end of Broadcom SoC drivers
#
# NXP/Freescale QorIQ SoC drivers
#
# end of NXP/Freescale QorIQ SoC drivers
#
# fujitsu SoC drivers
#
# end of fujitsu SoC drivers
#
# i.MX SoC drivers
#
# end of i.MX SoC drivers
#
# Enable LiteX SoC Builder specific drivers
#
# end of Enable LiteX SoC Builder specific drivers
#
# Qualcomm SoC drivers
#
# end of Qualcomm SoC drivers
# CONFIG_SOC_TI is not set
#
# Xilinx SoC drivers
#
# end of Xilinx SoC drivers
# end of SOC (System On Chip) specific Drivers
# CONFIG_PM_DEVFREQ is not set
# CONFIG_EXTCON is not set
# CONFIG_MEMORY is not set
# CONFIG_IIO is not set
# CONFIG_PWM is not set
#
# IRQ chip support
#
# end of IRQ chip support
# CONFIG_RESET_CONTROLLER is not set
#
# PHY Subsystem
#
# CONFIG_GENERIC_PHY is not set
# CONFIG_PHY_CAN_TRANSCEIVER is not set
#
# PHY drivers for Broadcom platforms
#
# end of PHY drivers for Broadcom platforms
# end of PHY Subsystem
# CONFIG_POWERCAP is not set
# CONFIG_RAS is not set
#
# Android
#
# CONFIG_ANDROID_BINDER_IPC is not set
# end of Android
# CONFIG_DAX is not set
# CONFIG_NVMEM is not set
#
# HW tracing support
#
# CONFIG_STM is not set
# end of HW tracing support
# CONFIG_FPGA is not set
# CONFIG_TEE is not set
# CONFIG_SIOX is not set
# CONFIG_SLIMBUS is not set
# CONFIG_INTERCONNECT is not set
# CONFIG_COUNTER is not set
# CONFIG_PECI is not set
# CONFIG_HTE is not set
# end of Device Drivers
#
# File systems
#
CONFIG_DCACHE_WORD_ACCESS=y
# CONFIG_VALIDATE_FS_PARSER is not set
CONFIG_FS_IOMAP=y
# CONFIG_EXT2_FS is not set
# CONFIG_EXT3_FS is not set
CONFIG_EXT4_FS=y
CONFIG_EXT4_USE_FOR_EXT2=y
# CONFIG_EXT4_FS_POSIX_ACL is not set
# CONFIG_EXT4_FS_SECURITY is not set
# CONFIG_EXT4_DEBUG is not set
CONFIG_JBD2=y
# CONFIG_JBD2_DEBUG is not set
CONFIG_FS_MBCACHE=y
CONFIG_REISERFS_FS=y
# CONFIG_REISERFS_CHECK is not set
# CONFIG_REISERFS_PROC_INFO is not set
# CONFIG_REISERFS_FS_XATTR is not set
# CONFIG_JFS_FS is not set
# CONFIG_XFS_FS is not set
# CONFIG_GFS2_FS is not set
# CONFIG_BTRFS_FS is not set
# CONFIG_NILFS2_FS is not set
# CONFIG_F2FS_FS is not set
CONFIG_EXPORTFS=y
# CONFIG_EXPORTFS_BLOCK_OPS is not set
CONFIG_FILE_LOCKING=y
# CONFIG_FS_ENCRYPTION is not set
# CONFIG_FS_VERITY is not set
CONFIG_FSNOTIFY=y
CONFIG_DNOTIFY=y
CONFIG_INOTIFY_USER=y
# CONFIG_FANOTIFY is not set
CONFIG_QUOTA=y
# CONFIG_QUOTA_NETLINK_INTERFACE is not set
CONFIG_PRINT_QUOTA_WARNING=y
# CONFIG_QUOTA_DEBUG is not set
# CONFIG_QFMT_V1 is not set
# CONFIG_QFMT_V2 is not set
CONFIG_QUOTACTL=y
CONFIG_AUTOFS4_FS=m
CONFIG_AUTOFS_FS=m
# CONFIG_FUSE_FS is not set
# CONFIG_OVERLAY_FS is not set
#
# Caches
#
# CONFIG_FSCACHE is not set
# end of Caches
#
# CD-ROM/DVD Filesystems
#
CONFIG_ISO9660_FS=m
CONFIG_JOLIET=y
# CONFIG_ZISOFS is not set
# CONFIG_UDF_FS is not set
# end of CD-ROM/DVD Filesystems
#
# DOS/FAT/EXFAT/NT Filesystems
#
# CONFIG_MSDOS_FS is not set
# CONFIG_VFAT_FS is not set
# CONFIG_EXFAT_FS is not set
# CONFIG_NTFS_FS is not set
# CONFIG_NTFS3_FS is not set
# end of DOS/FAT/EXFAT/NT Filesystems
#
# Pseudo filesystems
#
CONFIG_PROC_FS=y
CONFIG_PROC_KCORE=y
CONFIG_PROC_SYSCTL=y
CONFIG_PROC_PAGE_MONITOR=y
# CONFIG_PROC_CHILDREN is not set
CONFIG_KERNFS=y
CONFIG_SYSFS=y
CONFIG_TMPFS=y
# CONFIG_TMPFS_POSIX_ACL is not set
# CONFIG_TMPFS_XATTR is not set
# CONFIG_TMPFS_INODE64 is not set
CONFIG_MEMFD_CREATE=y
# CONFIG_CONFIGFS_FS is not set
# end of Pseudo filesystems
CONFIG_MISC_FILESYSTEMS=y
# CONFIG_ORANGEFS_FS is not set
# CONFIG_ADFS_FS is not set
# CONFIG_AFFS_FS is not set
# CONFIG_HFS_FS is not set
# CONFIG_HFSPLUS_FS is not set
# CONFIG_BEFS_FS is not set
# CONFIG_BFS_FS is not set
# CONFIG_EFS_FS is not set
# CONFIG_CRAMFS is not set
# CONFIG_SQUASHFS is not set
# CONFIG_VXFS_FS is not set
# CONFIG_MINIX_FS is not set
# CONFIG_OMFS_FS is not set
# CONFIG_HPFS_FS is not set
# CONFIG_QNX4FS_FS is not set
# CONFIG_QNX6FS_FS is not set
# CONFIG_ROMFS_FS is not set
# CONFIG_PSTORE is not set
# CONFIG_SYSV_FS is not set
# CONFIG_UFS_FS is not set
# CONFIG_EROFS_FS is not set
CONFIG_NETWORK_FILESYSTEMS=y
# CONFIG_NFS_FS is not set
# CONFIG_NFSD is not set
# CONFIG_CEPH_FS is not set
# CONFIG_CIFS is not set
# CONFIG_SMB_SERVER is not set
# CONFIG_CODA_FS is not set
# CONFIG_AFS_FS is not set
CONFIG_NLS=y
CONFIG_NLS_DEFAULT="iso8859-1"
# CONFIG_NLS_CODEPAGE_437 is not set
# CONFIG_NLS_CODEPAGE_737 is not set
# CONFIG_NLS_CODEPAGE_775 is not set
# CONFIG_NLS_CODEPAGE_850 is not set
# CONFIG_NLS_CODEPAGE_852 is not set
# CONFIG_NLS_CODEPAGE_855 is not set
# CONFIG_NLS_CODEPAGE_857 is not set
# CONFIG_NLS_CODEPAGE_860 is not set
# CONFIG_NLS_CODEPAGE_861 is not set
# CONFIG_NLS_CODEPAGE_862 is not set
# CONFIG_NLS_CODEPAGE_863 is not set
# CONFIG_NLS_CODEPAGE_864 is not set
# CONFIG_NLS_CODEPAGE_865 is not set
# CONFIG_NLS_CODEPAGE_866 is not set
# CONFIG_NLS_CODEPAGE_869 is not set
# CONFIG_NLS_CODEPAGE_936 is not set
# CONFIG_NLS_CODEPAGE_950 is not set
# CONFIG_NLS_CODEPAGE_932 is not set
# CONFIG_NLS_CODEPAGE_949 is not set
# CONFIG_NLS_CODEPAGE_874 is not set
# CONFIG_NLS_ISO8859_8 is not set
# CONFIG_NLS_CODEPAGE_1250 is not set
# CONFIG_NLS_CODEPAGE_1251 is not set
# CONFIG_NLS_ASCII is not set
# CONFIG_NLS_ISO8859_1 is not set
# CONFIG_NLS_ISO8859_2 is not set
# CONFIG_NLS_ISO8859_3 is not set
# CONFIG_NLS_ISO8859_4 is not set
# CONFIG_NLS_ISO8859_5 is not set
# CONFIG_NLS_ISO8859_6 is not set
# CONFIG_NLS_ISO8859_7 is not set
# CONFIG_NLS_ISO8859_9 is not set
# CONFIG_NLS_ISO8859_13 is not set
# CONFIG_NLS_ISO8859_14 is not set
# CONFIG_NLS_ISO8859_15 is not set
# CONFIG_NLS_KOI8_R is not set
# CONFIG_NLS_KOI8_U is not set
# CONFIG_NLS_MAC_ROMAN is not set
# CONFIG_NLS_MAC_CELTIC is not set
# CONFIG_NLS_MAC_CENTEURO is not set
# CONFIG_NLS_MAC_CROATIAN is not set
# CONFIG_NLS_MAC_CYRILLIC is not set
# CONFIG_NLS_MAC_GAELIC is not set
# CONFIG_NLS_MAC_GREEK is not set
# CONFIG_NLS_MAC_ICELAND is not set
# CONFIG_NLS_MAC_INUIT is not set
# CONFIG_NLS_MAC_ROMANIAN is not set
# CONFIG_NLS_MAC_TURKISH is not set
# CONFIG_NLS_UTF8 is not set
# CONFIG_UNICODE is not set
CONFIG_IO_WQ=y
# end of File systems
#
# Security options
#
# CONFIG_KEYS is not set
# CONFIG_SECURITY_DMESG_RESTRICT is not set
# CONFIG_SECURITY is not set
# CONFIG_SECURITYFS is not set
CONFIG_HAVE_HARDENED_USERCOPY_ALLOCATOR=y
# CONFIG_HARDENED_USERCOPY is not set
# CONFIG_STATIC_USERMODEHELPER is not set
CONFIG_DEFAULT_SECURITY_DAC=y
CONFIG_LSM="landlock,lockdown,yama,loadpin,safesetid,integrity,bpf"
#
# Kernel hardening options
#
#
# Memory initialization
#
CONFIG_INIT_STACK_NONE=y
# CONFIG_GCC_PLUGIN_STRUCTLEAK_USER is not set
# CONFIG_GCC_PLUGIN_STRUCTLEAK_BYREF is not set
# CONFIG_GCC_PLUGIN_STRUCTLEAK_BYREF_ALL is not set
# CONFIG_INIT_ON_ALLOC_DEFAULT_ON is not set
# CONFIG_INIT_ON_FREE_DEFAULT_ON is not set
CONFIG_CC_HAS_ZERO_CALL_USED_REGS=y
# CONFIG_ZERO_CALL_USED_REGS is not set
# end of Memory initialization
CONFIG_RANDSTRUCT_NONE=y
# CONFIG_RANDSTRUCT_FULL is not set
# CONFIG_RANDSTRUCT_PERFORMANCE is not set
# end of Kernel hardening options
# end of Security options
CONFIG_CRYPTO=y
#
# Crypto core or helper
#
CONFIG_CRYPTO_ALGAPI=y
CONFIG_CRYPTO_ALGAPI2=y
CONFIG_CRYPTO_HASH=y
CONFIG_CRYPTO_HASH2=y
# CONFIG_CRYPTO_MANAGER is not set
# CONFIG_CRYPTO_USER is not set
CONFIG_CRYPTO_MANAGER_DISABLE_TESTS=y
# CONFIG_CRYPTO_NULL is not set
# CONFIG_CRYPTO_CRYPTD is not set
# CONFIG_CRYPTO_AUTHENC is not set
# CONFIG_CRYPTO_TEST is not set
#
# Public-key cryptography
#
# CONFIG_CRYPTO_RSA is not set
# CONFIG_CRYPTO_DH is not set
# CONFIG_CRYPTO_ECDH is not set
# CONFIG_CRYPTO_ECDSA is not set
# CONFIG_CRYPTO_ECRDSA is not set
# CONFIG_CRYPTO_SM2 is not set
# CONFIG_CRYPTO_CURVE25519 is not set
#
# Authenticated Encryption with Associated Data
#
# CONFIG_CRYPTO_CCM is not set
# CONFIG_CRYPTO_GCM is not set
# CONFIG_CRYPTO_CHACHA20POLY1305 is not set
# CONFIG_CRYPTO_AEGIS128 is not set
# CONFIG_CRYPTO_SEQIV is not set
# CONFIG_CRYPTO_ECHAINIV is not set
#
# Block modes
#
# CONFIG_CRYPTO_CBC is not set
# CONFIG_CRYPTO_CFB is not set
# CONFIG_CRYPTO_CTR is not set
# CONFIG_CRYPTO_CTS is not set
# CONFIG_CRYPTO_ECB is not set
# CONFIG_CRYPTO_LRW is not set
# CONFIG_CRYPTO_OFB is not set
# CONFIG_CRYPTO_PCBC is not set
# CONFIG_CRYPTO_XTS is not set
# CONFIG_CRYPTO_KEYWRAP is not set
# CONFIG_CRYPTO_ADIANTUM is not set
# CONFIG_CRYPTO_HCTR2 is not set
# CONFIG_CRYPTO_ESSIV is not set
#
# Hash modes
#
# CONFIG_CRYPTO_CMAC is not set
# CONFIG_CRYPTO_HMAC is not set
# CONFIG_CRYPTO_XCBC is not set
# CONFIG_CRYPTO_VMAC is not set
#
# Digest
#
CONFIG_CRYPTO_CRC32C=y
# CONFIG_CRYPTO_CRC32 is not set
# CONFIG_CRYPTO_XXHASH is not set
# CONFIG_CRYPTO_BLAKE2B is not set
# CONFIG_CRYPTO_CRCT10DIF is not set
# CONFIG_CRYPTO_GHASH is not set
# CONFIG_CRYPTO_POLY1305 is not set
# CONFIG_CRYPTO_MD4 is not set
# CONFIG_CRYPTO_MD5 is not set
# CONFIG_CRYPTO_MICHAEL_MIC is not set
# CONFIG_CRYPTO_RMD160 is not set
# CONFIG_CRYPTO_SHA1 is not set
# CONFIG_CRYPTO_SHA256 is not set
# CONFIG_CRYPTO_SHA512 is not set
# CONFIG_CRYPTO_SHA3 is not set
# CONFIG_CRYPTO_SM3_GENERIC is not set
# CONFIG_CRYPTO_STREEBOG is not set
# CONFIG_CRYPTO_WP512 is not set
#
# Ciphers
#
# CONFIG_CRYPTO_AES is not set
# CONFIG_CRYPTO_AES_TI is not set
# CONFIG_CRYPTO_BLOWFISH is not set
# CONFIG_CRYPTO_CAMELLIA is not set
# CONFIG_CRYPTO_CAST5 is not set
# CONFIG_CRYPTO_CAST6 is not set
# CONFIG_CRYPTO_DES is not set
# CONFIG_CRYPTO_FCRYPT is not set
# CONFIG_CRYPTO_CHACHA20 is not set
# CONFIG_CRYPTO_ARIA is not set
# CONFIG_CRYPTO_SERPENT is not set
# CONFIG_CRYPTO_SM4_GENERIC is not set
# CONFIG_CRYPTO_TWOFISH is not set
# CONFIG_CRYPTO_TWOFISH_X86_64 is not set
#
# Compression
#
# CONFIG_CRYPTO_DEFLATE is not set
# CONFIG_CRYPTO_LZO is not set
# CONFIG_CRYPTO_842 is not set
# CONFIG_CRYPTO_LZ4 is not set
# CONFIG_CRYPTO_LZ4HC is not set
# CONFIG_CRYPTO_ZSTD is not set
#
# Random Number Generation
#
# CONFIG_CRYPTO_ANSI_CPRNG is not set
# CONFIG_CRYPTO_DRBG_MENU is not set
# CONFIG_CRYPTO_JITTERENTROPY is not set
# CONFIG_CRYPTO_USER_API_HASH is not set
# CONFIG_CRYPTO_USER_API_SKCIPHER is not set
# CONFIG_CRYPTO_USER_API_RNG is not set
# CONFIG_CRYPTO_USER_API_AEAD is not set
CONFIG_CRYPTO_HW=y
#
# Certificates for signature checking
#
# end of Certificates for signature checking
#
# Library routines
#
# CONFIG_PACKING is not set
CONFIG_BITREVERSE=y
CONFIG_ARCH_HAS_STRNCPY_FROM_USER=y
CONFIG_ARCH_HAS_STRNLEN_USER=y
CONFIG_GENERIC_NET_UTILS=y
# CONFIG_CORDIC is not set
# CONFIG_PRIME_NUMBERS is not set
#
# Crypto library routines
#
CONFIG_CRYPTO_LIB_BLAKE2S_GENERIC=y
# CONFIG_CRYPTO_LIB_CHACHA is not set
# CONFIG_CRYPTO_LIB_CURVE25519 is not set
CONFIG_CRYPTO_LIB_POLY1305_RSIZE=11
# CONFIG_CRYPTO_LIB_POLY1305 is not set
# CONFIG_CRYPTO_LIB_CHACHA20POLY1305 is not set
CONFIG_CRYPTO_LIB_SHA1=y
# end of Crypto library routines
CONFIG_LIB_MEMNEQ=y
# CONFIG_CRC_CCITT is not set
CONFIG_CRC16=y
# CONFIG_CRC_T10DIF is not set
# CONFIG_CRC64_ROCKSOFT is not set
# CONFIG_CRC_ITU_T is not set
CONFIG_CRC32=y
# CONFIG_CRC32_SELFTEST is not set
CONFIG_CRC32_SLICEBY8=y
# CONFIG_CRC32_SLICEBY4 is not set
# CONFIG_CRC32_SARWATE is not set
# CONFIG_CRC32_BIT is not set
# CONFIG_CRC64 is not set
# CONFIG_CRC4 is not set
# CONFIG_CRC7 is not set
# CONFIG_LIBCRC32C is not set
# CONFIG_CRC8 is not set
# CONFIG_RANDOM32_SELFTEST is not set
# CONFIG_XZ_DEC is not set
CONFIG_NO_DMA=y
CONFIG_ARCH_DMA_ADDR_T_64BIT=y
# CONFIG_DMA_API_DEBUG is not set
CONFIG_DQL=y
CONFIG_NLATTR=y
# CONFIG_IRQ_POLL is not set
CONFIG_SBITMAP=y
# end of Library routines
#
# Kernel hacking
#
#
# printk and dmesg options
#
# CONFIG_PRINTK_TIME is not set
# CONFIG_PRINTK_CALLER is not set
# CONFIG_STACKTRACE_BUILD_ID is not set
CONFIG_CONSOLE_LOGLEVEL_DEFAULT=7
CONFIG_CONSOLE_LOGLEVEL_QUIET=4
CONFIG_MESSAGE_LOGLEVEL_DEFAULT=4
# CONFIG_BOOT_PRINTK_DELAY is not set
# CONFIG_DYNAMIC_DEBUG is not set
# CONFIG_DYNAMIC_DEBUG_CORE is not set
CONFIG_SYMBOLIC_ERRNAME=y
CONFIG_DEBUG_BUGVERBOSE=y
# end of printk and dmesg options
CONFIG_DEBUG_KERNEL=y
CONFIG_DEBUG_MISC=y
#
# Compile-time checks and compiler options
#
CONFIG_DEBUG_INFO_NONE=y
# CONFIG_DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT is not set
# CONFIG_DEBUG_INFO_DWARF4 is not set
# CONFIG_DEBUG_INFO_DWARF5 is not set
CONFIG_FRAME_WARN=2048
# CONFIG_STRIP_ASM_SYMS is not set
# CONFIG_READABLE_ASM is not set
CONFIG_DEBUG_SECTION_MISMATCH=y
CONFIG_SECTION_MISMATCH_WARN_ONLY=y
# CONFIG_FRAME_POINTER is not set
# CONFIG_DEBUG_FORCE_WEAK_PER_CPU is not set
# end of Compile-time checks and compiler options
#
# Generic Kernel Debugging Instruments
#
CONFIG_MAGIC_SYSRQ_DEFAULT_ENABLE=0x1
CONFIG_MAGIC_SYSRQ_SERIAL=y
CONFIG_MAGIC_SYSRQ_SERIAL_SEQUENCE=""
# CONFIG_DEBUG_FS is not set
# CONFIG_UBSAN is not set
CONFIG_HAVE_KCSAN_COMPILER=y
# end of Generic Kernel Debugging Instruments
#
# Networking Debugging
#
# CONFIG_NET_DEV_REFCNT_TRACKER is not set
# CONFIG_NET_NS_REFCNT_TRACKER is not set
# CONFIG_DEBUG_NET is not set
# end of Networking Debugging
#
# Memory Debugging
#
# CONFIG_PAGE_EXTENSION is not set
# CONFIG_DEBUG_PAGEALLOC is not set
# CONFIG_DEBUG_SLAB is not set
# CONFIG_PAGE_OWNER is not set
# CONFIG_PAGE_POISONING is not set
# CONFIG_DEBUG_OBJECTS is not set
CONFIG_HAVE_DEBUG_KMEMLEAK=y
# CONFIG_DEBUG_KMEMLEAK is not set
# CONFIG_DEBUG_STACK_USAGE is not set
# CONFIG_SCHED_STACK_END_CHECK is not set
# CONFIG_DEBUG_VM is not set
CONFIG_DEBUG_MEMORY_INIT=y
CONFIG_HAVE_ARCH_KASAN=y
CONFIG_HAVE_ARCH_KASAN_VMALLOC=y
CONFIG_CC_HAS_KASAN_GENERIC=y
CONFIG_CC_HAS_WORKING_NOSANITIZE_ADDRESS=y
# CONFIG_KASAN is not set
# end of Memory Debugging
# CONFIG_DEBUG_SHIRQ is not set
#
# Debug Oops, Lockups and Hangs
#
# CONFIG_PANIC_ON_OOPS is not set
CONFIG_PANIC_ON_OOPS_VALUE=0
CONFIG_PANIC_TIMEOUT=0
# CONFIG_SOFTLOCKUP_DETECTOR is not set
# CONFIG_DETECT_HUNG_TASK is not set
# CONFIG_WQ_WATCHDOG is not set
# CONFIG_TEST_LOCKUP is not set
# end of Debug Oops, Lockups and Hangs
#
# Scheduler Debugging
#
CONFIG_SCHED_DEBUG=y
# CONFIG_SCHEDSTATS is not set
# end of Scheduler Debugging
# CONFIG_DEBUG_TIMEKEEPING is not set
#
# Lock Debugging (spinlocks, mutexes, etc...)
#
CONFIG_LOCK_DEBUGGING_SUPPORT=y
# CONFIG_PROVE_LOCKING is not set
# CONFIG_LOCK_STAT is not set
# CONFIG_DEBUG_RT_MUTEXES is not set
# CONFIG_DEBUG_SPINLOCK is not set
# CONFIG_DEBUG_MUTEXES is not set
# CONFIG_DEBUG_WW_MUTEX_SLOWPATH is not set
# CONFIG_DEBUG_RWSEMS is not set
# CONFIG_DEBUG_LOCK_ALLOC is not set
# CONFIG_DEBUG_LOCKING_API_SELFTESTS is not set
# CONFIG_LOCK_TORTURE_TEST is not set
# CONFIG_WW_MUTEX_SELFTEST is not set
# CONFIG_SCF_TORTURE_TEST is not set
# CONFIG_CSD_LOCK_WAIT_DEBUG is not set
# end of Lock Debugging (spinlocks, mutexes, etc...)
# CONFIG_DEBUG_IRQFLAGS is not set
CONFIG_STACKTRACE=y
# CONFIG_WARN_ALL_UNSEEDED_RANDOM is not set
# CONFIG_DEBUG_KOBJECT is not set
CONFIG_HAVE_DEBUG_BUGVERBOSE=y
#
# Debug kernel data structures
#
# CONFIG_DEBUG_LIST is not set
# CONFIG_DEBUG_PLIST is not set
# CONFIG_DEBUG_SG is not set
# CONFIG_DEBUG_NOTIFIERS is not set
# CONFIG_BUG_ON_DATA_CORRUPTION is not set
# end of Debug kernel data structures
# CONFIG_DEBUG_CREDENTIALS is not set
#
# RCU Debugging
#
# CONFIG_RCU_SCALE_TEST is not set
# CONFIG_RCU_TORTURE_TEST is not set
# CONFIG_RCU_REF_SCALE_TEST is not set
# CONFIG_RCU_TRACE is not set
# CONFIG_RCU_EQS_DEBUG is not set
# end of RCU Debugging
# CONFIG_DEBUG_WQ_FORCE_RR_CPU is not set
CONFIG_TRACING_SUPPORT=y
CONFIG_FTRACE=y
# CONFIG_IRQSOFF_TRACER is not set
# CONFIG_SCHED_TRACER is not set
# CONFIG_HWLAT_TRACER is not set
# CONFIG_OSNOISE_TRACER is not set
# CONFIG_TIMERLAT_TRACER is not set
# CONFIG_ENABLE_DEFAULT_TRACERS is not set
# CONFIG_TRACER_SNAPSHOT is not set
CONFIG_BRANCH_PROFILE_NONE=y
# CONFIG_PROFILE_ANNOTATED_BRANCHES is not set
# CONFIG_PROFILE_ALL_BRANCHES is not set
# CONFIG_BLK_DEV_IO_TRACE is not set
# CONFIG_SYNTH_EVENTS is not set
# CONFIG_TRACEPOINT_BENCHMARK is not set
# CONFIG_PREEMPTIRQ_DELAY_TEST is not set
# CONFIG_SAMPLES is not set
#
# um Debugging
#
CONFIG_EARLY_PRINTK=y
# end of um Debugging
#
# Kernel Testing and Coverage
#
# CONFIG_KUNIT is not set
# CONFIG_NOTIFIER_ERROR_INJECTION is not set
# CONFIG_FAULT_INJECTION is not set
CONFIG_ARCH_HAS_KCOV=y
CONFIG_CC_HAS_SANCOV_TRACE_PC=y
# CONFIG_KCOV is not set
CONFIG_RUNTIME_TESTING_MENU=y
# CONFIG_TEST_MIN_HEAP is not set
# CONFIG_TEST_DIV64 is not set
# CONFIG_BACKTRACE_SELF_TEST is not set
# CONFIG_TEST_REF_TRACKER is not set
# CONFIG_RBTREE_TEST is not set
# CONFIG_REED_SOLOMON_TEST is not set
# CONFIG_INTERVAL_TREE_TEST is not set
# CONFIG_PERCPU_TEST is not set
# CONFIG_ATOMIC64_SELFTEST is not set
# CONFIG_TEST_HEXDUMP is not set
# CONFIG_STRING_SELFTEST is not set
# CONFIG_TEST_STRING_HELPERS is not set
# CONFIG_TEST_STRSCPY is not set
# CONFIG_TEST_KSTRTOX is not set
# CONFIG_TEST_PRINTF is not set
# CONFIG_TEST_SCANF is not set
# CONFIG_TEST_BITMAP is not set
# CONFIG_TEST_UUID is not set
# CONFIG_TEST_XARRAY is not set
# CONFIG_TEST_RHASHTABLE is not set
# CONFIG_TEST_SIPHASH is not set
# CONFIG_TEST_IDA is not set
# CONFIG_TEST_LKM is not set
# CONFIG_TEST_BITOPS is not set
# CONFIG_TEST_VMALLOC is not set
# CONFIG_TEST_USER_COPY is not set
# CONFIG_TEST_BPF is not set
# CONFIG_TEST_BLACKHOLE_DEV is not set
# CONFIG_FIND_BIT_BENCHMARK is not set
# CONFIG_TEST_FIRMWARE is not set
# CONFIG_TEST_SYSCTL is not set
# CONFIG_TEST_UDELAY is not set
# CONFIG_TEST_STATIC_KEYS is not set
# CONFIG_TEST_KMOD is not set
# CONFIG_TEST_MEMCAT_P is not set
# CONFIG_TEST_MEMINIT is not set
# CONFIG_TEST_FREE_PAGES is not set
# end of Kernel Testing and Coverage
# end of Kernel hacking
^ permalink raw reply [flat|nested] 30+ messages in thread
* Re: [PATCH v3 2/7] kbuild: list sub-directories in ./Kbuild
2022-09-24 20:27 ` kernel test robot
@ 2022-09-25 0:28 ` Masahiro Yamada
2022-09-26 21:06 ` Nick Desaulniers
0 siblings, 1 reply; 30+ messages in thread
From: Masahiro Yamada @ 2022-09-25 0:28 UTC (permalink / raw)
To: kernel test robot
Cc: Linux Kbuild mailing list, kbuild-all, Linux Kernel Mailing List,
linux-arch, Nick Desaulniers, Nathan Chancellor
On Sun, Sep 25, 2022 at 5:28 AM kernel test robot <lkp@intel.com> wrote:
>
> Hi Masahiro,
>
> I love your patch! Perhaps something to improve:
>
> [auto build test WARNING on masahiroy-kbuild/for-next]
> [cannot apply to arm64/for-next/core gerg-m68knommu/for-next geert-m68k/for-next deller-parisc/for-next powerpc/next s390/features tip/x86/core linus/master v6.0-rc6 next-20220923]
> [If your patch is applied to the wrong git tree, kindly drop us a note.
> And when submitting patch, we suggest to use '--base' as documented in
> https://git-scm.com/docs/git-format-patch#_base_tree_information]
>
> url: https://github.com/intel-lab-lkp/linux/commits/Masahiro-Yamada/kbuild-various-cleanups/20220925-022150
> base: https://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild.git for-next
> config: um-x86_64_defconfig
> compiler: gcc-11 (Debian 11.3.0-5) 11.3.0
> reproduce (this is a W=1 build):
> # https://github.com/intel-lab-lkp/linux/commit/d721cc5614aaa17b2965db04e9319d4ef5f7eaf7
> git remote add linux-review https://github.com/intel-lab-lkp/linux
> git fetch --no-tags linux-review Masahiro-Yamada/kbuild-various-cleanups/20220925-022150
> git checkout d721cc5614aaa17b2965db04e9319d4ef5f7eaf7
> # save the config file
> mkdir build_dir && cp config build_dir/.config
> make W=1 O=build_dir ARCH=um SUBARCH=x86_64 SHELL=/bin/bash
>
> If you fix the issue, kindly add following tag where applicable
> | Reported-by: kernel test robot <lkp@intel.com>
>
> All warnings (new ones prefixed by >>):
>
> >> /usr/bin/ld: warning: ./arch/x86/um/vdso/vdso.o: missing .note.GNU-stack section implies executable stack
> /usr/bin/ld: NOTE: This behaviour is deprecated and will be removed in a future version of the linker
> /usr/bin/ld: warning: .tmp_vmlinux.kallsyms1 has a LOAD segment with RWX permissions
> /usr/bin/ld: warning: .tmp_vmlinux.kallsyms1.o: missing .note.GNU-stack section implies executable stack
> /usr/bin/ld: NOTE: This behaviour is deprecated and will be removed in a future version of the linker
> /usr/bin/ld: warning: .tmp_vmlinux.kallsyms2 has a LOAD segment with RWX permissions
> /usr/bin/ld: warning: .tmp_vmlinux.kallsyms2.o: missing .note.GNU-stack section implies executable stack
> /usr/bin/ld: NOTE: This behaviour is deprecated and will be removed in a future version of the linker
> /usr/bin/ld: warning: vmlinux has a LOAD segment with RWX permissions
>
> --
> 0-DAY CI Kernel Test Service
> https://01.org/lkp
My compiler is slightly different
(gcc (Ubuntu 11.2.0-19ubuntu1) 11.2.0), but
I cannot reproduce it.
Perhaps, 0day thought this is a new warning
due to a slightly different path?
[before]
warning: arch/x86/um/vdso/vdso.o
[after]
warning: ./arch/x86/um/vdso/vdso.o
--
Best Regards
Masahiro Yamada
^ permalink raw reply [flat|nested] 30+ messages in thread
* Re: [PATCH v3 2/7] kbuild: list sub-directories in ./Kbuild
2022-09-25 0:28 ` Masahiro Yamada
@ 2022-09-26 21:06 ` Nick Desaulniers
2022-09-28 8:32 ` Masahiro Yamada
0 siblings, 1 reply; 30+ messages in thread
From: Nick Desaulniers @ 2022-09-26 21:06 UTC (permalink / raw)
To: Masahiro Yamada
Cc: kernel test robot, Linux Kbuild mailing list, kbuild-all,
Linux Kernel Mailing List, linux-arch, Nathan Chancellor,
David Gow
On Sat, Sep 24, 2022 at 5:29 PM Masahiro Yamada <masahiroy@kernel.org> wrote:
>
> On Sun, Sep 25, 2022 at 5:28 AM kernel test robot <lkp@intel.com> wrote:
> >
> > Hi Masahiro,
> >
> > I love your patch! Perhaps something to improve:
> >
> > [auto build test WARNING on masahiroy-kbuild/for-next]
> > [cannot apply to arm64/for-next/core gerg-m68knommu/for-next geert-m68k/for-next deller-parisc/for-next powerpc/next s390/features tip/x86/core linus/master v6.0-rc6 next-20220923]
> > [If your patch is applied to the wrong git tree, kindly drop us a note.
> > And when submitting patch, we suggest to use '--base' as documented in
> > https://git-scm.com/docs/git-format-patch#_base_tree_information]
> >
> > url: https://github.com/intel-lab-lkp/linux/commits/Masahiro-Yamada/kbuild-various-cleanups/20220925-022150
> > base: https://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild.git for-next
> > config: um-x86_64_defconfig
> > compiler: gcc-11 (Debian 11.3.0-5) 11.3.0
> > reproduce (this is a W=1 build):
> > # https://github.com/intel-lab-lkp/linux/commit/d721cc5614aaa17b2965db04e9319d4ef5f7eaf7
> > git remote add linux-review https://github.com/intel-lab-lkp/linux
> > git fetch --no-tags linux-review Masahiro-Yamada/kbuild-various-cleanups/20220925-022150
> > git checkout d721cc5614aaa17b2965db04e9319d4ef5f7eaf7
> > # save the config file
> > mkdir build_dir && cp config build_dir/.config
> > make W=1 O=build_dir ARCH=um SUBARCH=x86_64 SHELL=/bin/bash
> >
> > If you fix the issue, kindly add following tag where applicable
> > | Reported-by: kernel test robot <lkp@intel.com>
> >
> > All warnings (new ones prefixed by >>):
> >
> > >> /usr/bin/ld: warning: ./arch/x86/um/vdso/vdso.o: missing .note.GNU-stack section implies executable stack
> > /usr/bin/ld: NOTE: This behaviour is deprecated and will be removed in a future version of the linker
> > /usr/bin/ld: warning: .tmp_vmlinux.kallsyms1 has a LOAD segment with RWX permissions
> > /usr/bin/ld: warning: .tmp_vmlinux.kallsyms1.o: missing .note.GNU-stack section implies executable stack
> > /usr/bin/ld: NOTE: This behaviour is deprecated and will be removed in a future version of the linker
> > /usr/bin/ld: warning: .tmp_vmlinux.kallsyms2 has a LOAD segment with RWX permissions
> > /usr/bin/ld: warning: .tmp_vmlinux.kallsyms2.o: missing .note.GNU-stack section implies executable stack
> > /usr/bin/ld: NOTE: This behaviour is deprecated and will be removed in a future version of the linker
> > /usr/bin/ld: warning: vmlinux has a LOAD segment with RWX permissions
See also:
https://lore.kernel.org/lkml/20220921064855.2841607-1-davidgow@google.com/
> >
> > --
> > 0-DAY CI Kernel Test Service
> > https://01.org/lkp
>
>
>
>
>
>
>
>
> My compiler is slightly different
> (gcc (Ubuntu 11.2.0-19ubuntu1) 11.2.0), but
> I cannot reproduce it.
>
>
>
> Perhaps, 0day thought this is a new warning
> due to a slightly different path?
>
>
> [before]
> warning: arch/x86/um/vdso/vdso.o
>
> [after]
> warning: ./arch/x86/um/vdso/vdso.o
>
>
>
>
> --
> Best Regards
> Masahiro Yamada
--
Thanks,
~Nick Desaulniers
^ permalink raw reply [flat|nested] 30+ messages in thread
* Re: [PATCH v3 0/7] kbuild: various cleanups
2022-09-24 18:19 [PATCH v3 0/7] kbuild: various cleanups Masahiro Yamada
` (6 preceding siblings ...)
2022-09-24 18:19 ` [PATCH v3 7/7] kbuild: remove head-y syntax Masahiro Yamada
@ 2022-09-26 21:39 ` Nick Desaulniers
7 siblings, 0 replies; 30+ messages in thread
From: Nick Desaulniers @ 2022-09-26 21:39 UTC (permalink / raw)
To: Masahiro Yamada; +Cc: linux-kbuild, linux-kernel, linux-arch, Nathan Chancellor
On Sat, Sep 24, 2022 at 11:20 AM Masahiro Yamada <masahiroy@kernel.org> wrote:
>
> - Link vmlinux and modules in parallel
I was curious if this resulted in an observable improvement. N=1
Mainline:
$ /usr/bin/time -v make ARCH=arm64 LLVM=1 -j128 -s
Elapsed (wall clock) time (h:mm:ss or m:ss): 2:15.68
With this series:
$ /usr/bin/time -v make ARCH=arm64 LLVM=1 -j128 -s
Elapsed (wall clock) time (h:mm:ss or m:ss): 2:12.22
I'll take it!
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
> - Remove head-y syntax
>
>
> Masahiro Yamada (7):
> kbuild: hard-code KBUILD_ALLDIRS in scripts/Makefile.package
> kbuild: list sub-directories in ./Kbuild
> kbuild: move .vmlinux.objs rule to Makefile.modpost
> kbuild: move vmlinux.o rule to the top Makefile
> kbuild: unify two modpost invocations
> kbuild: use obj-y instead extra-y for objects placed at the head
> kbuild: remove head-y syntax
>
> Documentation/kbuild/makefiles.rst | 27 +----
> Kbuild | 24 ++++
> Makefile | 119 +++++++++++---------
> arch/alpha/Makefile | 2 -
> arch/alpha/kernel/Makefile | 4 +-
> arch/arc/Makefile | 2 -
> arch/arc/kernel/Makefile | 4 +-
> arch/arm/Makefile | 3 -
> arch/arm/kernel/Makefile | 4 +-
> arch/arm64/Makefile | 3 -
> arch/arm64/kernel/Makefile | 4 +-
> arch/csky/Makefile | 2 -
> arch/csky/kernel/Makefile | 4 +-
> arch/hexagon/Makefile | 2 -
> arch/hexagon/kernel/Makefile | 3 +-
> arch/ia64/Makefile | 1 -
> arch/ia64/kernel/Makefile | 4 +-
> arch/loongarch/Makefile | 2 -
> arch/loongarch/kernel/Makefile | 4 +-
> arch/m68k/68000/Makefile | 2 +-
> arch/m68k/Makefile | 9 --
> arch/m68k/coldfire/Makefile | 2 +-
> arch/m68k/kernel/Makefile | 23 ++--
> arch/microblaze/Makefile | 1 -
> arch/microblaze/kernel/Makefile | 4 +-
> arch/mips/Makefile | 2 -
> arch/mips/kernel/Makefile | 4 +-
> arch/nios2/Makefile | 1 -
> arch/nios2/kernel/Makefile | 2 +-
> arch/openrisc/Makefile | 2 -
> arch/openrisc/kernel/Makefile | 4 +-
> arch/parisc/Makefile | 2 -
> arch/parisc/kernel/Makefile | 4 +-
> arch/powerpc/Makefile | 12 --
> arch/powerpc/kernel/Makefile | 20 ++--
> arch/riscv/Makefile | 2 -
> arch/riscv/kernel/Makefile | 2 +-
> arch/s390/Makefile | 2 -
> arch/s390/kernel/Makefile | 4 +-
> arch/sh/Makefile | 2 -
> arch/sh/kernel/Makefile | 4 +-
> arch/sparc/Makefile | 2 -
> arch/sparc/kernel/Makefile | 3 +-
> arch/x86/Makefile | 5 -
> arch/x86/kernel/Makefile | 10 +-
> arch/xtensa/Makefile | 2 -
> arch/xtensa/kernel/Makefile | 4 +-
> scripts/Makefile.lib | 2 +
> scripts/Makefile.modfinal | 2 +-
> scripts/Makefile.modpost | 112 ++++++++----------
> scripts/Makefile.package | 5 +-
> scripts/Makefile.vmlinux_o | 6 +-
> scripts/clang-tools/gen_compile_commands.py | 19 +---
> scripts/head-object-list.txt | 53 +++++++++
> scripts/link-vmlinux.sh | 34 +-----
> 55 files changed, 273 insertions(+), 314 deletions(-)
> create mode 100644 scripts/head-object-list.txt
>
> --
> 2.34.1
>
--
Thanks,
~Nick Desaulniers
^ permalink raw reply [flat|nested] 30+ messages in thread
* Re: [PATCH v3 2/7] kbuild: list sub-directories in ./Kbuild
2022-09-26 21:06 ` Nick Desaulniers
@ 2022-09-28 8:32 ` Masahiro Yamada
0 siblings, 0 replies; 30+ messages in thread
From: Masahiro Yamada @ 2022-09-28 8:32 UTC (permalink / raw)
To: Nick Desaulniers
Cc: kernel test robot, Linux Kbuild mailing list, kbuild-all,
Linux Kernel Mailing List, linux-arch, Nathan Chancellor,
David Gow
On Tue, Sep 27, 2022 at 6:06 AM Nick Desaulniers
<ndesaulniers@google.com> wrote:
>
> On Sat, Sep 24, 2022 at 5:29 PM Masahiro Yamada <masahiroy@kernel.org> wrote:
> >
> > On Sun, Sep 25, 2022 at 5:28 AM kernel test robot <lkp@intel.com> wrote:
> > >
> > > Hi Masahiro,
> > >
> > > I love your patch! Perhaps something to improve:
> > >
> > > [auto build test WARNING on masahiroy-kbuild/for-next]
> > > [cannot apply to arm64/for-next/core gerg-m68knommu/for-next geert-m68k/for-next deller-parisc/for-next powerpc/next s390/features tip/x86/core linus/master v6.0-rc6 next-20220923]
> > > [If your patch is applied to the wrong git tree, kindly drop us a note.
> > > And when submitting patch, we suggest to use '--base' as documented in
> > > https://git-scm.com/docs/git-format-patch#_base_tree_information]
> > >
> > > url: https://github.com/intel-lab-lkp/linux/commits/Masahiro-Yamada/kbuild-various-cleanups/20220925-022150
> > > base: https://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild.git for-next
> > > config: um-x86_64_defconfig
> > > compiler: gcc-11 (Debian 11.3.0-5) 11.3.0
> > > reproduce (this is a W=1 build):
> > > # https://github.com/intel-lab-lkp/linux/commit/d721cc5614aaa17b2965db04e9319d4ef5f7eaf7
> > > git remote add linux-review https://github.com/intel-lab-lkp/linux
> > > git fetch --no-tags linux-review Masahiro-Yamada/kbuild-various-cleanups/20220925-022150
> > > git checkout d721cc5614aaa17b2965db04e9319d4ef5f7eaf7
> > > # save the config file
> > > mkdir build_dir && cp config build_dir/.config
> > > make W=1 O=build_dir ARCH=um SUBARCH=x86_64 SHELL=/bin/bash
> > >
> > > If you fix the issue, kindly add following tag where applicable
> > > | Reported-by: kernel test robot <lkp@intel.com>
> > >
> > > All warnings (new ones prefixed by >>):
> > >
> > > >> /usr/bin/ld: warning: ./arch/x86/um/vdso/vdso.o: missing .note.GNU-stack section implies executable stack
> > > /usr/bin/ld: NOTE: This behaviour is deprecated and will be removed in a future version of the linker
> > > /usr/bin/ld: warning: .tmp_vmlinux.kallsyms1 has a LOAD segment with RWX permissions
> > > /usr/bin/ld: warning: .tmp_vmlinux.kallsyms1.o: missing .note.GNU-stack section implies executable stack
> > > /usr/bin/ld: NOTE: This behaviour is deprecated and will be removed in a future version of the linker
> > > /usr/bin/ld: warning: .tmp_vmlinux.kallsyms2 has a LOAD segment with RWX permissions
> > > /usr/bin/ld: warning: .tmp_vmlinux.kallsyms2.o: missing .note.GNU-stack section implies executable stack
> > > /usr/bin/ld: NOTE: This behaviour is deprecated and will be removed in a future version of the linker
> > > /usr/bin/ld: warning: vmlinux has a LOAD segment with RWX permissions
>
> See also:
> https://lore.kernel.org/lkml/20220921064855.2841607-1-davidgow@google.com/
Ah, thank you.
My binutils version is 2.38, and
that is why I was not able to reproduce the issue.
With binutils 2.39, now I see the warnings in the mainline kernel.
My patch is not the root cause.
--
Best Regards
Masahiro Yamada
^ permalink raw reply [flat|nested] 30+ messages in thread
* Re: [PATCH v3 1/7] kbuild: hard-code KBUILD_ALLDIRS in scripts/Makefile.package
2022-09-24 18:19 ` [PATCH v3 1/7] kbuild: hard-code KBUILD_ALLDIRS in scripts/Makefile.package Masahiro Yamada
@ 2022-09-28 19:09 ` Nicolas Schier
0 siblings, 0 replies; 30+ messages in thread
From: Nicolas Schier @ 2022-09-28 19:09 UTC (permalink / raw)
To: Masahiro Yamada
Cc: linux-kbuild, linux-kernel, linux-arch, Nick Desaulniers,
Nathan Chancellor
[-- Attachment #1: Type: text/plain, Size: 2223 bytes --]
On Sun, 25 Sep 2022 03:19:09 +0900 Masahiro Yamada wrote:
> My plan is to list subdirectories in ./Kbuild. Once it occurs,
> $(vmlinux-alldirs) will not contain all subdirectories.
>
> Let's hard-code the directory list until I get around to implementing
> a more sophisticated way for generating a source tarball.
>
> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
> ---
Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
> Changes in v3:
> - New patch
>
> Makefile | 2 --
> scripts/Makefile.package | 5 ++++-
> 2 files changed, 4 insertions(+), 3 deletions(-)
>
> diff --git a/Makefile b/Makefile
> index 57cf4a5bea6d..eb4bbbc898d0 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -1129,8 +1129,6 @@ KBUILD_VMLINUX_OBJS += $(patsubst %/,%/built-in.a, $(drivers-y))
>
> export KBUILD_VMLINUX_OBJS KBUILD_VMLINUX_LIBS
> export KBUILD_LDS := arch/$(SRCARCH)/kernel/vmlinux.lds
> -# used by scripts/Makefile.package
> -export KBUILD_ALLDIRS := $(sort $(filter-out arch/%,$(vmlinux-alldirs)) LICENSES arch include scripts tools)
>
> vmlinux-deps := $(KBUILD_LDS) $(KBUILD_VMLINUX_OBJS) $(KBUILD_VMLINUX_LIBS)
>
> diff --git a/scripts/Makefile.package b/scripts/Makefile.package
> index 5017f6b2da80..8bbcced67c22 100644
> --- a/scripts/Makefile.package
> +++ b/scripts/Makefile.package
> @@ -29,7 +29,10 @@ KDEB_SOURCENAME ?= linux-upstream
> KBUILD_PKG_ROOTCMD ?="fakeroot -u"
> export KDEB_SOURCENAME
> # Include only those top-level files that are needed by make, plus the GPL copy
> -TAR_CONTENT := $(KBUILD_ALLDIRS) .config .scmversion Makefile \
> +TAR_CONTENT := Documentation LICENSES arch block certs crypto drivers fs \
> + include init io_uring ipc kernel lib mm net samples scripts \
> + security sound tools usr virt \
> + .config .scmversion Makefile \
> Kbuild Kconfig COPYING $(wildcard localversion*)
> MKSPEC := $(srctree)/scripts/package/mkspec
>
> --
> 2.34.1
--
epost|xmpp: nicolas@fjasle.eu irc://oftc.net/nsc
↳ gpg: 18ed 52db e34f 860e e9fb c82b 7d97 0932 55a0 ce7f
-- frykten for herren er opphav til kunnskap --
[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 833 bytes --]
^ permalink raw reply [flat|nested] 30+ messages in thread
* Re: [PATCH v3 2/7] kbuild: list sub-directories in ./Kbuild
2022-09-24 18:19 ` [PATCH v3 2/7] kbuild: list sub-directories in ./Kbuild Masahiro Yamada
2022-09-24 19:37 ` kernel test robot
2022-09-24 20:27 ` kernel test robot
@ 2022-09-28 19:30 ` Nicolas Schier
2 siblings, 0 replies; 30+ messages in thread
From: Nicolas Schier @ 2022-09-28 19:30 UTC (permalink / raw)
To: Masahiro Yamada
Cc: linux-kbuild, linux-kernel, linux-arch, Nick Desaulniers,
Nathan Chancellor
[-- Attachment #1: Type: text/plain, Size: 8632 bytes --]
On Sun, 25 Sep 2022 03:19:10 +0900 Masahiro Yamada wrote:
> Use the ordinary obj-y syntax to list subdirectories.
>
> Note1:
> Previously, the link order of lib-y depended on CONFIG_MODULES; lib-y
> was linked before drivers-y when CONFIG_MODULES=y, otherwise after
> drivers-y. This was a bug of commit 7273ad2b08f8 ("kbuild: link lib-y
> objects to vmlinux forcibly when CONFIG_MODULES=y"), but it was not a
> big deal after all. Now, all objects listed in lib-y are linked last,
> irrespective of CONFIG_MODULES.
>
> Note2:
> Finally, the single target build in arch/*/lib/ works correctly. There was
> a bug report about this. [1]
>
> $ make ARCH=arm arch/arm/lib/findbit.o
> CALL scripts/checksyscalls.sh
> AS arch/arm/lib/findbit.o
>
> [1]: https://lore.kernel.org/linux-kbuild/YvUQOwL6lD4%2F5%2FU6@shell.armlinux.org.uk/
>
> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
> ---
Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
>
> Changes in v3:
> - Also move libs-y to fix the bug reported by:
> https://lore.kernel.org/linux-kbuild/20220921043946.GA1355561@roeck-us.net/
>
> Kbuild | 24 ++++++++++++++++
> Makefile | 65 ++++++++++++++------------------------------
> scripts/Makefile.lib | 2 ++
> 3 files changed, 46 insertions(+), 45 deletions(-)
>
> diff --git a/Kbuild b/Kbuild
> index 0b9e8a16a621..8a37584d1fd6 100644
> --- a/Kbuild
> +++ b/Kbuild
> @@ -72,3 +72,27 @@ $(atomic-checks): $(obj)/.checked-%: include/linux/atomic/% FORCE
> PHONY += prepare
> prepare: $(offsets-file) missing-syscalls $(atomic-checks)
> @:
> +
> +# Ordinary directory descending
> +# ---------------------------------------------------------------------------
> +
> +obj-y += init/
> +obj-y += usr/
> +obj-y += arch/$(SRCARCH)/
> +obj-y += $(ARCH_CORE)
> +obj-y += kernel/
> +obj-y += certs/
> +obj-y += mm/
> +obj-y += fs/
> +obj-y += ipc/
> +obj-y += security/
> +obj-y += crypto/
> +obj-$(CONFIG_BLOCK) += block/
> +obj-$(CONFIG_IO_URING) += io_uring/
> +obj-y += $(ARCH_LIB)
> +obj-y += drivers/
> +obj-y += sound/
> +obj-$(CONFIG_SAMPLES) += samples/
> +obj-$(CONFIG_NET) += net/
> +obj-y += virt/
> +obj-y += $(ARCH_DRIVERS)
> diff --git a/Makefile b/Makefile
> index eb4bbbc898d0..f793c3b1eaec 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -676,11 +676,8 @@ endif
>
> ifeq ($(KBUILD_EXTMOD),)
> # Objects we will link into vmlinux / subdirs we need to visit
> -core-y := init/ usr/ arch/$(SRCARCH)/
> -drivers-y := drivers/ sound/
> -drivers-$(CONFIG_SAMPLES) += samples/
> -drivers-$(CONFIG_NET) += net/
> -drivers-y += virt/
> +core-y :=
> +drivers-y :=
> libs-y := lib/
> endif # KBUILD_EXTMOD
>
> @@ -1099,33 +1096,24 @@ export MODORDER := $(extmod_prefix)modules.order
> export MODULES_NSDEPS := $(extmod_prefix)modules.nsdeps
>
> ifeq ($(KBUILD_EXTMOD),)
> -core-y += kernel/ certs/ mm/ fs/ ipc/ security/ crypto/
> -core-$(CONFIG_BLOCK) += block/
> -core-$(CONFIG_IO_URING) += io_uring/
>
> -vmlinux-dirs := $(patsubst %/,%,$(filter %/, \
> - $(core-y) $(core-m) $(drivers-y) $(drivers-m) \
> - $(libs-y) $(libs-m)))
> -
> -vmlinux-alldirs := $(sort $(vmlinux-dirs) Documentation . \
> +build-dir := .
> +clean-dirs := $(sort . Documentation \
> $(patsubst %/,%,$(filter %/, $(core-) \
> $(drivers-) $(libs-))))
>
> -build-dirs := $(vmlinux-dirs)
> -clean-dirs := $(vmlinux-alldirs)
> -
> -subdir-modorder := $(addsuffix /modules.order, $(build-dirs))
> -
> +export ARCH_CORE := $(core-y)
> +export ARCH_LIB := $(filter %/, $(libs-y))
> +export ARCH_DRIVERS := $(drivers-y) $(drivers-m)
> # Externally visible symbols (used by link-vmlinux.sh)
> -KBUILD_VMLINUX_OBJS := $(head-y) $(patsubst %/,%/built-in.a, $(core-y))
> -KBUILD_VMLINUX_OBJS += $(addsuffix built-in.a, $(filter %/, $(libs-y)))
> +
> +KBUILD_VMLINUX_OBJS := $(head-y) ./built-in.a
> ifdef CONFIG_MODULES
> KBUILD_VMLINUX_OBJS += $(patsubst %/, %/lib.a, $(filter %/, $(libs-y)))
> KBUILD_VMLINUX_LIBS := $(filter-out %/, $(libs-y))
> else
> KBUILD_VMLINUX_LIBS := $(patsubst %/,%/lib.a, $(libs-y))
> endif
> -KBUILD_VMLINUX_OBJS += $(patsubst %/,%/built-in.a, $(drivers-y))
>
> export KBUILD_VMLINUX_OBJS KBUILD_VMLINUX_LIBS
> export KBUILD_LDS := arch/$(SRCARCH)/kernel/vmlinux.lds
> @@ -1140,7 +1128,7 @@ ifdef CONFIG_TRIM_UNUSED_KSYMS
> # (this can be evaluated only once include/config/auto.conf has been included)
> KBUILD_MODULES := 1
>
> -autoksyms_recursive: descend modules.order
> +autoksyms_recursive: $(build-dir) modules.order
> $(Q)$(CONFIG_SHELL) $(srctree)/scripts/adjust_autoksyms.sh \
> "$(MAKE) -f $(srctree)/Makefile autoksyms_recursive"
> endif
> @@ -1168,7 +1156,7 @@ targets := vmlinux
>
> # The actual objects are generated when descending,
> # make sure no implicit rule kicks in
> -$(sort $(vmlinux-deps) $(subdir-modorder)): descend ;
> +$(sort $(vmlinux-deps)): $(build-dir) ;
>
> filechk_kernel.release = \
> echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
> @@ -1439,13 +1427,6 @@ endif
>
> modules: $(if $(KBUILD_BUILTIN),vmlinux) modules_prepare
>
> -cmd_modules_order = cat $(real-prereqs) > $@
> -
> -modules.order: $(subdir-modorder) FORCE
> - $(call if_changed,modules_order)
> -
> -targets += modules.order
> -
> # Target to prepare building external modules
> modules_prepare: prepare
> $(Q)$(MAKE) $(build)=scripts scripts/module.lds
> @@ -1716,9 +1697,7 @@ else # KBUILD_EXTMOD
> KBUILD_BUILTIN :=
> KBUILD_MODULES := 1
>
> -build-dirs := $(KBUILD_EXTMOD)
> -$(MODORDER): descend
> - @:
> +build-dir := $(KBUILD_EXTMOD)
>
> compile_commands.json: $(extmod_prefix)compile_commands.json
> PHONY += compile_commands.json
> @@ -1756,6 +1735,9 @@ PHONY += modules modules_install modules_prepare
>
> ifdef CONFIG_MODULES
>
> +$(MODORDER): $(build-dir)
> + @:
> +
> modules: modules_check
> $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
>
> @@ -1809,7 +1791,7 @@ single-no-ko := $(filter-out $(single-ko), $(MAKECMDGOALS)) \
>
> $(single-ko): single_modpost
> @:
> -$(single-no-ko): descend
> +$(single-no-ko): $(build-dir)
> @:
>
> # Remove MODORDER when done because it is not the real one.
> @@ -1819,24 +1801,17 @@ single_modpost: $(single-no-ko) modules_prepare
> $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
> $(Q)rm -f $(MODORDER)
>
> -single-goals := $(addprefix $(extmod_prefix), $(single-no-ko))
> -
> -# trim unrelated directories
> -build-dirs := $(foreach d, $(build-dirs), \
> - $(if $(filter $d/%, $(single-goals)), $d))
> +single-goals := $(addprefix $(build-dir)/, $(single-no-ko))
>
> endif
>
> -# Handle descending into subdirectories listed in $(build-dirs)
> # Preset locale variables to speed up the build process. Limit locale
> # tweaks to this spot to avoid wrong language settings when running
> # make menuconfig etc.
> # Error messages still appears in the original language
> -PHONY += descend $(build-dirs)
> -descend: $(build-dirs)
> -$(build-dirs): prepare
> - $(Q)$(MAKE) $(build)=$@ need-builtin=1 need-modorder=1 \
> - $(filter $@/%, $(single-goals))
> +PHONY += $(build-dir)
> +$(build-dir): prepare
> + $(Q)$(MAKE) $(build)=$@ need-builtin=1 need-modorder=1 $(single-goals)
>
> clean-dirs := $(addprefix _clean_, $(clean-dirs))
> PHONY += $(clean-dirs) clean
> diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
> index 3fb6a99e78c4..140dcc3c57bd 100644
> --- a/scripts/Makefile.lib
> +++ b/scripts/Makefile.lib
> @@ -89,6 +89,7 @@ always-y += $(dtb-y)
>
> # Add subdir path
>
> +ifneq ($(obj),.)
> extra-y := $(addprefix $(obj)/,$(extra-y))
> always-y := $(addprefix $(obj)/,$(always-y))
> targets := $(addprefix $(obj)/,$(targets))
> @@ -100,6 +101,7 @@ multi-obj-m := $(addprefix $(obj)/, $(multi-obj-m))
> multi-dtb-y := $(addprefix $(obj)/, $(multi-dtb-y))
> real-dtb-y := $(addprefix $(obj)/, $(real-dtb-y))
> subdir-ym := $(addprefix $(obj)/,$(subdir-ym))
> +endif
>
> # Finds the multi-part object the current object will be linked into.
> # If the object belongs to two or more multi-part objects, list them all.
> --
> 2.34.1
--
epost|xmpp: nicolas@fjasle.eu irc://oftc.net/nsc
↳ gpg: 18ed 52db e34f 860e e9fb c82b 7d97 0932 55a0 ce7f
-- frykten for herren er opphav til kunnskap --
[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 833 bytes --]
^ permalink raw reply [flat|nested] 30+ messages in thread
* Re: [PATCH v3 3/7] kbuild: move .vmlinux.objs rule to Makefile.modpost
2022-09-24 18:19 ` [PATCH v3 3/7] kbuild: move .vmlinux.objs rule to Makefile.modpost Masahiro Yamada
@ 2022-09-28 19:35 ` Nicolas Schier
0 siblings, 0 replies; 30+ messages in thread
From: Nicolas Schier @ 2022-09-28 19:35 UTC (permalink / raw)
To: Masahiro Yamada
Cc: linux-kbuild, linux-kernel, linux-arch, Nick Desaulniers,
Nathan Chancellor
[-- Attachment #1: Type: text/plain, Size: 4046 bytes --]
On Sun, 25 Sep 2022 03:19:11 +0900 Masahiro Yamada wrote:
> .vmlinux.objs is used by modpost, so scripts/Makefile.modpost is
> a better place to generate it.
>
> It is used only when CONFIG_MODVERSIONS=y. It should be guarded
> by "ifdef CONFIG_MODVERSIONS".
>
> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
> ---
Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
> (no changes since v1)
>
> Makefile | 2 +-
> scripts/Makefile.modpost | 30 ++++++++++++++++++++++++++++--
> scripts/link-vmlinux.sh | 18 ------------------
> 3 files changed, 29 insertions(+), 21 deletions(-)
>
> diff --git a/Makefile b/Makefile
> index f793c3b1eaec..92413b6de451 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -1477,7 +1477,7 @@ endif # CONFIG_MODULES
> # Directories & files removed with 'make clean'
> CLEAN_FILES += include/ksym vmlinux.symvers modules-only.symvers \
> modules.builtin modules.builtin.modinfo modules.nsdeps \
> - compile_commands.json .thinlto-cache
> + compile_commands.json .thinlto-cache .vmlinux.objs
>
> # Directories & files removed with 'make mrproper'
> MRPROPER_FILES += include/config include/generated \
> diff --git a/scripts/Makefile.modpost b/scripts/Makefile.modpost
> index 911606496341..04ad00917b2f 100644
> --- a/scripts/Makefile.modpost
> +++ b/scripts/Makefile.modpost
> @@ -57,6 +57,32 @@ vmlinux.symvers: vmlinux.o
>
> __modpost: vmlinux.symvers
>
> +# Generate the list of in-tree objects in vmlinux
> +# ---------------------------------------------------------------------------
> +
> +# This is used to retrieve symbol versions generated by genksyms.
> +ifdef CONFIG_MODVERSIONS
> +vmlinux.symvers: .vmlinux.objs
> +endif
> +
> +# Ignore libgcc.a
> +# Some architectures do '$(CC) --print-libgcc-file-name' to borrow libgcc.a
> +# from the toolchain, but there is no EXPORT_SYMBOL in it.
> +
> +quiet_cmd_vmlinux_objs = GEN $@
> + cmd_vmlinux_objs = \
> + for f in $(real-prereqs); do \
> + case $${f} in \
> + *libgcc.a) ;; \
> + *.a) $(AR) t $${f} ;; \
> + *) echo $${f} ;; \
> + esac \
> + done > $@
> +
> +targets += .vmlinux.objs
> +.vmlinux.objs: $(KBUILD_VMLINUX_OBJS) $(KBUILD_VMLINUX_LIBS) FORCE
> + $(call if_changed,vmlinux_objs)
> +
> else
>
> ifeq ($(KBUILD_EXTMOD),)
> @@ -134,6 +160,8 @@ ifneq ($(KBUILD_MODPOST_NOFINAL),1)
> $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modfinal
> endif
>
> +endif
> +
> PHONY += FORCE
> FORCE:
>
> @@ -141,6 +169,4 @@ existing-targets := $(wildcard $(sort $(targets)))
>
> -include $(foreach f,$(existing-targets),$(dir $(f)).$(notdir $(f)).cmd)
>
> -endif
> -
> .PHONY: $(PHONY)
> diff --git a/scripts/link-vmlinux.sh b/scripts/link-vmlinux.sh
> index 8d982574145a..161bca64e8aa 100755
> --- a/scripts/link-vmlinux.sh
> +++ b/scripts/link-vmlinux.sh
> @@ -199,7 +199,6 @@ cleanup()
> rm -f System.map
> rm -f vmlinux
> rm -f vmlinux.map
> - rm -f .vmlinux.objs
> rm -f .vmlinux.export.c
> }
>
> @@ -218,23 +217,6 @@ fi
> #link vmlinux.o
> ${MAKE} -f "${srctree}/scripts/Makefile.vmlinux_o"
>
> -# Generate the list of in-tree objects in vmlinux
> -#
> -# This is used to retrieve symbol versions generated by genksyms.
> -for f in ${KBUILD_VMLINUX_OBJS} ${KBUILD_VMLINUX_LIBS}; do
> - case ${f} in
> - *libgcc.a)
> - # Some architectures do '$(CC) --print-libgcc-file-name' to
> - # borrow libgcc.a from the toolchain.
> - # There is no EXPORT_SYMBOL in external objects. Ignore this.
> - ;;
> - *.a)
> - ${AR} t ${f} ;;
> - *)
> - echo ${f} ;;
> - esac
> -done > .vmlinux.objs
> -
> # modpost vmlinux.o to check for section mismatches
> ${MAKE} -f "${srctree}/scripts/Makefile.modpost" MODPOST_VMLINUX=1
>
> --
> 2.34.1
--
epost|xmpp: nicolas@fjasle.eu irc://oftc.net/nsc
↳ gpg: 18ed 52db e34f 860e e9fb c82b 7d97 0932 55a0 ce7f
-- frykten for herren er opphav til kunnskap --
[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 833 bytes --]
^ permalink raw reply [flat|nested] 30+ messages in thread
* Re: [PATCH v3 4/7] kbuild: move vmlinux.o rule to the top Makefile
2022-09-24 18:19 ` [PATCH v3 4/7] kbuild: move vmlinux.o rule to the top Makefile Masahiro Yamada
@ 2022-09-28 19:37 ` Nicolas Schier
0 siblings, 0 replies; 30+ messages in thread
From: Nicolas Schier @ 2022-09-28 19:37 UTC (permalink / raw)
To: Masahiro Yamada
Cc: linux-kbuild, linux-kernel, linux-arch, Nick Desaulniers,
Nathan Chancellor
[-- Attachment #1: Type: text/plain, Size: 2026 bytes --]
On Sun, 25 Sep 2022 03:19:12 +0900 Masahiro Yamada wrote:
> Move the build rules of vmlinux.o out of scripts/link-vmlinux.sh to
> clearly separate 1) pre-modpost, 2) modpost, 3) post-modpost stages.
> This will make furture refactoring possible.
s/furture/future/
>
> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
> ---
>
> (no changes since v1)
>
> Makefile | 5 ++++-
> scripts/link-vmlinux.sh | 3 ---
> 2 files changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/Makefile b/Makefile
> index 92413b6de451..b5dfb54b1993 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -1142,6 +1142,9 @@ quiet_cmd_autoksyms_h = GEN $@
> $(autoksyms_h):
> $(call cmd,autoksyms_h)
>
> +vmlinux.o: autoksyms_recursive $(KBUILD_VMLINUX_OBJS) $(KBUILD_VMLINUX_LIBS) FORCE
> + $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.vmlinux_o
> +
> ARCH_POSTLINK := $(wildcard $(srctree)/arch/$(SRCARCH)/Makefile.postlink)
>
> # Final link of vmlinux with optional arch pass after final link
> @@ -1149,7 +1152,7 @@ cmd_link-vmlinux = \
> $(CONFIG_SHELL) $< "$(LD)" "$(KBUILD_LDFLAGS)" "$(LDFLAGS_vmlinux)"; \
> $(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true)
>
> -vmlinux: scripts/link-vmlinux.sh autoksyms_recursive $(vmlinux-deps) FORCE
> +vmlinux: scripts/link-vmlinux.sh vmlinux.o $(KBUILD_LDS) FORCE
> +$(call if_changed_dep,link-vmlinux)
>
> targets := vmlinux
> diff --git a/scripts/link-vmlinux.sh b/scripts/link-vmlinux.sh
> index 161bca64e8aa..07486f90d5e2 100755
> --- a/scripts/link-vmlinux.sh
> +++ b/scripts/link-vmlinux.sh
> @@ -214,9 +214,6 @@ if [ "$1" = "clean" ]; then
> exit 0
> fi
>
> -#link vmlinux.o
> -${MAKE} -f "${srctree}/scripts/Makefile.vmlinux_o"
> -
> # modpost vmlinux.o to check for section mismatches
> ${MAKE} -f "${srctree}/scripts/Makefile.modpost" MODPOST_VMLINUX=1
>
> --
> 2.34.1
Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 833 bytes --]
^ permalink raw reply [flat|nested] 30+ messages in thread
* Re: [PATCH v3 5/7] kbuild: unify two modpost invocations
2022-09-24 18:19 ` [PATCH v3 5/7] kbuild: unify two modpost invocations Masahiro Yamada
@ 2022-09-28 19:59 ` Nicolas Schier
2022-09-28 21:05 ` Masahiro Yamada
0 siblings, 1 reply; 30+ messages in thread
From: Nicolas Schier @ 2022-09-28 19:59 UTC (permalink / raw)
To: Masahiro Yamada
Cc: linux-kbuild, linux-kernel, linux-arch, Nick Desaulniers,
Nathan Chancellor
[-- Attachment #1: Type: text/plain, Size: 11175 bytes --]
On Sun, 25 Sep 2022 03:19:13 +0900 Masahiro Yamada wrote:
> Currently, modpost is executed twice; first for vmlinux, second
> for modules.
>
> This commit merges them.
>
> Current build flow
> ==================
>
> 1) build obj-y and obj-m objects
> 2) link vmlinux.o
> 3) modpost for vmlinux
> 4) link vmlinux
> 5) modpost for modules
> 6) link modules (*.ko)
>
> The build steps 1) through 6) are serialized, that is, modules are
> built after vmlinux. You do not get benefits of parallel builds when
> scripts/link-vmlinux.sh is being run.
>
> New build flow
> ==============
>
> 1) build obj-y and obj-m objects
> 2) link vmlinux.o
> 3) modpost for vmlinux and modules
> 4a) link vmlinux
> 4b) link modules (*.ko)
>
> In the new build flow, modpost is invoked just once.
>
> vmlinux and modules are built in parallel. One exception is
> CONFIG_DEBUG_INFO_BTF_MODULES=y, where modules depend on vmlinux.
>
> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
> ---
>
> (no changes since v1)
>
> Makefile | 30 ++++++++++---
> scripts/Makefile.modfinal | 2 +-
> scripts/Makefile.modpost | 93 ++++++++++++---------------------------
> scripts/link-vmlinux.sh | 3 --
> 4 files changed, 53 insertions(+), 75 deletions(-)
>
> diff --git a/Makefile b/Makefile
> index b5dfb54b1993..cf9d7b1d8c14 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -1152,7 +1152,7 @@ cmd_link-vmlinux = \
> $(CONFIG_SHELL) $< "$(LD)" "$(KBUILD_LDFLAGS)" "$(LDFLAGS_vmlinux)"; \
> $(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true)
>
> -vmlinux: scripts/link-vmlinux.sh vmlinux.o $(KBUILD_LDS) FORCE
> +vmlinux: scripts/link-vmlinux.sh vmlinux.o $(KBUILD_LDS) modpost FORCE
> +$(call if_changed_dep,link-vmlinux)
>
> targets := vmlinux
> @@ -1428,7 +1428,13 @@ endif
> # Build modules
> #
>
> -modules: $(if $(KBUILD_BUILTIN),vmlinux) modules_prepare
> +# *.ko are usually independent of vmlinux, but CONFIG_DEBUG_INFOBTF_MODULES
> +# is an exception.
> +ifdef CONFIG_DEBUG_INFO_BTF_MODULES
> +modules: vmlinux
> +endif
> +
> +modules: modules_prepare
>
> # Target to prepare building external modules
> modules_prepare: prepare
> @@ -1741,8 +1747,12 @@ ifdef CONFIG_MODULES
> $(MODORDER): $(build-dir)
> @:
>
> -modules: modules_check
> - $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
> +# KBUILD_MODPOST_NOFINAL can be set to skip the final link of modules.
> +# This is solely useful to speed up test compiles.
> +modules: modpost
> +ifneq ($(KBUILD_MODPOST_NOFINAL),1)
> + $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modfinal
> +endif
>
> PHONY += modules_check
> modules_check: $(MODORDER)
> @@ -1773,6 +1783,11 @@ KBUILD_MODULES :=
>
> endif # CONFIG_MODULES
>
> +PHONY += modpost
> +modpost: $(if $(single-build),, $(if $(KBUILD_BUILTIN), vmlinux.o)) \
> + $(if $(KBUILD_MODULES), modules_check)
> + $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
> +
> # Single targets
> # ---------------------------------------------------------------------------
> # To build individual files in subdirectories, you can do like this:
> @@ -1792,16 +1807,19 @@ single-ko := $(sort $(filter %.ko, $(MAKECMDGOALS)))
> single-no-ko := $(filter-out $(single-ko), $(MAKECMDGOALS)) \
> $(foreach x, o mod, $(patsubst %.ko, %.$x, $(single-ko)))
>
> -$(single-ko): single_modpost
> +$(single-ko): single_modules
> @:
> $(single-no-ko): $(build-dir)
> @:
>
> # Remove MODORDER when done because it is not the real one.
> PHONY += single_modpost
PHONY += single_modules
Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
> -single_modpost: $(single-no-ko) modules_prepare
> +single_modules: $(single-no-ko) modules_prepare
> $(Q){ $(foreach m, $(single-ko), echo $(extmod_prefix)$m;) } > $(MODORDER)
> $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
> +ifneq ($(KBUILD_MODPOST_NOFINAL),1)
> + $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modfinal
> +endif
> $(Q)rm -f $(MODORDER)
>
> single-goals := $(addprefix $(build-dir)/, $(single-no-ko))
> diff --git a/scripts/Makefile.modfinal b/scripts/Makefile.modfinal
> index 35100e981f4a..a3cf9e3647c9 100644
> --- a/scripts/Makefile.modfinal
> +++ b/scripts/Makefile.modfinal
> @@ -55,7 +55,7 @@ if_changed_except = $(if $(call newer_prereqs_except,$(2))$(cmd-check), \
> printf '%s\n' 'cmd_$@ := $(make-cmd)' > $(dot-target).cmd, @:)
>
> # Re-generate module BTFs if either module's .ko or vmlinux changed
> -$(modules): %.ko: %.o %.mod.o scripts/module.lds $(if $(KBUILD_BUILTIN),vmlinux) FORCE
> +$(modules): %.ko: %.o %.mod.o scripts/module.lds $(and $(CONFIG_DEBUG_INFO_BTF_MODULES),$(KBUILD_BUILTIN),vmlinux) FORCE
> +$(call if_changed_except,ld_ko_o,vmlinux)
> ifdef CONFIG_DEBUG_INFO_BTF_MODULES
> +$(if $(newer-prereqs),$(call cmd,btf_ko))
> diff --git a/scripts/Makefile.modpost b/scripts/Makefile.modpost
> index 04ad00917b2f..2daf760eeb25 100644
> --- a/scripts/Makefile.modpost
> +++ b/scripts/Makefile.modpost
> @@ -32,9 +32,6 @@
> # Step 4 is solely used to allow module versioning in external modules,
> # where the CRC of each module is retrieved from the Module.symvers file.
>
> -# KBUILD_MODPOST_NOFINAL can be set to skip the final link of modules.
> -# This is solely useful to speed up test compiles
> -
> PHONY := __modpost
> __modpost:
>
> @@ -45,24 +42,23 @@ MODPOST = scripts/mod/modpost \
> $(if $(CONFIG_MODVERSIONS),-m) \
> $(if $(CONFIG_MODULE_SRCVERSION_ALL),-a) \
> $(if $(CONFIG_SECTION_MISMATCH_WARN_ONLY),,-E) \
> + $(if $(KBUILD_NSDEPS),-d $(MODULES_NSDEPS)) \
> + $(if $(CONFIG_MODULE_ALLOW_MISSING_NAMESPACE_IMPORTS)$(KBUILD_NSDEPS),-N) \
> -o $@
>
> -ifdef MODPOST_VMLINUX
> -
> -quiet_cmd_modpost = MODPOST $@
> - cmd_modpost = $(MODPOST) $<
> -
> -vmlinux.symvers: vmlinux.o
> - $(call cmd,modpost)
> +# 'make -i -k' ignores compile errors, and builds as many modules as possible.
> +ifneq ($(findstring i,$(filter-out --%,$(MAKEFLAGS))),)
> +MODPOST += -n
> +endif
>
> -__modpost: vmlinux.symvers
> +ifeq ($(KBUILD_EXTMOD),)
>
> # Generate the list of in-tree objects in vmlinux
> # ---------------------------------------------------------------------------
>
> # This is used to retrieve symbol versions generated by genksyms.
> ifdef CONFIG_MODVERSIONS
> -vmlinux.symvers: .vmlinux.objs
> +vmlinux.symvers Module.symvers: .vmlinux.objs
> endif
>
> # Ignore libgcc.a
> @@ -83,24 +79,12 @@ targets += .vmlinux.objs
> .vmlinux.objs: $(KBUILD_VMLINUX_OBJS) $(KBUILD_VMLINUX_LIBS) FORCE
> $(call if_changed,vmlinux_objs)
>
> -else
> -
> -ifeq ($(KBUILD_EXTMOD),)
> -
> -input-symdump := vmlinux.symvers
> -output-symdump := modules-only.symvers
> -
> -quiet_cmd_cat = GEN $@
> - cmd_cat = cat $(real-prereqs) > $@
> -
> -ifneq ($(wildcard vmlinux.symvers),)
> -
> -__modpost: Module.symvers
> -Module.symvers: vmlinux.symvers modules-only.symvers FORCE
> - $(call if_changed,cat)
> -
> -targets += Module.symvers
> +vmlinux.o-if-present := $(wildcard vmlinux.o)
> +output-symdump := vmlinux.symvers
>
> +ifdef KBUILD_MODULES
> +output-symdump := $(if $(vmlinux.o-if-present), Module.symvers, modules-only.symvers)
> +missing-input := $(filter-out $(vmlinux.o-if-present),vmlinux.o)
> endif
>
> else
> @@ -112,56 +96,35 @@ src := $(obj)
> # Include the module's Makefile to find KBUILD_EXTRA_SYMBOLS
> include $(or $(wildcard $(src)/Kbuild), $(src)/Makefile)
>
> -# modpost option for external modules
> -MODPOST += -e
> -
> -input-symdump := Module.symvers $(KBUILD_EXTRA_SYMBOLS)
> +module.symvers-if-present := $(wildcard Module.symvers)
> output-symdump := $(KBUILD_EXTMOD)/Module.symvers
> +missing-input := $(filter-out $(module.symvers-if-present), Module.symvers)
>
> -endif
> -
> -existing-input-symdump := $(wildcard $(input-symdump))
> -
> -# modpost options for modules (both in-kernel and external)
> -MODPOST += \
> - $(addprefix -i ,$(existing-input-symdump)) \
> - $(if $(KBUILD_NSDEPS),-d $(MODULES_NSDEPS)) \
> - $(if $(CONFIG_MODULE_ALLOW_MISSING_NAMESPACE_IMPORTS)$(KBUILD_NSDEPS),-N)
> -
> -# 'make -i -k' ignores compile errors, and builds as many modules as possible.
> -ifneq ($(findstring i,$(filter-out --%,$(MAKEFLAGS))),)
> -MODPOST += -n
> -endif
> +MODPOST += -e $(addprefix -i ,$(module.symvers-if-present) $(KBUILD_EXTRA_SYMBOLS))
>
> -# Clear VPATH to not search for *.symvers in $(srctree). Check only $(objtree).
> -VPATH :=
> -$(input-symdump):
> - @echo >&2 'WARNING: Symbol version dump "$@" is missing.'
> - @echo >&2 ' Modules may not have dependencies or modversions.'
> - @echo >&2 ' You may get many unresolved symbol warnings.'
> +endif # ($(KBUILD_EXTMOD),)
>
> -# KBUILD_MODPOST_WARN can be set to avoid error out in case of undefined symbols
> -ifneq ($(KBUILD_MODPOST_WARN)$(filter-out $(existing-input-symdump), $(input-symdump)),)
> +ifneq ($(KBUILD_MODPOST_WARN)$(missing-input),)
> MODPOST += -w
> endif
>
> +modorder-if-needed := $(if $(KBUILD_MODULES), $(MODORDER))
> +
> # Read out modules.order to pass in modpost.
> # Otherwise, allmodconfig would fail with "Argument list too long".
> quiet_cmd_modpost = MODPOST $@
> - cmd_modpost = sed 's/ko$$/o/' $< | $(MODPOST) -T -
> -
> -$(output-symdump): $(MODORDER) $(input-symdump) FORCE
> - $(call if_changed,modpost)
> + cmd_modpost = \
> + $(if $(missing-input), \
> + echo >&2 "WARNING: $(missing-input) is missing."; \
> + echo >&2 " Modules may not have dependencies or modversions."; \
> + echo >&2 " You may get many unresolved symbol warnings.";) \
> + sed 's/ko$$/o/' $(or $(modorder-if-needed), /dev/null) | $(MODPOST) $(vmlinux.o-if-present) -T -
>
> targets += $(output-symdump)
> +$(output-symdump): $(modorder-if-needed) $(vmlinux.o-if-present) $(moudle.symvers-if-present) FORCE
> + $(call if_changed,modpost)
>
> __modpost: $(output-symdump)
> -ifneq ($(KBUILD_MODPOST_NOFINAL),1)
> - $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modfinal
> -endif
> -
> -endif
> -
> PHONY += FORCE
> FORCE:
>
> diff --git a/scripts/link-vmlinux.sh b/scripts/link-vmlinux.sh
> index 07486f90d5e2..6a197d8a88ac 100755
> --- a/scripts/link-vmlinux.sh
> +++ b/scripts/link-vmlinux.sh
> @@ -214,9 +214,6 @@ if [ "$1" = "clean" ]; then
> exit 0
> fi
>
> -# modpost vmlinux.o to check for section mismatches
> -${MAKE} -f "${srctree}/scripts/Makefile.modpost" MODPOST_VMLINUX=1
> -
> info MODINFO modules.builtin.modinfo
> ${OBJCOPY} -j .modinfo -O binary vmlinux.o modules.builtin.modinfo
> info GEN modules.builtin
> --
> 2.34.1
--
epost|xmpp: nicolas@fjasle.eu irc://oftc.net/nsc
↳ gpg: 18ed 52db e34f 860e e9fb c82b 7d97 0932 55a0 ce7f
-- frykten for herren er opphav til kunnskap --
[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 833 bytes --]
^ permalink raw reply [flat|nested] 30+ messages in thread
* Re: [PATCH v3 6/7] kbuild: use obj-y instead extra-y for objects placed at the head
2022-09-24 18:19 ` [PATCH v3 6/7] kbuild: use obj-y instead extra-y for objects placed at the head Masahiro Yamada
@ 2022-09-28 20:15 ` Nicolas Schier
2022-10-24 18:24 ` Jiri Slaby
1 sibling, 0 replies; 30+ messages in thread
From: Nicolas Schier @ 2022-09-28 20:15 UTC (permalink / raw)
To: Masahiro Yamada
Cc: linux-kbuild, linux-kernel, linux-arch, Nick Desaulniers,
Nathan Chancellor
[-- Attachment #1: Type: text/plain, Size: 27842 bytes --]
On Sun, 25 Sep 2022 03:19:14 +0900 Masahiro Yamada wrote:
> The objects placed at the head of vmlinux need special treatments:
>
> - arch/$(SRCARCH)/Makefile adds them to head-y in order to place
> them before other archives in the linker command line.
>
> - arch/$(SRCARCH)/kernel/Makefile adds them to extra-y instead of
> obj-y to avoid them going into built-in.a.
>
> This commit gets rid of the latter.
>
> Create vmlinux.a to collect all the objects that are unconditionally
> linked to vmlinux. The objects listed in head-y are moved to the head
> of vmlinux.a by using 'ar m'.
>
> With this, arch/$(SRCARCH)/kernel/Makefile can consistently use obj-y
> for builtin objects.
>
> There is no *.o that is directly linked to vmlinux. Drop unneeded code
> in scripts/clang-tools/gen_compile_commands.py.
>
> $(AR) mPi needs 'T' to workaround the llvm-ar bug. The fix was suggested
> by Nathan Chancellor [1].
>
> [1]: https://lore.kernel.org/llvm/YyjjT5gQ2hGMH0ni@dev-arch.thelio-3990X/
>
> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
> ---
Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
> Changes in v3:
> - Fix build error for m68k
> - Fix the bug for llvm-ar <= 14
>
> Documentation/kbuild/makefiles.rst | 18 +---------------
> Makefile | 23 ++++++++++++++++-----
> arch/alpha/kernel/Makefile | 4 ++--
> arch/arc/kernel/Makefile | 4 ++--
> arch/arm/kernel/Makefile | 4 ++--
> arch/arm64/kernel/Makefile | 4 ++--
> arch/csky/kernel/Makefile | 4 ++--
> arch/hexagon/kernel/Makefile | 3 ++-
> arch/ia64/kernel/Makefile | 4 ++--
> arch/loongarch/kernel/Makefile | 4 ++--
> arch/m68k/68000/Makefile | 2 +-
> arch/m68k/coldfire/Makefile | 2 +-
> arch/m68k/kernel/Makefile | 23 +++++++++++----------
> arch/microblaze/kernel/Makefile | 4 ++--
> arch/mips/kernel/Makefile | 4 ++--
> arch/nios2/kernel/Makefile | 2 +-
> arch/openrisc/kernel/Makefile | 4 ++--
> arch/parisc/kernel/Makefile | 4 ++--
> arch/powerpc/kernel/Makefile | 20 +++++++++---------
> arch/riscv/kernel/Makefile | 2 +-
> arch/s390/kernel/Makefile | 4 ++--
> arch/sh/kernel/Makefile | 4 ++--
> arch/sparc/kernel/Makefile | 3 +--
> arch/x86/kernel/Makefile | 10 ++++-----
> arch/xtensa/kernel/Makefile | 4 ++--
> scripts/Makefile.modpost | 5 ++---
> scripts/Makefile.vmlinux_o | 6 +++---
> scripts/clang-tools/gen_compile_commands.py | 19 +----------------
> scripts/link-vmlinux.sh | 10 ++++-----
> 29 files changed, 91 insertions(+), 113 deletions(-)
>
> diff --git a/Documentation/kbuild/makefiles.rst b/Documentation/kbuild/makefiles.rst
> index ee7e3ea1fbe1..5a6a8426cc97 100644
> --- a/Documentation/kbuild/makefiles.rst
> +++ b/Documentation/kbuild/makefiles.rst
> @@ -340,19 +340,7 @@ more details, with real examples.
>
> Examples are:
>
> - 1) head objects
> -
> - Some objects must be placed at the head of vmlinux. They are
> - directly linked to vmlinux without going through built-in.a
> - A typical use-case is an object that contains the entry point.
> -
> - arch/$(SRCARCH)/Makefile should specify such objects as head-y.
> -
> - Discussion:
> - Given that we can control the section order in the linker script,
> - why do we need head-y?
> -
> - 2) vmlinux linker script
> + 1) vmlinux linker script
>
> The linker script for vmlinux is located at
> arch/$(SRCARCH)/kernel/vmlinux.lds
> @@ -360,10 +348,6 @@ more details, with real examples.
> Example::
>
> # arch/x86/kernel/Makefile
> - extra-y := head_$(BITS).o
> - extra-y += head$(BITS).o
> - extra-y += ebda.o
> - extra-y += platform-quirks.o
> extra-y += vmlinux.lds
>
> $(extra-y) should only contain targets needed for vmlinux.
> diff --git a/Makefile b/Makefile
> index cf9d7b1d8c14..a8c19f92ac9e 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -645,6 +645,8 @@ else
> __all: modules
> endif
>
> +targets :=
> +
> # Decide whether to build built-in, modular, or both.
> # Normally, just do built-in.
>
> @@ -1107,7 +1109,7 @@ export ARCH_LIB := $(filter %/, $(libs-y))
> export ARCH_DRIVERS := $(drivers-y) $(drivers-m)
> # Externally visible symbols (used by link-vmlinux.sh)
>
> -KBUILD_VMLINUX_OBJS := $(head-y) ./built-in.a
> +KBUILD_VMLINUX_OBJS := ./built-in.a
> ifdef CONFIG_MODULES
> KBUILD_VMLINUX_OBJS += $(patsubst %/, %/lib.a, $(filter %/, $(libs-y)))
> KBUILD_VMLINUX_LIBS := $(filter-out %/, $(libs-y))
> @@ -1115,7 +1117,7 @@ else
> KBUILD_VMLINUX_LIBS := $(patsubst %/,%/lib.a, $(libs-y))
> endif
>
> -export KBUILD_VMLINUX_OBJS KBUILD_VMLINUX_LIBS
> +export KBUILD_VMLINUX_LIBS
> export KBUILD_LDS := arch/$(SRCARCH)/kernel/vmlinux.lds
>
> vmlinux-deps := $(KBUILD_LDS) $(KBUILD_VMLINUX_OBJS) $(KBUILD_VMLINUX_LIBS)
> @@ -1142,7 +1144,18 @@ quiet_cmd_autoksyms_h = GEN $@
> $(autoksyms_h):
> $(call cmd,autoksyms_h)
>
> -vmlinux.o: autoksyms_recursive $(KBUILD_VMLINUX_OBJS) $(KBUILD_VMLINUX_LIBS) FORCE
> +# '$(AR) mPi' needs 'T' to workaround the bug of llvm-ar <= 14
> +quiet_cmd_ar_vmlinux.a = AR $@
> + cmd_ar_vmlinux.a = \
> + rm -f $@; \
> + $(AR) cDPrST $@ $(KBUILD_VMLINUX_OBJS); \
> + $(AR) mPiT $$($(AR) t $@ | head -n1) $@ $(head-y)
> +
> +targets += vmlinux.a
> +vmlinux.a: $(KBUILD_VMLINUX_OBJS) FORCE
> + $(call if_changed,ar_vmlinux.a)
> +
> +vmlinux.o: autoksyms_recursive vmlinux.a $(KBUILD_VMLINUX_LIBS) FORCE
> $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.vmlinux_o
>
> ARCH_POSTLINK := $(wildcard $(srctree)/arch/$(SRCARCH)/Makefile.postlink)
> @@ -1155,7 +1168,7 @@ cmd_link-vmlinux = \
> vmlinux: scripts/link-vmlinux.sh vmlinux.o $(KBUILD_LDS) modpost FORCE
> +$(call if_changed_dep,link-vmlinux)
>
> -targets := vmlinux
> +targets += vmlinux
>
> # The actual objects are generated when descending,
> # make sure no implicit rule kicks in
> @@ -1880,7 +1893,7 @@ quiet_cmd_gen_compile_commands = GEN $@
> cmd_gen_compile_commands = $(PYTHON3) $< -a $(AR) -o $@ $(filter-out $<, $(real-prereqs))
>
> $(extmod_prefix)compile_commands.json: scripts/clang-tools/gen_compile_commands.py \
> - $(if $(KBUILD_EXTMOD),,$(KBUILD_VMLINUX_OBJS) $(KBUILD_VMLINUX_LIBS)) \
> + $(if $(KBUILD_EXTMOD),, vmlinux.a $(KBUILD_VMLINUX_LIBS)) \
> $(if $(CONFIG_MODULES), $(MODORDER)) FORCE
> $(call if_changed,gen_compile_commands)
>
> diff --git a/arch/alpha/kernel/Makefile b/arch/alpha/kernel/Makefile
> index 5a74581bf0ee..5a5b0a8b7c6a 100644
> --- a/arch/alpha/kernel/Makefile
> +++ b/arch/alpha/kernel/Makefile
> @@ -3,11 +3,11 @@
> # Makefile for the linux kernel.
> #
>
> -extra-y := head.o vmlinux.lds
> +extra-y := vmlinux.lds
> asflags-y := $(KBUILD_CFLAGS)
> ccflags-y := -Wno-sign-compare
>
> -obj-y := entry.o traps.o process.o osf_sys.o irq.o \
> +obj-y := head.o entry.o traps.o process.o osf_sys.o irq.o \
> irq_alpha.o signal.o setup.o ptrace.o time.o \
> systbls.o err_common.o io.o bugs.o
>
> diff --git a/arch/arc/kernel/Makefile b/arch/arc/kernel/Makefile
> index 8c4fc4b54c14..0723d888ac44 100644
> --- a/arch/arc/kernel/Makefile
> +++ b/arch/arc/kernel/Makefile
> @@ -3,7 +3,7 @@
> # Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
> #
>
> -obj-y := arcksyms.o setup.o irq.o reset.o ptrace.o process.o devtree.o
> +obj-y := head.o arcksyms.o setup.o irq.o reset.o ptrace.o process.o devtree.o
> obj-y += signal.o traps.o sys.o troubleshoot.o stacktrace.o disasm.o
> obj-$(CONFIG_ISA_ARCOMPACT) += entry-compact.o intc-compact.o
> obj-$(CONFIG_ISA_ARCV2) += entry-arcv2.o intc-arcv2.o
> @@ -31,4 +31,4 @@ else
> obj-y += ctx_sw_asm.o
> endif
>
> -extra-y := vmlinux.lds head.o
> +extra-y := vmlinux.lds
> diff --git a/arch/arm/kernel/Makefile b/arch/arm/kernel/Makefile
> index 553866751e1a..8feaa3217ec5 100644
> --- a/arch/arm/kernel/Makefile
> +++ b/arch/arm/kernel/Makefile
> @@ -89,7 +89,7 @@ obj-$(CONFIG_VDSO) += vdso.o
> obj-$(CONFIG_EFI) += efi.o
> obj-$(CONFIG_PARAVIRT) += paravirt.o
>
> -head-y := head$(MMUEXT).o
> +obj-y += head$(MMUEXT).o
> obj-$(CONFIG_DEBUG_LL) += debug.o
> obj-$(CONFIG_EARLY_PRINTK) += early_printk.o
> obj-$(CONFIG_ARM_PATCH_PHYS_VIRT) += phys2virt.o
> @@ -109,4 +109,4 @@ obj-$(CONFIG_HAVE_ARM_SMCCC) += smccc-call.o
>
> obj-$(CONFIG_GENERIC_CPU_VULNERABILITIES) += spectre.o
>
> -extra-y := $(head-y) vmlinux.lds
> +extra-y := vmlinux.lds
> diff --git a/arch/arm64/kernel/Makefile b/arch/arm64/kernel/Makefile
> index 1add7b01efa7..b619ff207a57 100644
> --- a/arch/arm64/kernel/Makefile
> +++ b/arch/arm64/kernel/Makefile
> @@ -85,8 +85,8 @@ $(obj)/vdso-wrap.o: $(obj)/vdso/vdso.so
> $(obj)/vdso32-wrap.o: $(obj)/vdso32/vdso.so
>
> obj-y += probes/
> -head-y := head.o
> -extra-y += $(head-y) vmlinux.lds
> +obj-y += head.o
> +extra-y += vmlinux.lds
>
> ifeq ($(CONFIG_DEBUG_EFI),y)
> AFLAGS_head.o += -DVMLINUX_PATH="\"$(realpath $(objtree)/vmlinux)\""
> diff --git a/arch/csky/kernel/Makefile b/arch/csky/kernel/Makefile
> index 6f14c924b20d..8a868316b912 100644
> --- a/arch/csky/kernel/Makefile
> +++ b/arch/csky/kernel/Makefile
> @@ -1,7 +1,7 @@
> # SPDX-License-Identifier: GPL-2.0-only
> -extra-y := head.o vmlinux.lds
> +extra-y := vmlinux.lds
>
> -obj-y += entry.o atomic.o signal.o traps.o irq.o time.o vdso.o vdso/
> +obj-y += head.o entry.o atomic.o signal.o traps.o irq.o time.o vdso.o vdso/
> obj-y += power.o syscall.o syscall_table.o setup.o io.o
> obj-y += process.o cpu-probe.o ptrace.o stacktrace.o
> obj-y += probes/
> diff --git a/arch/hexagon/kernel/Makefile b/arch/hexagon/kernel/Makefile
> index fae3dce32fde..e73cb321630e 100644
> --- a/arch/hexagon/kernel/Makefile
> +++ b/arch/hexagon/kernel/Makefile
> @@ -1,6 +1,7 @@
> # SPDX-License-Identifier: GPL-2.0
> -extra-y := head.o vmlinux.lds
> +extra-y := vmlinux.lds
>
> +obj-y += head.o
> obj-$(CONFIG_SMP) += smp.o
>
> obj-y += setup.o irq_cpu.o traps.o syscalltab.o signal.o time.o
> diff --git a/arch/ia64/kernel/Makefile b/arch/ia64/kernel/Makefile
> index 08d4a2ba0652..4a1fcb121dda 100644
> --- a/arch/ia64/kernel/Makefile
> +++ b/arch/ia64/kernel/Makefile
> @@ -7,9 +7,9 @@ ifdef CONFIG_DYNAMIC_FTRACE
> CFLAGS_REMOVE_ftrace.o = -pg
> endif
>
> -extra-y := head.o vmlinux.lds
> +extra-y := vmlinux.lds
>
> -obj-y := entry.o efi.o efi_stub.o gate-data.o fsys.o irq.o irq_ia64.o \
> +obj-y := head.o entry.o efi.o efi_stub.o gate-data.o fsys.o irq.o irq_ia64.o \
> irq_lsapic.o ivt.o pal.o patch.o process.o ptrace.o sal.o \
> salinfo.o setup.o signal.o sys_ia64.o time.o traps.o unaligned.o \
> unwind.o mca.o mca_asm.o topology.o dma-mapping.o iosapic.o acpi.o \
> diff --git a/arch/loongarch/kernel/Makefile b/arch/loongarch/kernel/Makefile
> index e5be17009fe8..6c33b5c45573 100644
> --- a/arch/loongarch/kernel/Makefile
> +++ b/arch/loongarch/kernel/Makefile
> @@ -3,9 +3,9 @@
> # Makefile for the Linux/LoongArch kernel.
> #
>
> -extra-y := head.o vmlinux.lds
> +extra-y := vmlinux.lds
>
> -obj-y += cpu-probe.o cacheinfo.o env.o setup.o entry.o genex.o \
> +obj-y += head.o cpu-probe.o cacheinfo.o env.o setup.o entry.o genex.o \
> traps.o irq.o idle.o process.o dma.o mem.o io.o reset.o switch.o \
> elf.o syscall.o signal.o time.o topology.o inst.o ptrace.o vdso.o
>
> diff --git a/arch/m68k/68000/Makefile b/arch/m68k/68000/Makefile
> index 674541fdf5b8..279560add577 100644
> --- a/arch/m68k/68000/Makefile
> +++ b/arch/m68k/68000/Makefile
> @@ -17,4 +17,4 @@ obj-$(CONFIG_DRAGEN2) += dragen2.o
> obj-$(CONFIG_UCSIMM) += ucsimm.o
> obj-$(CONFIG_UCDIMM) += ucsimm.o
>
> -extra-y := head.o
> +obj-y += head.o
> diff --git a/arch/m68k/coldfire/Makefile b/arch/m68k/coldfire/Makefile
> index 9419a6c1f036..c56bc0dc7f2e 100644
> --- a/arch/m68k/coldfire/Makefile
> +++ b/arch/m68k/coldfire/Makefile
> @@ -45,4 +45,4 @@ obj-$(CONFIG_STMARK2) += stmark2.o
> obj-$(CONFIG_PCI) += pci.o
>
> obj-y += gpio.o
> -extra-y := head.o
> +obj-y += head.o
> diff --git a/arch/m68k/kernel/Makefile b/arch/m68k/kernel/Makefile
> index c0833da6a2ca..af015447dfb4 100644
> --- a/arch/m68k/kernel/Makefile
> +++ b/arch/m68k/kernel/Makefile
> @@ -3,19 +3,20 @@
> # Makefile for the linux kernel.
> #
>
> -extra-$(CONFIG_AMIGA) := head.o
> -extra-$(CONFIG_ATARI) := head.o
> -extra-$(CONFIG_MAC) := head.o
> -extra-$(CONFIG_APOLLO) := head.o
> -extra-$(CONFIG_VME) := head.o
> -extra-$(CONFIG_HP300) := head.o
> -extra-$(CONFIG_Q40) := head.o
> -extra-$(CONFIG_SUN3X) := head.o
> -extra-$(CONFIG_VIRT) := head.o
> -extra-$(CONFIG_SUN3) := sun3-head.o
> extra-y += vmlinux.lds
>
> -obj-y := entry.o irq.o module.o process.o ptrace.o
> +obj-$(CONFIG_AMIGA) := head.o
> +obj-$(CONFIG_ATARI) := head.o
> +obj-$(CONFIG_MAC) := head.o
> +obj-$(CONFIG_APOLLO) := head.o
> +obj-$(CONFIG_VME) := head.o
> +obj-$(CONFIG_HP300) := head.o
> +obj-$(CONFIG_Q40) := head.o
> +obj-$(CONFIG_SUN3X) := head.o
> +obj-$(CONFIG_VIRT) := head.o
> +obj-$(CONFIG_SUN3) := sun3-head.o
> +
> +obj-y += entry.o irq.o module.o process.o ptrace.o
> obj-y += setup.o signal.o sys_m68k.o syscalltable.o time.o traps.o
>
> obj-$(CONFIG_MMU_MOTOROLA) += ints.o vectors.o
> diff --git a/arch/microblaze/kernel/Makefile b/arch/microblaze/kernel/Makefile
> index 15a20eb814ce..4393bee64eaf 100644
> --- a/arch/microblaze/kernel/Makefile
> +++ b/arch/microblaze/kernel/Makefile
> @@ -12,9 +12,9 @@ CFLAGS_REMOVE_ftrace.o = -pg
> CFLAGS_REMOVE_process.o = -pg
> endif
>
> -extra-y := head.o vmlinux.lds
> +extra-y := vmlinux.lds
>
> -obj-y += dma.o exceptions.o \
> +obj-y += head.o dma.o exceptions.o \
> hw_exception_handler.o irq.o \
> process.o prom.o ptrace.o \
> reset.o setup.o signal.o sys_microblaze.o timer.o traps.o unwind.o
> diff --git a/arch/mips/kernel/Makefile b/arch/mips/kernel/Makefile
> index 7c96282bff2e..5d1addac5e28 100644
> --- a/arch/mips/kernel/Makefile
> +++ b/arch/mips/kernel/Makefile
> @@ -3,9 +3,9 @@
> # Makefile for the Linux/MIPS kernel.
> #
>
> -extra-y := head.o vmlinux.lds
> +extra-y := vmlinux.lds
>
> -obj-y += branch.o cmpxchg.o elf.o entry.o genex.o idle.o irq.o \
> +obj-y += head.o branch.o cmpxchg.o elf.o entry.o genex.o idle.o irq.o \
> process.o prom.o ptrace.o reset.o setup.o signal.o \
> syscall.o time.o topology.o traps.o unaligned.o watch.o \
> vdso.o cacheinfo.o
> diff --git a/arch/nios2/kernel/Makefile b/arch/nios2/kernel/Makefile
> index 0b645e1e3158..78a913181fa1 100644
> --- a/arch/nios2/kernel/Makefile
> +++ b/arch/nios2/kernel/Makefile
> @@ -3,9 +3,9 @@
> # Makefile for the nios2 linux kernel.
> #
>
> -extra-y += head.o
> extra-y += vmlinux.lds
>
> +obj-y += head.o
> obj-y += cpuinfo.o
> obj-y += entry.o
> obj-y += insnemu.o
> diff --git a/arch/openrisc/kernel/Makefile b/arch/openrisc/kernel/Makefile
> index 2d172e79f58d..79129161f3e0 100644
> --- a/arch/openrisc/kernel/Makefile
> +++ b/arch/openrisc/kernel/Makefile
> @@ -3,9 +3,9 @@
> # Makefile for the linux kernel.
> #
>
> -extra-y := head.o vmlinux.lds
> +extra-y := vmlinux.lds
>
> -obj-y := setup.o or32_ksyms.o process.o dma.o \
> +obj-y := head.o setup.o or32_ksyms.o process.o dma.o \
> traps.o time.o irq.o entry.o ptrace.o signal.o \
> sys_call_table.o unwinder.o
>
> diff --git a/arch/parisc/kernel/Makefile b/arch/parisc/kernel/Makefile
> index d0bfac89a842..3d138c9cf9ce 100644
> --- a/arch/parisc/kernel/Makefile
> +++ b/arch/parisc/kernel/Makefile
> @@ -3,9 +3,9 @@
> # Makefile for arch/parisc/kernel
> #
>
> -extra-y := head.o vmlinux.lds
> +extra-y := vmlinux.lds
>
> -obj-y := cache.o pacache.o setup.o pdt.o traps.o time.o irq.o \
> +obj-y := head.o cache.o pacache.o setup.o pdt.o traps.o time.o irq.o \
> pa7300lc.o syscall.o entry.o sys_parisc.o firmware.o \
> ptrace.o hardware.o inventory.o drivers.o alternative.o \
> signal.o hpmc.o real2.o parisc_ksyms.o unaligned.o \
> diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile
> index 06d2d1f78f71..ad3decb9f20b 100644
> --- a/arch/powerpc/kernel/Makefile
> +++ b/arch/powerpc/kernel/Makefile
> @@ -118,12 +118,12 @@ obj-$(CONFIG_PPC_FSL_BOOK3E) += cpu_setup_fsl_booke.o
> obj-$(CONFIG_PPC_DOORBELL) += dbell.o
> obj-$(CONFIG_JUMP_LABEL) += jump_label.o
>
> -extra-$(CONFIG_PPC64) := head_64.o
> -extra-$(CONFIG_PPC_BOOK3S_32) := head_book3s_32.o
> -extra-$(CONFIG_40x) := head_40x.o
> -extra-$(CONFIG_44x) := head_44x.o
> -extra-$(CONFIG_FSL_BOOKE) := head_fsl_booke.o
> -extra-$(CONFIG_PPC_8xx) := head_8xx.o
> +obj-$(CONFIG_PPC64) += head_64.o
> +obj-$(CONFIG_PPC_BOOK3S_32) += head_book3s_32.o
> +obj-$(CONFIG_40x) += head_40x.o
> +obj-$(CONFIG_44x) += head_44x.o
> +obj-$(CONFIG_FSL_BOOKE) += head_fsl_booke.o
> +obj-$(CONFIG_PPC_8xx) += head_8xx.o
> extra-y += vmlinux.lds
>
> obj-$(CONFIG_RELOCATABLE) += reloc_$(BITS).o
> @@ -198,10 +198,10 @@ KCOV_INSTRUMENT_paca.o := n
> CFLAGS_setup_64.o += -fno-stack-protector
> CFLAGS_paca.o += -fno-stack-protector
>
> -extra-$(CONFIG_PPC_FPU) += fpu.o
> -extra-$(CONFIG_ALTIVEC) += vector.o
> -extra-$(CONFIG_PPC64) += entry_64.o
> -extra-$(CONFIG_PPC_OF_BOOT_TRAMPOLINE) += prom_init.o
> +obj-$(CONFIG_PPC_FPU) += fpu.o
> +obj-$(CONFIG_ALTIVEC) += vector.o
> +obj-$(CONFIG_PPC64) += entry_64.o
> +obj-$(CONFIG_PPC_OF_BOOT_TRAMPOLINE) += prom_init.o
>
> extra-$(CONFIG_PPC_OF_BOOT_TRAMPOLINE) += prom_init_check
>
> diff --git a/arch/riscv/kernel/Makefile b/arch/riscv/kernel/Makefile
> index 33bb60a354cd..db6e4b1294ba 100644
> --- a/arch/riscv/kernel/Makefile
> +++ b/arch/riscv/kernel/Makefile
> @@ -28,9 +28,9 @@ KASAN_SANITIZE_cpufeature.o := n
> endif
> endif
>
> -extra-y += head.o
> extra-y += vmlinux.lds
>
> +obj-y += head.o
> obj-y += soc.o
> obj-$(CONFIG_RISCV_ALTERNATIVE) += alternative.o
> obj-y += cpu.o
> diff --git a/arch/s390/kernel/Makefile b/arch/s390/kernel/Makefile
> index 3cbfa9fddd9a..7ce00816b8df 100644
> --- a/arch/s390/kernel/Makefile
> +++ b/arch/s390/kernel/Makefile
> @@ -33,7 +33,7 @@ CFLAGS_stacktrace.o += -fno-optimize-sibling-calls
> CFLAGS_dumpstack.o += -fno-optimize-sibling-calls
> CFLAGS_unwind_bc.o += -fno-optimize-sibling-calls
>
> -obj-y := traps.o time.o process.o earlypgm.o early.o setup.o idle.o vtime.o
> +obj-y := head64.o traps.o time.o process.o earlypgm.o early.o setup.o idle.o vtime.o
> obj-y += processor.o syscall.o ptrace.o signal.o cpcmd.o ebcdic.o nmi.o
> obj-y += debug.o irq.o ipl.o dis.o diag.o vdso.o cpufeature.o
> obj-y += sysinfo.o lgr.o os_info.o machine_kexec.o
> @@ -42,7 +42,7 @@ obj-y += entry.o reipl.o relocate_kernel.o kdebugfs.o alternative.o
> obj-y += nospec-branch.o ipl_vmparm.o machine_kexec_reloc.o unwind_bc.o
> obj-y += smp.o text_amode31.o stacktrace.o
>
> -extra-y += head64.o vmlinux.lds
> +extra-y += vmlinux.lds
>
> obj-$(CONFIG_SYSFS) += nospec-sysfs.o
> CFLAGS_REMOVE_nospec-branch.o += $(CC_FLAGS_EXPOLINE)
> diff --git a/arch/sh/kernel/Makefile b/arch/sh/kernel/Makefile
> index aa0fbc9202b1..69cd9ac4b2ab 100644
> --- a/arch/sh/kernel/Makefile
> +++ b/arch/sh/kernel/Makefile
> @@ -3,7 +3,7 @@
> # Makefile for the Linux/SuperH kernel.
> #
>
> -extra-y := head_32.o vmlinux.lds
> +extra-y := vmlinux.lds
>
> ifdef CONFIG_FUNCTION_TRACER
> # Do not profile debug and lowlevel utilities
> @@ -12,7 +12,7 @@ endif
>
> CFLAGS_REMOVE_return_address.o = -pg
>
> -obj-y := debugtraps.o dumpstack.o \
> +obj-y := head_32.o debugtraps.o dumpstack.o \
> idle.o io.o irq.o irq_32.o kdebugfs.o \
> machvec.o nmi_debug.o process.o \
> process_32.o ptrace.o ptrace_32.o \
> diff --git a/arch/sparc/kernel/Makefile b/arch/sparc/kernel/Makefile
> index d3a0e072ebe8..b328e4a0bd57 100644
> --- a/arch/sparc/kernel/Makefile
> +++ b/arch/sparc/kernel/Makefile
> @@ -7,8 +7,6 @@
> asflags-y := -ansi
> ccflags-y := -Werror
>
> -extra-y := head_$(BITS).o
> -
> # Undefine sparc when processing vmlinux.lds - it is used
> # And teach CPP we are doing $(BITS) builds (for this case)
> CPPFLAGS_vmlinux.lds := -Usparc -m$(BITS)
> @@ -22,6 +20,7 @@ CFLAGS_REMOVE_perf_event.o := -pg
> CFLAGS_REMOVE_pcr.o := -pg
> endif
>
> +obj-y := head_$(BITS).o
> obj-$(CONFIG_SPARC64) += urtt_fill.o
> obj-$(CONFIG_SPARC32) += entry.o wof.o wuf.o
> obj-$(CONFIG_SPARC32) += etrap_32.o
> diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile
> index a20a5ebfacd7..956e50ca06e0 100644
> --- a/arch/x86/kernel/Makefile
> +++ b/arch/x86/kernel/Makefile
> @@ -3,10 +3,6 @@
> # Makefile for the linux kernel.
> #
>
> -extra-y := head_$(BITS).o
> -extra-y += head$(BITS).o
> -extra-y += ebda.o
> -extra-y += platform-quirks.o
> extra-y += vmlinux.lds
>
> CPPFLAGS_vmlinux.lds += -U$(UTS_MACHINE)
> @@ -42,7 +38,11 @@ KCOV_INSTRUMENT := n
>
> CFLAGS_irq.o := -I $(srctree)/$(src)/../include/asm/trace
>
> -obj-y := process_$(BITS).o signal.o
> +obj-y += head_$(BITS).o
> +obj-y += head$(BITS).o
> +obj-y += ebda.o
> +obj-y += platform-quirks.o
> +obj-y += process_$(BITS).o signal.o
> obj-$(CONFIG_COMPAT) += signal_compat.o
> obj-y += traps.o idt.o irq.o irq_$(BITS).o dumpstack_$(BITS).o
> obj-y += time.o ioport.o dumpstack.o nmi.o
> diff --git a/arch/xtensa/kernel/Makefile b/arch/xtensa/kernel/Makefile
> index 897c1c741058..f28b8e3d717e 100644
> --- a/arch/xtensa/kernel/Makefile
> +++ b/arch/xtensa/kernel/Makefile
> @@ -3,9 +3,9 @@
> # Makefile for the Linux/Xtensa kernel.
> #
>
> -extra-y := head.o vmlinux.lds
> +extra-y := vmlinux.lds
>
> -obj-y := align.o coprocessor.o entry.o irq.o platform.o process.o \
> +obj-y := head.o align.o coprocessor.o entry.o irq.o platform.o process.o \
> ptrace.o setup.o signal.o stacktrace.o syscall.o time.o traps.o \
> vectors.o
>
> diff --git a/scripts/Makefile.modpost b/scripts/Makefile.modpost
> index 2daf760eeb25..ceb1d78140e7 100644
> --- a/scripts/Makefile.modpost
> +++ b/scripts/Makefile.modpost
> @@ -70,13 +70,12 @@ quiet_cmd_vmlinux_objs = GEN $@
> for f in $(real-prereqs); do \
> case $${f} in \
> *libgcc.a) ;; \
> - *.a) $(AR) t $${f} ;; \
> - *) echo $${f} ;; \
> + *) $(AR) t $${f} ;; \
> esac \
> done > $@
>
> targets += .vmlinux.objs
> -.vmlinux.objs: $(KBUILD_VMLINUX_OBJS) $(KBUILD_VMLINUX_LIBS) FORCE
> +.vmlinux.objs: vmlinux.a $(KBUILD_VMLINUX_LIBS) FORCE
> $(call if_changed,vmlinux_objs)
>
> vmlinux.o-if-present := $(wildcard vmlinux.o)
> diff --git a/scripts/Makefile.vmlinux_o b/scripts/Makefile.vmlinux_o
> index 84019814f33f..81a4e0484457 100644
> --- a/scripts/Makefile.vmlinux_o
> +++ b/scripts/Makefile.vmlinux_o
> @@ -18,7 +18,7 @@ quiet_cmd_gen_initcalls_lds = GEN $@
> $(PERL) $(real-prereqs) > $@
>
> .tmp_initcalls.lds: $(srctree)/scripts/generate_initcall_order.pl \
> - $(KBUILD_VMLINUX_OBJS) $(KBUILD_VMLINUX_LIBS) FORCE
> + vmlinux.a $(KBUILD_VMLINUX_LIBS) FORCE
> $(call if_changed,gen_initcalls_lds)
>
> targets := .tmp_initcalls.lds
> @@ -55,7 +55,7 @@ quiet_cmd_ld_vmlinux.o = LD $@
> cmd_ld_vmlinux.o = \
> $(LD) ${KBUILD_LDFLAGS} -r -o $@ \
> $(addprefix -T , $(initcalls-lds)) \
> - --whole-archive $(KBUILD_VMLINUX_OBJS) --no-whole-archive \
> + --whole-archive vmlinux.a --no-whole-archive \
> --start-group $(KBUILD_VMLINUX_LIBS) --end-group \
> $(cmd_objtool)
>
> @@ -64,7 +64,7 @@ define rule_ld_vmlinux.o
> $(call cmd,gen_objtooldep)
> endef
>
> -vmlinux.o: $(initcalls-lds) $(KBUILD_VMLINUX_OBJS) $(KBUILD_VMLINUX_LIBS) FORCE
> +vmlinux.o: $(initcalls-lds) vmlinux.a $(KBUILD_VMLINUX_LIBS) FORCE
> $(call if_changed_rule,ld_vmlinux.o)
>
> targets += vmlinux.o
> diff --git a/scripts/clang-tools/gen_compile_commands.py b/scripts/clang-tools/gen_compile_commands.py
> index 47da25b3ba7d..d800b2c0af97 100755
> --- a/scripts/clang-tools/gen_compile_commands.py
> +++ b/scripts/clang-tools/gen_compile_commands.py
> @@ -109,20 +109,6 @@ def to_cmdfile(path):
> return os.path.join(dir, '.' + base + '.cmd')
>
>
> -def cmdfiles_for_o(obj):
> - """Generate the iterator of .cmd files associated with the object
> -
> - Yield the .cmd file used to build the given object
> -
> - Args:
> - obj: The object path
> -
> - Yields:
> - The path to .cmd file
> - """
> - yield to_cmdfile(obj)
> -
> -
> def cmdfiles_for_a(archive, ar):
> """Generate the iterator of .cmd files associated with the archive.
>
> @@ -211,13 +197,10 @@ def main():
> for path in paths:
> # If 'path' is a directory, handle all .cmd files under it.
> # Otherwise, handle .cmd files associated with the file.
> - # Most of built-in objects are linked via archives (built-in.a or lib.a)
> - # but some objects are linked to vmlinux directly.
> + # built-in objects are linked via vmlinux.a
> # Modules are listed in modules.order.
> if os.path.isdir(path):
> cmdfiles = cmdfiles_in_dir(path)
> - elif path.endswith('.o'):
> - cmdfiles = cmdfiles_for_o(path)
> elif path.endswith('.a'):
> cmdfiles = cmdfiles_for_a(path, ar)
> elif path.endswith('modules.order'):
> diff --git a/scripts/link-vmlinux.sh b/scripts/link-vmlinux.sh
> index 6a197d8a88ac..23ac13fd9d89 100755
> --- a/scripts/link-vmlinux.sh
> +++ b/scripts/link-vmlinux.sh
> @@ -3,17 +3,15 @@
> #
> # link vmlinux
> #
> -# vmlinux is linked from the objects selected by $(KBUILD_VMLINUX_OBJS) and
> -# $(KBUILD_VMLINUX_LIBS). Most are built-in.a files from top-level directories
> -# in the kernel tree, others are specified in arch/$(ARCH)/Makefile.
> +# vmlinux is linked from the objects in vmlinux.a and $(KBUILD_VMLINUX_LIBS).
> +# vmlinux.a contains objects that are linked unconditionally.
> # $(KBUILD_VMLINUX_LIBS) are archives which are linked conditionally
> # (not within --whole-archive), and do not require symbol indexes added.
> #
> # vmlinux
> # ^
> # |
> -# +--< $(KBUILD_VMLINUX_OBJS)
> -# | +--< init/built-in.a drivers/built-in.a mm/built-in.a + more
> +# +--< vmlinux.a
> # |
> # +--< $(KBUILD_VMLINUX_LIBS)
> # | +--< lib/lib.a + more
> @@ -67,7 +65,7 @@ vmlinux_link()
> objs=vmlinux.o
> libs=
> else
> - objs="${KBUILD_VMLINUX_OBJS}"
> + objs=vmlinux.a
> libs="${KBUILD_VMLINUX_LIBS}"
> fi
>
> --
> 2.34.1
--
epost|xmpp: nicolas@fjasle.eu irc://oftc.net/nsc
↳ gpg: 18ed 52db e34f 860e e9fb c82b 7d97 0932 55a0 ce7f
-- frykten for herren er opphav til kunnskap --
[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 833 bytes --]
^ permalink raw reply [flat|nested] 30+ messages in thread
* Re: [PATCH v3 5/7] kbuild: unify two modpost invocations
2022-09-28 19:59 ` Nicolas Schier
@ 2022-09-28 21:05 ` Masahiro Yamada
0 siblings, 0 replies; 30+ messages in thread
From: Masahiro Yamada @ 2022-09-28 21:05 UTC (permalink / raw)
To: Nicolas Schier
Cc: linux-kbuild, linux-kernel, linux-arch, Nick Desaulniers,
Nathan Chancellor
On Thu, Sep 29, 2022 at 4:59 AM Nicolas Schier <nicolas@fjasle.eu> wrote:
>
> On Sun, 25 Sep 2022 03:19:13 +0900 Masahiro Yamada wrote:
> > Currently, modpost is executed twice; first for vmlinux, second
> > for modules.
> >
> > This commit merges them.
> >
> > Current build flow
> > ==================
> >
> > 1) build obj-y and obj-m objects
> > 2) link vmlinux.o
> > 3) modpost for vmlinux
> > 4) link vmlinux
> > 5) modpost for modules
> > 6) link modules (*.ko)
> >
> > The build steps 1) through 6) are serialized, that is, modules are
> > built after vmlinux. You do not get benefits of parallel builds when
> > scripts/link-vmlinux.sh is being run.
> >
> > New build flow
> > ==============
> >
> > 1) build obj-y and obj-m objects
> > 2) link vmlinux.o
> > 3) modpost for vmlinux and modules
> > 4a) link vmlinux
> > 4b) link modules (*.ko)
> >
> > In the new build flow, modpost is invoked just once.
> >
> > vmlinux and modules are built in parallel. One exception is
> > CONFIG_DEBUG_INFO_BTF_MODULES=y, where modules depend on vmlinux.
> >
> > Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
> > ---
> >
> > (no changes since v1)
> >
> > Makefile | 30 ++++++++++---
> > scripts/Makefile.modfinal | 2 +-
> > scripts/Makefile.modpost | 93 ++++++++++++---------------------------
> > scripts/link-vmlinux.sh | 3 --
> > 4 files changed, 53 insertions(+), 75 deletions(-)
> >
> > diff --git a/Makefile b/Makefile
> > index b5dfb54b1993..cf9d7b1d8c14 100644
> > --- a/Makefile
> > +++ b/Makefile
> > @@ -1152,7 +1152,7 @@ cmd_link-vmlinux = \
> > $(CONFIG_SHELL) $< "$(LD)" "$(KBUILD_LDFLAGS)" "$(LDFLAGS_vmlinux)"; \
> > $(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true)
> >
> > -vmlinux: scripts/link-vmlinux.sh vmlinux.o $(KBUILD_LDS) FORCE
> > +vmlinux: scripts/link-vmlinux.sh vmlinux.o $(KBUILD_LDS) modpost FORCE
> > +$(call if_changed_dep,link-vmlinux)
> >
> > targets := vmlinux
> > @@ -1428,7 +1428,13 @@ endif
> > # Build modules
> > #
> >
> > -modules: $(if $(KBUILD_BUILTIN),vmlinux) modules_prepare
> > +# *.ko are usually independent of vmlinux, but CONFIG_DEBUG_INFOBTF_MODULES
> > +# is an exception.
> > +ifdef CONFIG_DEBUG_INFO_BTF_MODULES
> > +modules: vmlinux
> > +endif
> > +
> > +modules: modules_prepare
> >
> > # Target to prepare building external modules
> > modules_prepare: prepare
> > @@ -1741,8 +1747,12 @@ ifdef CONFIG_MODULES
> > $(MODORDER): $(build-dir)
> > @:
> >
> > -modules: modules_check
> > - $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
> > +# KBUILD_MODPOST_NOFINAL can be set to skip the final link of modules.
> > +# This is solely useful to speed up test compiles.
> > +modules: modpost
> > +ifneq ($(KBUILD_MODPOST_NOFINAL),1)
> > + $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modfinal
> > +endif
> >
> > PHONY += modules_check
> > modules_check: $(MODORDER)
> > @@ -1773,6 +1783,11 @@ KBUILD_MODULES :=
> >
> > endif # CONFIG_MODULES
> >
> > +PHONY += modpost
> > +modpost: $(if $(single-build),, $(if $(KBUILD_BUILTIN), vmlinux.o)) \
> > + $(if $(KBUILD_MODULES), modules_check)
> > + $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
> > +
> > # Single targets
> > # ---------------------------------------------------------------------------
> > # To build individual files in subdirectories, you can do like this:
> > @@ -1792,16 +1807,19 @@ single-ko := $(sort $(filter %.ko, $(MAKECMDGOALS)))
> > single-no-ko := $(filter-out $(single-ko), $(MAKECMDGOALS)) \
> > $(foreach x, o mod, $(patsubst %.ko, %.$x, $(single-ko)))
> >
> > -$(single-ko): single_modpost
> > +$(single-ko): single_modules
> > @:
> > $(single-no-ko): $(build-dir)
> > @:
> >
> > # Remove MODORDER when done because it is not the real one.
> > PHONY += single_modpost
>
> PHONY += single_modules
Thank you for your close review!
I will fix it locally.
>
> Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
>
--
Best Regards
Masahiro Yamada
^ permalink raw reply [flat|nested] 30+ messages in thread
* Re: [PATCH v3 7/7] kbuild: remove head-y syntax
2022-09-24 18:19 ` [PATCH v3 7/7] kbuild: remove head-y syntax Masahiro Yamada
@ 2022-09-29 15:21 ` Nicolas Schier
2022-10-18 8:16 ` Jiri Slaby
1 sibling, 0 replies; 30+ messages in thread
From: Nicolas Schier @ 2022-09-29 15:21 UTC (permalink / raw)
To: Masahiro Yamada
Cc: linux-kbuild, linux-kernel, linux-arch, Nick Desaulniers,
Nathan Chancellor
[-- Attachment #1: Type: text/plain, Size: 16766 bytes --]
On Sun, 25 Sep 2022 03:19:15 +0900 Masahiro Yamada wrote:
> Kbuild puts the objects listed in head-y at the head of vmlinux.
> Conventionally, we do this for head*.S, which contains the kernel entry
> point.
>
> A counter approach is to control the section order by the linker script.
> Actually, the code marked as __HEAD goes into the ".head.text" section,
> which is placed before the normal ".text" section.
>
> I do not know if both of them are needed. From the build system
> perspective, head-y is not mandatory. If you can achieve the proper code
> placement by the linker script only, it would be cleaner.
>
> I collected the current head-y objects into head-object-list.txt. It is
> a whitelist. My hope is it will be reduced in the long run.
>
> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
> ---
Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
(sorry for the sending this one so late, it got lost yesterday.)
> (no changes since v1)
>
> Documentation/kbuild/makefiles.rst | 9 ++---
> Makefile | 4 +--
> arch/alpha/Makefile | 2 --
> arch/arc/Makefile | 2 --
> arch/arm/Makefile | 3 --
> arch/arm64/Makefile | 3 --
> arch/csky/Makefile | 2 --
> arch/hexagon/Makefile | 2 --
> arch/ia64/Makefile | 1 -
> arch/loongarch/Makefile | 2 --
> arch/m68k/Makefile | 9 -----
> arch/microblaze/Makefile | 1 -
> arch/mips/Makefile | 2 --
> arch/nios2/Makefile | 1 -
> arch/openrisc/Makefile | 2 --
> arch/parisc/Makefile | 2 --
> arch/powerpc/Makefile | 12 -------
> arch/riscv/Makefile | 2 --
> arch/s390/Makefile | 2 --
> arch/sh/Makefile | 2 --
> arch/sparc/Makefile | 2 --
> arch/x86/Makefile | 5 ---
> arch/xtensa/Makefile | 2 --
> scripts/head-object-list.txt | 53 ++++++++++++++++++++++++++++++
> 24 files changed, 60 insertions(+), 67 deletions(-)
> create mode 100644 scripts/head-object-list.txt
>
> diff --git a/Documentation/kbuild/makefiles.rst b/Documentation/kbuild/makefiles.rst
> index 5a6a8426cc97..60134ddf3db1 100644
> --- a/Documentation/kbuild/makefiles.rst
> +++ b/Documentation/kbuild/makefiles.rst
> @@ -1070,8 +1070,7 @@ When kbuild executes, the following steps are followed (roughly):
> - The values of the above variables are expanded in arch/$(SRCARCH)/Makefile.
> 5) All object files are then linked and the resulting file vmlinux is
> located at the root of the obj tree.
> - The very first objects linked are listed in head-y, assigned by
> - arch/$(SRCARCH)/Makefile.
> + The very first objects linked are listed in scripts/head-object-list.txt.
> 6) Finally, the architecture-specific part does any required post processing
> and builds the final bootimage.
> - This includes building boot records
> @@ -1219,6 +1218,9 @@ When kbuild executes, the following steps are followed (roughly):
> All object files for vmlinux. They are linked to vmlinux in the same
> order as listed in KBUILD_VMLINUX_OBJS.
>
> + The objects listed in scripts/head-object-list.txt are exceptions;
> + they are placed before the other objects.
> +
> KBUILD_VMLINUX_LIBS
>
> All .a "lib" files for vmlinux. KBUILD_VMLINUX_OBJS and
> @@ -1262,8 +1264,7 @@ When kbuild executes, the following steps are followed (roughly):
> machinery is all architecture-independent.
>
>
> - head-y, core-y, libs-y, drivers-y
> - $(head-y) lists objects to be linked first in vmlinux.
> + core-y, libs-y, drivers-y
>
> $(libs-y) lists directories where a lib.a archive can be located.
>
> diff --git a/Makefile b/Makefile
> index a8c19f92ac9e..ab986e4c5189 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -1149,10 +1149,10 @@ quiet_cmd_ar_vmlinux.a = AR $@
> cmd_ar_vmlinux.a = \
> rm -f $@; \
> $(AR) cDPrST $@ $(KBUILD_VMLINUX_OBJS); \
> - $(AR) mPiT $$($(AR) t $@ | head -n1) $@ $(head-y)
> + $(AR) mPiT $$($(AR) t $@ | head -n1) $@ $$($(AR) t $@ | grep -F --file=$(srctree)/scripts/head-object-list.txt)
>
> targets += vmlinux.a
> -vmlinux.a: $(KBUILD_VMLINUX_OBJS) FORCE
> +vmlinux.a: $(KBUILD_VMLINUX_OBJS) scripts/head-object-list.txt FORCE
> $(call if_changed,ar_vmlinux.a)
>
> vmlinux.o: autoksyms_recursive vmlinux.a $(KBUILD_VMLINUX_LIBS) FORCE
> diff --git a/arch/alpha/Makefile b/arch/alpha/Makefile
> index 881cb913e23a..45158024085e 100644
> --- a/arch/alpha/Makefile
> +++ b/arch/alpha/Makefile
> @@ -36,8 +36,6 @@ cflags-y += $(cpuflags-y)
> # BWX is most important, but we don't really want any emulation ever.
> KBUILD_CFLAGS += $(cflags-y) -Wa,-mev6
>
> -head-y := arch/alpha/kernel/head.o
> -
> libs-y += arch/alpha/lib/
>
> # export what is needed by arch/alpha/boot/Makefile
> diff --git a/arch/arc/Makefile b/arch/arc/Makefile
> index efc54f3e35e0..329400a1c355 100644
> --- a/arch/arc/Makefile
> +++ b/arch/arc/Makefile
> @@ -82,8 +82,6 @@ KBUILD_CFLAGS += $(cflags-y)
> KBUILD_AFLAGS += $(KBUILD_CFLAGS)
> KBUILD_LDFLAGS += $(ldflags-y)
>
> -head-y := arch/arc/kernel/head.o
> -
> # 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 56f655deebb1..29d15c9a433e 100644
> --- a/arch/arm/Makefile
> +++ b/arch/arm/Makefile
> @@ -134,9 +134,6 @@ KBUILD_AFLAGS +=$(CFLAGS_ABI) $(AFLAGS_ISA) $(arch-y) $(tune-y) -include asm/uni
>
> CHECKFLAGS += -D__arm__
>
> -#Default value
> -head-y := arch/arm/kernel/head$(MMUEXT).o
> -
> # Text offset. This list is sorted numerically by address in order to
> # provide a means to avoid/resolve conflicts in multi-arch kernels.
> # Note: the 32kB below this value is reserved for use by the kernel
> diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile
> index 6d9d4a58b898..6e03f15bb041 100644
> --- a/arch/arm64/Makefile
> +++ b/arch/arm64/Makefile
> @@ -133,9 +133,6 @@ ifeq ($(CONFIG_DYNAMIC_FTRACE_WITH_REGS),y)
> CC_FLAGS_FTRACE := -fpatchable-function-entry=2
> endif
>
> -# Default value
> -head-y := arch/arm64/kernel/head.o
> -
> ifeq ($(CONFIG_KASAN_SW_TAGS), y)
> KASAN_SHADOW_SCALE_SHIFT := 4
> else ifeq ($(CONFIG_KASAN_GENERIC), y)
> diff --git a/arch/csky/Makefile b/arch/csky/Makefile
> index 4e1d619fd5c6..0e4237e55758 100644
> --- a/arch/csky/Makefile
> +++ b/arch/csky/Makefile
> @@ -59,8 +59,6 @@ LDFLAGS += -EL
>
> KBUILD_AFLAGS += $(KBUILD_CFLAGS)
>
> -head-y := arch/csky/kernel/head.o
> -
> core-y += arch/csky/$(CSKYABI)/
>
> libs-y += arch/csky/lib/ \
> diff --git a/arch/hexagon/Makefile b/arch/hexagon/Makefile
> index 44312bc147d8..92d005958dfb 100644
> --- a/arch/hexagon/Makefile
> +++ b/arch/hexagon/Makefile
> @@ -32,5 +32,3 @@ KBUILD_LDFLAGS += $(ldflags-y)
> TIR_NAME := r19
> KBUILD_CFLAGS += -ffixed-$(TIR_NAME) -DTHREADINFO_REG=$(TIR_NAME) -D__linux__
> KBUILD_AFLAGS += -DTHREADINFO_REG=$(TIR_NAME)
> -
> -head-y := arch/hexagon/kernel/head.o
> diff --git a/arch/ia64/Makefile b/arch/ia64/Makefile
> index e55c2f138656..56c4bb276b6e 100644
> --- a/arch/ia64/Makefile
> +++ b/arch/ia64/Makefile
> @@ -44,7 +44,6 @@ quiet_cmd_objcopy = OBJCOPY $@
> cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
>
> KBUILD_CFLAGS += $(cflags-y)
> -head-y := arch/ia64/kernel/head.o
>
> libs-y += arch/ia64/lib/
>
> diff --git a/arch/loongarch/Makefile b/arch/loongarch/Makefile
> index ec3de6191276..131fc210c2bf 100644
> --- a/arch/loongarch/Makefile
> +++ b/arch/loongarch/Makefile
> @@ -72,8 +72,6 @@ CHECKFLAGS += $(shell $(CC) $(KBUILD_CFLAGS) -dM -E -x c /dev/null | \
> sed -e "s/^\#define /-D'/" -e "s/ /'='/" -e "s/$$/'/" -e 's/\$$/&&/g')
> endif
>
> -head-y := arch/loongarch/kernel/head.o
> -
> libs-y += arch/loongarch/lib/
>
> ifeq ($(KBUILD_EXTMOD),)
> diff --git a/arch/m68k/Makefile b/arch/m68k/Makefile
> index e358605b70ba..43e39040d3ac 100644
> --- a/arch/m68k/Makefile
> +++ b/arch/m68k/Makefile
> @@ -86,15 +86,6 @@ ifdef CONFIG_KGDB
> KBUILD_CFLAGS := $(subst -fomit-frame-pointer,,$(KBUILD_CFLAGS)) -g
> endif
>
> -#
> -# Select the assembler head startup code. Order is important. The default
> -# head code is first, processor specific selections can override it after.
> -#
> -head-y := arch/m68k/kernel/head.o
> -head-$(CONFIG_SUN3) := arch/m68k/kernel/sun3-head.o
> -head-$(CONFIG_M68000) := arch/m68k/68000/head.o
> -head-$(CONFIG_COLDFIRE) := arch/m68k/coldfire/head.o
> -
> libs-y += arch/m68k/lib/
>
>
> diff --git a/arch/microblaze/Makefile b/arch/microblaze/Makefile
> index 1826d9ce4459..3f8a86c4336a 100644
> --- a/arch/microblaze/Makefile
> +++ b/arch/microblaze/Makefile
> @@ -48,7 +48,6 @@ CPUFLAGS-1 += $(call cc-option,-mcpu=v$(CPU_VER))
> # r31 holds current when in kernel mode
> KBUILD_CFLAGS += -ffixed-r31 $(CPUFLAGS-y) $(CPUFLAGS-1) $(CPUFLAGS-2)
>
> -head-y := arch/microblaze/kernel/head.o
> libs-y += arch/microblaze/lib/
>
> boot := arch/microblaze/boot
> diff --git a/arch/mips/Makefile b/arch/mips/Makefile
> index 4d2a3e73fc45..b296e33f8e33 100644
> --- a/arch/mips/Makefile
> +++ b/arch/mips/Makefile
> @@ -324,8 +324,6 @@ endif
>
> OBJCOPYFLAGS += --remove-section=.reginfo
>
> -head-y := arch/mips/kernel/head.o
> -
> libs-y += arch/mips/lib/
> libs-$(CONFIG_MIPS_FP_SUPPORT) += arch/mips/math-emu/
>
> diff --git a/arch/nios2/Makefile b/arch/nios2/Makefile
> index 3f34e6831863..f1ff4ce0f1a2 100644
> --- a/arch/nios2/Makefile
> +++ b/arch/nios2/Makefile
> @@ -37,7 +37,6 @@ KBUILD_CFLAGS += -DUTS_SYSNAME=\"$(UTS_SYSNAME)\"
> KBUILD_CFLAGS += -fno-builtin
> KBUILD_CFLAGS += -G 0
>
> -head-y := arch/nios2/kernel/head.o
> libs-y += arch/nios2/lib/ $(LIBGCC)
>
> INSTALL_PATH ?= /tftpboot
> diff --git a/arch/openrisc/Makefile b/arch/openrisc/Makefile
> index b446510173cd..68249521db5a 100644
> --- a/arch/openrisc/Makefile
> +++ b/arch/openrisc/Makefile
> @@ -55,8 +55,6 @@ ifeq ($(CONFIG_OPENRISC_HAVE_INST_SEXT),y)
> KBUILD_CFLAGS += $(call cc-option,-msext)
> endif
>
> -head-y := arch/openrisc/kernel/head.o
> -
> libs-y += $(LIBGCC)
>
> PHONY += vmlinux.bin
> diff --git a/arch/parisc/Makefile b/arch/parisc/Makefile
> index e38d993d87f2..a2d8600521f9 100644
> --- a/arch/parisc/Makefile
> +++ b/arch/parisc/Makefile
> @@ -113,8 +113,6 @@ cflags-$(CONFIG_PA7100LC) += -march=1.1 -mschedule=7100LC
> cflags-$(CONFIG_PA7300LC) += -march=1.1 -mschedule=7300
> cflags-$(CONFIG_PA8X00) += -march=2.0 -mschedule=8000
>
> -head-y := arch/parisc/kernel/head.o
> -
> KBUILD_CFLAGS += $(cflags-y)
> LIBGCC := $(shell $(CC) -print-libgcc-file-name)
> export LIBGCC
> diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile
> index 02742facf895..89c27827a11f 100644
> --- a/arch/powerpc/Makefile
> +++ b/arch/powerpc/Makefile
> @@ -226,18 +226,6 @@ KBUILD_CFLAGS += $(cpu-as-y)
> KBUILD_AFLAGS += $(aflags-y)
> KBUILD_CFLAGS += $(cflags-y)
>
> -head-$(CONFIG_PPC64) := arch/powerpc/kernel/head_64.o
> -head-$(CONFIG_PPC_BOOK3S_32) := arch/powerpc/kernel/head_book3s_32.o
> -head-$(CONFIG_PPC_8xx) := arch/powerpc/kernel/head_8xx.o
> -head-$(CONFIG_40x) := arch/powerpc/kernel/head_40x.o
> -head-$(CONFIG_44x) := arch/powerpc/kernel/head_44x.o
> -head-$(CONFIG_FSL_BOOKE) := arch/powerpc/kernel/head_fsl_booke.o
> -
> -head-$(CONFIG_PPC64) += arch/powerpc/kernel/entry_64.o
> -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
> -
> # Default to zImage, override when needed
> all: zImage
>
> diff --git a/arch/riscv/Makefile b/arch/riscv/Makefile
> index 3fa8ef336822..e013df8e7b8b 100644
> --- a/arch/riscv/Makefile
> +++ b/arch/riscv/Makefile
> @@ -110,8 +110,6 @@ else
> KBUILD_IMAGE := $(boot)/Image.gz
> endif
>
> -head-y := arch/riscv/kernel/head.o
> -
> libs-y += arch/riscv/lib/
> libs-$(CONFIG_EFI_STUB) += $(objtree)/drivers/firmware/efi/libstub/lib.a
>
> diff --git a/arch/s390/Makefile b/arch/s390/Makefile
> index 4cb5d17e7ead..de6d8b2ea4d8 100644
> --- a/arch/s390/Makefile
> +++ b/arch/s390/Makefile
> @@ -119,8 +119,6 @@ export KBUILD_CFLAGS_DECOMPRESSOR
>
> OBJCOPYFLAGS := -O binary
>
> -head-y := arch/s390/kernel/head64.o
> -
> libs-y += arch/s390/lib/
> drivers-y += drivers/s390/
>
> diff --git a/arch/sh/Makefile b/arch/sh/Makefile
> index b39412bf91fb..5c8776482530 100644
> --- a/arch/sh/Makefile
> +++ b/arch/sh/Makefile
> @@ -114,8 +114,6 @@ endif
>
> export ld-bfd
>
> -head-y := arch/sh/kernel/head_32.o
> -
> # Mach groups
> machdir-$(CONFIG_SOLUTION_ENGINE) += mach-se
> machdir-$(CONFIG_SH_HP6XX) += mach-hp6xx
> diff --git a/arch/sparc/Makefile b/arch/sparc/Makefile
> index fe58a410b4ce..a4ea5b05f288 100644
> --- a/arch/sparc/Makefile
> +++ b/arch/sparc/Makefile
> @@ -56,8 +56,6 @@ endif
>
> endif
>
> -head-y := arch/sparc/kernel/head_$(BITS).o
> -
> libs-y += arch/sparc/prom/
> libs-y += arch/sparc/lib/
>
> diff --git a/arch/x86/Makefile b/arch/x86/Makefile
> index bafbd905e6e7..9afd323c6916 100644
> --- a/arch/x86/Makefile
> +++ b/arch/x86/Makefile
> @@ -234,11 +234,6 @@ archheaders:
> ###
> # Kernel objects
>
> -head-y := arch/x86/kernel/head_$(BITS).o
> -head-y += arch/x86/kernel/head$(BITS).o
> -head-y += arch/x86/kernel/ebda.o
> -head-y += arch/x86/kernel/platform-quirks.o
> -
> libs-y += arch/x86/lib/
>
> # drivers-y are linked after core-y
> diff --git a/arch/xtensa/Makefile b/arch/xtensa/Makefile
> index 5097caa7bf0c..bfd8e433ed62 100644
> --- a/arch/xtensa/Makefile
> +++ b/arch/xtensa/Makefile
> @@ -55,8 +55,6 @@ KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(vardirs) $(plfdirs))
>
> KBUILD_DEFCONFIG := iss_defconfig
>
> -head-y := arch/xtensa/kernel/head.o
> -
> libs-y += arch/xtensa/lib/
>
> boot := arch/xtensa/boot
> diff --git a/scripts/head-object-list.txt b/scripts/head-object-list.txt
> new file mode 100644
> index 000000000000..dd2ba2eda636
> --- /dev/null
> +++ b/scripts/head-object-list.txt
> @@ -0,0 +1,53 @@
> +# Head objects
> +#
> +# The objects listed here are placed at the head of vmlinux. A typical use-case
> +# is an object that contains the entry point. This is kept for compatibility
> +# with head-y, which Kbuild used to support.
> +#
> +# A counter approach is to control the section placement by the linker script.
> +# The code marked as __HEAD goes into the ".head.text" section, which is placed
> +# before the normal ".text" section.
> +#
> +# If you can achieve the correct code ordering by linker script, please delete
> +# the entry from this file.
> +#
> +arch/alpha/kernel/head.o
> +arch/arc/kernel/head.o
> +arch/arm/kernel/head-nommu.o
> +arch/arm/kernel/head.o
> +arch/arm64/kernel/head.o
> +arch/csky/kernel/head.o
> +arch/hexagon/kernel/head.o
> +arch/ia64/kernel/head.o
> +arch/loongarch/kernel/head.o
> +arch/m68k/68000/head.o
> +arch/m68k/coldfire/head.o
> +arch/m68k/kernel/head.o
> +arch/m68k/kernel/sun3-head.o
> +arch/microblaze/kernel/head.o
> +arch/mips/kernel/head.o
> +arch/nios2/kernel/head.o
> +arch/openrisc/kernel/head.o
> +arch/parisc/kernel/head.o
> +arch/powerpc/kernel/head_40x.o
> +arch/powerpc/kernel/head_44x.o
> +arch/powerpc/kernel/head_64.o
> +arch/powerpc/kernel/head_8xx.o
> +arch/powerpc/kernel/head_book3s_32.o
> +arch/powerpc/kernel/head_fsl_booke.o
> +arch/powerpc/kernel/entry_64.o
> +arch/powerpc/kernel/fpu.o
> +arch/powerpc/kernel/vector.o
> +arch/powerpc/kernel/prom_init.o
> +arch/riscv/kernel/head.o
> +arch/s390/kernel/head64.o
> +arch/sh/kernel/head_32.o
> +arch/sparc/kernel/head_32.o
> +arch/sparc/kernel/head_64.o
> +arch/x86/kernel/head_32.o
> +arch/x86/kernel/head_64.o
> +arch/x86/kernel/head32.o
> +arch/x86/kernel/head64.o
> +arch/x86/kernel/ebda.o
> +arch/x86/kernel/platform-quirks.o
> +arch/xtensa/kernel/head.o
> --
> 2.34.1
--
epost|xmpp: nicolas@fjasle.eu irc://oftc.net/nsc
↳ gpg: 18ed 52db e34f 860e e9fb c82b 7d97 0932 55a0 ce7f
-- frykten for herren er opphav til kunnskap --
[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 833 bytes --]
^ permalink raw reply [flat|nested] 30+ messages in thread
* Re: [PATCH v3 7/7] kbuild: remove head-y syntax
2022-09-24 18:19 ` [PATCH v3 7/7] kbuild: remove head-y syntax Masahiro Yamada
2022-09-29 15:21 ` Nicolas Schier
@ 2022-10-18 8:16 ` Jiri Slaby
2022-10-18 9:12 ` Masahiro Yamada
1 sibling, 1 reply; 30+ messages in thread
From: Jiri Slaby @ 2022-10-18 8:16 UTC (permalink / raw)
To: Masahiro Yamada, linux-kbuild
Cc: linux-kernel, linux-arch, Nick Desaulniers, Nathan Chancellor,
Martin Liška
Hi,
On 24. 09. 22, 20:19, Masahiro Yamada wrote:
> Kbuild puts the objects listed in head-y at the head of vmlinux.
> Conventionally, we do this for head*.S, which contains the kernel entry
> point.
>
> A counter approach is to control the section order by the linker script.
> Actually, the code marked as __HEAD goes into the ".head.text" section,
> which is placed before the normal ".text" section.
>
> I do not know if both of them are needed. From the build system
> perspective, head-y is not mandatory. If you can achieve the proper code
> placement by the linker script only, it would be cleaner.
>
> I collected the current head-y objects into head-object-list.txt. It is
> a whitelist. My hope is it will be reduced in the long run.
>
> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
...
> --- a/Makefile
> +++ b/Makefile
> @@ -1149,10 +1149,10 @@ quiet_cmd_ar_vmlinux.a = AR $@
> cmd_ar_vmlinux.a = \
> rm -f $@; \
> $(AR) cDPrST $@ $(KBUILD_VMLINUX_OBJS); \
> - $(AR) mPiT $$($(AR) t $@ | head -n1) $@ $(head-y)
> + $(AR) mPiT $$($(AR) t $@ | head -n1) $@ $$($(AR) t $@ | grep -F --file=$(srctree)/scripts/head-object-list.txt)
With AR=gcc-ar, the "| head -n1" results in:
/usr/lib64/gcc/x86_64-suse-linux/7/../../../../x86_64-suse-linux/bin/ar
terminated with signal 13 [Broken pipe]
I found out only with gcc-lto. But maybe we should make it silent in any
case? I'm not sure how. This looks ugly (and needs the whole output to
be piped):
gcc-ar t vmlinux.a | ( head -n1; cat >/dev/null )
Note the result appears to be correct, it's only that gcc-ar complains
after printing out the very first line.
thanks,
--
js
suse labs
^ permalink raw reply [flat|nested] 30+ messages in thread
* Re: [PATCH v3 7/7] kbuild: remove head-y syntax
2022-10-18 8:16 ` Jiri Slaby
@ 2022-10-18 9:12 ` Masahiro Yamada
0 siblings, 0 replies; 30+ messages in thread
From: Masahiro Yamada @ 2022-10-18 9:12 UTC (permalink / raw)
To: Jiri Slaby
Cc: linux-kbuild, linux-kernel, linux-arch, Nick Desaulniers,
Nathan Chancellor, Martin Liška
On Tue, Oct 18, 2022 at 5:16 PM Jiri Slaby <jirislaby@kernel.org> wrote:
>
> Hi,
>
> On 24. 09. 22, 20:19, Masahiro Yamada wrote:
> > Kbuild puts the objects listed in head-y at the head of vmlinux.
> > Conventionally, we do this for head*.S, which contains the kernel entry
> > point.
> >
> > A counter approach is to control the section order by the linker script.
> > Actually, the code marked as __HEAD goes into the ".head.text" section,
> > which is placed before the normal ".text" section.
> >
> > I do not know if both of them are needed. From the build system
> > perspective, head-y is not mandatory. If you can achieve the proper code
> > placement by the linker script only, it would be cleaner.
> >
> > I collected the current head-y objects into head-object-list.txt. It is
> > a whitelist. My hope is it will be reduced in the long run.
> >
> > Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
> ...
> > --- a/Makefile
> > +++ b/Makefile
> > @@ -1149,10 +1149,10 @@ quiet_cmd_ar_vmlinux.a = AR $@
> > cmd_ar_vmlinux.a = \
> > rm -f $@; \
> > $(AR) cDPrST $@ $(KBUILD_VMLINUX_OBJS); \
> > - $(AR) mPiT $$($(AR) t $@ | head -n1) $@ $(head-y)
> > + $(AR) mPiT $$($(AR) t $@ | head -n1) $@ $$($(AR) t $@ | grep -F --file=$(srctree)/scripts/head-object-list.txt)
>
> With AR=gcc-ar, the "| head -n1" results in:
> /usr/lib64/gcc/x86_64-suse-linux/7/../../../../x86_64-suse-linux/bin/ar
> terminated with signal 13 [Broken pipe]
>
> I found out only with gcc-lto. But maybe we should make it silent in any
> case? I'm not sure how. This looks ugly (and needs the whole output to
> be piped):
> gcc-ar t vmlinux.a | ( head -n1; cat >/dev/null )
>
> Note the result appears to be correct, it's only that gcc-ar complains
> after printing out the very first line.
Indeed, I see the same message.
sed does not show such an error, though.
masahiro@zoe:~/ref/linux$ gcc-ar t vmlinux.a | head -n1
arch/x86/kernel/head_64.o
/usr/bin/ar terminated with signal 13 [Broken pipe]
masahiro@zoe:~/ref/linux$ gcc-ar t vmlinux.a | sed -n 1p
arch/x86/kernel/head_64.o
--
Best Regards
Masahiro Yamada
^ permalink raw reply [flat|nested] 30+ messages in thread
* Re: [PATCH v3 6/7] kbuild: use obj-y instead extra-y for objects placed at the head
2022-09-24 18:19 ` [PATCH v3 6/7] kbuild: use obj-y instead extra-y for objects placed at the head Masahiro Yamada
2022-09-28 20:15 ` Nicolas Schier
@ 2022-10-24 18:24 ` Jiri Slaby
2022-10-25 12:26 ` Michael Matz
1 sibling, 1 reply; 30+ messages in thread
From: Jiri Slaby @ 2022-10-24 18:24 UTC (permalink / raw)
To: Masahiro Yamada, linux-kbuild
Cc: linux-kernel, linux-arch, Nick Desaulniers, Nathan Chancellor,
Martin Liška, Michael Matz, Borislav Petkov, Peter Zijlstra,
Ard Biesheuvel
[-- Attachment #1: Type: text/plain, Size: 2709 bytes --]
Hi,
following an IRC discussion with many parties...
On 24. 09. 22, 20:19, Masahiro Yamada wrote:
> The objects placed at the head of vmlinux need special treatments:
>
> - arch/$(SRCARCH)/Makefile adds them to head-y in order to place
> them before other archives in the linker command line.
>
> - arch/$(SRCARCH)/kernel/Makefile adds them to extra-y instead of
> obj-y to avoid them going into built-in.a.
>
> This commit gets rid of the latter.
>
> Create vmlinux.a to collect all the objects that are unconditionally
> linked to vmlinux. The objects listed in head-y are moved to the head
> of vmlinux.a by using 'ar m'.
>
> With this, arch/$(SRCARCH)/kernel/Makefile can consistently use obj-y
> for builtin objects.
>
> There is no *.o that is directly linked to vmlinux. Drop unneeded code
> in scripts/clang-tools/gen_compile_commands.py.
>
> $(AR) mPi needs 'T' to workaround the llvm-ar bug. The fix was suggested
> by Nathan Chancellor [1].
>
> [1]: https://lore.kernel.org/llvm/YyjjT5gQ2hGMH0ni@dev-arch.thelio-3990X/
>
> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
> ---
...
> --- a/scripts/Makefile.vmlinux_o
> +++ b/scripts/Makefile.vmlinux_o
> @@ -18,7 +18,7 @@ quiet_cmd_gen_initcalls_lds = GEN $@
> $(PERL) $(real-prereqs) > $@
>
> .tmp_initcalls.lds: $(srctree)/scripts/generate_initcall_order.pl \
> - $(KBUILD_VMLINUX_OBJS) $(KBUILD_VMLINUX_LIBS) FORCE
> + vmlinux.a $(KBUILD_VMLINUX_LIBS) FORCE
There is a slight problem with this. The kernel built with gcc-LTO does
not boot. But as I understand it, it's not limited to gcc-LTO only.
On x86, startup_64() is supposed to be at offset >zero< of the image
(see .Lrelocated()). It was ensured by putting head64.o to the beginning
of vmlinux (by KBUILD_VMLINUX_OBJS on the LD command-line above). The
patch above instead packs head64.o into vmlinux.a and then moves it
using "ar -m" to the beginning (it's in 7/7 of the series IIRC).
The problem is that .o files listed on the LD command line explicitly
are taken as spelled. But unpacking .a inside LD gives no guarantees on
the order of packed objects. To quote: "that it happens to work
sometimes is pure luck." (Correct me guys, if I misunderstood you.)
For x86, the most ideal fix seems to be to fix it in the linker script.
By putting startup_64() to a different section and handle it in the ld
script specially -- see the attachment. It should always have been put
this way, the command line order is only a workaround. But this might
need more fixes on other archs too -- I haven't take a look.
Ideas, comments? I'll send the attachment as a PATCH later (if there are
no better suggestions).
thanks,
--
js
suse labs
[-- Attachment #2: 0001-head-fix.patch --]
[-- Type: text/x-patch, Size: 1731 bytes --]
From 8565e13d5d29eb32bed9674240593315f3bdd7f5 Mon Sep 17 00:00:00 2001
From: Jiri Slaby <jslaby@suse.cz>
Date: Mon, 24 Oct 2022 11:17:04 +0200
Subject: [PATCH] head fix
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
arch/x86/kernel/head_64.S | 4 +++-
arch/x86/kernel/vmlinux.lds.S | 1 +
include/linux/init.h | 1 +
3 files changed, 5 insertions(+), 1 deletion(-)
diff --git a/arch/x86/kernel/head_64.S b/arch/x86/kernel/head_64.S
index d860d437631b..417bcd9da3df 100644
--- a/arch/x86/kernel/head_64.S
+++ b/arch/x86/kernel/head_64.S
@@ -39,8 +39,8 @@ L4_START_KERNEL = l4_index(__START_KERNEL_map)
L3_START_KERNEL = pud_index(__START_KERNEL_map)
.text
- __HEAD
.code64
+ __HEAD_FIRST
SYM_CODE_START_NOALIGN(startup_64)
UNWIND_HINT_EMPTY
/*
@@ -126,6 +126,8 @@ SYM_CODE_START_NOALIGN(startup_64)
jmp 1f
SYM_CODE_END(startup_64)
+ __HEAD
+
SYM_CODE_START(secondary_startup_64)
UNWIND_HINT_EMPTY
ANNOTATE_NOENDBR
diff --git a/arch/x86/kernel/vmlinux.lds.S b/arch/x86/kernel/vmlinux.lds.S
index 15f29053cec4..a10a9c50bc3f 100644
--- a/arch/x86/kernel/vmlinux.lds.S
+++ b/arch/x86/kernel/vmlinux.lds.S
@@ -126,6 +126,7 @@ SECTIONS
_text = .;
_stext = .;
/* bootstrapping code */
+ KEEP(*(.head.first.text))
HEAD_TEXT
TEXT_TEXT
SCHED_TEXT
diff --git a/include/linux/init.h b/include/linux/init.h
index ca827e2fb0da..3a11d19e39cf 100644
--- a/include/linux/init.h
+++ b/include/linux/init.h
@@ -92,6 +92,7 @@
#define __memexitconst __section(".memexit.rodata")
/* For assembly routines */
+#define __HEAD_FIRST .section ".head.first.text","ax"
#define __HEAD .section ".head.text","ax"
#define __INIT .section ".init.text","ax"
#define __FINIT .previous
--
2.38.0
^ permalink raw reply related [flat|nested] 30+ messages in thread
* Re: [PATCH v3 6/7] kbuild: use obj-y instead extra-y for objects placed at the head
2022-10-24 18:24 ` Jiri Slaby
@ 2022-10-25 12:26 ` Michael Matz
2022-10-26 8:35 ` Jiri Slaby
2022-10-26 16:29 ` Masahiro Yamada
0 siblings, 2 replies; 30+ messages in thread
From: Michael Matz @ 2022-10-25 12:26 UTC (permalink / raw)
To: Jiri Slaby
Cc: Masahiro Yamada, linux-kbuild, linux-kernel, linux-arch,
Nick Desaulniers, Nathan Chancellor, Martin Liška,
Borislav Petkov, Peter Zijlstra, Ard Biesheuvel
Hello,
On Mon, 24 Oct 2022, Jiri Slaby wrote:
> > Create vmlinux.a to collect all the objects that are unconditionally
> > linked to vmlinux. The objects listed in head-y are moved to the head
> > of vmlinux.a by using 'ar m'.
...
> > --- a/scripts/Makefile.vmlinux_o
> > +++ b/scripts/Makefile.vmlinux_o
> > @@ -18,7 +18,7 @@ quiet_cmd_gen_initcalls_lds = GEN $@
> > $(PERL) $(real-prereqs) > $@
> > .tmp_initcalls.lds: $(srctree)/scripts/generate_initcall_order.pl \
> > - $(KBUILD_VMLINUX_OBJS) $(KBUILD_VMLINUX_LIBS) FORCE
> > + vmlinux.a $(KBUILD_VMLINUX_LIBS) FORCE
>
> There is a slight problem with this. The kernel built with gcc-LTO does not
> boot. But as I understand it, it's not limited to gcc-LTO only.
>
> On x86, startup_64() is supposed to be at offset >zero< of the image (see
> .Lrelocated()). It was ensured by putting head64.o to the beginning of vmlinux
> (by KBUILD_VMLINUX_OBJS on the LD command-line above). The patch above instead
> packs head64.o into vmlinux.a and then moves it using "ar -m" to the beginning
> (it's in 7/7 of the series IIRC).
>
> The problem is that .o files listed on the LD command line explicitly are
> taken as spelled. But unpacking .a inside LD gives no guarantees on the order
> of packed objects. To quote: "that it happens to work sometimes is pure luck."
> (Correct me guys, if I misunderstood you.)
To be precise: I know of no linker (outside LTO-like modes) that processes
archives in a different order than first-to-last-member (under
whole-archive), but that's not guaranteed anywhere. So relying on
member-order within archives is always brittle.
It will completely break down with LTO modes: the granularity for that is
functions, and they are placed in some unknown (from the outside, but
usually related to call-graph locality) order into several partitions,
with non-LTO-able parts (like asm code) being placed randomly between
them. The order of these blobs can not be defined in relation to the
input order of object files: with cross-file dependencies such order might
not even exist. Those whole sequence of blobs then takes the place of the
input archive (which, as there was only one, has no particular order from
the linker command lines perspective).
There are only two ways of guaranteeing an ordering: put non-LTO-.o files
at certain places of the link command, or, better, use a linker script to
specify an order.
> For x86, the most ideal fix seems to be to fix it in the linker script. By
> putting startup_64() to a different section and handle it in the ld script
> specially -- see the attachment. It should always have been put this way, the
> command line order is only a workaround. But this might need more fixes on
> other archs too -- I haven't take a look.
>
> Ideas, comments? I'll send the attachment as a PATCH later (if there are
> no better suggestions).
This will work. An alternative way would be to explicitely name the input
file in the section commands, without renaming the section:
@@ -126,6 +126,7 @@ SECTIONS
_text = .;
_stext = .;
/* bootstrapping code */
+ KEEP(vmlinux.a:head64.o(.head.text))
HEAD_TEXT
TEXT_TEXT
But I guess not all arch's name their must-be-first file head64.o (or even
have such requirement), so that's probably still arch-dependend and hence
not inherently better than your way.
(syntax for the section selector in linkerscripts is:
{archive-glob:}filename-glob (sectionname-glob)
Ciao,
Michael.
^ permalink raw reply [flat|nested] 30+ messages in thread
* Re: [PATCH v3 6/7] kbuild: use obj-y instead extra-y for objects placed at the head
2022-10-25 12:26 ` Michael Matz
@ 2022-10-26 8:35 ` Jiri Slaby
2022-10-26 11:20 ` Ard Biesheuvel
2022-10-26 16:29 ` Masahiro Yamada
1 sibling, 1 reply; 30+ messages in thread
From: Jiri Slaby @ 2022-10-26 8:35 UTC (permalink / raw)
To: Michael Matz
Cc: Masahiro Yamada, linux-kbuild, linux-kernel, linux-arch,
Nick Desaulniers, Nathan Chancellor, Martin Liška,
Borislav Petkov, Peter Zijlstra, Ard Biesheuvel
On 25. 10. 22, 14:26, Michael Matz wrote:
>> Ideas, comments? I'll send the attachment as a PATCH later (if there are
>> no better suggestions).
>
> This will work. An alternative way would be to explicitly name the input
> file in the section commands, without renaming the section:
>
> @@ -126,6 +126,7 @@ SECTIONS
> _text = .;
> _stext = .;
> /* bootstrapping code */
> + KEEP(vmlinux.a:head64.o(.head.text))
> HEAD_TEXT
> TEXT_TEXT
>
> But I guess not all arch's name their must-be-first file head64.o (or even
> have such requirement), so that's probably still arch-dependend and hence
> not inherently better than your way.
The downside of this is that it doesn't make sure the function
(startup_64()) is the first one. When someone sticks something before
it, it breaks again. But leaving the decision up to the x86 maintainers ;).
Re. other archs, I have absolutely no idea (haven't looked into that at
all).
thanks,
--
js
^ permalink raw reply [flat|nested] 30+ messages in thread
* Re: [PATCH v3 6/7] kbuild: use obj-y instead extra-y for objects placed at the head
2022-10-26 8:35 ` Jiri Slaby
@ 2022-10-26 11:20 ` Ard Biesheuvel
0 siblings, 0 replies; 30+ messages in thread
From: Ard Biesheuvel @ 2022-10-26 11:20 UTC (permalink / raw)
To: Jiri Slaby
Cc: Michael Matz, Masahiro Yamada, linux-kbuild, linux-kernel,
linux-arch, Nick Desaulniers, Nathan Chancellor,
Martin Liška, Borislav Petkov, Peter Zijlstra
On Wed, 26 Oct 2022 at 10:35, Jiri Slaby <jirislaby@kernel.org> wrote:
>
> On 25. 10. 22, 14:26, Michael Matz wrote:
> >> Ideas, comments? I'll send the attachment as a PATCH later (if there are
> >> no better suggestions).
> >
> > This will work. An alternative way would be to explicitly name the input
> > file in the section commands, without renaming the section:
> >
> > @@ -126,6 +126,7 @@ SECTIONS
> > _text = .;
> > _stext = .;
> > /* bootstrapping code */
> > + KEEP(vmlinux.a:head64.o(.head.text))
> > HEAD_TEXT
> > TEXT_TEXT
> >
> > But I guess not all arch's name their must-be-first file head64.o (or even
> > have such requirement), so that's probably still arch-dependend and hence
> > not inherently better than your way.
>
> The downside of this is that it doesn't make sure the function
> (startup_64()) is the first one. When someone sticks something before
> it, it breaks again. But leaving the decision up to the x86 maintainers ;).
>
> Re. other archs, I have absolutely no idea (haven't looked into that at
> all).
>
I seriously doubt that those __head routines need to be in .head.text.
At the time, there seems to have been some regression related to
5-level paging, but whether and how that change actually fixed
anything at all is undocumented.
So the fix here is to move those __head routines into __init, so that
only startup_64 remains in .head.text, and the existing linker script
will put it where it belongs.
commit 26179670a68b7b365fbfe38afb043dcd2e1a4678
Author: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Date: Fri Jun 16 14:30:24 2017 +0300
x86/boot/64: Put __startup_64() into .head.text
Put __startup_64() and fixup_pointer() into .head.text section to make
sure it's always near startup_64() and always callable.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: kernel test robot <fengguang.wu@intel.com>
Cc: wfg@linux.intel.com
Link: http://lkml.kernel.org/r/20170616113024.ajmif63cmcszry5a@black.fi.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
^ permalink raw reply [flat|nested] 30+ messages in thread
* Re: [PATCH v3 6/7] kbuild: use obj-y instead extra-y for objects placed at the head
2022-10-25 12:26 ` Michael Matz
2022-10-26 8:35 ` Jiri Slaby
@ 2022-10-26 16:29 ` Masahiro Yamada
2022-10-26 17:09 ` Michael Matz
1 sibling, 1 reply; 30+ messages in thread
From: Masahiro Yamada @ 2022-10-26 16:29 UTC (permalink / raw)
To: Michael Matz
Cc: Jiri Slaby, linux-kbuild, linux-kernel, linux-arch,
Nick Desaulniers, Nathan Chancellor, Martin Liška,
Borislav Petkov, Peter Zijlstra, Ard Biesheuvel
On Tue, Oct 25, 2022 at 2:26 PM Michael Matz <matz@suse.de> wrote:
>
> Hello,
>
> On Mon, 24 Oct 2022, Jiri Slaby wrote:
>
> > > Create vmlinux.a to collect all the objects that are unconditionally
> > > linked to vmlinux. The objects listed in head-y are moved to the head
> > > of vmlinux.a by using 'ar m'.
> ...
> > > --- a/scripts/Makefile.vmlinux_o
> > > +++ b/scripts/Makefile.vmlinux_o
> > > @@ -18,7 +18,7 @@ quiet_cmd_gen_initcalls_lds = GEN $@
> > > $(PERL) $(real-prereqs) > $@
> > > .tmp_initcalls.lds: $(srctree)/scripts/generate_initcall_order.pl \
> > > - $(KBUILD_VMLINUX_OBJS) $(KBUILD_VMLINUX_LIBS) FORCE
> > > + vmlinux.a $(KBUILD_VMLINUX_LIBS) FORCE
> >
> > There is a slight problem with this. The kernel built with gcc-LTO does not
> > boot. But as I understand it, it's not limited to gcc-LTO only.
> >
> > On x86, startup_64() is supposed to be at offset >zero< of the image (see
> > .Lrelocated()). It was ensured by putting head64.o to the beginning of vmlinux
> > (by KBUILD_VMLINUX_OBJS on the LD command-line above). The patch above instead
> > packs head64.o into vmlinux.a and then moves it using "ar -m" to the beginning
> > (it's in 7/7 of the series IIRC).
> >
> > The problem is that .o files listed on the LD command line explicitly are
> > taken as spelled. But unpacking .a inside LD gives no guarantees on the order
> > of packed objects. To quote: "that it happens to work sometimes is pure luck."
> > (Correct me guys, if I misunderstood you.)
>
> To be precise: I know of no linker (outside LTO-like modes) that processes
> archives in a different order than first-to-last-member (under
> whole-archive), but that's not guaranteed anywhere. So relying on
> member-order within archives is always brittle.
The objects in an archive are linked first-to-last-member for a long time.
This is the assumption which we have relied on for a long time.
We assume the initcall order is preserved.
The call order within each of core_initcall, arch_initcall,
device_initcall, etc.
is the order of objects in built-in.a, in other words,
the order they appear in Makefiles.
If this assumption were broken, the initcall order would be randomised.
(Somebody would have screamed earlier, if so.)
Clang LTO came up with its own workaround.
See commit a8cccdd954732a558d481407ab7c3106b89c34ae
So, this is happening on (not-upstreamed-yet) GCC LTO only?
> It will completely break down with LTO modes: the granularity for that is
> functions, and they are placed in some unknown (from the outside, but
> usually related to call-graph locality) order into several partitions,
> with non-LTO-able parts (like asm code) being placed randomly between
> them. The order of these blobs can not be defined in relation to the
> input order of object files: with cross-file dependencies such order might
> not even exist. Those whole sequence of blobs then takes the place of the
> input archive (which, as there was only one, has no particular order from
> the linker command lines perspective).
>
> There are only two ways of guaranteeing an ordering: put non-LTO-.o files
> at certain places of the link command, or, better, use a linker script to
> specify an order.
The objects directly given in the command line are linked in the same order,
even under LTO mode. Is this what you mean?
Any documentation about that?
> > For x86, the most ideal fix seems to be to fix it in the linker script. By
> > putting startup_64() to a different section and handle it in the ld script
> > specially -- see the attachment. It should always have been put this way, the
> > command line order is only a workaround. But this might need more fixes on
> > other archs too -- I haven't take a look.
> >
> > Ideas, comments? I'll send the attachment as a PATCH later (if there are
> > no better suggestions).
>
> This will work. An alternative way would be to explicitely name the input
> file in the section commands, without renaming the section:
>
> @@ -126,6 +126,7 @@ SECTIONS
> _text = .;
> _stext = .;
> /* bootstrapping code */
> + KEEP(vmlinux.a:head64.o(.head.text))
> HEAD_TEXT
> TEXT_TEXT
>
> But I guess not all arch's name their must-be-first file head64.o (or even
> have such requirement), so that's probably still arch-dependend and hence
> not inherently better than your way.
>
> (syntax for the section selector in linkerscripts is:
>
> {archive-glob:}filename-glob (sectionname-glob)
>
>
> Ciao,
> Michael.
--
Best Regards
Masahiro Yamada
^ permalink raw reply [flat|nested] 30+ messages in thread
* Re: [PATCH v3 6/7] kbuild: use obj-y instead extra-y for objects placed at the head
2022-10-26 16:29 ` Masahiro Yamada
@ 2022-10-26 17:09 ` Michael Matz
0 siblings, 0 replies; 30+ messages in thread
From: Michael Matz @ 2022-10-26 17:09 UTC (permalink / raw)
To: Masahiro Yamada
Cc: Jiri Slaby, linux-kbuild, linux-kernel, linux-arch,
Nick Desaulniers, Nathan Chancellor, Martin Liška,
Borislav Petkov, Peter Zijlstra, Ard Biesheuvel
Hello,
On Thu, 27 Oct 2022, Masahiro Yamada wrote:
> > To be precise: I know of no linker (outside LTO-like modes) that processes
> > archives in a different order than first-to-last-member (under
> > whole-archive), but that's not guaranteed anywhere. So relying on
> > member-order within archives is always brittle.
>
> The objects in an archive are linked first-to-last-member for a long time.
> This is the assumption which we have relied on for a long time.
Sure, that doesn't mean it's guaranteed, for this I'm just devils
advocate. As I said, it's the mode of operation of all currently existing
linkers I know, so for the forseeable future you can continue to rely on
it. But as soon as LTO enters the picture that all breaks down, as you
see here.
Consider how LTO works, the granularity of shuffling stuff around is the
functions of all inputs, not the object files. So, even if you say
obj1.o obj2.o
on the link command line, and supposed there are two functions in each of
obj1 and obj2, then it may just so happen that LTO partitions the program
such that it ends up with partitions
part1 : obj1:foo obj2:bar
part2 : obj1:bar obj2:foo
now, suddenly there is no order between part1 and part2 anymore that
would faithfully represent the original order between obj1 and obj2
functions. Of course the partitioning algorithm could be changed, but
that would limit the effectiveness of LTO.
> We assume the initcall order is preserved.
> The call order within each of core_initcall, arch_initcall,
> device_initcall, etc.
> is the order of objects in built-in.a, in other words,
> the order they appear in Makefiles.
If you rely on relative order of these, then you will probably see
interesting effects in LTO mode eventually.
> So, this is happening on (not-upstreamed-yet) GCC LTO only?
I don't know. As any kind of whole-program transformations is in
principle cross-file on per-function basis (that's the whole purpose) I
would imagine that you can see these effects in all compilers, if you try
hard enough.
> > There are only two ways of guaranteeing an ordering: put non-LTO-.o files
> > at certain places of the link command, or, better, use a linker script to
> > specify an order.
>
> The objects directly given in the command line are linked in the same order,
> even under LTO mode. Is this what you mean?
If they don't contain LTO code then yes, they are linked
in exactly the given order. If they do, they become part of the LTO blob
whose ordering isn't precisely influenced by cmdline order.
> Any documentation about that?
I think so, but I can't point my finger to anything. Several parts of the
toolchain rely on that (so the kernel is not alone), but those are either
carefully avoiding LTO or using other ordering means like linker script to
achieve what they need.
Ciao,
Michael.
^ permalink raw reply [flat|nested] 30+ messages in thread
end of thread, other threads:[~2022-10-26 17:09 UTC | newest]
Thread overview: 30+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-09-24 18:19 [PATCH v3 0/7] kbuild: various cleanups Masahiro Yamada
2022-09-24 18:19 ` [PATCH v3 1/7] kbuild: hard-code KBUILD_ALLDIRS in scripts/Makefile.package Masahiro Yamada
2022-09-28 19:09 ` Nicolas Schier
2022-09-24 18:19 ` [PATCH v3 2/7] kbuild: list sub-directories in ./Kbuild Masahiro Yamada
2022-09-24 19:37 ` kernel test robot
2022-09-24 20:27 ` kernel test robot
2022-09-25 0:28 ` Masahiro Yamada
2022-09-26 21:06 ` Nick Desaulniers
2022-09-28 8:32 ` Masahiro Yamada
2022-09-28 19:30 ` Nicolas Schier
2022-09-24 18:19 ` [PATCH v3 3/7] kbuild: move .vmlinux.objs rule to Makefile.modpost Masahiro Yamada
2022-09-28 19:35 ` Nicolas Schier
2022-09-24 18:19 ` [PATCH v3 4/7] kbuild: move vmlinux.o rule to the top Makefile Masahiro Yamada
2022-09-28 19:37 ` Nicolas Schier
2022-09-24 18:19 ` [PATCH v3 5/7] kbuild: unify two modpost invocations Masahiro Yamada
2022-09-28 19:59 ` Nicolas Schier
2022-09-28 21:05 ` Masahiro Yamada
2022-09-24 18:19 ` [PATCH v3 6/7] kbuild: use obj-y instead extra-y for objects placed at the head Masahiro Yamada
2022-09-28 20:15 ` Nicolas Schier
2022-10-24 18:24 ` Jiri Slaby
2022-10-25 12:26 ` Michael Matz
2022-10-26 8:35 ` Jiri Slaby
2022-10-26 11:20 ` Ard Biesheuvel
2022-10-26 16:29 ` Masahiro Yamada
2022-10-26 17:09 ` Michael Matz
2022-09-24 18:19 ` [PATCH v3 7/7] kbuild: remove head-y syntax Masahiro Yamada
2022-09-29 15:21 ` Nicolas Schier
2022-10-18 8:16 ` Jiri Slaby
2022-10-18 9:12 ` Masahiro Yamada
2022-09-26 21:39 ` [PATCH v3 0/7] kbuild: various cleanups Nick Desaulniers
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).