diff --git a/.gitignore b/.gitignore index 2030c7a4d2f8..ce2c6348d372 100644 --- a/.gitignore +++ b/.gitignore @@ -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 diff --git a/Documentation/kbuild/kbuild.rst b/Documentation/kbuild/kbuild.rst index 61b2181ed3ea..f1e5dce86af7 100644 --- a/Documentation/kbuild/kbuild.rst +++ b/Documentation/kbuild/kbuild.rst @@ -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. diff --git a/Documentation/kbuild/makefiles.rst b/Documentation/kbuild/makefiles.rst index f4f0f7ffde2b..6ba9d5365ff3 100644 --- a/Documentation/kbuild/makefiles.rst +++ b/Documentation/kbuild/makefiles.rst @@ -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 diff --git a/Kbuild b/Kbuild index 8637fd14135f..3109ac786e76 100644 --- a/Kbuild +++ b/Kbuild @@ -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) diff --git a/Makefile b/Makefile index 2fa7cfa6fca3..656a8c95789d 100644 --- a/Makefile +++ b/Makefile @@ -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: diff --git a/arch/Kconfig b/arch/Kconfig index c4b2afa138ca..f2a3dc80d46b 100644 --- a/arch/Kconfig +++ b/arch/Kconfig @@ -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 + to support the module versioning for symbols + exported from assembly code. + config HAVE_REGS_AND_STACK_ACCESS_API bool help diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig index f7b19b813a70..ef179033a7c2 100644 --- a/arch/alpha/Kconfig +++ b/arch/alpha/Kconfig @@ -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 diff --git a/arch/arc/Makefile b/arch/arc/Makefile index ee6d1184c2b1..f1c44cccf8d6 100644 --- a/arch/arc/Makefile +++ b/arch/arc/Makefile @@ -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 diff --git a/arch/arc/configs/axs101_defconfig b/arch/arc/configs/axs101_defconfig index e31a8ebc3ecc..0016149f9583 100644 --- a/arch/arc/configs/axs101_defconfig +++ b/arch/arc/configs/axs101_defconfig @@ -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 diff --git a/arch/arc/configs/axs103_defconfig b/arch/arc/configs/axs103_defconfig index e0e8567f0d75..5b031582a1cf 100644 --- a/arch/arc/configs/axs103_defconfig +++ b/arch/arc/configs/axs103_defconfig @@ -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 diff --git a/arch/arc/configs/axs103_smp_defconfig b/arch/arc/configs/axs103_smp_defconfig index fcbc952bc75b..d4eec39e0112 100644 --- a/arch/arc/configs/axs103_smp_defconfig +++ b/arch/arc/configs/axs103_smp_defconfig @@ -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 diff --git a/arch/arc/configs/haps_hs_defconfig b/arch/arc/configs/haps_hs_defconfig index 436f2135bdc1..47ff8a97e42d 100644 --- a/arch/arc/configs/haps_hs_defconfig +++ b/arch/arc/configs/haps_hs_defconfig @@ -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 diff --git a/arch/arc/configs/haps_hs_smp_defconfig b/arch/arc/configs/haps_hs_smp_defconfig index 33a787c375e2..9685fd5f57a4 100644 --- a/arch/arc/configs/haps_hs_smp_defconfig +++ b/arch/arc/configs/haps_hs_smp_defconfig @@ -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 diff --git a/arch/arc/configs/hsdk_defconfig b/arch/arc/configs/hsdk_defconfig index 403125d9c9a3..9b9a74444ce2 100644 --- a/arch/arc/configs/hsdk_defconfig +++ b/arch/arc/configs/hsdk_defconfig @@ -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 diff --git a/arch/arc/configs/nps_defconfig b/arch/arc/configs/nps_defconfig index f0a077c00efa..5978d4d7d5b0 100644 --- a/arch/arc/configs/nps_defconfig +++ b/arch/arc/configs/nps_defconfig @@ -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 diff --git a/arch/arc/configs/nsim_700_defconfig b/arch/arc/configs/nsim_700_defconfig index de398c7b10b3..2b9b11474640 100644 --- a/arch/arc/configs/nsim_700_defconfig +++ b/arch/arc/configs/nsim_700_defconfig @@ -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 diff --git a/arch/arc/configs/nsim_hs_defconfig b/arch/arc/configs/nsim_hs_defconfig index 2dbd34a9ff07..bab3dd255841 100644 --- a/arch/arc/configs/nsim_hs_defconfig +++ b/arch/arc/configs/nsim_hs_defconfig @@ -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 diff --git a/arch/arc/configs/nsim_hs_smp_defconfig b/arch/arc/configs/nsim_hs_smp_defconfig index c7135f1e2583..90d2d50fb8dc 100644 --- a/arch/arc/configs/nsim_hs_smp_defconfig +++ b/arch/arc/configs/nsim_hs_smp_defconfig @@ -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 diff --git a/arch/arc/configs/nsimosci_defconfig b/arch/arc/configs/nsimosci_defconfig index 385a71d3c478..5dd470b6609e 100644 --- a/arch/arc/configs/nsimosci_defconfig +++ b/arch/arc/configs/nsimosci_defconfig @@ -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 diff --git a/arch/arc/configs/nsimosci_hs_defconfig b/arch/arc/configs/nsimosci_hs_defconfig index 248a2c3bdc12..3532e86f7bff 100644 --- a/arch/arc/configs/nsimosci_hs_defconfig +++ b/arch/arc/configs/nsimosci_hs_defconfig @@ -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 diff --git a/arch/arc/configs/nsimosci_hs_smp_defconfig b/arch/arc/configs/nsimosci_hs_smp_defconfig index 1a4bc7b660fb..d90448bee064 100644 --- a/arch/arc/configs/nsimosci_hs_smp_defconfig +++ b/arch/arc/configs/nsimosci_hs_smp_defconfig @@ -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 diff --git a/arch/arc/configs/tb10x_defconfig b/arch/arc/configs/tb10x_defconfig index dc739bd093e3..3a138f8c7299 100644 --- a/arch/arc/configs/tb10x_defconfig +++ b/arch/arc/configs/tb10x_defconfig @@ -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 diff --git a/arch/arc/configs/vdk_hs38_defconfig b/arch/arc/configs/vdk_hs38_defconfig index 0c3b21416819..d7c858df520c 100644 --- a/arch/arc/configs/vdk_hs38_defconfig +++ b/arch/arc/configs/vdk_hs38_defconfig @@ -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 diff --git a/arch/arc/configs/vdk_hs38_smp_defconfig b/arch/arc/configs/vdk_hs38_smp_defconfig index f9ad9d3ee702..015c1d43889e 100644 --- a/arch/arc/configs/vdk_hs38_smp_defconfig +++ b/arch/arc/configs/vdk_hs38_smp_defconfig @@ -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 diff --git a/arch/arm/Makefile b/arch/arm/Makefile index f9002e44f18f..be2fc3e79434 100644 --- a/arch/arm/Makefile +++ b/arch/arm/Makefile @@ -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 += $(srctree)/arch/arm/kernel/module.lds endif GZFLAGS :=-9 diff --git a/arch/arm/kvm/Makefile b/arch/arm/kvm/Makefile index 531e59f5be9c..b76b75bd9e00 100644 --- a/arch/arm/kvm/Makefile +++ b/arch/arm/kvm/Makefile @@ -8,13 +8,14 @@ ifeq ($(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/ diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 835a1509882b..5e919afa3f62 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -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 diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile index f843d298792d..84a3d502c5a5 100644 --- a/arch/arm64/Makefile +++ b/arch/arm64/Makefile @@ -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 diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig index 9711cf730929..685a3df126ca 100644 --- a/arch/ia64/Kconfig +++ b/arch/ia64/Kconfig @@ -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 diff --git a/arch/ia64/Makefile b/arch/ia64/Makefile index e0bb2b6aaa35..32240000dc0c 100644 --- a/arch/ia64/Makefile +++ b/arch/ia64/Makefile @@ -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 := diff --git a/arch/m68k/Kconfig b/arch/m68k/Kconfig index 935599893d3e..6663f1741798 100644 --- a/arch/m68k/Kconfig +++ b/arch/m68k/Kconfig @@ -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 diff --git a/arch/m68k/Makefile b/arch/m68k/Makefile index 482513b9af2c..5d9288384096 100644 --- a/arch/m68k/Makefile +++ b/arch/m68k/Makefile @@ -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 diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index aff1cadeea43..904c096fa4da 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -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 diff --git a/arch/mips/boot/Makefile b/arch/mips/boot/Makefile index 3ce4dd578370..528bd73d530a 100644 --- a/arch/mips/boot/Makefile +++ b/arch/mips/boot/Makefile @@ -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 $(objtree)/arch/mips \ --warning no-unit_address_vs_reg" \ diff --git a/arch/parisc/Makefile b/arch/parisc/Makefile index 3b77d729057f..36b834f1c933 100644 --- a/arch/parisc/Makefile +++ b/arch/parisc/Makefile @@ -60,7 +60,7 @@ KBUILD_CFLAGS += -DCC_USING_PATCHABLE_FUNCTION_ENTRY=1 \ -DFTRACE_PATCHABLE_FUNCTION_SIZE=$(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 diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index 891cd23f9c8b..19ee5f155a08 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -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) diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile index 403f7e193833..37990dd105dc 100644 --- a/arch/powerpc/Makefile +++ b/arch/powerpc/Makefile @@ -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 diff --git a/arch/powerpc/Makefile.postlink b/arch/powerpc/Makefile.postlink index 83f8e5ba2722..134f12f89b92 100644 --- a/arch/powerpc/Makefile.postlink +++ b/arch/powerpc/Makefile.postlink @@ -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)" "$@" diff --git a/arch/powerpc/kernel/prom_init_check.sh b/arch/powerpc/kernel/prom_init_check.sh index 160bef0d553d..78bab17b1396 100644 --- a/arch/powerpc/kernel/prom_init_check.sh +++ b/arch/powerpc/kernel/prom_init_check.sh @@ -33,7 +33,7 @@ OBJ="$2" ERROR=0 -function check_section() +check_section() { file=$1 section=$2 diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index 1211543c330c..71d29fb4008a 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -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 diff --git a/arch/riscv/Makefile b/arch/riscv/Makefile index 4f0a3d2018d2..f5e914210245 100644 --- a/arch/riscv/Makefile +++ b/arch/riscv/Makefile @@ -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 diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index 8c5b05d91106..ea5eac00b327 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -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 diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig index 7926a2e11bdc..fbc1aecf0f94 100644 --- a/arch/sparc/Kconfig +++ b/arch/sparc/Kconfig @@ -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 diff --git a/arch/um/Kconfig b/arch/um/Kconfig index 3c3adfc486f2..fec6b4ca2b6e 100644 --- a/arch/um/Kconfig +++ b/arch/um/Kconfig @@ -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 diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 4195f44c6a09..c28ab5c01879 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -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 diff --git a/arch/x86/entry/vdso/Makefile b/arch/x86/entry/vdso/Makefile index 8df549138193..0f2154106d01 100644 --- a/arch/x86/entry/vdso/Makefile +++ b/arch/x86/entry/vdso/Makefile @@ -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 diff --git a/drivers/gpu/drm/amd/display/dc/calcs/Makefile b/drivers/gpu/drm/amd/display/dc/calcs/Makefile index 16614d73a5fc..985633c08a26 100644 --- a/drivers/gpu/drm/amd/display/dc/calcs/Makefile +++ b/drivers/gpu/drm/amd/display/dc/calcs/Makefile @@ -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 diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/Makefile b/drivers/gpu/drm/amd/display/dc/dcn20/Makefile index f57a3b281408..ddb8d5649e79 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn20/Makefile +++ b/drivers/gpu/drm/amd/display/dc/dcn20/Makefile @@ -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)) diff --git a/drivers/gpu/drm/amd/display/dc/dcn21/Makefile b/drivers/gpu/drm/amd/display/dc/dcn21/Makefile index b2b39090fb57..8cd9de8b1a7a 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn21/Makefile +++ b/drivers/gpu/drm/amd/display/dc/dcn21/Makefile @@ -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)) diff --git a/drivers/gpu/drm/amd/display/dc/dml/Makefile b/drivers/gpu/drm/amd/display/dc/dml/Makefile index af2a864a6da0..5b2a65b42403 100644 --- a/drivers/gpu/drm/amd/display/dc/dml/Makefile +++ b/drivers/gpu/drm/amd/display/dc/dml/Makefile @@ -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 diff --git a/drivers/gpu/drm/amd/display/dc/dsc/Makefile b/drivers/gpu/drm/amd/display/dc/dsc/Makefile index 17db603f2d1f..b456cd23c6fa 100644 --- a/drivers/gpu/drm/amd/display/dc/dsc/Makefile +++ b/drivers/gpu/drm/amd/display/dc/dsc/Makefile @@ -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 diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile index 658b930d34a8..2587ea834f06 100644 --- a/drivers/gpu/drm/i915/Makefile +++ b/drivers/gpu/drm/i915/Makefile @@ -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) diff --git a/drivers/net/ethernet/aquantia/atlantic/hw_atl/Makefile b/drivers/net/ethernet/aquantia/atlantic/hw_atl/Makefile deleted file mode 100644 index 805fa28f391a..000000000000 --- a/drivers/net/ethernet/aquantia/atlantic/hw_atl/Makefile +++ /dev/null @@ -1,2 +0,0 @@ -# SPDX-License-Identifier: GPL-2.0 -# kbuild requires Makefile in a directory to build individual objects diff --git a/drivers/net/ethernet/mellanox/mlx5/core/accel/Makefile b/drivers/net/ethernet/mellanox/mlx5/core/accel/Makefile deleted file mode 100644 index c78512eed8d7..000000000000 --- a/drivers/net/ethernet/mellanox/mlx5/core/accel/Makefile +++ /dev/null @@ -1,2 +0,0 @@ -# SPDX-License-Identifier: GPL-2.0-only -subdir-ccflags-y += -I$(src)/.. diff --git a/drivers/net/ethernet/mellanox/mlx5/core/diag/Makefile b/drivers/net/ethernet/mellanox/mlx5/core/diag/Makefile deleted file mode 100644 index c78512eed8d7..000000000000 --- a/drivers/net/ethernet/mellanox/mlx5/core/diag/Makefile +++ /dev/null @@ -1,2 +0,0 @@ -# SPDX-License-Identifier: GPL-2.0-only -subdir-ccflags-y += -I$(src)/.. diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/Makefile b/drivers/net/ethernet/mellanox/mlx5/core/en/Makefile deleted file mode 100644 index c78512eed8d7..000000000000 --- a/drivers/net/ethernet/mellanox/mlx5/core/en/Makefile +++ /dev/null @@ -1,2 +0,0 @@ -# SPDX-License-Identifier: GPL-2.0-only -subdir-ccflags-y += -I$(src)/.. diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/xsk/Makefile b/drivers/net/ethernet/mellanox/mlx5/core/en/xsk/Makefile deleted file mode 100644 index 5ee42991900a..000000000000 --- a/drivers/net/ethernet/mellanox/mlx5/core/en/xsk/Makefile +++ /dev/null @@ -1 +0,0 @@ -subdir-ccflags-y += -I$(src)/../.. diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/Makefile b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/Makefile deleted file mode 100644 index c78512eed8d7..000000000000 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/Makefile +++ /dev/null @@ -1,2 +0,0 @@ -# SPDX-License-Identifier: GPL-2.0-only -subdir-ccflags-y += -I$(src)/.. diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fpga/Makefile b/drivers/net/ethernet/mellanox/mlx5/core/fpga/Makefile deleted file mode 100644 index c78512eed8d7..000000000000 --- a/drivers/net/ethernet/mellanox/mlx5/core/fpga/Makefile +++ /dev/null @@ -1,2 +0,0 @@ -# SPDX-License-Identifier: GPL-2.0-only -subdir-ccflags-y += -I$(src)/.. diff --git a/drivers/net/ethernet/mellanox/mlx5/core/ipoib/Makefile b/drivers/net/ethernet/mellanox/mlx5/core/ipoib/Makefile deleted file mode 100644 index c78512eed8d7..000000000000 --- a/drivers/net/ethernet/mellanox/mlx5/core/ipoib/Makefile +++ /dev/null @@ -1,2 +0,0 @@ -# SPDX-License-Identifier: GPL-2.0-only -subdir-ccflags-y += -I$(src)/.. diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lib/Makefile b/drivers/net/ethernet/mellanox/mlx5/core/lib/Makefile deleted file mode 100644 index c78512eed8d7..000000000000 --- a/drivers/net/ethernet/mellanox/mlx5/core/lib/Makefile +++ /dev/null @@ -1,2 +0,0 @@ -# SPDX-License-Identifier: GPL-2.0-only -subdir-ccflags-y += -I$(src)/.. diff --git a/drivers/net/ethernet/netronome/nfp/bpf/Makefile b/drivers/net/ethernet/netronome/nfp/bpf/Makefile deleted file mode 100644 index 805fa28f391a..000000000000 --- a/drivers/net/ethernet/netronome/nfp/bpf/Makefile +++ /dev/null @@ -1,2 +0,0 @@ -# SPDX-License-Identifier: GPL-2.0 -# kbuild requires Makefile in a directory to build individual objects diff --git a/drivers/net/ethernet/netronome/nfp/flower/Makefile b/drivers/net/ethernet/netronome/nfp/flower/Makefile deleted file mode 100644 index 805fa28f391a..000000000000 --- a/drivers/net/ethernet/netronome/nfp/flower/Makefile +++ /dev/null @@ -1,2 +0,0 @@ -# SPDX-License-Identifier: GPL-2.0 -# kbuild requires Makefile in a directory to build individual objects diff --git a/drivers/net/ethernet/netronome/nfp/nfpcore/Makefile b/drivers/net/ethernet/netronome/nfp/nfpcore/Makefile deleted file mode 100644 index 805fa28f391a..000000000000 --- a/drivers/net/ethernet/netronome/nfp/nfpcore/Makefile +++ /dev/null @@ -1,2 +0,0 @@ -# SPDX-License-Identifier: GPL-2.0 -# kbuild requires Makefile in a directory to build individual objects diff --git a/drivers/net/ethernet/netronome/nfp/nfpcore/nfp6000/Makefile b/drivers/net/ethernet/netronome/nfp/nfpcore/nfp6000/Makefile deleted file mode 100644 index 805fa28f391a..000000000000 --- a/drivers/net/ethernet/netronome/nfp/nfpcore/nfp6000/Makefile +++ /dev/null @@ -1,2 +0,0 @@ -# SPDX-License-Identifier: GPL-2.0 -# kbuild requires Makefile in a directory to build individual objects diff --git a/drivers/net/ethernet/netronome/nfp/nic/Makefile b/drivers/net/ethernet/netronome/nfp/nic/Makefile deleted file mode 100644 index 805fa28f391a..000000000000 --- a/drivers/net/ethernet/netronome/nfp/nic/Makefile +++ /dev/null @@ -1,2 +0,0 @@ -# SPDX-License-Identifier: GPL-2.0 -# kbuild requires Makefile in a directory to build individual objects diff --git a/include/linux/compiler_types.h b/include/linux/compiler_types.h index 599c27b56c29..b056a40116da 100644 --- a/include/linux/compiler_types.h +++ b/include/linux/compiler_types.h @@ -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. diff --git a/include/linux/export.h b/include/linux/export.h index fd8711ed9ac4..7d8c112a8b61 100644 --- a/include/linux/export.h +++ b/include/linux/export.h @@ -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 */ diff --git a/include/linux/vermagic.h b/include/linux/vermagic.h index bae807eb2933..9aced11e9000 100644 --- a/include/linux/vermagic.h +++ b/include/linux/vermagic.h @@ -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 diff --git a/init/Kconfig b/init/Kconfig index ec1021fd3371..f4534c58342d 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -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 diff --git a/init/Makefile b/init/Makefile index a3e5ce2bcf08..6246a06364d0 100644 --- a/init/Makefile +++ b/init/Makefile @@ -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)" diff --git a/kernel/Makefile b/kernel/Makefile index 48c5376d290a..25f9d83d1bbf 100644 --- a/kernel/Makefile +++ b/kernel/Makefile @@ -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) diff --git a/scripts/Kconfig.include b/scripts/Kconfig.include index 4bbf4fc163a2..d4adfbe42690 100644 --- a/scripts/Kconfig.include +++ b/scripts/Kconfig.include @@ -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)) diff --git a/scripts/Makefile b/scripts/Makefile index 16bcb8087899..c42891e10ba3 100644 --- a/scripts/Makefile +++ b/scripts/Makefile @@ -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 diff --git a/scripts/Makefile.build b/scripts/Makefile.build index 2f66ed388d1c..f72aba64d611 100644 --- a/scripts/Makefile.build +++ b/scripts/Makefile.build @@ -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)) diff --git a/scripts/Makefile.clean b/scripts/Makefile.clean index 0b80e3207b20..e367eb95c5c0 100644 --- a/scripts/Makefile.clean +++ b/scripts/Makefile.clean @@ -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 @: diff --git a/scripts/Makefile.extrawarn b/scripts/Makefile.extrawarn index a74ce2e3c33e..ecddf83ac142 100644 --- a/scripts/Makefile.extrawarn +++ b/scripts/Makefile.extrawarn @@ -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 diff --git a/scripts/Makefile.host b/scripts/Makefile.host index 2208ebbd8c4c..4c51c95d40f4 100644 --- a/scripts/Makefile.host +++ b/scripts/Makefile.host @@ -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) diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib index 41c50f9461e5..4a0cdd6f5909 100644 --- a/scripts/Makefile.lib +++ b/scripts/Makefile.lib @@ -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) \ diff --git a/scripts/Makefile.modfinal b/scripts/Makefile.modfinal new file mode 100644 index 000000000000..411c1e600e7d --- /dev/null +++ b/scripts/Makefile.modfinal @@ -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) diff --git a/scripts/Makefile.modpost b/scripts/Makefile.modpost index 26e6574ecd08..9800a3988f23 100644 --- a/scripts/Makefile.modpost +++ b/scripts/Makefile.modpost @@ -15,15 +15,13 @@ # 2) modpost is then used to # 3) create one .mod.c file pr. module # 4) create one Module.symvers file with CRC for all exported symbols -# 5) compile all .mod.c files -# 6) final link of the module to a 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 diff --git a/scripts/package/Makefile b/scripts/Makefile.package similarity index 92% rename from scripts/package/Makefile rename to scripts/Makefile.package index ca7f46b562a4..56eadcc48d46 100644 --- a/scripts/package/Makefile +++ b/scripts/Makefile.package @@ -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) diff --git a/scripts/basic/Makefile b/scripts/basic/Makefile index 548aeb592806..7c9cb80d097b 100644 --- a/scripts/basic/Makefile +++ b/scripts/basic/Makefile @@ -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))): $(obj)/fixdep diff --git a/scripts/genksyms/Makefile b/scripts/genksyms/Makefile index 66c314bc5933..78629f515e78 100644 --- a/scripts/genksyms/Makefile +++ b/scripts/genksyms/Makefile @@ -12,22 +12,15 @@ genksyms-objs := genksyms.o parse.tab.o lex.lex.o # # Just in case, run "$(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) diff --git a/scripts/genksyms/keywords.c b/scripts/genksyms/keywords.c index c586d32dd2c3..7a85c4e21175 100644 --- a/scripts/genksyms/keywords.c +++ b/scripts/genksyms/keywords.c @@ -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 }, diff --git a/scripts/genksyms/lex.l b/scripts/genksyms/lex.l index d29c774f51b6..e265c5d96861 100644 --- a/scripts/genksyms/lex.l +++ b/scripts/genksyms/lex.l @@ -1,25 +1,13 @@ -/* Lexical analysis for genksyms. - Copyright 1996, 1997 Linux International. - - New implementation contributed by Richard Henderson - Based on original work by Bjorn Ekwall - - 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 + * Based on original work by Bjorn Ekwall + * + * Taken from Linux modutils 2.4.22. + */ %{ diff --git a/scripts/genksyms/parse.y b/scripts/genksyms/parse.y index 1ebcf52cd0f9..e22b42245bcc 100644 --- a/scripts/genksyms/parse.y +++ b/scripts/genksyms/parse.y @@ -1,25 +1,13 @@ -/* C global declaration parser for genksyms. - Copyright 1996, 1997 Linux International. - - New implementation contributed by Richard Henderson - Based on original work by Bjorn Ekwall - - 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 + * Based on original work by Bjorn Ekwall + * + * This file is part of the Linux modutils. + */ %{ diff --git a/scripts/headers_install.sh b/scripts/headers_install.sh index bbaf29386995..a07668a5c36b 100755 --- a/scripts/headers_install.sh +++ b/scripts/headers_install.sh @@ -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 : 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 diff --git a/scripts/kconfig/Makefile b/scripts/kconfig/Makefile index 7656e1137b6b..ef2f2336c469 100644 --- a/scripts/kconfig/Makefile +++ b/scripts/kconfig/Makefile @@ -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 diff --git a/scripts/kconfig/merge_config.sh b/scripts/kconfig/merge_config.sh index d924c51d28b7..63c8565206a4 100755 --- a/scripts/kconfig/merge_config.sh +++ b/scripts/kconfig/merge_config.sh @@ -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" $TMP_FILE); do echo "" fi done - -clean_up diff --git a/scripts/link-vmlinux.sh b/scripts/link-vmlinux.sh index 8c59970a09dc..06495379fcd8 100755 --- a/scripts/link-vmlinux.sh +++ b/scripts/link-vmlinux.sh @@ -64,6 +64,8 @@ vmlinux_link() local output=${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 diff --git a/scripts/mkcompile_h b/scripts/mkcompile_h index 2339f86126cb..d1d757c6edf4 100755 --- a/scripts/mkcompile_h +++ b/scripts/mkcompile_h @@ -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 $TIMESTAMP" # Truncate to maximum length diff --git a/scripts/mkmakefile b/scripts/mkmakefile index 4d0faebb1719..1cb174751429 100755 --- a/scripts/mkmakefile +++ b/scripts/mkmakefile @@ -12,6 +12,6 @@ if [ "${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 diff --git a/scripts/mod/file2alias.c b/scripts/mod/file2alias.c index e17a29ae2e97..c91eba751804 100644 --- a/scripts/mod/file2alias.c +++ b/scripts/mod/file2alias.c @@ -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; diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c index f277e116e0eb..820eed87fb43 100644 --- a/scripts/mod/modpost.c +++ b/scripts/mod/modpost.c @@ -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; diff --git a/usr/include/Makefile b/usr/include/Makefile index 1fb6abe29b2f..05c71ef42f51 100644 --- a/usr/include/Makefile +++ b/usr/include/Makefile @@ -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)/*)))