diff options
Diffstat (limited to 'scripts')
| -rw-r--r-- | scripts/Kbuild.include | 23 | ||||
| -rw-r--r-- | scripts/Makefile.build | 56 | ||||
| -rw-r--r-- | scripts/Makefile.compiler | 10 | ||||
| -rw-r--r-- | scripts/Makefile.extrawarn | 4 | ||||
| -rw-r--r-- | scripts/Makefile.lib | 33 | ||||
| -rw-r--r-- | scripts/Makefile.modfinal | 2 | ||||
| -rw-r--r-- | scripts/Makefile.modpost | 114 | ||||
| -rw-r--r-- | scripts/Makefile.package | 5 | ||||
| -rw-r--r-- | scripts/Makefile.vmlinux | 21 | ||||
| -rw-r--r-- | scripts/Makefile.vmlinux_o | 47 | ||||
| -rw-r--r-- | scripts/asn1_compiler.c | 6 | ||||
| -rwxr-xr-x | scripts/atomic/check-atomics.sh | 33 | ||||
| -rwxr-xr-x | scripts/check-local-export | 97 | ||||
| -rwxr-xr-x | scripts/clang-tools/gen_compile_commands.py | 19 | ||||
| -rw-r--r-- | scripts/head-object-list.txt | 53 | ||||
| -rw-r--r-- | scripts/kallsyms.c | 54 | ||||
| -rw-r--r-- | scripts/kconfig/conf.c | 2 | ||||
| -rw-r--r-- | scripts/kconfig/lkc.h | 5 | ||||
| -rwxr-xr-x | scripts/link-vmlinux.sh | 72 | ||||
| -rwxr-xr-x | scripts/mkcompile_h | 96 | ||||
| -rwxr-xr-x | scripts/mksysmap | 24 | ||||
| -rwxr-xr-x | scripts/package/mkspec | 4 |
22 files changed, 359 insertions, 421 deletions
diff --git a/scripts/Kbuild.include b/scripts/Kbuild.include index ece44b735061..2bc08ace38a3 100644 --- a/scripts/Kbuild.include +++ b/scripts/Kbuild.include @@ -100,8 +100,29 @@ echo-cmd = $(if $($(quiet)cmd_$(1)),\ quiet_redirect := silent_redirect := exec >/dev/null; +# Delete the target on interruption +# +# GNU Make automatically deletes the target if it has already been changed by +# the interrupted recipe. So, you can safely stop the build by Ctrl-C (Make +# will delete incomplete targets), and resume it later. +# +# However, this does not work when the stderr is piped to another program, like +# $ make >&2 | tee log +# Make dies with SIGPIPE before cleaning the targets. +# +# To address it, we clean the target in signal traps. +# +# Make deletes the target when it catches SIGHUP, SIGINT, SIGQUIT, SIGTERM. +# So, we cover them, and also SIGPIPE just in case. +# +# Of course, this is unneeded for phony targets. +delete-on-interrupt = \ + $(if $(filter-out $(PHONY), $@), \ + $(foreach sig, HUP INT QUIT TERM PIPE, \ + trap 'rm -f $@; trap - $(sig); kill -s $(sig) $$$$' $(sig);)) + # printing commands -cmd = @set -e; $(echo-cmd) $($(quiet)redirect) $(cmd_$(1)) +cmd = @set -e; $(echo-cmd) $($(quiet)redirect) $(delete-on-interrupt) $(cmd_$(1)) ### # if_changed - execute command if any prerequisite is newer than diff --git a/scripts/Makefile.build b/scripts/Makefile.build index 27be77c0d6d8..22adbf89cb31 100644 --- a/scripts/Makefile.build +++ b/scripts/Makefile.build @@ -5,8 +5,8 @@ src := $(obj) -PHONY := __build -__build: +PHONY := $(obj)/ +$(obj)/: # Init all relevant variables used in kbuild files so # 1) they have correct type @@ -383,7 +383,7 @@ $(obj)/%.o: $(src)/%.S FORCE targets += $(filter-out $(subdir-builtin), $(real-obj-y)) targets += $(filter-out $(subdir-modorder), $(real-obj-m)) -targets += $(real-dtb-y) $(lib-y) $(always-y) $(MAKECMDGOALS) +targets += $(real-dtb-y) $(lib-y) $(always-y) # Linker scripts preprocessor (.lds.S -> .lds) # --------------------------------------------------------------------------- @@ -434,7 +434,7 @@ $(obj)/built-in.a: $(real-obj-y) FORCE cmd_modules_order = { $(foreach m, $(real-prereqs), \ $(if $(filter %/modules.order, $m), cat $m, echo $(patsubst %.o,%.ko,$m));) :; } \ - | $(AWK) '!x[$$0]++' - > $@ + > $@ $(obj)/modules.order: $(obj-m) FORCE $(call if_changed,modules_order) @@ -460,8 +460,6 @@ $(multi-obj-m): %.o: %.mod FORCE $(call if_changed_rule,ld_multi_m) $(call multi_depend, $(multi-obj-m), .o, -objs -y -m) -targets := $(filter-out $(PHONY), $(targets)) - # Add intermediate targets: # When building objects with specific suffix patterns, add intermediate # targets that the final targets are derived from. @@ -480,52 +478,29 @@ targets += $(call intermediate_targets, .asn1.o, .asn1.c .asn1.h) \ # Build # --------------------------------------------------------------------------- -ifdef single-build - -KBUILD_SINGLE_TARGETS := $(filter $(obj)/%, $(KBUILD_SINGLE_TARGETS)) - -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-out $(curdir-single), $(KBUILD_SINGLE_TARGETS))) - -single-subdirs := $(foreach d, $(subdir-ym), \ - $(if $(filter $(d)/%, $(KBUILD_SINGLE_TARGETS)), $(d))) - -__build: $(curdir-single) $(single-subdirs) -ifneq ($(unknown-single),) - $(Q)$(MAKE) -f /dev/null $(unknown-single) -endif +$(obj)/: $(if $(KBUILD_BUILTIN), $(targets-for-builtin)) \ + $(if $(KBUILD_MODULES), $(targets-for-modules)) \ + $(subdir-ym) $(always-y) @: -ifeq ($(curdir-single),) -# Nothing to do in this directory. Do not include any .*.cmd file for speed-up -targets := -else -targets += $(curdir-single) -endif +# Single targets +# --------------------------------------------------------------------------- -else +single-subdirs := $(foreach d, $(subdir-ym), $(if $(filter $d/%, $(MAKECMDGOALS)), $d)) +single-subdir-goals := $(filter $(addsuffix /%, $(single-subdirs)), $(MAKECMDGOALS)) -__build: $(if $(KBUILD_BUILTIN), $(targets-for-builtin)) \ - $(if $(KBUILD_MODULES), $(targets-for-modules)) \ - $(subdir-ym) $(always-y) +$(single-subdir-goals): $(single-subdirs) @: -endif - # Descending # --------------------------------------------------------------------------- PHONY += $(subdir-ym) $(subdir-ym): $(Q)$(MAKE) $(build)=$@ \ - $(if $(filter $@/, $(KBUILD_SINGLE_TARGETS)),single-build=) \ need-builtin=$(if $(filter $@/built-in.a, $(subdir-builtin)),1) \ - need-modorder=$(if $(filter $@/modules.order, $(subdir-modorder)),1) + need-modorder=$(if $(filter $@/modules.order, $(subdir-modorder)),1) \ + $(filter $@/%, $(single-subdir-goals)) # Add FORCE to the prequisites of a target to force it to be always rebuilt. # --------------------------------------------------------------------------- @@ -534,6 +509,9 @@ PHONY += FORCE FORCE: +targets += $(filter-out $(single-subdir-goals), $(MAKECMDGOALS)) +targets := $(filter-out $(PHONY), $(targets)) + # 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 diff --git a/scripts/Makefile.compiler b/scripts/Makefile.compiler index 94d0d40cddb3..20d353dcabfb 100644 --- a/scripts/Makefile.compiler +++ b/scripts/Makefile.compiler @@ -61,9 +61,13 @@ cc-option-yn = $(call try-run,\ cc-disable-warning = $(call try-run,\ $(CC) -Werror $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) -W$(strip $(1)) -c -x c /dev/null -o "$$TMP",-Wno-$(strip $(1))) -# cc-ifversion -# Usage: EXTRA_CFLAGS += $(call cc-ifversion, -lt, 0402, -O1) -cc-ifversion = $(shell [ $(CONFIG_GCC_VERSION)0 $(1) $(2)000 ] && echo $(3) || echo $(4)) +# gcc-min-version +# Usage: cflags-$(call gcc-min-version, 70100) += -foo +gcc-min-version = $(shell [ $(CONFIG_GCC_VERSION)0 -ge $(1)0 ] && echo y) + +# clang-min-version +# Usage: cflags-$(call clang-min-version, 110000) += -foo +clang-min-version = $(shell [ $(CONFIG_CLANG_VERSION)0 -ge $(1)0 ] && echo y) # ld-option # Usage: KBUILD_LDFLAGS += $(call ld-option, -X, -Y) diff --git a/scripts/Makefile.extrawarn b/scripts/Makefile.extrawarn index 52bd7df84fd6..6bbba36c5969 100644 --- a/scripts/Makefile.extrawarn +++ b/scripts/Makefile.extrawarn @@ -48,7 +48,7 @@ else ifdef CONFIG_CC_IS_CLANG KBUILD_CFLAGS += -Wno-initializer-overrides # Clang before clang-16 would warn on default argument promotions. -ifeq ($(shell [ $(CONFIG_CLANG_VERSION) -lt 160000 ] && echo y),y) +ifneq ($(call clang-min-version, 160000),y) # Disable -Wformat KBUILD_CFLAGS += -Wno-format # Then re-enable flags that were part of the -Wformat group that aren't @@ -56,7 +56,7 @@ KBUILD_CFLAGS += -Wno-format KBUILD_CFLAGS += -Wformat-extra-args -Wformat-invalid-specifier KBUILD_CFLAGS += -Wformat-zero-length -Wnonnull # Requires clang-12+. -ifeq ($(shell [ $(CONFIG_CLANG_VERSION) -ge 120000 ] && echo y),y) +ifeq ($(call clang-min-version, 120000),y) KBUILD_CFLAGS += -Wformat-insufficient-args endif endif diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib index c88b98b5dc44..3dd688b7baab 100644 --- a/scripts/Makefile.lib +++ b/scripts/Makefile.lib @@ -90,6 +90,7 @@ always-y += $(dtb-y) # Add subdir path +ifneq ($(obj),.) extra-y := $(addprefix $(obj)/,$(extra-y)) always-y := $(addprefix $(obj)/,$(always-y)) targets := $(addprefix $(obj)/,$(targets)) @@ -101,6 +102,7 @@ multi-obj-m := $(addprefix $(obj)/, $(multi-obj-m)) multi-dtb-y := $(addprefix $(obj)/, $(multi-dtb-y)) real-dtb-y := $(addprefix $(obj)/, $(real-dtb-y)) subdir-ym := $(addprefix $(obj)/,$(subdir-ym)) +endif # Finds the multi-part object the current object will be linked into. # If the object belongs to two or more multi-part objects, list them all. @@ -241,25 +243,26 @@ ifdef CONFIG_OBJTOOL objtool := $(objtree)/tools/objtool/objtool -objtool_args = \ - $(if $(CONFIG_HAVE_JUMP_LABEL_HACK), --hacks=jump_label) \ - $(if $(CONFIG_HAVE_NOINSTR_HACK), --hacks=noinstr) \ - $(if $(CONFIG_X86_KERNEL_IBT), --ibt) \ - $(if $(CONFIG_FTRACE_MCOUNT_USE_OBJTOOL), --mcount) \ - $(if $(CONFIG_UNWINDER_ORC), --orc) \ - $(if $(CONFIG_RETPOLINE), --retpoline) \ - $(if $(CONFIG_RETHUNK), --rethunk) \ - $(if $(CONFIG_SLS), --sls) \ - $(if $(CONFIG_STACK_VALIDATION), --stackval) \ - $(if $(CONFIG_HAVE_STATIC_CALL_INLINE), --static-call) \ - $(if $(CONFIG_HAVE_UACCESS_VALIDATION), --uaccess) \ +objtool-args-$(CONFIG_HAVE_JUMP_LABEL_HACK) += --hacks=jump_label +objtool-args-$(CONFIG_HAVE_NOINSTR_HACK) += --hacks=noinstr +objtool-args-$(CONFIG_X86_KERNEL_IBT) += --ibt +objtool-args-$(CONFIG_FTRACE_MCOUNT_USE_OBJTOOL) += --mcount +objtool-args-$(CONFIG_UNWINDER_ORC) += --orc +objtool-args-$(CONFIG_RETPOLINE) += --retpoline +objtool-args-$(CONFIG_RETHUNK) += --rethunk +objtool-args-$(CONFIG_SLS) += --sls +objtool-args-$(CONFIG_STACK_VALIDATION) += --stackval +objtool-args-$(CONFIG_HAVE_STATIC_CALL_INLINE) += --static-call +objtool-args-$(CONFIG_HAVE_UACCESS_VALIDATION) += --uaccess +objtool-args-$(CONFIG_GCOV_KERNEL) += --no-unreachable + +objtool-args = $(objtool-args-y) \ $(if $(delay-objtool), --link) \ - $(if $(part-of-module), --module) \ - $(if $(CONFIG_GCOV_KERNEL), --no-unreachable) + $(if $(part-of-module), --module) delay-objtool := $(or $(CONFIG_LTO_CLANG),$(CONFIG_X86_KERNEL_IBT)) -cmd_objtool = $(if $(objtool-enabled), ; $(objtool) $(objtool_args) $@) +cmd_objtool = $(if $(objtool-enabled), ; $(objtool) $(objtool-args) $@) cmd_gen_objtooldep = $(if $(objtool-enabled), { echo ; echo '$@: $$(wildcard $(objtool))' ; } >> $(dot-target).cmd) endif # CONFIG_OBJTOOL diff --git a/scripts/Makefile.modfinal b/scripts/Makefile.modfinal index 9a1fa6aa30fe..25bedd83644b 100644 --- a/scripts/Makefile.modfinal +++ b/scripts/Makefile.modfinal @@ -57,7 +57,7 @@ if_changed_except = $(if $(call newer_prereqs_except,$(2))$(cmd-check), \ printf '%s\n' 'cmd_$@ := $(make-cmd)' > $(dot-target).cmd, @:) # Re-generate module BTFs if either module's .ko or vmlinux changed -$(modules): %.ko: %.o %.mod.o scripts/module.lds $(if $(KBUILD_BUILTIN),vmlinux) FORCE +$(modules): %.ko: %.o %.mod.o scripts/module.lds $(and $(CONFIG_DEBUG_INFO_BTF_MODULES),$(KBUILD_BUILTIN),vmlinux) FORCE +$(call if_changed_except,ld_ko_o,vmlinux) ifdef CONFIG_DEBUG_INFO_BTF_MODULES +$(if $(newer-prereqs),$(call cmd,btf_ko)) diff --git a/scripts/Makefile.modpost b/scripts/Makefile.modpost index 911606496341..7740ce3b29e8 100644 --- a/scripts/Makefile.modpost +++ b/scripts/Makefile.modpost @@ -32,49 +32,58 @@ # Step 4 is solely used to allow module versioning in external modules, # where the CRC of each module is retrieved from the Module.symvers file. -# KBUILD_MODPOST_NOFINAL can be set to skip the final link of modules. -# This is solely useful to speed up test compiles - PHONY := __modpost __modpost: include include/config/auto.conf include $(srctree)/scripts/Kbuild.include -MODPOST = scripts/mod/modpost \ +modpost-args = \ $(if $(CONFIG_MODVERSIONS),-m) \ $(if $(CONFIG_MODULE_SRCVERSION_ALL),-a) \ $(if $(CONFIG_SECTION_MISMATCH_WARN_ONLY),,-E) \ + $(if $(KBUILD_NSDEPS),-d $(MODULES_NSDEPS)) \ + $(if $(CONFIG_MODULE_ALLOW_MISSING_NAMESPACE_IMPORTS)$(KBUILD_NSDEPS),-N) \ -o $@ -ifdef MODPOST_VMLINUX - -quiet_cmd_modpost = MODPOST $@ - cmd_modpost = $(MODPOST) $< - -vmlinux.symvers: vmlinux.o - $(call cmd,modpost) - -__modpost: vmlinux.symvers - -else +# 'make -i -k' ignores compile errors, and builds as many modules as possible. +ifneq ($(findstring i,$(filter-out --%,$(MAKEFLAGS))),) +modpost-args += -n +endif ifeq ($(KBUILD_EXTMOD),) -input-symdump := vmlinux.symvers -output-symdump := modules-only.symvers - -quiet_cmd_cat = GEN $@ - cmd_cat = cat $(real-prereqs) > $@ +# Generate the list of in-tree objects in vmlinux +# --------------------------------------------------------------------------- -ifneq ($(wildcard vmlinux.symvers),) - -__modpost: Module.symvers -Module.symvers: vmlinux.symvers modules-only.symvers FORCE - $(call if_changed,cat) - -targets += Module.symvers +# This is used to retrieve symbol versions generated by genksyms. +ifdef CONFIG_MODVERSIONS +vmlinux.symvers Module.symvers: .vmlinux.objs +endif +# Ignore libgcc.a +# Some architectures do '$(CC) --print-libgcc-file-name' to borrow libgcc.a +# from the toolchain, but there is no EXPORT_SYMBOL in it. + +quiet_cmd_vmlinux_objs = GEN $@ + cmd_vmlinux_objs = \ + for f in $(real-prereqs); do \ + case $${f} in \ + *libgcc.a) ;; \ + *) $(AR) t $${f} ;; \ + esac \ + done > $@ + +targets += .vmlinux.objs +.vmlinux.objs: vmlinux.a $(KBUILD_VMLINUX_LIBS) FORCE + $(call if_changed,vmlinux_objs) + +vmlinux.o-if-present := $(wildcard vmlinux.o) +output-symdump := vmlinux.symvers + +ifdef KBUILD_MODULES +output-symdump := $(if $(vmlinux.o-if-present), Module.symvers, modules-only.symvers) +missing-input := $(filter-out $(vmlinux.o-if-present),vmlinux.o) endif else @@ -86,54 +95,37 @@ src := $(obj) # Include the module's Makefile to find KBUILD_EXTRA_SYMBOLS include $(or $(wildcard $(src)/Kbuild), $(src)/Makefile) -# modpost option for external modules -MODPOST += -e - -input-symdump := Module.symvers $(KBUILD_EXTRA_SYMBOLS) +module.symvers-if-present := $(wildcard Module.symvers) output-symdump := $(KBUILD_EXTMOD)/Module.symvers +missing-input := $(filter-out $(module.symvers-if-present), Module.symvers) -endif - -existing-input-symdump := $(wildcard $(input-symdump)) +modpost-args += -e $(addprefix -i ,$(module.symvers-if-present) $(KBUILD_EXTRA_SYMBOLS)) -# modpost options for modules (both in-kernel and external) -MODPOST += \ - $(addprefix -i ,$(existing-input-symdump)) \ - $(if $(KBUILD_NSDEPS),-d $(MODULES_NSDEPS)) \ - $(if $(CONFIG_MODULE_ALLOW_MISSING_NAMESPACE_IMPORTS)$(KBUILD_NSDEPS),-N) +endif # ($(KBUILD_EXTMOD),) -# 'make -i -k' ignores compile errors, and builds as many modules as possible. -ifneq ($(findstring i,$(filter-out --%,$(MAKEFLAGS))),) -MODPOST += -n +ifneq ($(KBUILD_MODPOST_WARN)$(missing-input),) +modpost-args += -w endif -# Clear VPATH to not search for *.symvers in $(srctree). Check only $(objtree). -VPATH := -$(input-symdump): - @echo >&2 'WARNING: Symbol version dump "$@" is missing.' - @echo >&2 ' Modules may not have dependencies or modversions.' - @echo >&2 ' You may get many unresolved symbol warnings.' +modorder-if-needed := $(if $(KBUILD_MODULES), $(MODORDER)) -# KBUILD_MODPOST_WARN can be set to avoid error out in case of undefined symbols -ifneq ($(KBUILD_MODPOST_WARN)$(filter-out $(existing-input-symdump), $(input-symdump)),) -MODPOST += -w -endif +MODPOST = scripts/mod/modpost # Read out modules.order to pass in modpost. # Otherwise, allmodconfig would fail with "Argument list too long". quiet_cmd_modpost = MODPOST $@ - cmd_modpost = sed 's/ko$$/o/' $< | $(MODPOST) -T - - -$(output-symdump): $(MODORDER) $(input-symdump) FORCE - $(call if_changed,modpost) + cmd_modpost = \ + $(if $(missing-input), \ + echo >&2 "WARNING: $(missing-input) is missing."; \ + echo >&2 " Modules may not have dependencies or modversions."; \ + echo >&2 " You may get many unresolved symbol warnings.";) \ + sed 's/ko$$/o/' $(or $(modorder-if-needed), /dev/null) | $(MODPOST) $(modpost-args) $(vmlinux.o-if-present) -T - targets += $(output-symdump) +$(output-symdump): $(modorder-if-needed) $(vmlinux.o-if-present) $(moudle.symvers-if-present) $(MODPOST) FORCE + $(call if_changed,modpost) __modpost: $(output-symdump) -ifneq ($(KBUILD_MODPOST_NOFINAL),1) - $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modfinal -endif - PHONY += FORCE FORCE: @@ -141,6 +133,4 @@ existing-targets := $(wildcard $(sort $(targets))) -include $(foreach f,$(existing-targets),$(dir $(f)).$(notdir $(f)).cmd) -endif - .PHONY: $(PHONY) diff --git a/scripts/Makefile.package b/scripts/Makefile.package index 5017f6b2da80..8bbcced67c22 100644 --- a/scripts/Makefile.package +++ b/scripts/Makefile.package @@ -29,7 +29,10 @@ KDEB_SOURCENAME ?= linux-upstream KBUILD_PKG_ROOTCMD ?="fakeroot -u" export KDEB_SOURCENAME # Include only those top-level files that are needed by make, plus the GPL copy -TAR_CONTENT := $(KBUILD_ALLDIRS) .config .scmversion Makefile \ +TAR_CONTENT := Documentation LICENSES arch block certs crypto drivers fs \ + include init io_uring ipc kernel lib mm net samples scripts \ + security sound tools usr virt \ + .config .scmversion Makefile \ Kbuild Kconfig COPYING $(wildcard localversion*) MKSPEC := $(srctree)/scripts/package/mkspec diff --git a/scripts/Makefile.vmlinux b/scripts/Makefile.vmlinux index 7a63abf22399..49946cb96844 100644 --- a/scripts/Makefile.vmlinux +++ b/scripts/Makefile.vmlinux @@ -1,18 +1,37 @@ # SPDX-License-Identifier: GPL-2.0-only +PHONY := __default +__default: vmlinux + include include/config/auto.conf include $(srctree)/scripts/Kbuild.include # for c_flags include $(srctree)/scripts/Makefile.lib +targets := + quiet_cmd_cc_o_c = CC $@ cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< %.o: %.c FORCE $(call if_changed_dep,cc_o_c) -targets := $(MAKECMDGOALS) +ifdef CONFIG_MODULES +targets += .vmlinux.export.o +vmlinux: .vmlinux.export.o +endif + +ARCH_POSTLINK := $(wildcard $(srctree)/arch/$(SRCARCH)/Makefile.postlink) + +# Final link of vmlinux with optional arch pass after final link +cmd_link_vmlinux = \ + $< "$(LD)" "$(KBUILD_LDFLAGS)" "$(LDFLAGS_vmlinux)"; \ + $(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true) + +targets += vmlinux +vmlinux: scripts/link-vmlinux.sh vmlinux.o $(KBUILD_LDS) FORCE + +$(call if_changed_dep,link_vmlinux) # Add FORCE to the prequisites of a target to force it to be always rebuilt. # --------------------------------------------------------------------------- diff --git a/scripts/Makefile.vmlinux_o b/scripts/Makefile.vmlinux_o index 84019814f33f..0edfdb40364b 100644 --- a/scripts/Makefile.vmlinux_o +++ b/scripts/Makefile.vmlinux_o @@ -1,7 +1,7 @@ # SPDX-License-Identifier: GPL-2.0-only PHONY := __default -__default: vmlinux.o +__default: vmlinux.o modules.builtin.modinfo modules.builtin include include/config/auto.conf include $(srctree)/scripts/Kbuild.include @@ -18,7 +18,7 @@ quiet_cmd_gen_initcalls_lds = GEN $@ $(PERL) $(real-prereqs) > $@ .tmp_initcalls.lds: $(srctree)/scripts/generate_initcall_order.pl \ - $(KBUILD_VMLINUX_OBJS) $(KBUILD_VMLINUX_LIBS) FORCE + vmlinux.a $(KBUILD_VMLINUX_LIBS) FORCE $(call if_changed,gen_initcalls_lds) targets := .tmp_initcalls.lds @@ -35,18 +35,11 @@ endif objtool-enabled := $(or $(delay-objtool),$(CONFIG_NOINSTR_VALIDATION)) -# Reuse objtool_args defined in scripts/Makefile.lib if LTO or IBT is enabled. -# -# Add some more flags as needed. -# --no-unreachable and --link might be added twice, but it is fine. -# -# Expand objtool_args to a simple variable to avoid circular reference. +vmlinux-objtool-args-$(delay-objtool) += $(objtool-args-y) +vmlinux-objtool-args-$(CONFIG_GCOV_KERNEL) += --no-unreachable +vmlinux-objtool-args-$(CONFIG_NOINSTR_VALIDATION) += --noinstr $(if $(CONFIG_CPU_UNRET_ENTRY), --unret) -objtool_args := \ - $(if $(delay-objtool),$(objtool_args)) \ - $(if $(CONFIG_NOINSTR_VALIDATION), --noinstr $(if $(CONFIG_CPU_UNRET_ENTRY), --unret)) \ - $(if $(CONFIG_GCOV_KERNEL), --no-unreachable) \ - --link +objtool-args = $(vmlinux-objtool-args-y) --link # Link of vmlinux.o used for section mismatch analysis # --------------------------------------------------------------------------- @@ -55,7 +48,7 @@ quiet_cmd_ld_vmlinux.o = LD $@ cmd_ld_vmlinux.o = \ $(LD) ${KBUILD_LDFLAGS} -r -o $@ \ $(addprefix -T , $(initcalls-lds)) \ - --whole-archive $(KBUILD_VMLINUX_OBJS) --no-whole-archive \ + --whole-archive vmlinux.a --no-whole-archive \ --start-group $(KBUILD_VMLINUX_LIBS) --end-group \ $(cmd_objtool) @@ -64,11 +57,35 @@ define rule_ld_vmlinux.o $(call cmd,gen_objtooldep) endef -vmlinux.o: $(initcalls-lds) $(KBUILD_VMLINUX_OBJS) $(KBUILD_VMLINUX_LIBS) FORCE +vmlinux.o: $(initcalls-lds) vmlinux.a $(KBUILD_VMLINUX_LIBS) FORCE $(call if_changed_rule,ld_vmlinux.o) targets += vmlinux.o +# module.builtin.modinfo +# --------------------------------------------------------------------------- + +OBJCOPYFLAGS_modules.builtin.modinfo := -j .modinfo -O binary + +targets += modules.builtin.modinfo +modules.builtin.modinfo: vmlinux.o FORCE + $(call if_changed,objcopy) + +# module.builtin +# --------------------------------------------------------------------------- + +# The second line aids cases where multiple modules share the same object. + +quiet_cmd_modules_builtin = GEN $@ + cmd_modules_builtin = \ + tr '\0' '\n' < $< | \ + sed -n 's/^[[:alnum:]:_]*\.file=//p' | \ + tr ' ' '\n' | uniq | sed -e 's:^:kernel/:' -e 's/$$/.ko/' > $@ + +targets += modules.builtin +modules.builtin: modules.builtin.modinfo FORCE + $(call if_changed,modules_builtin) + # Add FORCE to the prequisites of a target to force it to be always rebuilt. # --------------------------------------------------------------------------- diff --git a/scripts/asn1_compiler.c b/scripts/asn1_compiler.c index adabd4145264..71d4a7c87900 100644 --- a/scripts/asn1_compiler.c +++ b/scripts/asn1_compiler.c @@ -832,7 +832,7 @@ static void parse(void) static struct element *element_list; -static struct element *alloc_elem(struct token *type) +static struct element *alloc_elem(void) { struct element *e = calloc(1, sizeof(*e)); if (!e) { @@ -860,7 +860,7 @@ static struct element *parse_type(struct token **_cursor, struct token *end, char *p; int labelled = 0, implicit = 0; - top = element = alloc_elem(cursor); + top = element = alloc_elem(); element->class = ASN1_UNIV; element->method = ASN1_PRIM; element->tag = token_to_tag[cursor->token_type]; @@ -939,7 +939,7 @@ static struct element *parse_type(struct token **_cursor, struct token *end, if (!implicit) element->method |= ASN1_CONS; element->compound = implicit ? TAG_OVERRIDE : SEQUENCE; - element->children = alloc_elem(cursor); + element->children = alloc_elem(); element = element->children; element->class = ASN1_UNIV; element->method = ASN1_PRIM; diff --git a/scripts/atomic/check-atomics.sh b/scripts/atomic/check-atomics.sh deleted file mode 100755 index 0e7bab3eb0d1..000000000000 --- a/scripts/atomic/check-atomics.sh +++ /dev/null @@ -1,33 +0,0 @@ -#!/bin/sh -# SPDX-License-Identifier: GPL-2.0 -# -# Check if atomic headers are up-to-date - -ATOMICDIR=$(dirname $0) -ATOMICTBL=${ATOMICDIR}/atomics.tbl -LINUXDIR=${ATOMICDIR}/../.. - -echo '' | sha1sum - > /dev/null 2>&1 -if [ $? -ne 0 ]; then - printf "sha1sum not available, skipping atomic header checks.\n" - exit 0 -fi - -cat <<EOF | -linux/atomic/atomic-instrumented.h -linux/atomic/atomic-long.h -linux/atomic/atomic-arch-fallback.h -EOF -while read header; do - OLDSUM="$(tail -n 1 ${LINUXDIR}/include/${header})" - OLDSUM="${OLDSUM#// }" - - NEWSUM="$(sed '$d' ${LINUXDIR}/include/${header} | sha1sum)" - NEWSUM="${NEWSUM%% *}" - - if [ "${OLDSUM}" != "${NEWSUM}" ]; then - printf "warning: generated include/${header} has been modified.\n" - fi -done - -exit 0 diff --git a/scripts/check-local-export b/scripts/check-local-export index 6ccc2f467416..f90b5a9c67b3 100755 --- a/scripts/check-local-export +++ b/scripts/check-local-export @@ -1,25 +1,14 @@ -#!/usr/bin/env bash +#!/bin/sh # SPDX-License-Identifier: GPL-2.0-only # # Copyright (C) 2022 Masahiro Yamada <masahiroy@kernel.org> +# Copyright (C) 2022 Owen Rafferty <owen@owenrafferty.com> # # Exit with error if a local exported symbol is found. # EXPORT_SYMBOL should be used for global symbols. set -e - -# catch errors from ${NM} -set -o pipefail - -# Run the last element of a pipeline in the current shell. -# Without this, the while-loop would be executed in a subshell, and -# the changes made to 'symbol_types' and 'export_symbols' would be lost. -shopt -s lastpipe - -declare -A symbol_types -declare -a export_symbols - -exit_code=0 +pid=$$ # If there is no symbol in the object, ${NM} (both GNU nm and llvm-nm) shows # 'no symbols' diagnostic (but exits with 0). It is harmless and hidden by @@ -29,43 +18,53 @@ exit_code=0 # TODO: # Use --quiet instead of 2>/dev/null when we upgrade the minimum version of # binutils to 2.37, llvm to 13.0.0. -# Then, the following line will be really simple: -# ${NM} --quiet ${1} | +# Then, the following line will be simpler: +# { ${NM} --quiet ${1} || kill 0; } | + +{ ${NM} ${1} 2>/dev/null || { echo "${0}: ${NM} failed" >&2; kill $pid; } } | +${AWK} -v "file=${1}" ' +BEGIN { + i = 0 +} + +# Skip the line if the number of fields is less than 3. +# +# case 1) +# For undefined symbols, the first field (value) is empty. +# The outout looks like this: +# " U _printk" +# It is unneeded to record undefined symbols. +# +# case 2) +# For Clang LTO, llvm-nm outputs a line with type t but empty name: +# "---------------- t" +!length($3) { + next +} -{ ${NM} ${1} 2>/dev/null || { echo "${0}: ${NM} failed" >&2; false; } } | -while read value type name -do - # Skip the line if the number of fields is less than 3. - # - # case 1) - # For undefined symbols, the first field (value) is empty. - # The outout looks like this: - # " U _printk" - # It is unneeded to record undefined symbols. - # - # case 2) - # For Clang LTO, llvm-nm outputs a line with type 't' but empty name: - # "---------------- t" - if [[ -z ${name} ]]; then - continue - fi +# save (name, type) in the associative array +{ symbol_types[$3]=$2 } - # save (name, type) in the associative array - symbol_types[${name}]=${type} +# append the exported symbol to the array +($3 ~ /^__ksymtab_/) { + export_symbols[i] = $3 + sub(/^__ksymtab_/, "", export_symbols[i]) + i++ +} - # append the exported symbol to the array - if [[ ${name} == __ksymtab_* ]]; then - export_symbols+=(${name#__ksymtab_}) - fi -done +END { + exit_code = 0 + for (j = 0; j < i; ++j) { + name = export_symbols[j] + # nm(3) says "If lowercase, the symbol is usually local" + if (symbol_types[name] ~ /[a-z]/) { + printf "%s: error: local symbol %s was exported\n", + file, name | "cat 1>&2" + exit_code = 1 + } + } -for name in "${export_symbols[@]}" -do - # nm(3) says "If lowercase, the symbol is usually local" - if [[ ${symbol_types[$name]} =~ [a-z] ]]; then - echo "$@: error: local symbol '${name}' was exported" >&2 - exit_code=1 - fi -done + exit exit_code +}' -exit ${exit_code} +exit $? diff --git a/scripts/clang-tools/gen_compile_commands.py b/scripts/clang-tools/gen_compile_commands.py index 47da25b3ba7d..d800b2c0af97 100755 --- a/scripts/clang-tools/gen_compile_commands.py +++ b/scripts/clang-tools/gen_compile_commands.py @@ -109,20 +109,6 @@ def to_cmdfile(path): return os.path.join(dir, '.' + base + '.cmd') -def cmdfiles_for_o(obj): - """Generate the iterator of .cmd files associated with the object - - Yield the .cmd file used to build the given object - - Args: - obj: The object path - - Yields: - The path to .cmd file - """ - yield to_cmdfile(obj) - - def cmdfiles_for_a(archive, ar): """Generate the iterator of .cmd files associated with the archive. @@ -211,13 +197,10 @@ def main(): for path in paths: # If 'path' is a directory, handle all .cmd files under it. # Otherwise, handle .cmd files associated with the file. - # Most of built-in objects are linked via archives (built-in.a or lib.a) - # but some objects are linked to vmlinux directly. + # built-in objects are linked via vmlinux.a # Modules are listed in modules.order. if os.path.isdir(path): cmdfiles = cmdfiles_in_dir(path) - elif path.endswith('.o'): - cmdfiles = cmdfiles_for_o(path) elif path.endswith('.a'): cmdfiles = cmdfiles_for_a(path, ar) elif path.endswith('modules.order'): diff --git a/scripts/head-object-list.txt b/scripts/head-object-list.txt new file mode 100644 index 000000000000..b16326a92c45 --- /dev/null +++ b/scripts/head-object-list.txt @@ -0,0 +1,53 @@ +# Head objects +# +# The objects listed here are placed at the head of vmlinux. A typical use-case +# is an object that contains the entry point. This is kept for compatibility +# with head-y, which Kbuild used to support. +# +# A counter approach is to control the section placement by the linker script. +# The code marked as __HEAD goes into the ".head.text" section, which is placed +# before the normal ".text" section. +# +# If you can achieve the correct code ordering by linker script, please delete +# the entry from this file. +# +arch/alpha/kernel/head.o +arch/arc/kernel/head.o +arch/arm/kernel/head-nommu.o +arch/arm/kernel/head.o +arch/arm64/kernel/head.o +arch/csky/kernel/head.o +arch/hexagon/kernel/head.o +arch/ia64/kernel/head.o +arch/loongarch/kernel/head.o +arch/m68k/68000/head.o +arch/m68k/coldfire/head.o +arch/m68k/kernel/head.o +arch/m68k/kernel/sun3-head.o +arch/microblaze/kernel/head.o +arch/mips/kernel/head.o +arch/nios2/kernel/head.o +arch/openrisc/kernel/head.o +arch/parisc/kernel/head.o +arch/powerpc/kernel/head_40x.o +arch/powerpc/kernel/head_44x.o +arch/powerpc/kernel/head_64.o +arch/powerpc/kernel/head_8xx.o +arch/powerpc/kernel/head_85xx.o +arch/powerpc/kernel/head_book3s_32.o +arch/powerpc/kernel/entry_64.o +arch/powerpc/kernel/fpu.o +arch/powerpc/kernel/vector.o +arch/powerpc/kernel/prom_init.o +arch/riscv/kernel/head.o +arch/s390/kernel/head64.o +arch/sh/kernel/head_32.o +arch/sparc/kernel/head_32.o +arch/sparc/kernel/head_64.o +arch/x86/kernel/head_32.o +arch/x86/kernel/head_64.o +arch/x86/kernel/head32.o +arch/x86/kernel/head64.o +arch/x86/kernel/ebda.o +arch/x86/kernel/platform-quirks.o +arch/xtensa/kernel/head.o diff --git a/scripts/kallsyms.c b/scripts/kallsyms.c index ff5e7810e437..03fa07ad45d9 100644 --- a/scripts/kallsyms.c +++ b/scripts/kallsyms.c @@ -18,6 +18,7 @@ * */ +#include <getopt.h> #include <stdbool.h> #include <stdio.h> #include <stdlib.h> @@ -87,7 +88,7 @@ static unsigned char best_table_len[256]; static void usage(void) { fprintf(stderr, "Usage: kallsyms [--all-symbols] [--absolute-percpu] " - "[--base-relative] < in.map > out.S\n"); + "[--base-relative] in.map > out.S\n"); exit(1); } @@ -123,9 +124,6 @@ static bool is_ignored_symbol(const char *name, char type) /* Symbol names that begin with the following are ignored.*/ static const char * const ignored_prefixes[] = { - "$", /* local symbols for ARM, MIPS, etc. */ - ".L", /* local labels, .LBB,.Ltmpxxx,.L__unnamed_xx,.LASANPC, etc. */ - "__crc_", /* modversions */ "__efistub_", /* arm64 EFI stub namespace */ "__kvm_nvhe_$", /* arm64 local symbols in non-VHE KVM namespace */ "__kvm_nvhe_.L", /* arm64 local symbols in non-VHE KVM namespace */ @@ -330,12 +328,19 @@ static void shrink_table(void) } } -static void read_map(FILE *in) +static void read_map(const char *in) { + FILE *fp; struct sym_entry *sym; - while (!feof(in)) { - sym = read_symbol(in); + fp = fopen(in, "r"); + if (!fp) { + perror(in); + exit(1); + } + + while (!feof(fp)) { + sym = read_symbol(fp); if (!sym) continue; @@ -346,12 +351,15 @@ static void read_map(FILE *in) table = realloc(table, sizeof(*table) * table_size); if (!table) { fprintf(stderr, "out of memory\n"); + fclose(fp); exit (1); } } table[table_cnt++] = sym; } + + fclose(fp); } static void output_label(const char *label) @@ -805,22 +813,26 @@ static void record_relative_base(void) int main(int argc, char **argv) { - if (argc >= 2) { - int i; - for (i = 1; i < argc; i++) { - if(strcmp(argv[i], "--all-symbols") == 0) - all_symbols = 1; - else if (strcmp(argv[i], "--absolute-percpu") == 0) - absolute_percpu = 1; - else if (strcmp(argv[i], "--base-relative") == 0) - base_relative = 1; - else - usage(); - } - } else if (argc != 1) + while (1) { + static struct option long_options[] = { + {"all-symbols", no_argument, &all_symbols, 1}, + {"absolute-percpu", no_argument, &absolute_percpu, 1}, + {"base-relative", no_argument, &base_relative, 1}, + {}, + }; + + int c = getopt_long(argc, argv, "", long_options, NULL); + + if (c == -1) + break; + if (c != 0) + usage(); + } + + if (optind >= argc) usage(); - read_map(stdin); + read_map(argv[optind]); shrink_table(); if (absolute_percpu) make_percpus_absolute(); diff --git a/scripts/kconfig/conf.c b/scripts/kconfig/conf.c index 4178065ca27f..33d19e419908 100644 --- a/scripts/kconfig/conf.c +++ b/scripts/kconfig/conf.c @@ -551,7 +551,7 @@ static int conf_choice(struct menu *menu) print_help(child); continue; } - sym_set_choice_value(sym, child->sym); + sym_set_tristate_value(child->sym, yes); for (child = child->list; child; child = child->next) { indent += 2; conf(child); diff --git a/scripts/kconfig/lkc.h b/scripts/kconfig/lkc.h index c396aa104090..6ac2eabe109d 100644 --- a/scripts/kconfig/lkc.h +++ b/scripts/kconfig/lkc.h @@ -123,11 +123,6 @@ static inline struct symbol *sym_get_choice_value(struct symbol *sym) return (struct symbol *)sym->curr.val; } -static inline bool sym_set_choice_value(struct symbol *ch, struct symbol *chval) -{ - return sym_set_tristate_value(chval, yes); -} - static inline bool sym_is_choice(struct symbol *sym) { return sym->flags & SYMBOL_CHOICE ? true : false; diff --git a/scripts/link-vmlinux.sh b/scripts/link-vmlinux.sh index eecc1863e556..918470d768e9 100755 --- a/scripts/link-vmlinux.sh +++ b/scripts/link-vmlinux.sh @@ -3,17 +3,15 @@ # # link vmlinux # -# vmlinux is linked from the objects selected by $(KBUILD_VMLINUX_OBJS) and -# $(KBUILD_VMLINUX_LIBS). Most are built-in.a files from top-level directories -# in the kernel tree, others are specified in arch/$(ARCH)/Makefile. +# vmlinux is linked from the objects in vmlinux.a and $(KBUILD_VMLINUX_LIBS). +# vmlinux.a contains objects that are linked unconditionally. # $(KBUILD_VMLINUX_LIBS) are archives which are linked conditionally # (not within --whole-archive), and do not require symbol indexes added. # # vmlinux # ^ # | -# +--< $(KBUILD_VMLINUX_OBJS) -# | +--< init/built-in.a drivers/built-in.a mm/built-in.a + more +# +--< vmlinux.a # | # +--< $(KBUILD_VMLINUX_LIBS) # | +--< lib/lib.a + more @@ -67,7 +65,7 @@ vmlinux_link() objs=vmlinux.o libs= else - objs="${KBUILD_VMLINUX_OBJS}" + objs=vmlinux.a libs="${KBUILD_VMLINUX_LIBS}" fi @@ -75,6 +73,8 @@ vmlinux_link() objs="${objs} .vmlinux.export.o" fi + objs="${objs} init/version-timestamp.o" + if [ "${SRCARCH}" = "um" ]; then wl=-Wl, ld="${CC}" @@ -157,7 +157,7 @@ kallsyms() fi info KSYMS ${2} - ${NM} -n ${1} | scripts/kallsyms ${kallsymopt} > ${2} + scripts/kallsyms ${kallsymopt} ${1} > ${2} } # Perform one step in kallsyms generation, including temporary linking of @@ -170,7 +170,8 @@ kallsyms_step() kallsyms_S=${kallsyms_vmlinux}.S vmlinux_link ${kallsyms_vmlinux} "${kallsymso_prev}" ${btf_vmlinux_bin_o} - kallsyms ${kallsyms_vmlinux} ${kallsyms_S} + mksysmap ${kallsyms_vmlinux} ${kallsyms_vmlinux}.syms + kallsyms ${kallsyms_vmlinux}.syms ${kallsyms_S} info AS ${kallsyms_S} ${CC} ${NOSTDINC_FLAGS} ${LINUXINCLUDE} ${KBUILD_CPPFLAGS} \ @@ -182,6 +183,7 @@ kallsyms_step() # See mksymap for additional details mksysmap() { + info NM ${2} ${CONFIG_SHELL} "${srctree}/scripts/mksysmap" ${1} ${2} } @@ -197,8 +199,6 @@ cleanup() rm -f System.map rm -f vmlinux rm -f vmlinux.map - rm -f .vmlinux.objs - rm -f .vmlinux.export.c } # Use "make V=1" to debug this script @@ -213,52 +213,7 @@ if [ "$1" = "clean" ]; then exit 0 fi -# Update version -info GEN .version -if [ -r .version ]; then - VERSION=$(expr 0$(cat .version) + 1) - echo $VERSION > .version -else - rm -f .version - echo 1 > .version -fi; - -# final build of init/ -${MAKE} -f "${srctree}/scripts/Makefile.build" obj=init need-builtin=1 - -#link vmlinux.o -${MAKE} -f "${srctree}/scripts/Makefile.vmlinux_o" - -# Generate the list of in-tree objects in vmlinux -# -# This is used to retrieve symbol versions generated by genksyms. -for f in ${KBUILD_VMLINUX_OBJS} ${KBUILD_VMLINUX_LIBS}; do - case ${f} in - *libgcc.a) - # Some architectures do '$(CC) --print-libgcc-file-name' to - # borrow libgcc.a from the toolchain. - # There is no EXPORT_SYMBOL in external objects. Ignore this. - ;; - *.a) - ${AR} t ${f} ;; - *) - echo ${f} ;; - esac -done > .vmlinux.objs - -# modpost vmlinux.o to check for section mismatches -${MAKE} -f "${srctree}/scripts/Makefile.modpost" MODPOST_VMLINUX=1 - -info MODINFO modules.builtin.modinfo -${OBJCOPY} -j .modinfo -O binary vmlinux.o modules.builtin.modinfo -info GEN modules.builtin -# The second line aids cases where multiple modules share the same object. -tr '\0' '\n' < modules.builtin.modinfo | sed -n 's/^[[:alnum:]:_]*\.file=//p' | - tr ' ' '\n' | uniq | sed -e 's:^:kernel/:' -e 's/$/.ko/' > modules.builtin - -if is_enabled CONFIG_MODULES; then - ${MAKE} -f "${srctree}/scripts/Makefile.vmlinux" .vmlinux.export.o -fi +${MAKE} -f "${srctree}/scripts/Makefile.build" obj=init init/version-timestamp.o btf_vmlinux_bin_o="" if is_enabled CONFIG_DEBUG_INFO_BTF; then @@ -318,7 +273,6 @@ if is_enabled CONFIG_DEBUG_INFO_BTF && is_enabled CONFIG_BPF; then ${RESOLVE_BTFIDS} vmlinux fi -info SYSMAP System.map mksysmap vmlinux System.map if is_enabled CONFIG_BUILDTIME_TABLE_SORT; then @@ -331,9 +285,7 @@ fi # step a (see comment above) if is_enabled CONFIG_KALLSYMS; then - mksysmap ${kallsyms_vmlinux} .tmp_System.map - - if ! cmp -s System.map .tmp_System.map; then + if ! cmp -s System.map ${kallsyms_vmlinux}.syms; then echo >&2 Inconsistent kallsyms data echo >&2 Try "make KALLSYMS_EXTRA_PASS=1" as a workaround exit 1 diff --git a/scripts/mkcompile_h b/scripts/mkcompile_h index ca40a5258c87..2596f78e52ef 100755 --- a/scripts/mkcompile_h +++ b/scripts/mkcompile_h @@ -1,33 +1,10 @@ #!/bin/sh # SPDX-License-Identifier: GPL-2.0 -TARGET=$1 -ARCH=$2 -SMP=$3 -PREEMPT=$4 -PREEMPT_DYNAMIC=$5 -PREEMPT_RT=$6 -CC_VERSION="$7" -LD=$8 +UTS_MACHINE=$1 +CC_VERSION="$2" +LD=$3 -# Do not expand names -set -f - -# Fix the language to get consistent output -LC_ALL=C -export LC_ALL - -if [ -z "$KBUILD_BUILD_VERSION" ]; then - VERSION=$(cat .version 2>/dev/null || echo 1) -else - VERSION=$KBUILD_BUILD_VERSION -fi - -if [ -z "$KBUILD_BUILD_TIMESTAMP" ]; then - TIMESTAMP=`date` -else - TIMESTAMP=$KBUILD_BUILD_TIMESTAMP -fi if test -z "$KBUILD_BUILD_USER"; then LINUX_COMPILE_BY=$(whoami | sed 's/\\/\\\\/') else @@ -39,63 +16,12 @@ else LINUX_COMPILE_HOST=$KBUILD_BUILD_HOST fi -UTS_VERSION="#$VERSION" -CONFIG_FLAGS="" -if [ -n "$SMP" ] ; then CONFIG_FLAGS="SMP"; fi - -if [ -n "$PREEMPT_RT" ] ; then - CONFIG_FLAGS="$CONFIG_FLAGS PREEMPT_RT" -elif [ -n "$PREEMPT_DYNAMIC" ] ; then - CONFIG_FLAGS="$CONFIG_FLAGS PREEMPT_DYNAMIC" -elif [ -n "$PREEMPT" ] ; then - CONFIG_FLAGS="$CONFIG_FLAGS PREEMPT" -fi - -# Truncate to maximum length -UTS_LEN=64 -UTS_VERSION="$(echo $UTS_VERSION $CONFIG_FLAGS $TIMESTAMP | cut -b -$UTS_LEN)" - -# Generate a temporary compile.h +LD_VERSION=$(LC_ALL=C $LD -v | head -n1 | + sed -e 's/(compatible with [^)]*)//' -e 's/[[:space:]]*$//') -{ echo /\* This file is auto generated, version $VERSION \*/ - if [ -n "$CONFIG_FLAGS" ] ; then echo "/* $CONFIG_FLAGS */"; fi - - echo \#define UTS_MACHINE \"$ARCH\" - - echo \#define UTS_VERSION \"$UTS_VERSION\" - - printf '#define LINUX_COMPILE_BY "%s"\n' "$LINUX_COMPILE_BY" - echo \#define LINUX_COMPILE_HOST \"$LINUX_COMPILE_HOST\" - - LD_VERSION=$($LD -v | head -n1 | sed 's/(compatible with [^)]*)//' \ - | sed 's/[[:space:]]*$//') - printf '#define LINUX_COMPILER "%s"\n' "$CC_VERSION, $LD_VERSION" -} > .tmpcompile - -# Only replace the real compile.h if the new one is different, -# in order to preserve the timestamp and avoid unnecessary -# recompilations. -# We don't consider the file changed if only the date/time changed, -# unless KBUILD_BUILD_TIMESTAMP was explicitly set (e.g. for -# reproducible builds with that value referring to a commit timestamp). -# A kernel config change will increase the generation number, thus -# causing compile.h to be updated (including date/time) due to the -# changed comment in the -# first line. - -if [ -z "$KBUILD_BUILD_TIMESTAMP" ]; then - IGNORE_PATTERN="UTS_VERSION" -else - IGNORE_PATTERN="NOT_A_PATTERN_TO_BE_MATCHED" -fi - -if [ -r $TARGET ] && \ - grep -v $IGNORE_PATTERN $TARGET > .tmpver.1 && \ - grep -v $IGNORE_PATTERN .tmpcompile > .tmpver.2 && \ - cmp -s .tmpver.1 .tmpver.2; then - rm -f .tmpcompile -else - echo " UPD $TARGET" - mv -f .tmpcompile $TARGET -fi -rm -f .tmpver.1 .tmpver.2 +cat <<EOF +#define UTS_MACHINE "${UTS_MACHINE}" +#define LINUX_COMPILE_BY "${LINUX_COMPILE_BY}" +#define LINUX_COMPILE_HOST "${LINUX_COMPILE_HOST}" +#define LINUX_COMPILER "${CC_VERSION}, ${LD_VERSION}" +EOF diff --git a/scripts/mksysmap b/scripts/mksysmap index ad8bbc52267d..16a08b8ef2f8 100755 --- a/scripts/mksysmap +++ b/scripts/mksysmap @@ -37,8 +37,24 @@ # readprofile starts reading symbols when _stext is found, and # continue until it finds a symbol which is not either of 'T', 't', -# 'W' or 'w'. __crc_ are 'A' and placed in the middle -# so we just ignore them to let readprofile continue to work. -# (At least sparc64 has __crc_ in the middle). +# 'W' or 'w'. +# +# Ignored prefixes: +# $ - local symbols for ARM, MIPS, etc. +# .L - local labels, .LBB,.Ltmpxxx,.L__unnamed_xx,.LASANPC, etc. +# __crc_ - modversions +# __kstrtab_ - EXPORT_SYMBOL (symbol name) +# __kstrtabns_ - EXPORT_SYMBOL (namespace) +# +# Ignored symbols: +# L0 - for LoongArch? -$NM -n $1 | grep -v '\( [aNUw] \)\|\(__crc_\)\|\( \$[adt]\)\|\( \.L\)\|\( L0\)' > $2 +$NM -n $1 | grep -v \ + -e ' [aNUw] ' \ + -e ' \$' \ + -e ' \.L' \ + -e ' __crc_' \ + -e ' __kstrtab_' \ + -e ' __kstrtabns_' \ + -e ' L0$' \ +> $2 diff --git a/scripts/package/mkspec b/scripts/package/mkspec index 8fa7c5b8a1a1..c920c1b18e7a 100755 --- a/scripts/package/mkspec +++ b/scripts/package/mkspec @@ -88,10 +88,10 @@ $S mkdir -p %{buildroot}/boot %ifarch ia64 mkdir -p %{buildroot}/boot/efi - cp \$($MAKE image_name) %{buildroot}/boot/efi/vmlinuz-$KERNELRELEASE + cp \$($MAKE -s image_name) %{buildroot}/boot/efi/vmlinuz-$KERNELRELEASE ln -s efi/vmlinuz-$KERNELRELEASE %{buildroot}/boot/ %else - cp \$($MAKE image_name) %{buildroot}/boot/vmlinuz-$KERNELRELEASE + cp \$($MAKE -s image_name) %{buildroot}/boot/vmlinuz-$KERNELRELEASE %endif $M $MAKE %{?_smp_mflags} INSTALL_MOD_PATH=%{buildroot} modules_install $MAKE %{?_smp_mflags} INSTALL_HDR_PATH=%{buildroot}/usr headers_install |