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Kbuild updates for v5.4

Browse Source 
- add modpost warn exported symbols marked as 'static' because 'static'
    and EXPORT_SYMBOL is an odd combination
 
  - break the build early if gold linker is used
 
  - optimize the Bison rule to produce .c and .h files by a single
    pattern rule
 
  - handle PREEMPT_RT in the module vermagic and UTS_VERSION
 
  - warn CONFIG options leaked to the user-space except existing ones
 
  - make single targets work properly
 
  - rebuild modules when module linker scripts are updated
 
  - split the module final link stage into scripts/Makefile.modfinal
 
  - fix the missed error code in merge_config.sh
 
  - improve the error message displayed on the attempt of the O= build
    in unclean source tree
 
  - remove 'clean-dirs' syntax
 
  - disable -Wimplicit-fallthrough warning for Clang
 
  - add CONFIG_CC_OPTIMIZE_FOR_SIZE_O3 for ARC
 
  - remove ARCH_{CPP,A,C}FLAGS variables
 
  - add $(BASH) to run bash scripts
 
  - change *CFLAGS_<basetarget>.o to take the relative path to $(obj)
    instead of the basename
 
  - stop suppressing Clang's -Wunused-function warnings when W=1
 
  - fix linux/export.h to avoid genksyms calculating CRC of trimmed
    exported symbols
 
  - misc cleanups
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Merge tag 'kbuild-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild updates from Masahiro Yamada:

 - add modpost warn exported symbols marked as 'static' because 'static'
   and EXPORT_SYMBOL is an odd combination

 - break the build early if gold linker is used

 - optimize the Bison rule to produce .c and .h files by a single
   pattern rule

 - handle PREEMPT_RT in the module vermagic and UTS_VERSION

 - warn CONFIG options leaked to the user-space except existing ones

 - make single targets work properly

 - rebuild modules when module linker scripts are updated

 - split the module final link stage into scripts/Makefile.modfinal

 - fix the missed error code in merge_config.sh

 - improve the error message displayed on the attempt of the O= build in
   unclean source tree

 - remove 'clean-dirs' syntax

 - disable -Wimplicit-fallthrough warning for Clang

 - add CONFIG_CC_OPTIMIZE_FOR_SIZE_O3 for ARC

 - remove ARCH_{CPP,A,C}FLAGS variables

 - add $(BASH) to run bash scripts

 - change *CFLAGS_<basetarget>.o to take the relative path to $(obj)
   instead of the basename

 - stop suppressing Clang's -Wunused-function warnings when W=1

 - fix linux/export.h to avoid genksyms calculating CRC of trimmed
   exported symbols

 - misc cleanups

* tag 'kbuild-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (63 commits)
  genksyms: convert to SPDX License Identifier for lex.l and parse.y
  modpost: use __section in the output to *.mod.c
  modpost: use MODULE_INFO() for __module_depends
  export.h, genksyms: do not make genksyms calculate CRC of trimmed symbols
  export.h: remove defined(__KERNEL__), which is no longer needed
  kbuild: allow Clang to find unused static inline functions for W=1 build
  kbuild: rename KBUILD_ENABLE_EXTRA_GCC_CHECKS to KBUILD_EXTRA_WARN
  kbuild: refactor scripts/Makefile.extrawarn
  merge_config.sh: ignore unwanted grep errors
  kbuild: change *FLAGS_<basetarget>.o to take the path relative to $(obj)
  modpost: add NOFAIL to strndup
  modpost: add guid_t type definition
  kbuild: add $(BASH) to run scripts with bash-extension
  kbuild: remove ARCH_{CPP,A,C}FLAGS
  kbuild,arc: add CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3 for ARC
  kbuild: Do not enable -Wimplicit-fallthrough for clang for now
  kbuild: clean up subdir-ymn calculation in Makefile.clean
  kbuild: remove unneeded '+' marker from cmd_clean
  kbuild: remove clean-dirs syntax
  kbuild: check clean srctree even earlier
  ...
This commit is contained in:
Linus Torvalds 2019-09-20 08:36:47 -07:00
commit d7b0827f28
96 changed files with 759 additions and 682 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
.gitignore vendored
View File

@ -34,7 +34,6 @@
*.mod.c
*.o
*.o.*
*.order
*.patch
*.s
*.so
@ -46,6 +45,7 @@
*.xz
Module.symvers
modules.builtin
modules.order
#
# Top-level generic files

28
Documentation/kbuild/kbuild.rst
View File

@ -105,6 +105,15 @@ The output directory can also be specified using "O=...".
Setting "O=..." takes precedence over KBUILD_OUTPUT.
KBUILD_EXTRA_WARN
-----------------
Specify the extra build checks. The same value can be assigned by passing
W=... from the command line.
See `make help` for the list of the supported values.
Setting "W=..." takes precedence over KBUILD_EXTRA_WARN.
KBUILD_DEBARCH
--------------
For the deb-pkg target, allows overriding the normal heuristics deployed by
@ -241,11 +250,6 @@ To get all available archs you can also specify all. E.g.::
$ make ALLSOURCE_ARCHS=all tags
KBUILD_ENABLE_EXTRA_GCC_CHECKS
------------------------------
If enabled over the make command line with "W=1", it turns on additional
gcc -W... options for more extensive build-time checking.
KBUILD_BUILD_TIMESTAMP
----------------------
Setting this to a date string overrides the timestamp used in the
@ -258,17 +262,3 @@ KBUILD_BUILD_USER, KBUILD_BUILD_HOST
These two variables allow to override the user@host string displayed during
boot and in /proc/version. The default value is the output of the commands
whoami and host, respectively.
KBUILD_LDS
----------
The linker script with full path. Assigned by the top-level Makefile.
KBUILD_VMLINUX_OBJS
-------------------
All object files for vmlinux. They are linked to vmlinux in the same
order as listed in KBUILD_VMLINUX_OBJS.
KBUILD_VMLINUX_LIBS
-------------------
All .a "lib" files for vmlinux. KBUILD_VMLINUX_OBJS and KBUILD_VMLINUX_LIBS
together specify all the object files used to link vmlinux.

67
Documentation/kbuild/makefiles.rst
View File

@ -471,21 +471,6 @@ more details, with real examples.
The second argument is optional, and if supplied will be used
if first argument is not supported.
cc-ldoption
cc-ldoption is used to check if $(CC) when used to link object files
supports the given option. An optional second option may be
specified if first option are not supported.
Example::
#arch/x86/kernel/Makefile
vsyscall-flags += $(call cc-ldoption, -Wl$(comma)--hash-style=sysv)
In the above example, vsyscall-flags will be assigned the option
-Wl$(comma)--hash-style=sysv if it is supported by $(CC).
The second argument is optional, and if supplied will be used
if first argument is not supported.
as-instr
as-instr checks if the assembler reports a specific instruction
and then outputs either option1 or option2
@ -765,7 +750,8 @@ Files matching the patterns "*.[oas]", "*.ko", plus some additional files
generated by kbuild are deleted all over the kernel src tree when
"make clean" is executed.
Additional files can be specified in kbuild makefiles by use of $(clean-files).
Additional files or directories can be specified in kbuild makefiles by use of
$(clean-files).
Example::
@ -776,23 +762,8 @@ When executing "make clean", the file "crc32table.h" will be deleted.
Kbuild will assume files to be in the same relative directory as the
Makefile, except if prefixed with $(objtree).
To delete a directory hierarchy use:
Example::
#scripts/package/Makefile
clean-dirs := $(objtree)/debian/
This will delete the directory debian in the toplevel directory, including all
subdirectories.
To exclude certain files from make clean, use the $(no-clean-files) variable.
This is only a special case used in the top level Kbuild file:
Example::
#Kbuild
no-clean-files := $(bounds-file) $(offsets-file)
To exclude certain files or directories from make clean, use the
$(no-clean-files) variable.
Usually kbuild descends down in subdirectories due to "obj-* := dir/",
but in the architecture makefiles where the kbuild infrastructure
@ -988,13 +959,25 @@ When kbuild executes, the following steps are followed (roughly):
$(KBUILD_ARFLAGS) set by the top level Makefile to "D" (deterministic
mode) if this option is supported by $(AR).
ARCH_CPPFLAGS, ARCH_AFLAGS, ARCH_CFLAGS Overrides the kbuild defaults
KBUILD_LDS
These variables are appended to the KBUILD_CPPFLAGS,
KBUILD_AFLAGS, and KBUILD_CFLAGS, respectively, after the
top-level Makefile has set any other flags. This provides a
means for an architecture to override the defaults.
The linker script with full path. Assigned by the top-level Makefile.
KBUILD_LDS_MODULE
The module linker script with full path. Assigned by the top-level
Makefile and additionally by the arch Makefile.
KBUILD_VMLINUX_OBJS
All object files for vmlinux. They are linked to vmlinux in the same
order as listed in KBUILD_VMLINUX_OBJS.
KBUILD_VMLINUX_LIBS
All .a "lib" files for vmlinux. KBUILD_VMLINUX_OBJS and
KBUILD_VMLINUX_LIBS together specify all the object files used to
link vmlinux.
6.2 Add prerequisites to archheaders
------------------------------------
@ -1139,7 +1122,7 @@ When kbuild executes, the following steps are followed (roughly):
header-test-y
header-test-y specifies headers (*.h) in the current directory that
header-test-y specifies headers (`*.h`) in the current directory that
should be compile tested to ensure they are self-contained,
i.e. compilable as standalone units. If CONFIG_HEADER_TEST is enabled,
this builds them as part of extra-y.
@ -1147,11 +1130,11 @@ When kbuild executes, the following steps are followed (roughly):
header-test-pattern-y
This works as a weaker version of header-test-y, and accepts wildcard
patterns. The typical usage is:
patterns. The typical usage is::
header-test-pattern-y += *.h
header-test-pattern-y += *.h
This specifies all the files that matches to '*.h' in the current
This specifies all the files that matches to `*.h` in the current
directory, but the files in 'header-test-' are excluded.
6.7 Commands useful for building a boot image

7
Kbuild
View File

@ -18,8 +18,6 @@ $(bounds-file): kernel/bounds.s FORCE
timeconst-file := include/generated/timeconst.h
targets += $(timeconst-file)
filechk_gentimeconst = echo $(CONFIG_HZ) | bc -q $<
$(timeconst-file): kernel/time/timeconst.bc FORCE
@ -42,7 +40,6 @@ $(offsets-file): arch/$(SRCARCH)/kernel/asm-offsets.s FORCE
# Check for missing system calls
always += missing-syscalls
targets += missing-syscalls
quiet_cmd_syscalls = CALL $<
cmd_syscalls = $(CONFIG_SHELL) $< $(CC) $(c_flags) $(missing_syscalls_flags)
@ -54,13 +51,9 @@ missing-syscalls: scripts/checksyscalls.sh $(offsets-file) FORCE
# Check atomic headers are up-to-date
always += old-atomics
targets += old-atomics
quiet_cmd_atomics = CALL $<
cmd_atomics = $(CONFIG_SHELL) $<
old-atomics: scripts/atomic/check-atomics.sh FORCE
$(call cmd,atomics)
# Keep these three files during make clean
no-clean-files := $(bounds-file) $(offsets-file) $(timeconst-file)

292
Makefile
View File

@ -230,6 +230,8 @@ endif
export KBUILD_CHECKSRC KBUILD_EXTMOD
extmod-prefix = $(if $(KBUILD_EXTMOD),$(KBUILD_EXTMOD)/)
ifeq ($(abs_srctree),$(abs_objtree))
# building in the source tree
srctree := .
@ -271,52 +273,62 @@ no-dot-config-targets := $(clean-targets) \
%asm-generic kernelversion %src-pkg
no-sync-config-targets := $(no-dot-config-targets) install %install \
kernelrelease
single-targets := %.a %.i %.ko %.lds %.ll %.lst %.mod %.o %.s %.symtypes %/
config-targets := 0
mixed-targets := 0
dot-config := 1
may-sync-config := 1
config-build :=
mixed-build :=
need-config := 1
may-sync-config := 1
single-build :=
ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
dot-config := 0
need-config :=
endif
endif
ifneq ($(filter $(no-sync-config-targets), $(MAKECMDGOALS)),)
ifeq ($(filter-out $(no-sync-config-targets), $(MAKECMDGOALS)),)
may-sync-config := 0
may-sync-config :=
endif
endif
ifneq ($(KBUILD_EXTMOD),)
may-sync-config := 0
may-sync-config :=
endif
ifeq ($(KBUILD_EXTMOD),)
ifneq ($(filter config %config,$(MAKECMDGOALS)),)
config-targets := 1
config-build := 1
ifneq ($(words $(MAKECMDGOALS)),1)
mixed-targets := 1
mixed-build := 1
endif
endif
endif
# We cannot build single targets and the others at the same time
ifneq ($(filter $(single-targets), $(MAKECMDGOALS)),)
single-build := 1
ifneq ($(filter-out $(single-targets), $(MAKECMDGOALS)),)
mixed-build := 1
endif
endif
# For "make -j clean all", "make -j mrproper defconfig all", etc.
ifneq ($(filter $(clean-targets),$(MAKECMDGOALS)),)
ifneq ($(filter-out $(clean-targets),$(MAKECMDGOALS)),)
mixed-targets := 1
mixed-build := 1
endif
endif
# install and modules_install need also be processed one by one
ifneq ($(filter install,$(MAKECMDGOALS)),)
ifneq ($(filter modules_install,$(MAKECMDGOALS)),)
mixed-targets := 1
mixed-build := 1
endif
endif
ifeq ($(mixed-targets),1)
ifdef mixed-build
# ===========================================================================
# We're called with mixed targets (*config and build targets).
# Handle them one by one.
@ -332,7 +344,7 @@ __build_one_by_one:
$(MAKE) -f $(srctree)/Makefile $$i; \
done
else
else # !mixed-build
include scripts/Kbuild.include
@ -392,9 +404,7 @@ KCONFIG_CONFIG ?= .config
export KCONFIG_CONFIG
# SHELL used by kbuild
CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
else if [ -x /bin/bash ]; then echo /bin/bash; \
else echo sh; fi ; fi)
CONFIG_SHELL := sh
HOST_LFS_CFLAGS := $(shell getconf LFS_CFLAGS 2>/dev/null)
HOST_LFS_LDFLAGS := $(shell getconf LFS_LDFLAGS 2>/dev/null)
@ -431,6 +441,7 @@ PYTHON = python
PYTHON2 = python2
PYTHON3 = python3
CHECK = sparse
BASH = bash
CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \
-Wbitwise -Wno-return-void -Wno-unknown-attribute $(CF)
@ -470,12 +481,13 @@ KBUILD_AFLAGS_KERNEL :=
KBUILD_CFLAGS_KERNEL :=
KBUILD_AFLAGS_MODULE := -DMODULE
KBUILD_CFLAGS_MODULE := -DMODULE
KBUILD_LDFLAGS_MODULE := -T $(srctree)/scripts/module-common.lds
KBUILD_LDFLAGS_MODULE :=
export KBUILD_LDS_MODULE := $(srctree)/scripts/module-common.lds
KBUILD_LDFLAGS :=
GCC_PLUGINS_CFLAGS :=
CLANG_FLAGS :=
export ARCH SRCARCH CONFIG_SHELL HOSTCC KBUILD_HOSTCFLAGS CROSS_COMPILE AS LD CC
export ARCH SRCARCH CONFIG_SHELL BASH HOSTCC KBUILD_HOSTCFLAGS CROSS_COMPILE AS LD CC
export CPP AR NM STRIP OBJCOPY OBJDUMP OBJSIZE PAHOLE LEX YACC AWK INSTALLKERNEL
export PERL PYTHON PYTHON2 PYTHON3 CHECK CHECKFLAGS MAKE UTS_MACHINE HOSTCXX
export KBUILD_HOSTCXXFLAGS KBUILD_HOSTLDFLAGS KBUILD_HOSTLDLIBS LDFLAGS_MODULE
@ -506,6 +518,7 @@ scripts_basic:
$(Q)rm -f .tmp_quiet_recordmcount
PHONY += outputmakefile
# Before starting out-of-tree build, make sure the source tree is clean.
# outputmakefile generates a Makefile in the output directory, if using a
# separate output directory. This allows convenient use of make in the
# output directory.
@ -513,6 +526,15 @@ PHONY += outputmakefile
# ignore whole output directory
outputmakefile:
ifdef building_out_of_srctree
$(Q)if [ -f $(srctree)/.config -o \
-d $(srctree)/include/config -o \
-d $(srctree)/arch/$(SRCARCH)/include/generated ]; then \
echo >&2 "***"; \
echo >&2 "*** The source tree is not clean, please run 'make$(if $(findstring command line, $(origin ARCH)), ARCH=$(ARCH)) mrproper'"; \
echo >&2 "*** in $(abs_srctree)";\
echo >&2 "***"; \
false; \
fi
$(Q)ln -fsn $(srctree) source
$(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile $(srctree)
$(Q)test -e .gitignore || \
@ -544,7 +566,7 @@ endif
# and from include/config/auto.conf.cmd to detect the compiler upgrade.
CC_VERSION_TEXT = $(shell $(CC) --version 2>/dev/null | head -n 1)
ifeq ($(config-targets),1)
ifdef config-build
# ===========================================================================
# *config targets only - make sure prerequisites are updated, and descend
# in scripts/kconfig to make the *config target
@ -555,13 +577,13 @@ ifeq ($(config-targets),1)
include arch/$(SRCARCH)/Makefile
export KBUILD_DEFCONFIG KBUILD_KCONFIG CC_VERSION_TEXT
config: scripts_basic outputmakefile FORCE
config: outputmakefile scripts_basic FORCE
$(Q)$(MAKE) $(build)=scripts/kconfig $@
%config: scripts_basic outputmakefile FORCE
%config: outputmakefile scripts_basic FORCE
$(Q)$(MAKE) $(build)=scripts/kconfig $@
else
else #!config-build
# ===========================================================================
# Build targets only - this includes vmlinux, arch specific targets, clean
# targets and others. In general all targets except *config targets.
@ -604,7 +626,7 @@ endif
export KBUILD_MODULES KBUILD_BUILTIN
ifeq ($(dot-config),1)
ifdef need-config
include include/config/auto.conf
endif
@ -645,15 +667,10 @@ RETPOLINE_VDSO_CFLAGS := $(call cc-option,$(RETPOLINE_VDSO_CFLAGS_GCC),$(call cc
export RETPOLINE_CFLAGS
export RETPOLINE_VDSO_CFLAGS
# The arch Makefile can set ARCH_{CPP,A,C}FLAGS to override the default
# values of the respective KBUILD_* variables
ARCH_CPPFLAGS :=
ARCH_AFLAGS :=
ARCH_CFLAGS :=
include arch/$(SRCARCH)/Makefile
ifeq ($(dot-config),1)
ifeq ($(may-sync-config),1)
ifdef need-config
ifdef may-sync-config
# Read in dependencies to all Kconfig* files, make sure to run syncconfig if
# changes are detected. This should be included after arch/$(SRCARCH)/Makefile
# because some architectures define CROSS_COMPILE there.
@ -676,7 +693,7 @@ $(KCONFIG_CONFIG):
# The syncconfig should be executed only once to make all the targets.
%/auto.conf %/auto.conf.cmd %/tristate.conf: $(KCONFIG_CONFIG)
$(Q)$(MAKE) -f $(srctree)/Makefile syncconfig
else
else # !may-sync-config
# External modules and some install targets need include/generated/autoconf.h
# and include/config/auto.conf but do not care if they are up-to-date.
# Use auto.conf to trigger the test
@ -692,7 +709,7 @@ include/config/auto.conf:
/bin/false)
endif # may-sync-config
endif # $(dot-config)
endif # need-config
KBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks,)
KBUILD_CFLAGS += $(call cc-disable-warning,frame-address,)
@ -700,10 +717,12 @@ KBUILD_CFLAGS += $(call cc-disable-warning, format-truncation)
KBUILD_CFLAGS += $(call cc-disable-warning, format-overflow)
KBUILD_CFLAGS += $(call cc-disable-warning, address-of-packed-member)
ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
KBUILD_CFLAGS += -Os
else
KBUILD_CFLAGS += -O2
ifdef CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE
KBUILD_CFLAGS += -O2
else ifdef CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3
KBUILD_CFLAGS += -O3
else ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
KBUILD_CFLAGS += -Os
endif
ifdef CONFIG_CC_DISABLE_WARN_MAYBE_UNINITIALIZED
@ -751,6 +770,11 @@ else
# These warnings generated too much noise in a regular build.
# Use make W=1 to enable them (see scripts/Makefile.extrawarn)
KBUILD_CFLAGS += -Wno-unused-but-set-variable
# Warn about unmarked fall-throughs in switch statement.
# Disabled for clang while comment to attribute conversion happens and
# https://github.com/ClangBuiltLinux/linux/issues/636 is discussed.
KBUILD_CFLAGS += $(call cc-option,-Wimplicit-fallthrough,)
endif
KBUILD_CFLAGS += $(call cc-disable-warning, unused-const-variable)
@ -845,9 +869,6 @@ NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
# warn about C99 declaration after statement
KBUILD_CFLAGS += -Wdeclaration-after-statement
# Warn about unmarked fall-throughs in switch statement.
KBUILD_CFLAGS += $(call cc-option,-Wimplicit-fallthrough,)
# Variable Length Arrays (VLAs) should not be used anywhere in the kernel
KBUILD_CFLAGS += -Wvla
@ -900,11 +921,10 @@ include scripts/Makefile.kasan
include scripts/Makefile.extrawarn
include scripts/Makefile.ubsan
# Add any arch overrides and user supplied CPPFLAGS, AFLAGS and CFLAGS as the
# last assignments
KBUILD_CPPFLAGS += $(ARCH_CPPFLAGS) $(KCPPFLAGS)
KBUILD_AFLAGS += $(ARCH_AFLAGS) $(KAFLAGS)
KBUILD_CFLAGS += $(ARCH_CFLAGS) $(KCFLAGS)
# Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments
KBUILD_CPPFLAGS += $(KCPPFLAGS)
KBUILD_AFLAGS += $(KAFLAGS)
KBUILD_CFLAGS += $(KCFLAGS)
KBUILD_LDFLAGS_MODULE += --build-id
LDFLAGS_vmlinux += --build-id
@ -1007,7 +1027,7 @@ endif
PHONY += prepare0
export MODORDER := $(if $(KBUILD_EXTMOD),$(KBUILD_EXTMOD)/)modules.order
export MODORDER := $(extmod-prefix)modules.order
ifeq ($(KBUILD_EXTMOD),)
core-y += kernel/ certs/ mm/ fs/ ipc/ security/ crypto/ block/
@ -1020,6 +1040,9 @@ vmlinux-alldirs := $(sort $(vmlinux-dirs) Documentation \
$(patsubst %/,%,$(filter %/, $(init-) $(core-) \
$(drivers-) $(net-) $(libs-) $(virt-))))
build-dirs := $(vmlinux-dirs)
clean-dirs := $(vmlinux-alldirs)
init-y := $(patsubst %/, %/built-in.a, $(init-y))
core-y := $(patsubst %/, %/built-in.a, $(core-y))
drivers-y := $(patsubst %/, %/built-in.a, $(drivers-y))
@ -1042,7 +1065,7 @@ vmlinux-deps := $(KBUILD_LDS) $(KBUILD_VMLINUX_OBJS) $(KBUILD_VMLINUX_LIBS)
# Recurse until adjust_autoksyms.sh is satisfied
PHONY += autoksyms_recursive
ifdef CONFIG_TRIM_UNUSED_KSYMS
autoksyms_recursive: $(vmlinux-deps) modules.order
autoksyms_recursive: descend modules.order
$(Q)$(CONFIG_SHELL) $(srctree)/scripts/adjust_autoksyms.sh \
"$(MAKE) -f $(srctree)/Makefile vmlinux"
endif
@ -1074,17 +1097,7 @@ targets := vmlinux
# The actual objects are generated when descending,
# make sure no implicit rule kicks in
$(sort $(vmlinux-deps)): $(vmlinux-dirs) ;
# Handle descending into subdirectories listed in $(vmlinux-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 += $(vmlinux-dirs)
$(vmlinux-dirs): prepare
$(Q)$(MAKE) $(build)=$@ need-builtin=1 need-modorder=1
$(sort $(vmlinux-deps)): descend ;
filechk_kernel.release = \
echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
@ -1106,24 +1119,9 @@ scripts: scripts_basic scripts_dtc
# archprepare is used in arch Makefiles and when processed asm symlink,
# version.h and scripts_basic is processed / created.
PHONY += prepare archprepare prepare3
PHONY += prepare archprepare
# prepare3 is used to check if we are building in a separate output directory,
# and if so do:
# 1) Check that make has not been executed in the kernel src $(srctree)
prepare3: include/config/kernel.release
ifdef building_out_of_srctree
@$(kecho) ' Using $(srctree) as source for kernel'
$(Q)if [ -f $(srctree)/.config -o \
-d $(srctree)/include/config -o \
-d $(srctree)/arch/$(SRCARCH)/include/generated ]; then \
echo >&2 " $(srctree) is not clean, please run 'make ARCH=$(ARCH) mrproper'"; \
echo >&2 " in the '$(srctree)' directory.";\
/bin/false; \
fi;
endif
archprepare: archheaders archscripts scripts prepare3 outputmakefile \
archprepare: outputmakefile archheaders archscripts scripts include/config/kernel.release \
asm-generic $(version_h) $(autoksyms_h) include/generated/utsrelease.h
prepare0: archprepare
@ -1248,7 +1246,7 @@ kselftest-merge:
$(if $(wildcard $(objtree)/.config),, $(error No .config exists, config your kernel first!))
$(Q)find $(srctree)/tools/testing/selftests -name config | \
xargs $(srctree)/scripts/kconfig/merge_config.sh -m $(objtree)/.config
+$(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig
$(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig
# ---------------------------------------------------------------------------
# Devicetree files
@ -1259,11 +1257,11 @@ endif
ifneq ($(dtstree),)
%.dtb: prepare3 scripts_dtc
%.dtb: include/config/kernel.release scripts_dtc
$(Q)$(MAKE) $(build)=$(dtstree) $(dtstree)/$@
PHONY += dtbs dtbs_install dt_binding_check
dtbs dtbs_check: prepare3 scripts_dtc
dtbs dtbs_check: include/config/kernel.release scripts_dtc
$(Q)$(MAKE) $(build)=$(dtstree)
dtbs_check: export CHECK_DTBS=1
@ -1302,17 +1300,16 @@ all: modules
PHONY += modules
modules: $(if $(KBUILD_BUILTIN),vmlinux) modules.order modules.builtin
@$(kecho) ' Building modules, stage 2.';
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
$(Q)$(CONFIG_SHELL) $(srctree)/scripts/modules-check.sh
modules.order: $(vmlinux-dirs)
$(Q)$(AWK) '!x[$$0]++' $(addsuffix /$@, $(vmlinux-dirs)) > $@
modules.order: descend
$(Q)$(AWK) '!x[$$0]++' $(addsuffix /$@, $(build-dirs)) > $@
modbuiltin-dirs := $(addprefix _modbuiltin_, $(vmlinux-dirs))
modbuiltin-dirs := $(addprefix _modbuiltin_, $(build-dirs))
modules.builtin: $(modbuiltin-dirs)
$(Q)$(AWK) '!x[$$0]++' $(addsuffix /$@, $(vmlinux-dirs)) > $@
$(Q)$(AWK) '!x[$$0]++' $(addsuffix /$@, $(build-dirs)) > $@
PHONY += $(modbuiltin-dirs)
# tristate.conf is not included from this Makefile. Add it as a prerequisite
@ -1385,12 +1382,14 @@ CLEAN_FILES += modules.builtin.modinfo
# Directories & files removed with 'make mrproper'
MRPROPER_DIRS += include/config include/generated \
arch/$(SRCARCH)/include/generated .tmp_objdiff
arch/$(SRCARCH)/include/generated .tmp_objdiff \
debian/ snap/ tar-install/
MRPROPER_FILES += .config .config.old .version \
Module.symvers \
signing_key.pem signing_key.priv signing_key.x509 \
x509.genkey extra_certificates signing_key.x509.keyid \
signing_key.x509.signer vmlinux-gdb.py
signing_key.x509.signer vmlinux-gdb.py \
*.spec
# Directories & files removed with 'make distclean'
DISTCLEAN_DIRS +=
@ -1400,11 +1399,8 @@ DISTCLEAN_FILES += tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS
#
clean: rm-dirs := $(CLEAN_DIRS)
clean: rm-files := $(CLEAN_FILES)
clean-dirs := $(addprefix _clean_, . $(vmlinux-alldirs))
PHONY += $(clean-dirs) clean archclean vmlinuxclean
$(clean-dirs):
$(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
PHONY += archclean vmlinuxclean
vmlinuxclean:
$(Q)$(CONFIG_SHELL) $(srctree)/scripts/link-vmlinux.sh clean
@ -1445,13 +1441,11 @@ distclean: mrproper
# Packaging of the kernel to various formats
# ---------------------------------------------------------------------------
package-dir := scripts/package
%src-pkg: FORCE
$(Q)$(MAKE) $(build)=$(package-dir) $@
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.package $@
%pkg: include/config/kernel.release FORCE
$(Q)$(MAKE) $(build)=$(package-dir) $@
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.package $@
# Brief documentation of the typical targets used
# ---------------------------------------------------------------------------
@ -1525,7 +1519,7 @@ help:
@echo ' or "cd tools; make help"'
@echo ''
@echo 'Kernel packaging:'
@$(MAKE) $(build)=$(package-dir) help
@$(MAKE) -f $(srctree)/scripts/Makefile.package help
@echo ''
@echo 'Documentation targets:'
@$(MAKE) -f $(srctree)/Documentation/Makefile dochelp
@ -1550,7 +1544,7 @@ help:
@echo ' make C=1 [targets] Check re-compiled c source with $$CHECK (sparse by default)'
@echo ' make C=2 [targets] Force check of all c source with $$CHECK'
@echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections'
@echo ' make W=n [targets] Enable extra gcc checks, n=1,2,3 where'
@echo ' make W=n [targets] Enable extra build checks, n=1,2,3 where'
@echo ' 1: warnings which may be relevant and do not occur too often'
@echo ' 2: warnings which occur quite often but may still be relevant'
@echo ' 3: more obscure warnings, can most likely be ignored'
@ -1579,7 +1573,7 @@ $(help-board-dirs): help-%:
DOC_TARGETS := xmldocs latexdocs pdfdocs htmldocs epubdocs cleandocs \
linkcheckdocs dochelp refcheckdocs
PHONY += $(DOC_TARGETS)
$(DOC_TARGETS): scripts_basic FORCE
$(DOC_TARGETS):
$(Q)$(MAKE) $(build)=Documentation $@
# Misc
@ -1624,13 +1618,9 @@ $(objtree)/Module.symvers:
echo " is missing; modules will have no dependencies and modversions."; \
echo )
module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD))
PHONY += $(module-dirs) modules
$(module-dirs): prepare $(objtree)/Module.symvers
$(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@) need-modorder=1
modules: $(module-dirs)
@$(kecho) ' Building modules, stage 2.';
build-dirs := $(KBUILD_EXTMOD)
PHONY += modules
modules: descend $(objtree)/Module.symvers
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
PHONY += modules_install
@ -1646,14 +1636,13 @@ PHONY += _emodinst_post
_emodinst_post: _emodinst_
$(call cmd,depmod)
clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD))
PHONY += $(clean-dirs) clean
$(clean-dirs):
$(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
clean-dirs := $(KBUILD_EXTMOD)
clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers
PHONY += /
/:
@echo >&2 '"$(MAKE) /" is no longer supported. Please use "$(MAKE) ./" instead.'
PHONY += help
help:
@echo ' Building external modules.'
@ -1667,6 +1656,21 @@ help:
PHONY += prepare
endif # KBUILD_EXTMOD
# 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) $(build)=$@ single-build=$(single-build) need-builtin=1 need-modorder=1
clean-dirs := $(addprefix _clean_, $(clean-dirs))
PHONY += $(clean-dirs) clean
$(clean-dirs):
$(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
clean: $(clean-dirs)
$(call cmd,rmdirs)
$(call cmd,rmfiles)
@ -1688,7 +1692,7 @@ clean: $(clean-dirs)
# Generate tags for editors
# ---------------------------------------------------------------------------
quiet_cmd_tags = GEN $@
cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@
cmd_tags = $(BASH) $(srctree)/scripts/tags.sh $@
tags TAGS cscope gtags: FORCE
$(call cmd,tags)
@ -1709,7 +1713,7 @@ versioncheck:
| xargs $(PERL) -w $(srctree)/scripts/checkversion.pl
coccicheck:
$(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@
$(Q)$(BASH) $(srctree)/scripts/$@
namespacecheck:
$(PERL) $(srctree)/scripts/namespace.pl
@ -1757,45 +1761,47 @@ tools/%: FORCE
# Single targets
# ---------------------------------------------------------------------------
# Single targets are compatible with:
# - build with mixed source and output
# - build with separate output dir 'make O=...'
# - external modules
# To build individual files in subdirectories, you can do like this:
#
# target-dir => where to store outputfile
# build-dir => directory in kernel source tree to use
# make foo/bar/baz.s
#
# The supported suffixes for single-target are listed in 'single-targets'
#
# To build only under specific subdirectories, you can do like this:
#
# make foo/bar/baz/
build-target = $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD)/)$@
build-dir = $(patsubst %/,%,$(dir $(build-target)))
ifdef single-build
single-all := $(filter $(single-targets), $(MAKECMDGOALS))
# .ko is special because modpost is needed
single-ko := $(sort $(filter %.ko, $(single-all)))
single-no-ko := $(sort $(patsubst %.ko,%.mod, $(single-all)))
$(single-ko): single_modpost
@:
$(single-no-ko): descend
@:
%.i: prepare FORCE
$(Q)$(MAKE) $(build)=$(build-dir) $(build-target)
%.ll: prepare FORCE
$(Q)$(MAKE) $(build)=$(build-dir) $(build-target)
%.lst: prepare FORCE
$(Q)$(MAKE) $(build)=$(build-dir) $(build-target)
%.o: prepare FORCE
$(Q)$(MAKE) $(build)=$(build-dir) $(build-target)
%.s: prepare FORCE
$(Q)$(MAKE) $(build)=$(build-dir) $(build-target)
%.symtypes: prepare FORCE
$(Q)$(MAKE) $(build)=$(build-dir) $(build-target)
ifeq ($(KBUILD_EXTMOD),)
# For the single build of an in-tree module, use a temporary file to avoid
# For the single build of in-tree modules, use a temporary file to avoid
# the situation of modules_install installing an invalid modules.order.
%.ko: MODORDER := .modules.tmp
MODORDER := .modules.tmp
endif
%.ko: prepare FORCE
$(Q)$(MAKE) $(build)=$(build-dir) $(build-target:.ko=.mod)
$(Q)echo $(build-target) > $(MODORDER)
PHONY += single_modpost
single_modpost: $(single-no-ko)
$(Q){ $(foreach m, $(single-ko), echo $(extmod-prefix)$m;) } > $(MODORDER)
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
# Modules
PHONY += /
/: ./
KBUILD_MODULES := 1
%/: prepare FORCE
$(Q)$(MAKE) KBUILD_MODULES=1 $(build)=$(build-dir) need-modorder=1
export KBUILD_SINGLE_TARGETS := $(addprefix $(extmod-prefix), $(single-no-ko))
single-build = $(if $(filter-out $@/, $(single-no-ko)),1)
endif
# FIXME Should go into a make.lib or something
# ===========================================================================
@ -1816,9 +1822,9 @@ existing-targets := $(wildcard $(sort $(targets)))
-include $(foreach f,$(existing-targets),$(dir $(f)).$(notdir $(f)).cmd)
endif # ifeq ($(config-targets),1)
endif # ifeq ($(mixed-targets),1)
endif # need-sub-make
endif # config-targets
endif # mixed-build
endif # need-sub-make
PHONY += FORCE
FORCE:

7
arch/Kconfig
View File

@ -292,6 +292,13 @@ config ARCH_32BIT_OFF_T
still support 32-bit off_t. This option is enabled for all such
architectures explicitly.
config HAVE_ASM_MODVERSIONS
bool
help
This symbol should be selected by an architecure if it provides
<asm/asm-prototypes.h> to support the module versioning for symbols
exported from assembly code.
config HAVE_REGS_AND_STACK_ACCESS_API
bool
help

1
arch/alpha/Kconfig
View File

@ -11,6 +11,7 @@ config ALPHA
select PCI_DOMAINS if PCI
select PCI_SYSCALL if PCI
select HAVE_AOUT
select HAVE_ASM_MODVERSIONS
select HAVE_IDE
select HAVE_OPROFILE
select HAVE_PCSPKR_PLATFORM

8
arch/arc/Makefile
View File

@ -48,14 +48,6 @@ endif
cfi := $(call as-instr,.cfi_startproc\n.cfi_endproc,-DARC_DW2_UNWIND_AS_CFI)
cflags-$(CONFIG_ARC_DW2_UNWIND) += -fasynchronous-unwind-tables $(cfi)
ifndef CONFIG_CC_OPTIMIZE_FOR_SIZE
# Generic build system uses -O2, we want -O3
# Note: No need to add to cflags-y as that happens anyways
#
# Disable the false maybe-uninitialized warings gcc spits out at -O3
ARCH_CFLAGS += -O3 $(call cc-disable-warning,maybe-uninitialized,)
endif
# small data is default for elf32 tool-chain. If not usable, disable it
# This also allows repurposing GP as scratch reg to gcc reg allocator
disable_small_data := y

1
arch/arc/configs/axs101_defconfig
View File

@ -9,6 +9,7 @@ CONFIG_NAMESPACES=y
# CONFIG_UTS_NS is not set
# CONFIG_PID_NS is not set
CONFIG_BLK_DEV_INITRD=y
CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3=y
CONFIG_EMBEDDED=y
CONFIG_PERF_EVENTS=y
# CONFIG_VM_EVENT_COUNTERS is not set

1
arch/arc/configs/axs103_defconfig
View File

@ -9,6 +9,7 @@ CONFIG_NAMESPACES=y
# CONFIG_UTS_NS is not set
# CONFIG_PID_NS is not set
CONFIG_BLK_DEV_INITRD=y
CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3=y
CONFIG_EMBEDDED=y
CONFIG_PERF_EVENTS=y
# CONFIG_VM_EVENT_COUNTERS is not set

1
arch/arc/configs/axs103_smp_defconfig
View File

@ -9,6 +9,7 @@ CONFIG_NAMESPACES=y
# CONFIG_UTS_NS is not set
# CONFIG_PID_NS is not set
CONFIG_BLK_DEV_INITRD=y
CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3=y
CONFIG_EMBEDDED=y
CONFIG_PERF_EVENTS=y
# CONFIG_VM_EVENT_COUNTERS is not set

1
arch/arc/configs/haps_hs_defconfig
View File

@ -10,6 +10,7 @@ CONFIG_NAMESPACES=y
# CONFIG_UTS_NS is not set
# CONFIG_PID_NS is not set
CONFIG_BLK_DEV_INITRD=y
CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3=y
CONFIG_EXPERT=y
CONFIG_PERF_EVENTS=y
# CONFIG_COMPAT_BRK is not set

1
arch/arc/configs/haps_hs_smp_defconfig
View File

@ -10,6 +10,7 @@ CONFIG_NAMESPACES=y
# CONFIG_UTS_NS is not set
# CONFIG_PID_NS is not set
CONFIG_BLK_DEV_INITRD=y
CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3=y
CONFIG_EMBEDDED=y
CONFIG_PERF_EVENTS=y
# CONFIG_VM_EVENT_COUNTERS is not set

1
arch/arc/configs/hsdk_defconfig
View File

@ -9,6 +9,7 @@ CONFIG_NAMESPACES=y
# CONFIG_PID_NS is not set
CONFIG_BLK_DEV_INITRD=y
CONFIG_BLK_DEV_RAM=y
CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3=y
CONFIG_EMBEDDED=y
CONFIG_PERF_EVENTS=y
# CONFIG_VM_EVENT_COUNTERS is not set

1
arch/arc/configs/nps_defconfig
View File

@ -6,6 +6,7 @@ CONFIG_HIGH_RES_TIMERS=y
CONFIG_IKCONFIG=y
CONFIG_IKCONFIG_PROC=y
CONFIG_BLK_DEV_INITRD=y
CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3=y
CONFIG_SYSCTL_SYSCALL=y
# CONFIG_EPOLL is not set
# CONFIG_SIGNALFD is not set

1
arch/arc/configs/nsim_700_defconfig
View File

@ -10,6 +10,7 @@ CONFIG_NAMESPACES=y
# CONFIG_UTS_NS is not set
# CONFIG_PID_NS is not set
CONFIG_BLK_DEV_INITRD=y
CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3=y
CONFIG_KALLSYMS_ALL=y
CONFIG_EMBEDDED=y
CONFIG_PERF_EVENTS=y

1
arch/arc/configs/nsim_hs_defconfig
View File

@ -10,6 +10,7 @@ CONFIG_NAMESPACES=y
# CONFIG_UTS_NS is not set
# CONFIG_PID_NS is not set
CONFIG_BLK_DEV_INITRD=y
CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3=y
CONFIG_KALLSYMS_ALL=y
CONFIG_EMBEDDED=y
CONFIG_PERF_EVENTS=y

1
arch/arc/configs/nsim_hs_smp_defconfig
View File

@ -8,6 +8,7 @@ CONFIG_NAMESPACES=y
# CONFIG_UTS_NS is not set
# CONFIG_PID_NS is not set
CONFIG_BLK_DEV_INITRD=y
CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3=y
CONFIG_KALLSYMS_ALL=y
CONFIG_EMBEDDED=y
CONFIG_PERF_EVENTS=y

1
arch/arc/configs/nsimosci_defconfig
View File

@ -10,6 +10,7 @@ CONFIG_NAMESPACES=y
# CONFIG_UTS_NS is not set
# CONFIG_PID_NS is not set
CONFIG_BLK_DEV_INITRD=y
CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3=y
CONFIG_KALLSYMS_ALL=y
CONFIG_EMBEDDED=y
CONFIG_PERF_EVENTS=y

1
arch/arc/configs/nsimosci_hs_defconfig
View File

@ -10,6 +10,7 @@ CONFIG_NAMESPACES=y
# CONFIG_UTS_NS is not set
# CONFIG_PID_NS is not set
CONFIG_BLK_DEV_INITRD=y
CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3=y
CONFIG_KALLSYMS_ALL=y
CONFIG_EMBEDDED=y
CONFIG_PERF_EVENTS=y

1
arch/arc/configs/nsimosci_hs_smp_defconfig
View File

@ -8,6 +8,7 @@ CONFIG_IKCONFIG_PROC=y
# CONFIG_UTS_NS is not set
# CONFIG_PID_NS is not set
CONFIG_BLK_DEV_INITRD=y
CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3=y
CONFIG_PERF_EVENTS=y
# CONFIG_COMPAT_BRK is not set
CONFIG_KPROBES=y

1
arch/arc/configs/tb10x_defconfig
View File

@ -14,6 +14,7 @@ CONFIG_INITRAMFS_SOURCE="../tb10x-rootfs.cpio"
CONFIG_INITRAMFS_ROOT_UID=2100
CONFIG_INITRAMFS_ROOT_GID=501
# CONFIG_RD_GZIP is not set
CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3=y
CONFIG_SYSCTL_SYSCALL=y
CONFIG_KALLSYMS_ALL=y
# CONFIG_AIO is not set

1
arch/arc/configs/vdk_hs38_defconfig
View File

@ -4,6 +4,7 @@ CONFIG_HIGH_RES_TIMERS=y
CONFIG_IKCONFIG=y
CONFIG_IKCONFIG_PROC=y
CONFIG_BLK_DEV_INITRD=y
CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3=y
CONFIG_EMBEDDED=y
CONFIG_PERF_EVENTS=y
# CONFIG_VM_EVENT_COUNTERS is not set

1
arch/arc/configs/vdk_hs38_smp_defconfig
View File

@ -4,6 +4,7 @@ CONFIG_HIGH_RES_TIMERS=y
CONFIG_IKCONFIG=y
CONFIG_IKCONFIG_PROC=y
CONFIG_BLK_DEV_INITRD=y
CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3=y
CONFIG_EMBEDDED=y
CONFIG_PERF_EVENTS=y
# CONFIG_VM_EVENT_COUNTERS is not set

2
arch/arm/Makefile
View File

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

5
arch/arm/kvm/Makefile
View File

@ -8,13 +8,14 @@ ifeq ($(plus_virt),+virt)
plus_virt_def := -DREQUIRES_VIRT=1
endif
KVM := ../../../virt/kvm
ccflags-y += -I $(srctree)/$(src) -I $(srctree)/virt/kvm/arm/vgic
CFLAGS_arm.o := $(plus_virt_def)
CFLAGS_$(KVM)/arm/arm.o := $(plus_virt_def)
AFLAGS_init.o := -Wa,-march=armv7-a$(plus_virt)
AFLAGS_interrupts.o := -Wa,-march=armv7-a$(plus_virt)
KVM := ../../../virt/kvm
kvm-arm-y = $(KVM)/kvm_main.o $(KVM)/coalesced_mmio.o $(KVM)/eventfd.o $(KVM)/vfio.o
obj-$(CONFIG_KVM_ARM_HOST) += hyp/

1
arch/arm64/Kconfig
View File

@ -134,6 +134,7 @@ config ARM64
select HAVE_ARCH_TRANSPARENT_HUGEPAGE
select HAVE_ARCH_VMAP_STACK
select HAVE_ARM_SMCCC
select HAVE_ASM_MODVERSIONS
select HAVE_EBPF_JIT
select HAVE_C_RECORDMCOUNT
select HAVE_CMPXCHG_DOUBLE

2
arch/arm64/Makefile
View File

@ -108,7 +108,7 @@ endif
CHECKFLAGS += -D__aarch64__
ifeq ($(CONFIG_ARM64_MODULE_PLTS),y)
KBUILD_LDFLAGS_MODULE += -T $(srctree)/arch/arm64/kernel/module.lds
KBUILD_LDS_MODULE += $(srctree)/arch/arm64/kernel/module.lds
endif
# Default value

1
arch/ia64/Kconfig
View File

@ -19,6 +19,7 @@ config IA64
select PCI_DOMAINS if PCI
select PCI_MSI
select PCI_SYSCALL if PCI
select HAVE_ASM_MODVERSIONS
select HAVE_UNSTABLE_SCHED_CLOCK
select HAVE_EXIT_THREAD
select HAVE_IDE

2
arch/ia64/Makefile
View File

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

1
arch/m68k/Kconfig
View File

@ -12,6 +12,7 @@ config M68K
select DMA_DIRECT_REMAP if HAS_DMA && MMU && !COLDFIRE
select HAVE_IDE
select HAVE_AOUT if MMU
select HAVE_ASM_MODVERSIONS
select HAVE_DEBUG_BUGVERBOSE
select GENERIC_IRQ_SHOW
select GENERIC_ATOMIC64

2
arch/m68k/Makefile
View File

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

1
arch/mips/Kconfig
View File

@ -44,6 +44,7 @@ config MIPS
select HAVE_ARCH_SECCOMP_FILTER
select HAVE_ARCH_TRACEHOOK
select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
select HAVE_ASM_MODVERSIONS
select HAVE_EBPF_JIT if (!CPU_MICROMIPS)
select HAVE_CONTEXT_TRACKING
select HAVE_COPY_THREAD_TLS

2
arch/mips/boot/Makefile
View File

@ -160,7 +160,7 @@ targets += vmlinux.lzo.itb
quiet_cmd_itb-image = ITB $@
cmd_itb-image = \
env PATH="$(objtree)/scripts/dtc:$(PATH)" \
$(CONFIG_SHELL) $(MKIMAGE) \
$(BASH) $(MKIMAGE) \
-D "-I dts -O dtb -p 500 \
--include $(objtree)/arch/mips \
--warning no-unit_address_vs_reg" \

2
arch/parisc/Makefile
View File

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

1
arch/powerpc/Kconfig
View File

@ -177,6 +177,7 @@ config PPC
select HAVE_ARCH_NVRAM_OPS
select HAVE_ARCH_SECCOMP_FILTER
select HAVE_ARCH_TRACEHOOK
select HAVE_ASM_MODVERSIONS
select HAVE_C_RECORDMCOUNT
select HAVE_CBPF_JIT if !PPC64
select HAVE_STACKPROTECTOR if PPC64 && $(cc-option,-mstack-protector-guard=tls -mstack-protector-guard-reg=r13)

2
arch/powerpc/Makefile
View File

@ -65,7 +65,7 @@ UTS_MACHINE := $(subst $(space),,$(machine-y))
ifdef CONFIG_PPC32
KBUILD_LDFLAGS_MODULE += arch/powerpc/lib/crtsavres.o
else
KBUILD_LDFLAGS_MODULE += -T $(srctree)/arch/powerpc/kernel/module.lds
KBUILD_LDS_MODULE += $(srctree)/arch/powerpc/kernel/module.lds
ifeq ($(call ld-ifversion, -ge, 225000000, y),y)
# Have the linker provide sfpr if possible.
# There is a corresponding test in arch/powerpc/lib/Makefile

2
arch/powerpc/Makefile.postlink
View File

@ -18,7 +18,7 @@ quiet_cmd_relocs_check = CHKREL $@
ifdef CONFIG_PPC_BOOK3S_64
cmd_relocs_check = \
$(CONFIG_SHELL) $(srctree)/arch/powerpc/tools/relocs_check.sh "$(OBJDUMP)" "$@" ; \
$(CONFIG_SHELL) $(srctree)/arch/powerpc/tools/unrel_branch_check.sh "$(OBJDUMP)" "$@"
$(BASH) $(srctree)/arch/powerpc/tools/unrel_branch_check.sh "$(OBJDUMP)" "$@"
else
cmd_relocs_check = \
$(CONFIG_SHELL) $(srctree)/arch/powerpc/tools/relocs_check.sh "$(OBJDUMP)" "$@"

2
arch/powerpc/kernel/prom_init_check.sh
View File

@ -33,7 +33,7 @@ OBJ="$2"
ERROR=0
function check_section()
check_section()
{
file=$1
section=$2

1
arch/riscv/Kconfig
View File

@ -31,6 +31,7 @@ config RISCV
select GENERIC_SMP_IDLE_THREAD
select GENERIC_ATOMIC64 if !64BIT
select HAVE_ARCH_AUDITSYSCALL
select HAVE_ASM_MODVERSIONS
select HAVE_MEMBLOCK_NODE_MAP
select HAVE_DMA_CONTIGUOUS
select HAVE_FUTEX_CMPXCHG if FUTEX

2
arch/riscv/Makefile
View File

@ -52,7 +52,7 @@ ifeq ($(CONFIG_CMODEL_MEDANY),y)
KBUILD_CFLAGS += -mcmodel=medany
endif
ifeq ($(CONFIG_MODULE_SECTIONS),y)
KBUILD_LDFLAGS_MODULE += -T $(srctree)/arch/riscv/kernel/module.lds
KBUILD_LDS_MODULE += $(srctree)/arch/riscv/kernel/module.lds
endif
ifeq ($(CONFIG_PERF_EVENTS),y)
KBUILD_CFLAGS += -fno-omit-frame-pointer

1
arch/s390/Kconfig
View File

@ -132,6 +132,7 @@ config S390
select HAVE_ARCH_TRACEHOOK
select HAVE_ARCH_TRANSPARENT_HUGEPAGE
select HAVE_ARCH_VMAP_STACK
select HAVE_ASM_MODVERSIONS
select HAVE_EBPF_JIT if PACK_STACK && HAVE_MARCH_Z196_FEATURES
select HAVE_CMPXCHG_DOUBLE
select HAVE_CMPXCHG_LOCAL

1
arch/sparc/Kconfig
View File

@ -17,6 +17,7 @@ config SPARC
select ARCH_MIGHT_HAVE_PC_SERIO
select OF
select OF_PROMTREE
select HAVE_ASM_MODVERSIONS
select HAVE_IDE
select HAVE_OPROFILE
select HAVE_ARCH_KGDB if !SMP || SPARC64

1
arch/um/Kconfig
View File

@ -9,6 +9,7 @@ config UML
select ARCH_NO_PREEMPT
select HAVE_ARCH_AUDITSYSCALL
select HAVE_ARCH_SECCOMP_FILTER
select HAVE_ASM_MODVERSIONS
select HAVE_UID16
select HAVE_FUTEX_CMPXCHG if FUTEX
select HAVE_DEBUG_KMEMLEAK

1
arch/x86/Kconfig
View File

@ -147,6 +147,7 @@ config X86
select HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD if X86_64
select HAVE_ARCH_VMAP_STACK if X86_64
select HAVE_ARCH_WITHIN_STACK_FRAMES
select HAVE_ASM_MODVERSIONS
select HAVE_CMPXCHG_DOUBLE
select HAVE_CMPXCHG_LOCAL
select HAVE_CONTEXT_TRACKING if X86_64

3
arch/x86/entry/vdso/Makefile
View File

@ -89,6 +89,7 @@ $(vobjs): KBUILD_CFLAGS := $(filter-out $(GCC_PLUGINS_CFLAGS) $(RETPOLINE_CFLAGS
#
CFLAGS_REMOVE_vdso-note.o = -pg
CFLAGS_REMOVE_vclock_gettime.o = -pg
CFLAGS_REMOVE_vdso32/vclock_gettime.o = -pg
CFLAGS_REMOVE_vgetcpu.o = -pg
CFLAGS_REMOVE_vvar.o = -pg
@ -128,7 +129,7 @@ $(obj)/%.so: $(obj)/%.so.dbg FORCE
$(obj)/vdsox32.so.dbg: $(obj)/vdsox32.lds $(vobjx32s) FORCE
$(call if_changed,vdso_and_check)
CPPFLAGS_vdso32.lds = $(CPPFLAGS_vdso.lds)
CPPFLAGS_vdso32/vdso32.lds = $(CPPFLAGS_vdso.lds)
VDSO_LDFLAGS_vdso32.lds = -m elf_i386 -soname linux-gate.so.1
targets += vdso32/vdso32.lds

6
drivers/gpu/drm/amd/display/dc/calcs/Makefile
View File

@ -36,9 +36,9 @@ ifdef CONFIG_CC_IS_CLANG
calcs_ccflags += -msse2
endif
CFLAGS_dcn_calcs.o := $(calcs_ccflags)
CFLAGS_dcn_calc_auto.o := $(calcs_ccflags)
CFLAGS_dcn_calc_math.o := $(calcs_ccflags) -Wno-tautological-compare
CFLAGS_$(AMDDALPATH)/dc/calcs/dcn_calcs.o := $(calcs_ccflags)
CFLAGS_$(AMDDALPATH)/dc/calcs/dcn_calc_auto.o := $(calcs_ccflags)
CFLAGS_$(AMDDALPATH)/dc/calcs/dcn_calc_math.o := $(calcs_ccflags) -Wno-tautological-compare
BW_CALCS = dce_calcs.o bw_fixed.o custom_float.o

4
drivers/gpu/drm/amd/display/dc/dcn20/Makefile
View File

@ -16,10 +16,10 @@ else ifneq ($(call cc-option, -mstack-alignment=16),)
cc_stack_align := -mstack-alignment=16
endif
CFLAGS_dcn20_resource.o := -mhard-float -msse $(cc_stack_align)
CFLAGS_$(AMDDALPATH)/dc/dcn20/dcn20_resource.o := -mhard-float -msse $(cc_stack_align)
ifdef CONFIG_CC_IS_CLANG
CFLAGS_dcn20_resource.o += -msse2
CFLAGS_$(AMDDALPATH)/dc/dcn20/dcn20_resource.o += -msse2
endif
AMD_DAL_DCN20 = $(addprefix $(AMDDALPATH)/dc/dcn20/,$(DCN20))

2
drivers/gpu/drm/amd/display/dc/dcn21/Makefile
View File

@ -3,7 +3,7 @@
DCN21 = dcn21_hubp.o dcn21_hubbub.o dcn21_resource.o
CFLAGS_dcn21_resource.o := -mhard-float -msse -mpreferred-stack-boundary=4
CFLAGS_$(AMDDALPATH)/dc/dcn21/dcn21_resource.o := -mhard-float -msse -mpreferred-stack-boundary=4
AMD_DAL_DCN21 = $(addprefix $(AMDDALPATH)/dc/dcn21/,$(DCN21))

25
drivers/gpu/drm/amd/display/dc/dml/Makefile
View File

@ -36,25 +36,22 @@ ifdef CONFIG_CC_IS_CLANG
dml_ccflags += -msse2
endif
CFLAGS_display_mode_lib.o := $(dml_ccflags)
CFLAGS_$(AMDDALPATH)/dc/dml/display_mode_lib.o := $(dml_ccflags)
ifdef CONFIG_DRM_AMD_DC_DCN2_0
CFLAGS_display_mode_vba.o := $(dml_ccflags)
CFLAGS_display_mode_vba_20.o := $(dml_ccflags)
CFLAGS_display_rq_dlg_calc_20.o := $(dml_ccflags)
CFLAGS_display_mode_vba_20v2.o := $(dml_ccflags)
CFLAGS_display_rq_dlg_calc_20v2.o := $(dml_ccflags)
CFLAGS_$(AMDDALPATH)/dc/dml/display_mode_vba.o := $(dml_ccflags)
CFLAGS_$(AMDDALPATH)/dc/dml/dcn20/display_mode_vba_20.o := $(dml_ccflags)
CFLAGS_$(AMDDALPATH)/dc/dml/dcn20/display_rq_dlg_calc_20.o := $(dml_ccflags)
CFLAGS_$(AMDDALPATH)/dc/dml/dcn20/display_mode_vba_20v2.o := $(dml_ccflags)
CFLAGS_$(AMDDALPATH)/dc/dml/dcn20/display_rq_dlg_calc_20v2.o := $(dml_ccflags)
endif
ifdef CONFIG_DRM_AMD_DC_DCN2_1
CFLAGS_display_mode_vba_21.o := $(dml_ccflags)
CFLAGS_display_rq_dlg_calc_21.o := $(dml_ccflags)
CFLAGS_$(AMDDALPATH)/dc/dml/dcn21/display_mode_vba_21.o := $(dml_ccflags)
CFLAGS_$(AMDDALPATH)/dc/dml/dcn21/display_rq_dlg_calc_21.o := $(dml_ccflags)
endif
ifdef CONFIG_DRM_AMD_DCN3AG
CFLAGS_display_mode_vba_3ag.o := $(dml_ccflags)
endif
CFLAGS_dml1_display_rq_dlg_calc.o := $(dml_ccflags)
CFLAGS_display_rq_dlg_helpers.o := $(dml_ccflags)
CFLAGS_dml_common_defs.o := $(dml_ccflags)
CFLAGS_$(AMDDALPATH)/dc/dml/dml1_display_rq_dlg_calc.o := $(dml_ccflags)
CFLAGS_$(AMDDALPATH)/dc/dml/display_rq_dlg_helpers.o := $(dml_ccflags)
CFLAGS_$(AMDDALPATH)/dc/dml/dml_common_defs.o := $(dml_ccflags)
DML = display_mode_lib.o display_rq_dlg_helpers.o dml1_display_rq_dlg_calc.o \
dml_common_defs.o

7
drivers/gpu/drm/amd/display/dc/dsc/Makefile
View File

@ -13,10 +13,9 @@ ifdef CONFIG_CC_IS_CLANG
dsc_ccflags += -msse2
endif
CFLAGS_rc_calc.o := $(dsc_ccflags)
CFLAGS_rc_calc_dpi.o := $(dsc_ccflags)
CFLAGS_codec_main_amd.o := $(dsc_ccflags)
CFLAGS_dc_dsc.o := $(dsc_ccflags)
CFLAGS_$(AMDDALPATH)/dc/dsc/rc_calc.o := $(dsc_ccflags)
CFLAGS_$(AMDDALPATH)/dc/dsc/rc_calc_dpi.o := $(dsc_ccflags)
CFLAGS_$(AMDDALPATH)/dc/dsc/dc_dsc.o := $(dsc_ccflags)
DSC = dc_dsc.o rc_calc.o rc_calc_dpi.o

2
drivers/gpu/drm/i915/Makefile
View File

@ -26,7 +26,7 @@ subdir-ccflags-$(CONFIG_DRM_I915_WERROR) += -Werror
# Fine grained warnings disable
CFLAGS_i915_pci.o = $(call cc-disable-warning, override-init)
CFLAGS_intel_fbdev.o = $(call cc-disable-warning, override-init)
CFLAGS_display/intel_fbdev.o = $(call cc-disable-warning, override-init)
subdir-ccflags-y += \
$(call as-instr,movntdqa (%eax)$(comma)%xmm0,-DCONFIG_AS_MOVNTDQA)

2
drivers/net/ethernet/aquantia/atlantic/hw_atl/Makefile
View File

@ -1,2 +0,0 @@
# SPDX-License-Identifier: GPL-2.0
# kbuild requires Makefile in a directory to build individual objects

2
drivers/net/ethernet/mellanox/mlx5/core/accel/Makefile
View File

@ -1,2 +0,0 @@
# SPDX-License-Identifier: GPL-2.0-only
subdir-ccflags-y += -I$(src)/..

2
drivers/net/ethernet/mellanox/mlx5/core/diag/Makefile
View File

@ -1,2 +0,0 @@
# SPDX-License-Identifier: GPL-2.0-only
subdir-ccflags-y += -I$(src)/..

2
drivers/net/ethernet/mellanox/mlx5/core/en/Makefile
View File

@ -1,2 +0,0 @@
# SPDX-License-Identifier: GPL-2.0-only
subdir-ccflags-y += -I$(src)/..

1
drivers/net/ethernet/mellanox/mlx5/core/en/xsk/Makefile
View File

@ -1 +0,0 @@
subdir-ccflags-y += -I$(src)/../..

2
drivers/net/ethernet/mellanox/mlx5/core/en_accel/Makefile
View File

@ -1,2 +0,0 @@
# SPDX-License-Identifier: GPL-2.0-only
subdir-ccflags-y += -I$(src)/..

2
drivers/net/ethernet/mellanox/mlx5/core/fpga/Makefile
View File

@ -1,2 +0,0 @@
# SPDX-License-Identifier: GPL-2.0-only
subdir-ccflags-y += -I$(src)/..

2
drivers/net/ethernet/mellanox/mlx5/core/ipoib/Makefile
View File

@ -1,2 +0,0 @@
# SPDX-License-Identifier: GPL-2.0-only
subdir-ccflags-y += -I$(src)/..

2
drivers/net/ethernet/mellanox/mlx5/core/lib/Makefile
View File

@ -1,2 +0,0 @@
# SPDX-License-Identifier: GPL-2.0-only
subdir-ccflags-y += -I$(src)/..

2
drivers/net/ethernet/netronome/nfp/bpf/Makefile
View File

@ -1,2 +0,0 @@
# SPDX-License-Identifier: GPL-2.0
# kbuild requires Makefile in a directory to build individual objects

2
drivers/net/ethernet/netronome/nfp/flower/Makefile
View File

@ -1,2 +0,0 @@
# SPDX-License-Identifier: GPL-2.0
# kbuild requires Makefile in a directory to build individual objects

2
drivers/net/ethernet/netronome/nfp/nfpcore/Makefile
View File

@ -1,2 +0,0 @@
# SPDX-License-Identifier: GPL-2.0
# kbuild requires Makefile in a directory to build individual objects

2
drivers/net/ethernet/netronome/nfp/nfpcore/nfp6000/Makefile
View File

@ -1,2 +0,0 @@
# SPDX-License-Identifier: GPL-2.0
# kbuild requires Makefile in a directory to build individual objects

2
drivers/net/ethernet/netronome/nfp/nic/Makefile
View File

@ -1,2 +0,0 @@
# SPDX-License-Identifier: GPL-2.0
# kbuild requires Makefile in a directory to build individual objects

20
include/linux/compiler_types.h
View File

@ -130,10 +130,6 @@ struct ftrace_likely_data {
/*
* Force always-inline if the user requests it so via the .config.
* GCC does not warn about unused static inline functions for
* -Wunused-function. This turns out to avoid the need for complex #ifdef
* directives. Suppress the warning in clang as well by using "unused"
* function attribute, which is redundant but not harmful for gcc.
* Prefer gnu_inline, so that extern inline functions do not emit an
* externally visible function. This makes extern inline behave as per gnu89
* semantics rather than c99. This prevents multiple symbol definition errors
@ -144,15 +140,27 @@ struct ftrace_likely_data {
*/
#if !defined(CONFIG_OPTIMIZE_INLINING)
#define inline inline __attribute__((__always_inline__)) __gnu_inline \
__maybe_unused notrace
__inline_maybe_unused notrace
#else
#define inline inline __gnu_inline \
__maybe_unused notrace
__inline_maybe_unused notrace
#endif
#define __inline__ inline
#define __inline inline
/*
* GCC does not warn about unused static inline functions for -Wunused-function.
* Suppress the warning in clang as well by using __maybe_unused, but enable it
* for W=1 build. This will allow clang to find unused functions. Remove the
* __inline_maybe_unused entirely after fixing most of -Wunused-function warnings.
*/
#ifdef KBUILD_EXTRA_WARN1
#define __inline_maybe_unused
#else
#define __inline_maybe_unused __maybe_unused
#endif
/*
* Rather then using noinline to prevent stack consumption, use
* noinline_for_stack instead. For documentation reasons.

42
include/linux/export.h
View File

@ -18,9 +18,6 @@ extern struct module __this_module;
#define THIS_MODULE ((struct module *)0)
#endif
#ifdef CONFIG_MODULES
#if defined(__KERNEL__) && !defined(__GENKSYMS__)
#ifdef CONFIG_MODVERSIONS
/* Mark the CRC weak since genksyms apparently decides not to
* generate a checksums for some symbols */
@ -74,6 +71,12 @@ struct kernel_symbol {
};
#endif
#ifdef __GENKSYMS__
#define ___EXPORT_SYMBOL(sym, sec) __GENKSYMS_EXPORT_SYMBOL(sym)
#else
/* For every exported symbol, place a struct in the __ksymtab section */
#define ___EXPORT_SYMBOL(sym, sec) \
extern typeof(sym) sym; \
@ -83,7 +86,9 @@ struct kernel_symbol {
= #sym; \
__KSYMTAB_ENTRY(sym, sec)
#if defined(__DISABLE_EXPORTS)
#endif
#if !defined(CONFIG_MODULES) || defined(__DISABLE_EXPORTS)
/*
* Allow symbol exports to be disabled completely so that C code may
@ -117,37 +122,22 @@ struct kernel_symbol {
#define __cond_export_sym_0(sym, sec) /* nothing */
#else
#define __EXPORT_SYMBOL ___EXPORT_SYMBOL
#endif
#define EXPORT_SYMBOL(sym) \
__EXPORT_SYMBOL(sym, "")
#define __EXPORT_SYMBOL(sym, sec) ___EXPORT_SYMBOL(sym, sec)
#define EXPORT_SYMBOL_GPL(sym) \
__EXPORT_SYMBOL(sym, "_gpl")
#define EXPORT_SYMBOL_GPL_FUTURE(sym) \
__EXPORT_SYMBOL(sym, "_gpl_future")
#endif /* CONFIG_MODULES */
#define EXPORT_SYMBOL(sym) __EXPORT_SYMBOL(sym, "")
#define EXPORT_SYMBOL_GPL(sym) __EXPORT_SYMBOL(sym, "_gpl")
#define EXPORT_SYMBOL_GPL_FUTURE(sym) __EXPORT_SYMBOL(sym, "_gpl_future")
#ifdef CONFIG_UNUSED_SYMBOLS
#define EXPORT_UNUSED_SYMBOL(sym) __EXPORT_SYMBOL(sym, "_unused")
#define EXPORT_UNUSED_SYMBOL_GPL(sym) __EXPORT_SYMBOL(sym, "_unused_gpl")
#define EXPORT_UNUSED_SYMBOL(sym) __EXPORT_SYMBOL(sym, "_unused")
#define EXPORT_UNUSED_SYMBOL_GPL(sym) __EXPORT_SYMBOL(sym, "_unused_gpl")
#else
#define EXPORT_UNUSED_SYMBOL(sym)
#define EXPORT_UNUSED_SYMBOL_GPL(sym)
#endif
#endif /* __GENKSYMS__ */
#else /* !CONFIG_MODULES... */
#define EXPORT_SYMBOL(sym)
#define EXPORT_SYMBOL_GPL(sym)
#define EXPORT_SYMBOL_GPL_FUTURE(sym)
#define EXPORT_UNUSED_SYMBOL(sym)
#define EXPORT_UNUSED_SYMBOL_GPL(sym)
#endif /* CONFIG_MODULES */
#endif /* !__ASSEMBLY__ */
#endif /* _LINUX_EXPORT_H */

2
include/linux/vermagic.h
View File

@ -9,6 +9,8 @@
#endif
#ifdef CONFIG_PREEMPT
#define MODULE_VERMAGIC_PREEMPT "preempt "
#elif defined(CONFIG_PREEMPT_RT)
#define MODULE_VERMAGIC_PREEMPT "preempt_rt "
#else
#define MODULE_VERMAGIC_PREEMPT ""
#endif

26
init/Kconfig
View File

@ -1234,20 +1234,26 @@ choice
default CC_OPTIMIZE_FOR_PERFORMANCE
config CC_OPTIMIZE_FOR_PERFORMANCE
bool "Optimize for performance"
bool "Optimize for performance (-O2)"
help
This is the default optimization level for the kernel, building
with the "-O2" compiler flag for best performance and most
helpful compile-time warnings.
config CC_OPTIMIZE_FOR_SIZE
bool "Optimize for size"
config CC_OPTIMIZE_FOR_PERFORMANCE_O3
bool "Optimize more for performance (-O3)"
depends on ARC
imply CC_DISABLE_WARN_MAYBE_UNINITIALIZED # avoid false positives
help
Enabling this option will pass "-Os" instead of "-O2" to
your compiler resulting in a smaller kernel.
Choosing this option will pass "-O3" to your compiler to optimize
the kernel yet more for performance.
If unsure, say N.
config CC_OPTIMIZE_FOR_SIZE
bool "Optimize for size (-Os)"
imply CC_DISABLE_WARN_MAYBE_UNINITIALIZED # avoid false positives
help
Choosing this option will pass "-Os" to your compiler resulting
in a smaller kernel.
endchoice
@ -2014,6 +2020,14 @@ config MODVERSIONS
make them incompatible with the kernel you are running. If
unsure, say N.
config ASM_MODVERSIONS
bool
default HAVE_ASM_MODVERSIONS && MODVERSIONS
help
This enables module versioning for exported symbols also from
assembly. This can be enabled only when the target architecture
supports it.
config MODULE_REL_CRCS
bool
depends on MODVERSIONS

5
init/Makefile
View File

@ -33,5 +33,6 @@ $(obj)/version.o: include/generated/compile.h
silent_chk_compile.h = :
include/generated/compile.h: FORCE
@$($(quiet)chk_compile.h)
$(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkcompile_h $@ \
"$(UTS_MACHINE)" "$(CONFIG_SMP)" "$(CONFIG_PREEMPT)" "$(CC) $(KBUILD_CFLAGS)"
$(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkcompile_h $@ \
"$(UTS_MACHINE)" "$(CONFIG_SMP)" "$(CONFIG_PREEMPT)" \
"$(CONFIG_PREEMPT_RT)" "$(CC) $(KBUILD_CFLAGS)"

2
kernel/Makefile
View File

@ -127,7 +127,7 @@ $(obj)/config_data.gz: $(KCONFIG_CONFIG) FORCE
$(obj)/kheaders.o: $(obj)/kheaders_data.tar.xz
quiet_cmd_genikh = CHK $(obj)/kheaders_data.tar.xz
cmd_genikh = $(CONFIG_SHELL) $(srctree)/kernel/gen_kheaders.sh $@
cmd_genikh = $(BASH) $(srctree)/kernel/gen_kheaders.sh $@
$(obj)/kheaders_data.tar.xz: FORCE
$(call cmd,genikh)

3
scripts/Kconfig.include
View File

@ -35,5 +35,8 @@ ld-option = $(success,$(LD) -v $(1))
$(error-if,$(failure,command -v $(CC)),compiler '$(CC)' not found)
$(error-if,$(failure,command -v $(LD)),linker '$(LD)' not found)
# Fail if the linker is gold as it's not capable of linking the kernel proper
$(error-if,$(success, $(LD) -v | grep -q gold), gold linker '$(LD)' not supported)
# gcc version including patch level
gcc-version := $(shell,$(srctree)/scripts/gcc-version.sh $(CC))

2
scripts/Makefile
View File

@ -36,4 +36,4 @@ subdir-$(CONFIG_MODVERSIONS) += genksyms
subdir-$(CONFIG_SECURITY_SELINUX) += selinux
# Let clean descend into subdirs
subdir- += basic dtc gdb kconfig mod package
subdir- += basic dtc gdb kconfig mod

73
scripts/Makefile.build
View File

@ -52,7 +52,7 @@ ifndef obj
$(warning kbuild: Makefile.build is included improperly)
endif
ifeq ($(MAKECMDGOALS)$(need-modorder),)
ifeq ($(need-modorder),)
ifneq ($(obj-m),)
$(warning $(patsubst %.o,'%.ko',$(obj-m)) will not be built even though obj-m is specified.)
$(warning You cannot use subdir-y/m to visit a module Makefile. Use obj-y/m instead.)
@ -76,11 +76,6 @@ endif
mod-targets := $(patsubst %.o, %.mod, $(obj-m))
__build: $(if $(KBUILD_BUILTIN),$(builtin-target) $(lib-target) $(extra-y)) \
$(if $(KBUILD_MODULES),$(obj-m) $(mod-targets) $(modorder-target)) \
$(subdir-ym) $(always)
@:
# Linus' kernel sanity checking tool
ifeq ($(KBUILD_CHECKSRC),1)
quiet_cmd_checksrc = CHECK $<
@ -90,23 +85,13 @@ else ifeq ($(KBUILD_CHECKSRC),2)
cmd_force_checksrc = $(CHECK) $(CHECKFLAGS) $(c_flags) $<
endif
ifneq ($(KBUILD_ENABLE_EXTRA_GCC_CHECKS),)
ifneq ($(KBUILD_EXTRA_WARN),)
cmd_checkdoc = $(srctree)/scripts/kernel-doc -none $<
endif
# Compile C sources (.c)
# ---------------------------------------------------------------------------
# Default is built-in, unless we know otherwise
$(foreach x, i ll lst o s symtypes, $(patsubst %.o,%.$(x),$(real-obj-m))): \
part-of-module := y
modkern_cflags = \
$(if $(part-of-module), \
$(KBUILD_CFLAGS_MODULE) $(CFLAGS_MODULE), \
$(KBUILD_CFLAGS_KERNEL) $(CFLAGS_KERNEL))
quiet_modtag = $(if $(part-of-module),[M], )
quiet_cmd_cc_s_c = CC $(quiet_modtag) $@
cmd_cc_s_c = $(CC) $(filter-out $(DEBUG_CFLAGS), $(c_flags)) $(DISABLE_LTO) -fverbose-asm -S -o $@ $<
@ -310,11 +295,6 @@ $(obj)/%.h.s: $(src)/%.h FORCE
# Compile assembler sources (.S)
# ---------------------------------------------------------------------------
modkern_aflags := $(KBUILD_AFLAGS_KERNEL) $(AFLAGS_KERNEL)
$(real-obj-m) : modkern_aflags := $(KBUILD_AFLAGS_MODULE) $(AFLAGS_MODULE)
$(real-obj-m:.o=.s): modkern_aflags := $(KBUILD_AFLAGS_MODULE) $(AFLAGS_MODULE)
# .S file exports must have their C prototypes defined in asm/asm-prototypes.h
# or a file that it includes, in order to get versioned symbols. We build a
# dummy C file that includes asm-prototypes and the EXPORT_SYMBOL lines from
@ -356,11 +336,7 @@ $(obj)/%.s: $(src)/%.S FORCE
quiet_cmd_as_o_S = AS $(quiet_modtag) $@
cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $<
ifdef CONFIG_MODVERSIONS
ASM_PROTOTYPES := $(wildcard $(srctree)/arch/$(SRCARCH)/include/asm/asm-prototypes.h)
ifneq ($(ASM_PROTOTYPES),)
ifdef CONFIG_ASM_MODVERSIONS
# versioning matches the C process described above, with difference that
# we parse asm-prototypes.h C header to get function definitions.
@ -376,7 +352,6 @@ cmd_modversions_S = \
rm -f $(@D)/.tmp_$(@F:.o=.ver); \
fi
endif
endif
$(obj)/%.o: $(src)/%.S $(objtool_dep) FORCE
$(call if_changed_rule,as_o_S)
@ -395,9 +370,9 @@ $(obj)/%.lds: $(src)/%.lds.S FORCE
# ASN.1 grammar
# ---------------------------------------------------------------------------
quiet_cmd_asn1_compiler = ASN.1 $@
quiet_cmd_asn1_compiler = ASN.1 $(basename $@).[ch]
cmd_asn1_compiler = $(objtree)/scripts/asn1_compiler $< \
$(subst .h,.c,$@) $(subst .c,.h,$@)
$(basename $@).c $(basename $@).h
$(obj)/%.asn1.c $(obj)/%.asn1.h: $(src)/%.asn1 $(objtree)/scripts/asn1_compiler
$(call cmd,asn1_compiler)
@ -489,12 +464,50 @@ targets += $(call intermediate_targets, .asn1.o, .asn1.c .asn1.h) \
$(call intermediate_targets, .lex.o, .lex.c) \
$(call intermediate_targets, .tab.o, .tab.c .tab.h)
# Build
# ---------------------------------------------------------------------------
ifdef single-build
curdir-single := $(sort $(foreach x, $(KBUILD_SINGLE_TARGETS), \
$(if $(filter $(x) $(basename $(x)).o, $(targets)), $(x))))
# Handle single targets without any rule: show "Nothing to be done for ..." or
# "No rule to make target ..." depending on whether the target exists.
unknown-single := $(filter-out $(addsuffix /%, $(subdir-ym)), \
$(filter $(obj)/%, \
$(filter-out $(curdir-single), \
$(KBUILD_SINGLE_TARGETS))))
__build: $(curdir-single) $(subdir-ym)
ifneq ($(unknown-single),)
$(Q)$(MAKE) -f /dev/null $(unknown-single)
endif
@:
ifeq ($(curdir-single),)
# Nothing to do in this directory. Do not include any .*.cmd file for speed-up
targets :=
else
targets += $(curdir-single)
endif
else
__build: $(if $(KBUILD_BUILTIN),$(builtin-target) $(lib-target) $(extra-y)) \
$(if $(KBUILD_MODULES),$(obj-m) $(mod-targets) $(modorder-target)) \
$(subdir-ym) $(always)
@:
endif
# Descending
# ---------------------------------------------------------------------------
PHONY += $(subdir-ym)
$(subdir-ym):
$(Q)$(MAKE) $(build)=$@ \
$(if $(filter $@/, $(KBUILD_SINGLE_TARGETS)),single-build=) \
need-builtin=$(if $(filter $@/built-in.a, $(subdir-obj-y)),1) \
need-modorder=$(if $(need-modorder),$(if $(filter $@/modules.order, $(modorder)),1))

31
scripts/Makefile.clean
View File

@ -17,17 +17,8 @@ include $(if $(wildcard $(kbuild-dir)/Kbuild), $(kbuild-dir)/Kbuild, $(kbuild-di
# Figure out what we need to build from the various variables
# ==========================================================================
__subdir-y := $(patsubst %/,%,$(filter %/, $(obj-y)))
subdir-y += $(__subdir-y)
__subdir-m := $(patsubst %/,%,$(filter %/, $(obj-m)))
subdir-m += $(__subdir-m)
__subdir- := $(patsubst %/,%,$(filter %/, $(obj-)))
subdir- += $(__subdir-)
# Subdirectories we need to descend into
subdir-ym := $(sort $(subdir-y) $(subdir-m))
subdir-ymn := $(sort $(subdir-ym) $(subdir-))
subdir-ymn := $(sort $(subdir-y) $(subdir-m) $(subdir-) \
$(patsubst %/,%, $(filter %/, $(obj-y) $(obj-m) $(obj-))))
# Add subdir path
@ -52,26 +43,14 @@ __clean-files := $(wildcard \
$(addprefix $(obj)/, $(filter-out $(objtree)/%, $(__clean-files))) \
$(filter $(objtree)/%, $(__clean-files)))
# same as clean-files
__clean-dirs := $(wildcard \
$(addprefix $(obj)/, $(filter-out $(objtree)/%, $(clean-dirs))) \
$(filter $(objtree)/%, $(clean-dirs)))
# ==========================================================================
quiet_cmd_clean = CLEAN $(obj)
cmd_clean = rm -f $(__clean-files)
quiet_cmd_cleandir = CLEAN $(__clean-dirs)
cmd_cleandir = rm -rf $(__clean-dirs)
quiet_cmd_clean = CLEAN $(obj)
cmd_clean = rm -rf $(__clean-files)
__clean: $(subdir-ymn)
ifneq ($(strip $(__clean-files)),)
+$(call cmd,clean)
endif
ifneq ($(strip $(__clean-dirs)),)
+$(call cmd,cleandir)
$(call cmd,clean)
endif
@:

117
scripts/Makefile.extrawarn
View File

@ -1,74 +1,91 @@
# SPDX-License-Identifier: GPL-2.0
# ==========================================================================
#
# make W=... settings
#
# W=1 - warnings that may be relevant and does not occur too often
# W=2 - warnings that occur quite often but may still be relevant
# W=3 - the more obscure warnings, can most likely be ignored
#
# $(call cc-option, -W...) handles gcc -W.. options which
# are not supported by all versions of the compiler
# There are three warning groups enabled by W=1, W=2, W=3.
# They are independent, and can be combined like W=12 or W=123.
# ==========================================================================
KBUILD_CFLAGS += $(call cc-disable-warning, packed-not-aligned)
# backward compatibility
KBUILD_EXTRA_WARN ?= $(KBUILD_ENABLE_EXTRA_GCC_CHECKS)
ifeq ("$(origin W)", "command line")
export KBUILD_ENABLE_EXTRA_GCC_CHECKS := $(W)
KBUILD_EXTRA_WARN := $(W)
endif
ifdef KBUILD_ENABLE_EXTRA_GCC_CHECKS
warning- := $(empty)
export KBUILD_EXTRA_WARN
warning-1 := -Wextra -Wunused -Wno-unused-parameter
warning-1 += -Wmissing-declarations
warning-1 += -Wmissing-format-attribute
warning-1 += -Wmissing-prototypes
warning-1 += -Wold-style-definition
warning-1 += -Wmissing-include-dirs
warning-1 += $(call cc-option, -Wunused-but-set-variable)
warning-1 += $(call cc-option, -Wunused-const-variable)
warning-1 += $(call cc-option, -Wpacked-not-aligned)
warning-1 += $(call cc-option, -Wstringop-truncation)
#
# W=1 - warnings which may be relevant and do not occur too often
#
ifneq ($(findstring 1, $(KBUILD_EXTRA_WARN)),)
KBUILD_CFLAGS += -Wextra -Wunused -Wno-unused-parameter
KBUILD_CFLAGS += -Wmissing-declarations
KBUILD_CFLAGS += -Wmissing-format-attribute
KBUILD_CFLAGS += -Wmissing-prototypes
KBUILD_CFLAGS += -Wold-style-definition
KBUILD_CFLAGS += -Wmissing-include-dirs
KBUILD_CFLAGS += $(call cc-option, -Wunused-but-set-variable)
KBUILD_CFLAGS += $(call cc-option, -Wunused-const-variable)
KBUILD_CFLAGS += $(call cc-option, -Wpacked-not-aligned)
KBUILD_CFLAGS += $(call cc-option, -Wstringop-truncation)
# The following turn off the warnings enabled by -Wextra
warning-1 += -Wno-missing-field-initializers
warning-1 += -Wno-sign-compare
KBUILD_CFLAGS += -Wno-missing-field-initializers
KBUILD_CFLAGS += -Wno-sign-compare
warning-2 += -Wcast-align
warning-2 += -Wdisabled-optimization
warning-2 += -Wnested-externs
warning-2 += -Wshadow
warning-2 += $(call cc-option, -Wlogical-op)
warning-2 += -Wmissing-field-initializers
warning-2 += -Wsign-compare
warning-2 += $(call cc-option, -Wmaybe-uninitialized)
warning-2 += $(call cc-option, -Wunused-macros)
KBUILD_CPPFLAGS += -DKBUILD_EXTRA_WARN1
warning-3 := -Wbad-function-cast
warning-3 += -Wcast-qual
warning-3 += -Wconversion
warning-3 += -Wpacked
warning-3 += -Wpadded
warning-3 += -Wpointer-arith
warning-3 += -Wredundant-decls
warning-3 += -Wswitch-default
warning-3 += $(call cc-option, -Wpacked-bitfield-compat)
warning := $(warning-$(findstring 1, $(KBUILD_ENABLE_EXTRA_GCC_CHECKS)))
warning += $(warning-$(findstring 2, $(KBUILD_ENABLE_EXTRA_GCC_CHECKS)))
warning += $(warning-$(findstring 3, $(KBUILD_ENABLE_EXTRA_GCC_CHECKS)))
ifeq ("$(strip $(warning))","")
$(error W=$(KBUILD_ENABLE_EXTRA_GCC_CHECKS) is unknown)
endif
KBUILD_CFLAGS += $(warning)
else
# Some diagnostics enabled by default are noisy.
# Suppress them by using -Wno... except for W=1.
ifdef CONFIG_CC_IS_CLANG
KBUILD_CFLAGS += -Wno-initializer-overrides
KBUILD_CFLAGS += -Wno-format
KBUILD_CFLAGS += -Wno-sign-compare
KBUILD_CFLAGS += -Wno-format-zero-length
endif
endif
#
# W=2 - warnings which occur quite often but may still be relevant
#
ifneq ($(findstring 2, $(KBUILD_EXTRA_WARN)),)
KBUILD_CFLAGS += -Wcast-align
KBUILD_CFLAGS += -Wdisabled-optimization
KBUILD_CFLAGS += -Wnested-externs
KBUILD_CFLAGS += -Wshadow
KBUILD_CFLAGS += $(call cc-option, -Wlogical-op)
KBUILD_CFLAGS += -Wmissing-field-initializers
KBUILD_CFLAGS += -Wsign-compare
KBUILD_CFLAGS += $(call cc-option, -Wmaybe-uninitialized)
KBUILD_CFLAGS += $(call cc-option, -Wunused-macros)
KBUILD_CPPFLAGS += -DKBUILD_EXTRA_WARN2
endif
#
# W=3 - more obscure warnings, can most likely be ignored
#
ifneq ($(findstring 3, $(KBUILD_EXTRA_WARN)),)
KBUILD_CFLAGS += -Wbad-function-cast
KBUILD_CFLAGS += -Wcast-qual
KBUILD_CFLAGS += -Wconversion
KBUILD_CFLAGS += -Wpacked
KBUILD_CFLAGS += -Wpadded
KBUILD_CFLAGS += -Wpointer-arith
KBUILD_CFLAGS += -Wredundant-decls
KBUILD_CFLAGS += -Wswitch-default
KBUILD_CFLAGS += $(call cc-option, -Wpacked-bitfield-compat)
KBUILD_CPPFLAGS += -DKBUILD_EXTRA_WARN3
endif

39
scripts/Makefile.host
View File

@ -1,4 +1,21 @@
# SPDX-License-Identifier: GPL-2.0
# LEX
# ---------------------------------------------------------------------------
quiet_cmd_flex = LEX $@
cmd_flex = $(LEX) -o$@ -L $<
$(obj)/%.lex.c: $(src)/%.l FORCE
$(call if_changed,flex)
# YACC
# ---------------------------------------------------------------------------
quiet_cmd_bison = YACC $(basename $@).[ch]
cmd_bison = $(YACC) -o $(basename $@).c --defines=$(basename $@).h -t -l $<
$(obj)/%.tab.c $(obj)/%.tab.h: $(src)/%.y FORCE
$(call if_changed,bison)
# ==========================================================================
# Building binaries on the host system
# Binaries are used during the compilation of the kernel, for example
@ -63,9 +80,9 @@ host-cxxshobjs := $(addprefix $(obj)/,$(host-cxxshobjs))
# Handle options to gcc. Support building with separate output directory
_hostc_flags = $(KBUILD_HOSTCFLAGS) $(HOST_EXTRACFLAGS) \
$(HOSTCFLAGS_$(basetarget).o)
$(HOSTCFLAGS_$(target-stem).o)
_hostcxx_flags = $(KBUILD_HOSTCXXFLAGS) $(HOST_EXTRACXXFLAGS) \
$(HOSTCXXFLAGS_$(basetarget).o)
$(HOSTCXXFLAGS_$(target-stem).o)
# $(objtree)/$(obj) for including generated headers from checkin source files
ifeq ($(KBUILD_EXTMOD),)
@ -85,7 +102,7 @@ hostcxx_flags = -Wp,-MD,$(depfile) $(_hostcxx_flags)
# host-csingle -> Executable
quiet_cmd_host-csingle = HOSTCC $@
cmd_host-csingle = $(HOSTCC) $(hostc_flags) $(KBUILD_HOSTLDFLAGS) -o $@ $< \
$(KBUILD_HOSTLDLIBS) $(HOSTLDLIBS_$(@F))
$(KBUILD_HOSTLDLIBS) $(HOSTLDLIBS_$(target-stem))
$(host-csingle): $(obj)/%: $(src)/%.c FORCE
$(call if_changed_dep,host-csingle)
@ -93,8 +110,8 @@ $(host-csingle): $(obj)/%: $(src)/%.c FORCE
# host-cmulti -> executable
quiet_cmd_host-cmulti = HOSTLD $@
cmd_host-cmulti = $(HOSTCC) $(KBUILD_HOSTLDFLAGS) -o $@ \
$(addprefix $(obj)/,$($(@F)-objs)) \
$(KBUILD_HOSTLDLIBS) $(HOSTLDLIBS_$(@F))
$(addprefix $(obj)/, $($(target-stem)-objs)) \
$(KBUILD_HOSTLDLIBS) $(HOSTLDLIBS_$(target-stem))
$(host-cmulti): FORCE
$(call if_changed,host-cmulti)
$(call multi_depend, $(host-cmulti), , -objs)
@ -111,8 +128,8 @@ $(host-cobjs): $(obj)/%.o: $(src)/%.c FORCE
quiet_cmd_host-cxxmulti = HOSTLD $@
cmd_host-cxxmulti = $(HOSTCXX) $(KBUILD_HOSTLDFLAGS) -o $@ \
$(foreach o,objs cxxobjs,\
$(addprefix $(obj)/,$($(@F)-$(o)))) \
$(KBUILD_HOSTLDLIBS) $(HOSTLDLIBS_$(@F))
$(addprefix $(obj)/, $($(target-stem)-$(o)))) \
$(KBUILD_HOSTLDLIBS) $(HOSTLDLIBS_$(target-stem))
$(host-cxxmulti): FORCE
$(call if_changed,host-cxxmulti)
$(call multi_depend, $(host-cxxmulti), , -objs -cxxobjs)
@ -144,8 +161,8 @@ $(host-cxxshobjs): $(obj)/%.o: $(src)/%.c FORCE
# *.o -> .so shared library (host-cshlib)
quiet_cmd_host-cshlib = HOSTLLD -shared $@
cmd_host-cshlib = $(HOSTCC) $(KBUILD_HOSTLDFLAGS) -shared -o $@ \
$(addprefix $(obj)/,$($(@F:.so=-objs))) \
$(KBUILD_HOSTLDLIBS) $(HOSTLDLIBS_$(@F))
$(addprefix $(obj)/, $($(target-stem)-objs)) \
$(KBUILD_HOSTLDLIBS) $(HOSTLDLIBS_$(target-stem).so)
$(host-cshlib): FORCE
$(call if_changed,host-cshlib)
$(call multi_depend, $(host-cshlib), .so, -objs)
@ -154,8 +171,8 @@ $(call multi_depend, $(host-cshlib), .so, -objs)
# *.o -> .so shared library (host-cxxshlib)
quiet_cmd_host-cxxshlib = HOSTLLD -shared $@
cmd_host-cxxshlib = $(HOSTCXX) $(KBUILD_HOSTLDFLAGS) -shared -o $@ \
$(addprefix $(obj)/,$($(@F:.so=-objs))) \
$(KBUILD_HOSTLDLIBS) $(HOSTLDLIBS_$(@F))
$(addprefix $(obj)/, $($(target-stem)-objs)) \
$(KBUILD_HOSTLDLIBS) $(HOSTLDLIBS_$(target-stem).so)
$(host-cxxshlib): FORCE
$(call if_changed,host-cxxshlib)
$(call multi_depend, $(host-cxxshlib), .so, -objs)

63
scripts/Makefile.lib
View File

@ -41,9 +41,9 @@ obj-m := $(filter-out %/, $(obj-m))
# Subdirectories we need to descend into
subdir-ym := $(sort $(subdir-y) $(subdir-m))
# if $(foo-objs), $(foo-y), or $(foo-m) exists, foo.o is a composite object
multi-used-y := $(sort $(foreach m,$(obj-y), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))), $(m))))
multi-used-m := $(sort $(foreach m,$(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m))), $(m))))
# If $(foo-objs), $(foo-y), $(foo-m), or $(foo-) exists, foo.o is a composite object
multi-used-y := $(sort $(foreach m,$(obj-y), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-))), $(m))))
multi-used-m := $(sort $(foreach m,$(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m)) $($(m:.o=-))), $(m))))
multi-used := $(multi-used-y) $(multi-used-m)
# $(subdir-obj-y) is the list of objects in $(obj-y) which uses dir/ to
@ -52,8 +52,8 @@ subdir-obj-y := $(filter %/built-in.a, $(obj-y))
# Replace multi-part objects by their individual parts,
# including built-in.a from subdirectories
real-obj-y := $(foreach m, $(obj-y), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))),$($(m:.o=-objs)) $($(m:.o=-y)),$(m)))
real-obj-m := $(foreach m, $(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m))),$($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m)),$(m)))
real-obj-y := $(foreach m, $(obj-y), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-))),$($(m:.o=-objs)) $($(m:.o=-y)),$(m)))
real-obj-m := $(foreach m, $(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m)) $($(m:.o=-))),$($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m)),$(m)))
# DTB
# If CONFIG_OF_ALL_DTBS is enabled, all DT blobs are built
@ -101,6 +101,9 @@ modname-multi = $(subst $(space),:,$(sort $(foreach m,$(multi-used),\
modname = $(if $(modname-multi),$(modname-multi),$(basetarget))
# target with $(obj)/ and its suffix stripped
target-stem = $(basename $(patsubst $(obj)/%,%,$@))
# These flags are needed for modversions and compiling, so we define them here
# $(modname_flags) defines KBUILD_MODNAME as the name of the module it will
# end up in (or would, if it gets compiled in)
@ -109,12 +112,12 @@ basename_flags = -DKBUILD_BASENAME=$(call name-fix,$(basetarget))
modname_flags = -DKBUILD_MODNAME=$(call name-fix,$(modname))
orig_c_flags = $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) \
$(ccflags-y) $(CFLAGS_$(basetarget).o)
_c_flags = $(filter-out $(CFLAGS_REMOVE_$(basetarget).o), $(orig_c_flags))
$(ccflags-y) $(CFLAGS_$(target-stem).o)
_c_flags = $(filter-out $(CFLAGS_REMOVE_$(target-stem).o), $(orig_c_flags))
orig_a_flags = $(KBUILD_CPPFLAGS) $(KBUILD_AFLAGS) \
$(asflags-y) $(AFLAGS_$(basetarget).o)
_a_flags = $(filter-out $(AFLAGS_REMOVE_$(basetarget).o), $(orig_a_flags))
_cpp_flags = $(KBUILD_CPPFLAGS) $(cppflags-y) $(CPPFLAGS_$(@F))
$(asflags-y) $(AFLAGS_$(target-stem).o)
_a_flags = $(filter-out $(AFLAGS_REMOVE_$(target-stem).o), $(orig_a_flags))
_cpp_flags = $(KBUILD_CPPFLAGS) $(cppflags-y) $(CPPFLAGS_$(target-stem).lds)
#
# Enable gcov profiling flags for a file, directory or for all files depending
@ -159,6 +162,18 @@ _cpp_flags += -I $(srctree)/$(src) -I $(objtree)/$(obj)
endif
endif
part-of-module = $(if $(filter $(basename $@).o, $(real-obj-m)),y)
quiet_modtag = $(if $(part-of-module),[M], )
modkern_cflags = \
$(if $(part-of-module), \
$(KBUILD_CFLAGS_MODULE) $(CFLAGS_MODULE), \
$(KBUILD_CFLAGS_KERNEL) $(CFLAGS_KERNEL))
modkern_aflags = $(if $(part-of-module), \
$(KBUILD_AFLAGS_MODULE) $(AFLAGS_MODULE), \
$(KBUILD_AFLAGS_KERNEL) $(AFLAGS_KERNEL))
c_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \
-include $(srctree)/include/linux/compiler_types.h \
$(_c_flags) $(modkern_cflags) \
@ -187,28 +202,6 @@ $(foreach m, $(notdir $1), \
$(addprefix $(obj)/, $(foreach s, $3, $($(m:%$(strip $2)=%$(s)))))))
endef
# LEX
# ---------------------------------------------------------------------------
quiet_cmd_flex = LEX $@
cmd_flex = $(LEX) -o$@ -L $<
$(obj)/%.lex.c: $(src)/%.l FORCE
$(call if_changed,flex)
# YACC
# ---------------------------------------------------------------------------
quiet_cmd_bison = YACC $@
cmd_bison = $(YACC) -o$@ -t -l $<
$(obj)/%.tab.c: $(src)/%.y FORCE
$(call if_changed,bison)
quiet_cmd_bison_h = YACC $@
cmd_bison_h = $(YACC) -o/dev/null --defines=$@ -t -l $<
$(obj)/%.tab.h: $(src)/%.y FORCE
$(call if_changed,bison_h)
# Shipped files
# ===========================================================================
@ -258,7 +251,7 @@ quiet_cmd_gzip = GZIP $@
DTC ?= $(objtree)/scripts/dtc/dtc
# Disable noisy checks by default
ifeq ($(findstring 1,$(KBUILD_ENABLE_EXTRA_GCC_CHECKS)),)
ifeq ($(findstring 1,$(KBUILD_EXTRA_WARN)),)
DTC_FLAGS += -Wno-unit_address_vs_reg \
-Wno-unit_address_format \
-Wno-avoid_unnecessary_addr_size \
@ -269,7 +262,7 @@ DTC_FLAGS += -Wno-unit_address_vs_reg \
-Wno-pci_device_reg
endif
ifneq ($(findstring 2,$(KBUILD_ENABLE_EXTRA_GCC_CHECKS)),)
ifneq ($(findstring 2,$(KBUILD_EXTRA_WARN)),)
DTC_FLAGS += -Wnode_name_chars_strict \
-Wproperty_name_chars_strict
endif
@ -374,7 +367,7 @@ UIMAGE_ENTRYADDR ?= $(UIMAGE_LOADADDR)
UIMAGE_NAME ?= 'Linux-$(KERNELRELEASE)'
quiet_cmd_uimage = UIMAGE $@
cmd_uimage = $(CONFIG_SHELL) $(MKIMAGE) -A $(UIMAGE_ARCH) -O linux \
cmd_uimage = $(BASH) $(MKIMAGE) -A $(UIMAGE_ARCH) -O linux \
-C $(UIMAGE_COMPRESSION) $(UIMAGE_OPTS-y) \
-T $(UIMAGE_TYPE) \
-a $(UIMAGE_LOADADDR) -e $(UIMAGE_ENTRYADDR) \

60
scripts/Makefile.modfinal Normal file
View File

@ -0,0 +1,60 @@
# SPDX-License-Identifier: GPL-2.0-only
# ===========================================================================
# Module final link
# ===========================================================================
PHONY := __modfinal
__modfinal:
include $(srctree)/scripts/Kbuild.include
# for c_flags
include $(srctree)/scripts/Makefile.lib
# find all modules listed in modules.order
modules := $(sort $(shell cat $(MODORDER)))
__modfinal: $(modules)
@:
# modname and part-of-module are set to make c_flags define proper module flags
modname = $(notdir $(@:.mod.o=))
part-of-module = y
quiet_cmd_cc_o_c = CC [M] $@
cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $<
%.mod.o: %.mod.c FORCE
$(call if_changed_dep,cc_o_c)
ARCH_POSTLINK := $(wildcard $(srctree)/arch/$(SRCARCH)/Makefile.postlink)
quiet_cmd_ld_ko_o = LD [M] $@
cmd_ld_ko_o = \
$(LD) -r $(KBUILD_LDFLAGS) \
$(KBUILD_LDFLAGS_MODULE) $(LDFLAGS_MODULE) \
$(addprefix -T , $(KBUILD_LDS_MODULE)) \
-o $@ $(filter %.o, $^); \
$(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true)
$(modules): %.ko: %.o %.mod.o $(KBUILD_LDS_MODULE) FORCE
+$(call if_changed,ld_ko_o)
targets += $(modules) $(modules:.ko=.mod.o)
# Add FORCE to the prequisites of a target to force it to be always rebuilt.
# ---------------------------------------------------------------------------
PHONY += FORCE
FORCE:
# Read all saved command lines and dependencies for the $(targets) we
# may be building above, using $(if_changed{,_dep}). As an
# optimization, we don't need to read them if the target does not
# exist, we will rebuild anyway in that case.
existing-targets := $(wildcard $(sort $(targets)))
-include $(foreach f,$(existing-targets),$(dir $(f)).$(notdir $(f)).cmd)
.PHONY: $(PHONY)

80
scripts/Makefile.modpost
View File

@ -15,15 +15,13 @@
# 2) modpost is then used to
# 3) create one <module>.mod.c file pr. module
# 4) create one Module.symvers file with CRC for all exported symbols
# 5) compile all <module>.mod.c files
# 6) final link of the module to a <module.ko> file
# Step 3 is used to place certain information in the module's ELF
# section, including information such as:
# Version magic (see include/linux/vermagic.h for full details)
# - Kernel release
# - SMP is CONFIG_SMP
# - PREEMPT is CONFIG_PREEMPT
# - PREEMPT is CONFIG_PREEMPT[_RT]
# - GCC Version
# Module info
# - Module version (MODULE_VERSION)
@ -60,13 +58,10 @@ MODPOST = scripts/mod/modpost \
ifdef MODPOST_VMLINUX
__modpost: vmlinux.o
quiet_cmd_modpost = MODPOST vmlinux.o
cmd_modpost = $(MODPOST) vmlinux.o
quiet_cmd_modpost = MODPOST $@
cmd_modpost = $(MODPOST) $@
PHONY += vmlinux.o
vmlinux.o:
__modpost:
$(call cmd,modpost)
else
@ -83,73 +78,22 @@ include $(if $(wildcard $(KBUILD_EXTMOD)/Kbuild), \
$(KBUILD_EXTMOD)/Kbuild, $(KBUILD_EXTMOD)/Makefile)
endif
include scripts/Makefile.lib
MODPOST += $(subst -i,-n,$(filter -i,$(MAKEFLAGS))) -s -T - $(wildcard vmlinux)
# find all modules listed in modules.order
modules := $(sort $(shell cat $(MODORDER)))
# Stop after building .o files if NOFINAL is set. Makes compile tests quicker
__modpost: $(if $(KBUILD_MODPOST_NOFINAL), $(modules:.ko:.o),$(modules))
@:
MODPOST += $(subst -i,-n,$(filter -i,$(MAKEFLAGS))) -s -T - $(wildcard vmlinux)
# We can go over command line length here, so be careful.
# Read out modules.order instead of expanding $(modules) to pass in modpost.
# Otherwise, allmodconfig would fail with "Argument list too long".
quiet_cmd_modpost = MODPOST $(words $(modules)) modules
cmd_modpost = sed 's/ko$$/o/' $(MODORDER) | $(MODPOST)
PHONY += modules-modpost
modules-modpost:
__modpost:
@$(kecho) ' Building modules, stage 2.'
$(call cmd,modpost)
# Declare generated files as targets for modpost
$(modules:.ko=.mod.c): modules-modpost
# Step 5), compile all *.mod.c files
# modname is set to make c_flags define KBUILD_MODNAME
modname = $(notdir $(@:.mod.o=))
quiet_cmd_cc_o_c = CC $@
cmd_cc_o_c = $(CC) $(c_flags) $(KBUILD_CFLAGS_MODULE) $(CFLAGS_MODULE) \
-c -o $@ $<
$(modules:.ko=.mod.o): %.mod.o: %.mod.c FORCE
$(call if_changed_dep,cc_o_c)
targets += $(modules:.ko=.mod.o)
ARCH_POSTLINK := $(wildcard $(srctree)/arch/$(SRCARCH)/Makefile.postlink)
# Step 6), final link of the modules with optional arch pass after final link
quiet_cmd_ld_ko_o = LD [M] $@
cmd_ld_ko_o = \
$(LD) -r $(KBUILD_LDFLAGS) \
$(KBUILD_LDFLAGS_MODULE) $(LDFLAGS_MODULE) \
-o $@ $(real-prereqs) ; \
$(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true)
$(modules): %.ko :%.o %.mod.o FORCE
+$(call if_changed,ld_ko_o)
targets += $(modules)
# Add FORCE to the prequisites of a target to force it to be always rebuilt.
# ---------------------------------------------------------------------------
PHONY += FORCE
FORCE:
# Read all saved command lines and dependencies for the $(targets) we
# may be building above, using $(if_changed{,_dep}). As an
# optimization, we don't need to read them if the target does not
# exist, we will rebuild anyway in that case.
existing-targets := $(wildcard $(sort $(targets)))
-include $(foreach f,$(existing-targets),$(dir $(f)).$(notdir $(f)).cmd)
ifneq ($(KBUILD_MODPOST_NOFINAL),1)
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modfinal
endif
endif

43
scripts/package/Makefile → scripts/Makefile.package
View File

@ -1,6 +1,7 @@
# SPDX-License-Identifier: GPL-2.0-only
# Makefile for the different targets used to generate full packages of a kernel
# It uses the generic clean infrastructure of kbuild
include $(srctree)/scripts/Kbuild.include
# RPM target
# ---------------------------------------------------------------------------
@ -50,7 +51,8 @@ rm -f $(objtree)/.scmversion
# rpm-pkg
# ---------------------------------------------------------------------------
rpm-pkg: FORCE
PHONY += rpm-pkg
rpm-pkg:
$(MAKE) clean
$(CONFIG_SHELL) $(MKSPEC) >$(objtree)/kernel.spec
$(call cmd,src_tar,$(KERNELPATH),kernel.spec)
@ -59,15 +61,15 @@ rpm-pkg: FORCE
# binrpm-pkg
# ---------------------------------------------------------------------------
binrpm-pkg: FORCE
PHONY += binrpm-pkg
binrpm-pkg:
$(MAKE) -f $(srctree)/Makefile
$(CONFIG_SHELL) $(MKSPEC) prebuilt > $(objtree)/binkernel.spec
+rpmbuild $(RPMOPTS) --define "_builddir $(objtree)" --target \
$(UTS_MACHINE) -bb $(objtree)/binkernel.spec
clean-files += $(objtree)/*.spec
deb-pkg: FORCE
PHONY += deb-pkg
deb-pkg:
$(MAKE) clean
$(CONFIG_SHELL) $(srctree)/scripts/package/mkdebian
$(call cmd,src_tar,$(KDEB_SOURCENAME))
@ -75,18 +77,19 @@ deb-pkg: FORCE
mv $(KDEB_SOURCENAME).tar.gz ../$(KDEB_SOURCENAME)_$${origversion}.orig.tar.gz
+dpkg-buildpackage -r$(KBUILD_PKG_ROOTCMD) -a$$(cat debian/arch) $(DPKG_FLAGS) -i.git -us -uc
bindeb-pkg: FORCE
PHONY += bindeb-pkg
bindeb-pkg:
$(CONFIG_SHELL) $(srctree)/scripts/package/mkdebian
+dpkg-buildpackage -r$(KBUILD_PKG_ROOTCMD) -a$$(cat debian/arch) $(DPKG_FLAGS) -b -nc -uc
intdeb-pkg: FORCE
PHONY += intdeb-pkg
intdeb-pkg:
+$(CONFIG_SHELL) $(srctree)/scripts/package/builddeb
clean-dirs += $(objtree)/debian/
# snap-pkg
# ---------------------------------------------------------------------------
snap-pkg: FORCE
PHONY += snap-pkg
snap-pkg:
rm -rf $(objtree)/snap
mkdir $(objtree)/snap
$(MAKE) clean
@ -98,17 +101,14 @@ snap-pkg: FORCE
cd $(objtree)/snap && \
snapcraft --target-arch=$(UTS_MACHINE)
clean-dirs += $(objtree)/snap/
# tarball targets
# ---------------------------------------------------------------------------
tar%pkg: FORCE
tar-pkgs := tar-pkg targz-pkg tarbz2-pkg tarxz-pkg
PHONY += $(tar-pkgs)
$(tar-pkgs):
$(MAKE) -f $(srctree)/Makefile
+$(CONFIG_SHELL) $(srctree)/scripts/package/buildtar $@
clean-dirs += $(objtree)/tar-install/
# perf-pkg - generate a source tarball with perf source
# ---------------------------------------------------------------------------
@ -133,12 +133,15 @@ $(if $(findstring xz,$@),xz, \
$(error unknown target $@)))) \
-f -9 $(perf-tar).tar)
perf-%pkg: FORCE
perf-tar-pkgs := perf-tar-src-pkg perf-targz-src-pkg perf-tarbz2-src-pkg perf-tarxz-src-pkg
PHONY += $(perf-tar-pkgs)
$(perf-tar-pkgs):
$(call cmd,perf_tar)
# Help text displayed when executing 'make help'
# ---------------------------------------------------------------------------
help: FORCE
PHONY += help
help:
@echo ' rpm-pkg - Build both source and binary RPM kernel packages'
@echo ' binrpm-pkg - Build only the binary kernel RPM package'
@echo ' deb-pkg - Build both source and binary deb kernel packages'
@ -152,3 +155,5 @@ help: FORCE
@echo ' perf-targz-src-pkg - Build $(perf-tar).tar.gz source tarball'
@echo ' perf-tarbz2-src-pkg - Build $(perf-tar).tar.bz2 source tarball'
@echo ' perf-tarxz-src-pkg - Build $(perf-tar).tar.xz source tarball'
.PHONY: $(PHONY)

14
scripts/basic/Makefile
View File

@ -1,16 +1,6 @@
# SPDX-License-Identifier: GPL-2.0-only
###
# This Makefile lists the most basic programs used during the build process.
# The programs listed herein are what are needed to do the basic stuff,
# such as fix file dependencies.
# This initial step is needed to avoid files to be recompiled
# when kernel configuration changes (which is what happens when
# .config is included by main Makefile.
# ---------------------------------------------------------------------------
# fixdep: Used to generate dependency information during build process
#
# fixdep: used to generate dependency information during build process
hostprogs-y := fixdep
always := $(hostprogs-y)
# fixdep is needed to compile other host programs
$(addprefix $(obj)/,$(filter-out fixdep,$(always))): $(obj)/fixdep

11
scripts/genksyms/Makefile
View File

@ -12,22 +12,15 @@ genksyms-objs := genksyms.o parse.tab.o lex.lex.o
#
# Just in case, run "$(YACC) --version" without suppressing stderr
# so that 'bison: not found' will be displayed if it is missing.
ifeq ($(findstring 1,$(KBUILD_ENABLE_EXTRA_GCC_CHECKS)),)
ifeq ($(findstring 1,$(KBUILD_EXTRA_WARN)),)
quiet_cmd_bison_no_warn = $(quiet_cmd_bison)
cmd_bison_no_warn = $(YACC) --version >/dev/null; \
$(cmd_bison) 2>/dev/null
$(obj)/parse.tab.c: $(src)/parse.y FORCE
$(obj)/pars%.tab.c $(obj)/pars%.tab.h: $(src)/pars%.y FORCE
$(call if_changed,bison_no_warn)
quiet_cmd_bison_h_no_warn = $(quiet_cmd_bison_h)
cmd_bison_h_no_warn = $(YACC) --version >/dev/null; \
$(cmd_bison_h) 2>/dev/null
$(obj)/parse.tab.h: $(src)/parse.y FORCE
$(call if_changed,bison_h_no_warn)
endif
# -I needed for generated C source (shipped source)

6
scripts/genksyms/keywords.c
View File

@ -3,11 +3,7 @@ static struct resword {
const char *name;
int token;
} keywords[] = {
{ "EXPORT_SYMBOL", EXPORT_SYMBOL_KEYW },
{ "EXPORT_SYMBOL_GPL", EXPORT_SYMBOL_KEYW },
{ "EXPORT_SYMBOL_GPL_FUTURE", EXPORT_SYMBOL_KEYW },
{ "EXPORT_UNUSED_SYMBOL", EXPORT_SYMBOL_KEYW },
{ "EXPORT_UNUSED_SYMBOL_GPL", EXPORT_SYMBOL_KEYW },
{ "__GENKSYMS_EXPORT_SYMBOL", EXPORT_SYMBOL_KEYW },
{ "__asm", ASM_KEYW },
{ "__asm__", ASM_KEYW },
{ "__attribute", ATTRIBUTE_KEYW },

32
scripts/genksyms/lex.l
View File

@ -1,25 +1,13 @@
/* Lexical analysis for genksyms.
Copyright 1996, 1997 Linux International.
New implementation contributed by Richard Henderson <rth@tamu.edu>
Based on original work by Bjorn Ekwall <bj0rn@blox.se>
Taken from Linux modutils 2.4.22.
This program is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2 of the License, or (at your
option) any later version.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software Foundation,
Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Lexical analysis for genksyms.
* Copyright 1996, 1997 Linux International.
*
* New implementation contributed by Richard Henderson <rth@tamu.edu>
* Based on original work by Bjorn Ekwall <bj0rn@blox.se>
*
* Taken from Linux modutils 2.4.22.
*/
%{

32
scripts/genksyms/parse.y
View File

@ -1,25 +1,13 @@
/* C global declaration parser for genksyms.
Copyright 1996, 1997 Linux International.
New implementation contributed by Richard Henderson <rth@tamu.edu>
Based on original work by Bjorn Ekwall <bj0rn@blox.se>
This file is part of the Linux modutils.
This program is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2 of the License, or (at your
option) any later version.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software Foundation,
Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* C global declaration parser for genksyms.
* Copyright 1996, 1997 Linux International.
*
* New implementation contributed by Richard Henderson <rth@tamu.edu>
* Based on original work by Bjorn Ekwall <bj0rn@blox.se>
*
* This file is part of the Linux modutils.
*/
%{

72
scripts/headers_install.sh
View File

@ -41,5 +41,77 @@ sed -E -e '
scripts/unifdef -U__KERNEL__ -D__EXPORTED_HEADERS__ $TMPFILE > $OUTFILE
[ $? -gt 1 ] && exit 1
# Remove /* ... */ style comments, and find CONFIG_ references in code
configs=$(sed -e '
:comment
s:/\*[^*][^*]*:/*:
s:/\*\*\**\([^/]\):/*\1:
t comment
s:/\*\*/: :
t comment
/\/\*/! b check
N
b comment
:print
P
D
:check
s:^\(CONFIG_[[:alnum:]_]*\):\1\n:
t print
s:^[[:alnum:]_][[:alnum:]_]*::
s:^[^[:alnum:]_][^[:alnum:]_]*::
t check
d
' $OUTFILE)
# The entries in the following list are not warned.
# Please do not add a new entry. This list is only for existing ones.
# The list will be reduced gradually, and deleted eventually. (hopefully)
#
# The format is <file-name>:<CONFIG-option> in each line.
config_leak_ignores="
arch/alpha/include/uapi/asm/setup.h:CONFIG_ALPHA_LEGACY_START_ADDRESS
arch/arc/include/uapi/asm/page.h:CONFIG_ARC_PAGE_SIZE_16K
arch/arc/include/uapi/asm/page.h:CONFIG_ARC_PAGE_SIZE_4K
arch/arc/include/uapi/asm/swab.h:CONFIG_ARC_HAS_SWAPE
arch/arm/include/uapi/asm/ptrace.h:CONFIG_CPU_ENDIAN_BE8
arch/hexagon/include/uapi/asm/ptrace.h:CONFIG_HEXAGON_ARCH_VERSION
arch/hexagon/include/uapi/asm/user.h:CONFIG_HEXAGON_ARCH_VERSION
arch/ia64/include/uapi/asm/cmpxchg.h:CONFIG_IA64_DEBUG_CMPXCHG
arch/m68k/include/uapi/asm/ptrace.h:CONFIG_COLDFIRE
arch/nios2/include/uapi/asm/swab.h:CONFIG_NIOS2_CI_SWAB_NO
arch/nios2/include/uapi/asm/swab.h:CONFIG_NIOS2_CI_SWAB_SUPPORT
arch/sh/include/uapi/asm/ptrace.h:CONFIG_CPU_SH5
arch/sh/include/uapi/asm/sigcontext.h:CONFIG_CPU_SH5
arch/sh/include/uapi/asm/stat.h:CONFIG_CPU_SH5
arch/x86/include/uapi/asm/auxvec.h:CONFIG_IA32_EMULATION
arch/x86/include/uapi/asm/auxvec.h:CONFIG_X86_64
arch/x86/include/uapi/asm/mman.h:CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS
include/uapi/asm-generic/fcntl.h:CONFIG_64BIT
include/uapi/linux/atmdev.h:CONFIG_COMPAT
include/uapi/linux/elfcore.h:CONFIG_BINFMT_ELF_FDPIC
include/uapi/linux/eventpoll.h:CONFIG_PM_SLEEP
include/uapi/linux/hw_breakpoint.h:CONFIG_HAVE_MIXED_BREAKPOINTS_REGS
include/uapi/linux/pktcdvd.h:CONFIG_CDROM_PKTCDVD_WCACHE
include/uapi/linux/raw.h:CONFIG_MAX_RAW_DEVS
"
for c in $configs
do
warn=1
for ignore in $config_leak_ignores
do
if echo "$INFILE:$c" | grep -q "$ignore$"; then
warn=
break
fi
done
if [ "$warn" = 1 ]; then
echo "warning: $INFILE: leak $c to user-space" >&2
fi
done
rm -f $TMPFILE
trap - EXIT

10
scripts/kconfig/Makefile
View File

@ -114,7 +114,7 @@ testconfig: $(obj)/conf
$(PYTHON3) -B -m pytest $(srctree)/$(src)/tests \
-o cache_dir=$(abspath $(obj)/tests/.cache) \
$(if $(findstring 1,$(KBUILD_VERBOSE)),--capture=no)
clean-dirs += tests/.cache
clean-files += tests/.cache
# Help text used by make help
help:
@ -166,15 +166,15 @@ $(obj)/nconf.o $(obj)/nconf.gui.o: $(obj)/nconf-cfg
# mconf: Used for the menuconfig target based on lxdialog
hostprogs-y += mconf
lxdialog := checklist.o inputbox.o menubox.o textbox.o util.o yesno.o
mconf-objs := mconf.o $(addprefix lxdialog/, $(lxdialog)) $(common-objs)
lxdialog := $(addprefix lxdialog/, \
checklist.o inputbox.o menubox.o textbox.o util.o yesno.o)
mconf-objs := mconf.o $(lxdialog) $(common-objs)
HOSTLDLIBS_mconf = $(shell . $(obj)/mconf-cfg && echo $$libs)
$(foreach f, mconf.o $(lxdialog), \
$(eval HOSTCFLAGS_$f = $$(shell . $(obj)/mconf-cfg && echo $$$$cflags)))
$(obj)/mconf.o: $(obj)/mconf-cfg
$(addprefix $(obj)/lxdialog/, $(lxdialog)): $(obj)/mconf-cfg
$(addprefix $(obj)/, mconf.o $(lxdialog)): $(obj)/mconf-cfg
# qconf: Used for the xconfig target based on Qt
hostprogs-y += qconf

12
scripts/kconfig/merge_config.sh
View File

@ -13,12 +13,12 @@
# Copyright (c) 2009-2010 Wind River Systems, Inc.
# Copyright 2011 Linaro
set -e
clean_up() {
rm -f $TMP_FILE
rm -f $MERGE_FILE
exit
}
trap clean_up HUP INT TERM
usage() {
echo "Usage: $0 [OPTIONS] [CONFIG [...]]"
@ -110,6 +110,9 @@ TMP_FILE=$(mktemp ./.tmp.config.XXXXXXXXXX)
MERGE_FILE=$(mktemp ./.merge_tmp.config.XXXXXXXXXX)
echo "Using $INITFILE as base"
trap clean_up EXIT
cat $INITFILE > $TMP_FILE
# Merge files, printing warnings on overridden values
@ -155,7 +158,6 @@ if [ "$RUNMAKE" = "false" ]; then
echo "#"
echo "# merged configuration written to $KCONFIG_CONFIG (needs make)"
echo "#"
clean_up
exit
fi
@ -177,7 +179,7 @@ make KCONFIG_ALLCONFIG=$TMP_FILE $OUTPUT_ARG $ALLTARGET
for CFG in $(sed -n -e "$SED_CONFIG_EXP1" -e "$SED_CONFIG_EXP2" $TMP_FILE); do
REQUESTED_VAL=$(grep -w -e "$CFG" $TMP_FILE)
ACTUAL_VAL=$(grep -w -e "$CFG" "$KCONFIG_CONFIG")
ACTUAL_VAL=$(grep -w -e "$CFG" "$KCONFIG_CONFIG" || true)
if [ "x$REQUESTED_VAL" != "x$ACTUAL_VAL" ] ; then
echo "Value requested for $CFG not in final .config"
echo "Requested value: $REQUESTED_VAL"
@ -185,5 +187,3 @@ for CFG in $(sed -n -e "$SED_CONFIG_EXP1" -e "$SED_CONFIG_EXP2" $TMP_FILE); do
echo ""
fi
done
clean_up

40
scripts/link-vmlinux.sh
View File

@ -64,6 +64,8 @@ vmlinux_link()
local output=${1}
local objects
info LD ${output}
# skip output file argument
shift
@ -157,6 +159,18 @@ kallsyms()
${CC} ${aflags} -c -o ${2} ${afile}
}
# Perform one step in kallsyms generation, including temporary linking of
# vmlinux.
kallsyms_step()
{
kallsymso_prev=${kallsymso}
kallsymso=.tmp_kallsyms${1}.o
kallsyms_vmlinux=.tmp_vmlinux${1}
vmlinux_link ${kallsyms_vmlinux} "${kallsymso_prev}" ${btf_vmlinux_bin_o}
kallsyms ${kallsyms_vmlinux} ${kallsymso}
}
# Create map file with all symbols from ${1}
# See mksymap for additional details
mksysmap()
@ -243,6 +257,7 @@ if [ -n "${CONFIG_DEBUG_INFO_BTF}" ]; then
fi
kallsymso=""
kallsymso_prev=""
kallsyms_vmlinux=""
if [ -n "${CONFIG_KALLSYMS}" ]; then
@ -269,32 +284,19 @@ if [ -n "${CONFIG_KALLSYMS}" ]; then
# a) Verify that the System.map from vmlinux matches the map from
# ${kallsymso}.
kallsymso=.tmp_kallsyms2.o
kallsyms_vmlinux=.tmp_vmlinux2
# step 1
vmlinux_link .tmp_vmlinux1 ${btf_vmlinux_bin_o}
kallsyms .tmp_vmlinux1 .tmp_kallsyms1.o
# step 2
vmlinux_link .tmp_vmlinux2 .tmp_kallsyms1.o ${btf_vmlinux_bin_o}
kallsyms .tmp_vmlinux2 .tmp_kallsyms2.o
kallsyms_step 1
kallsyms_step 2
# step 3
size1=$(${CONFIG_SHELL} "${srctree}/scripts/file-size.sh" .tmp_kallsyms1.o)
size2=$(${CONFIG_SHELL} "${srctree}/scripts/file-size.sh" .tmp_kallsyms2.o)
size1=$(${CONFIG_SHELL} "${srctree}/scripts/file-size.sh" ${kallsymso_prev})
size2=$(${CONFIG_SHELL} "${srctree}/scripts/file-size.sh" ${kallsymso})
if [ $size1 -ne $size2 ] || [ -n "${KALLSYMS_EXTRA_PASS}" ]; then
kallsymso=.tmp_kallsyms3.o
kallsyms_vmlinux=.tmp_vmlinux3
vmlinux_link .tmp_vmlinux3 .tmp_kallsyms2.o ${btf_vmlinux_bin_o}
kallsyms .tmp_vmlinux3 .tmp_kallsyms3.o
kallsyms_step 3
fi
fi
info LD vmlinux
vmlinux_link vmlinux "${kallsymso}" "${btf_vmlinux_bin_o}"
vmlinux_link vmlinux "${kallsymso}" ${btf_vmlinux_bin_o}
if [ -n "${CONFIG_BUILDTIME_EXTABLE_SORT}" ]; then
info SORTEX vmlinux

4
scripts/mkcompile_h
View File

@ -5,7 +5,8 @@ TARGET=$1
ARCH=$2
SMP=$3
PREEMPT=$4
CC=$5
PREEMPT_RT=$5
CC=$6
vecho() { [ "${quiet}" = "silent_" ] || echo "$@" ; }
@ -53,6 +54,7 @@ UTS_VERSION="#$VERSION"
CONFIG_FLAGS=""
if [ -n "$SMP" ] ; then CONFIG_FLAGS="SMP"; fi
if [ -n "$PREEMPT" ] ; then CONFIG_FLAGS="$CONFIG_FLAGS PREEMPT"; fi
if [ -n "$PREEMPT_RT" ] ; then CONFIG_FLAGS="$CONFIG_FLAGS PREEMPT_RT"; fi
UTS_VERSION="$UTS_VERSION $CONFIG_FLAGS $TIMESTAMP"
# Truncate to maximum length

4
scripts/mkmakefile
View File

@ -12,6 +12,6 @@ if [ "${quiet}" != "silent_" ]; then
fi
cat << EOF > Makefile
# Automatically generated by $(realpath $0): don't edit
include $(realpath $1/Makefile)
# Automatically generated by $0: don't edit
include $1/Makefile
EOF

5
scripts/mod/file2alias.c
View File

@ -34,6 +34,11 @@ typedef Elf64_Addr kernel_ulong_t;
typedef uint32_t __u32;
typedef uint16_t __u16;
typedef unsigned char __u8;
typedef struct {
__u8 b[16];
} guid_t;
/* backwards compatibility, don't use in new code */
typedef struct {
__u8 b[16];
} uuid_le;

48
scripts/mod/modpost.c
View File

@ -169,6 +169,7 @@ struct symbol {
unsigned int kernel:1; /* 1 if symbol is from kernel
* (only for external modules) **/
unsigned int preloaded:1; /* 1 if symbol from Module.symvers, or crc */
unsigned int is_static:1; /* 1 if symbol is not global */
enum export export; /* Type of export */
char name[0];
};
@ -201,6 +202,7 @@ static struct symbol *alloc_symbol(const char *name, unsigned int weak,
strcpy(s->name, name);
s->weak = weak;
s->next = next;
s->is_static = 1;
return s;
}
@ -795,9 +797,9 @@ static int match(const char *sym, const char * const pat[])
/* "*foo*" */
if (*p == '*' && *endp == '*') {
char *here, *bare = strndup(p + 1, strlen(p) - 2);
char *bare = NOFAIL(strndup(p + 1, strlen(p) - 2));
char *here = strstr(sym, bare);
here = strstr(sym, bare);
free(bare);
if (here != NULL)
return 1;
@ -1980,6 +1982,21 @@ static void read_symbols(const char *modname)
handle_modversions(mod, &info, sym, symname);
handle_moddevtable(mod, &info, sym, symname);
}
// check for static EXPORT_SYMBOL_* functions && global vars
for (sym = info.symtab_start; sym < info.symtab_stop; sym++) {
unsigned char bind = ELF_ST_BIND(sym->st_info);
if (bind == STB_GLOBAL || bind == STB_WEAK) {
struct symbol *s =
find_symbol(remove_dot(info.strtab +
sym->st_name));
if (s)
s->is_static = 0;
}
}
if (!is_vmlinux(modname) || vmlinux_section_warnings)
check_sec_ref(mod, modname, &info);
@ -2159,7 +2176,7 @@ static void add_header(struct buffer *b, struct module *mod)
buf_printf(b, "MODULE_INFO(name, KBUILD_MODNAME);\n");
buf_printf(b, "\n");
buf_printf(b, "__visible struct module __this_module\n");
buf_printf(b, "__attribute__((section(\".gnu.linkonce.this_module\"))) = {\n");
buf_printf(b, "__section(.gnu.linkonce.this_module) = {\n");
buf_printf(b, "\t.name = KBUILD_MODNAME,\n");
if (mod->has_init)
buf_printf(b, "\t.init = init_module,\n");
@ -2213,8 +2230,7 @@ static int add_versions(struct buffer *b, struct module *mod)
buf_printf(b, "\n");
buf_printf(b, "static const struct modversion_info ____versions[]\n");
buf_printf(b, "__used\n");
buf_printf(b, "__attribute__((section(\"__versions\"))) = {\n");
buf_printf(b, "__used __section(__versions) = {\n");
for (s = mod->unres; s; s = s->next) {
if (!s->module)
@ -2250,10 +2266,7 @@ static void add_depends(struct buffer *b, struct module *mod)
s->module->seen = is_vmlinux(s->module->name);
buf_printf(b, "\n");
buf_printf(b, "static const char __module_depends[]\n");
buf_printf(b, "__used\n");
buf_printf(b, "__attribute__((section(\".modinfo\"))) =\n");
buf_printf(b, "\"depends=");
buf_printf(b, "MODULE_INFO(depends, \"");
for (s = mod->unres; s; s = s->next) {
const char *p;
if (!s->module)
@ -2271,7 +2284,7 @@ static void add_depends(struct buffer *b, struct module *mod)
buf_printf(b, "%s%s", first ? "" : ",", p);
first = 0;
}
buf_printf(b, "\";\n");
buf_printf(b, "\");\n");
}
static void add_srcversion(struct buffer *b, struct module *mod)
@ -2369,6 +2382,7 @@ static void read_dump(const char *fname, unsigned int kernel)
s = sym_add_exported(symname, mod, export_no(export));
s->kernel = kernel;
s->preloaded = 1;
s->is_static = 0;
sym_update_crc(symname, mod, crc, export_no(export));
}
release_file(file, size);
@ -2425,6 +2439,7 @@ int main(int argc, char **argv)
char *dump_write = NULL, *files_source = NULL;
int opt;
int err;
int n;
struct ext_sym_list *extsym_iter;
struct ext_sym_list *extsym_start = NULL;
@ -2520,6 +2535,19 @@ int main(int argc, char **argv)
if (sec_mismatch_count && sec_mismatch_fatal)
fatal("modpost: Section mismatches detected.\n"
"Set CONFIG_SECTION_MISMATCH_WARN_ONLY=y to allow them.\n");
for (n = 0; n < SYMBOL_HASH_SIZE; n++) {
struct symbol *s = symbolhash[n];
while (s) {
if (s->is_static)
warn("\"%s\" [%s] is a static %s\n",
s->name, s->module->name,
export_str(s->export));
s = s->next;
}
}
free(buf.p);
return err;

4
usr/include/Makefile
View File

@ -115,6 +115,4 @@ header-test-y += $(filter-out $(header-test-), \
$(patsubst $(obj)/%,%, $(wildcard \
$(addprefix $(obj)/, *.h */*.h */*/*.h */*/*/*.h))))
# For GNU Make <= 4.2.1, $(wildcard $(obj)/*/) matches to not only directories
# but also regular files. Use $(filter %/, ...) just in case.
clean-dirs += $(patsubst $(obj)/%/,%,$(filter %/, $(wildcard $(obj)/*/)))
clean-files += $(filter-out Makefile, $(notdir $(wildcard $(obj)/*)))