From 4b950bb9ac0c7246dcf75060040577c3de60c166 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Sun, 28 Jul 2019 20:27:41 +0200 Subject: Kbuild: Handle PREEMPT_RT for version string and magic Update the build scripts and the version magic to reflect when CONFIG_PREEMPT_RT is enabled in the same way as CONFIG_PREEMPT is treated. The resulting version strings: Linux m 5.3.0-rc1+ #100 SMP Fri Jul 26 ... Linux m 5.3.0-rc1+ #101 SMP PREEMPT Fri Jul 26 ... Linux m 5.3.0-rc1+ #102 SMP PREEMPT_RT Fri Jul 26 ... The module vermagic: 5.3.0-rc1+ SMP mod_unload modversions 5.3.0-rc1+ SMP preempt mod_unload modversions 5.3.0-rc1+ SMP preempt_rt mod_unload modversions Signed-off-by: Thomas Gleixner Signed-off-by: Masahiro Yamada --- scripts/Makefile.modpost | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'scripts/Makefile.modpost') diff --git a/scripts/Makefile.modpost b/scripts/Makefile.modpost index 26e6574ecd08..e003350bc473 100644 --- a/scripts/Makefile.modpost +++ b/scripts/Makefile.modpost @@ -23,7 +23,7 @@ # 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) -- cgit v1.2.3 From f6545bec969358eace40419aff26a2a236e0b813 Mon Sep 17 00:00:00 2001 From: Masahiro Yamada Date: Wed, 31 Jul 2019 15:13:58 +0900 Subject: kbuild: add [M] marker for build log of *.mod.o This builds module objects, so [M] makes sense. Signed-off-by: Masahiro Yamada --- scripts/Makefile.modpost | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'scripts/Makefile.modpost') diff --git a/scripts/Makefile.modpost b/scripts/Makefile.modpost index e003350bc473..bf15818f6947 100644 --- a/scripts/Makefile.modpost +++ b/scripts/Makefile.modpost @@ -110,7 +110,7 @@ $(modules:.ko=.mod.c): modules-modpost # modname is set to make c_flags define KBUILD_MODNAME modname = $(notdir $(@:.mod.o=)) -quiet_cmd_cc_o_c = CC $@ +quiet_cmd_cc_o_c = CC [M] $@ cmd_cc_o_c = $(CC) $(c_flags) $(KBUILD_CFLAGS_MODULE) $(CFLAGS_MODULE) \ -c -o $@ $< -- cgit v1.2.3 From 10df063855822fcea3c0f51dbf534ad643d3cb1b Mon Sep 17 00:00:00 2001 From: Masahiro Yamada Date: Thu, 15 Aug 2019 01:06:22 +0900 Subject: kbuild: rebuild modules when module linker scripts are updated Currently, the timestamp of module linker scripts are not checked. Add them to the dependency of modules so they are correctly rebuilt. Signed-off-by: Masahiro Yamada --- Documentation/kbuild/makefiles.rst | 5 +++++ Makefile | 3 ++- arch/arm/Makefile | 2 +- arch/arm64/Makefile | 2 +- arch/ia64/Makefile | 2 +- arch/m68k/Makefile | 2 +- arch/parisc/Makefile | 2 +- arch/powerpc/Makefile | 2 +- arch/riscv/Makefile | 2 +- scripts/Makefile.modpost | 5 +++-- 10 files changed, 17 insertions(+), 10 deletions(-) (limited to 'scripts/Makefile.modpost') diff --git a/Documentation/kbuild/makefiles.rst b/Documentation/kbuild/makefiles.rst index 88c384da592e..68ed20ef37dd 100644 --- a/Documentation/kbuild/makefiles.rst +++ b/Documentation/kbuild/makefiles.rst @@ -993,6 +993,11 @@ When kbuild executes, the following steps are followed (roughly): The linker script with full path. Assigned by the top-level Makefile. + 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 diff --git a/Makefile b/Makefile index 68e7ac654f4c..9c524950f4b3 100644 --- a/Makefile +++ b/Makefile @@ -482,7 +482,8 @@ 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 := $(srctree)/scripts/module-common.lds KBUILD_LDFLAGS := GCC_PLUGINS_CFLAGS := CLANG_FLAGS := diff --git a/arch/arm/Makefile b/arch/arm/Makefile index c3624ca6c0bc..fbe50eec8f34 100644 --- a/arch/arm/Makefile +++ b/arch/arm/Makefile @@ -17,7 +17,7 @@ KBUILD_LDFLAGS_MODULE += --be8 endif ifeq ($(CONFIG_ARM_MODULE_PLTS),y) -KBUILD_LDFLAGS_MODULE += -T $(srctree)/arch/arm/kernel/module.lds +KBUILD_LDS_MODULE += $(srctree)/arch/arm/kernel/module.lds endif GZFLAGS :=-9 diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile index 61de992bbea3..d4ed1869e536 100644 --- a/arch/arm64/Makefile +++ b/arch/arm64/Makefile @@ -101,7 +101,7 @@ endif CHECKFLAGS += -D__aarch64__ ifeq ($(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/Makefile b/arch/ia64/Makefile index 171290f9f1de..5c3bcaee5980 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/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 += $(srctree)/arch/m68k/kernel/module.lds ifdef CONFIG_SUN3 LDFLAGS_vmlinux = -N diff --git a/arch/parisc/Makefile b/arch/parisc/Makefile index 3b77d729057f..36b834f1c933 100644 --- a/arch/parisc/Makefile +++ b/arch/parisc/Makefile @@ -60,7 +60,7 @@ KBUILD_CFLAGS += -DCC_USING_PATCHABLE_FUNCTION_ENTRY=1 \ -DFTRACE_PATCHABLE_FUNCTION_SIZE=$(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/Makefile b/arch/powerpc/Makefile index c345b79414a9..b2227855de20 100644 --- a/arch/powerpc/Makefile +++ b/arch/powerpc/Makefile @@ -67,7 +67,7 @@ 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/riscv/Makefile b/arch/riscv/Makefile index 7a117be8297c..426d989125a8 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 KBUILD_CFLAGS_MODULE += $(call cc-option,-mno-relax) diff --git a/scripts/Makefile.modpost b/scripts/Makefile.modpost index bf15818f6947..905db30d6622 100644 --- a/scripts/Makefile.modpost +++ b/scripts/Makefile.modpost @@ -126,10 +126,11 @@ quiet_cmd_ld_ko_o = LD [M] $@ cmd_ld_ko_o = \ $(LD) -r $(KBUILD_LDFLAGS) \ $(KBUILD_LDFLAGS_MODULE) $(LDFLAGS_MODULE) \ - -o $@ $(real-prereqs) ; \ + $(addprefix -T , $(KBUILD_LDS_MODULE)) \ + -o $@ $(filter %.o, $^); \ $(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true) -$(modules): %.ko :%.o %.mod.o FORCE +$(modules): %.ko :%.o %.mod.o $(KBUILD_LDS_MODULE) FORCE +$(call if_changed,ld_ko_o) targets += $(modules) -- cgit v1.2.3 From 9b9a3f20cbe0ba9269cde6fff9f9c69907e150cf Mon Sep 17 00:00:00 2001 From: Masahiro Yamada Date: Thu, 15 Aug 2019 01:06:23 +0900 Subject: kbuild: split final module linking out into Makefile.modfinal I think splitting the modpost and linking modules into separate Makefiles will be useful especially when more complex build steps come in. The main motivation of this commit is to integrate the proposed klp-convert feature cleanly. I moved the logging 'Building modules, stage 2.' to Makefile.modpost to avoid the code duplication although I do not know whether or not this message is needed in the first place. Signed-off-by: Masahiro Yamada --- Makefile | 2 -- scripts/Makefile.modfinal | 60 +++++++++++++++++++++++++++++++++++ scripts/Makefile.modpost | 79 +++++++---------------------------------------- 3 files changed, 71 insertions(+), 70 deletions(-) create mode 100644 scripts/Makefile.modfinal (limited to 'scripts/Makefile.modpost') diff --git a/Makefile b/Makefile index 9c524950f4b3..db2ddd53d557 100644 --- a/Makefile +++ b/Makefile @@ -1304,7 +1304,6 @@ 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 @@ -1624,7 +1623,6 @@ $(objtree)/Module.symvers: build-dirs := $(KBUILD_EXTMOD) PHONY += modules modules: descend $(objtree)/Module.symvers - @$(kecho) ' Building modules, stage 2.'; $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost PHONY += modules_install diff --git a/scripts/Makefile.modfinal b/scripts/Makefile.modfinal new file mode 100644 index 000000000000..c8875f62dd96 --- /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 is set to make c_flags define KBUILD_MODNAME +modname = $(notdir $(@:.mod.o=)) + +quiet_cmd_cc_o_c = CC [M] $@ + cmd_cc_o_c = $(CC) $(c_flags) $(KBUILD_CFLAGS_MODULE) $(CFLAGS_MODULE) \ + -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 905db30d6622..9800a3988f23 100644 --- a/scripts/Makefile.modpost +++ b/scripts/Makefile.modpost @@ -15,8 +15,6 @@ # 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: @@ -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 @@ -83,74 +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 [M] $@ - 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) \ - $(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) - - -# 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 -- cgit v1.2.3 From eb8305aecb958e8787e7d603c7765c1dcace3a2b Mon Sep 17 00:00:00 2001 From: Matthias Maennich Date: Fri, 6 Sep 2019 11:32:32 +0100 Subject: scripts: Coccinelle script for namespace dependencies. A script that uses the '.ns_deps' files generated by modpost to automatically add the required symbol namespace dependencies to each module. Usage: 1) Move some symbols to a namespace with EXPORT_SYMBOL_NS() or define DEFAULT_SYMBOL_NAMESPACE 2) Run 'make' (or 'make modules') and get warnings about modules not importing that namespace. 3) Run 'make nsdeps' to automatically add required import statements to said modules. This makes it easer for subsystem maintainers to introduce and maintain symbol namespaces into their codebase. Co-developed-by: Martijn Coenen Signed-off-by: Martijn Coenen Acked-by: Julia Lawall Reviewed-by: Greg Kroah-Hartman Signed-off-by: Matthias Maennich Signed-off-by: Jessica Yu --- MAINTAINERS | 5 +++ Makefile | 12 ++++++ scripts/Makefile.modpost | 4 +- scripts/coccinelle/misc/add_namespace.cocci | 23 ++++++++++++ scripts/nsdeps | 58 +++++++++++++++++++++++++++++ 5 files changed, 101 insertions(+), 1 deletion(-) create mode 100644 scripts/coccinelle/misc/add_namespace.cocci create mode 100644 scripts/nsdeps (limited to 'scripts/Makefile.modpost') diff --git a/MAINTAINERS b/MAINTAINERS index e7a47b5210fd..3b170c11a0e6 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -11436,6 +11436,11 @@ S: Maintained T: git git://git.kernel.org/pub/scm/linux/kernel/git/wtarreau/nolibc.git F: tools/include/nolibc/ +NSDEPS +M: Matthias Maennich +S: Maintained +F: scripts/nsdeps + NTB AMD DRIVER M: Shyam Sundar S K L: linux-ntb@googlegroups.com diff --git a/Makefile b/Makefile index 0cdb957ae2c3..014d55b400ca 100644 --- a/Makefile +++ b/Makefile @@ -1500,6 +1500,9 @@ help: @echo ' headerdep - Detect inclusion cycles in headers' @echo ' coccicheck - Check with Coccinelle' @echo '' + @echo 'Tools:' + @echo ' nsdeps - Generate missing symbol namespace dependencies' + @echo '' @echo 'Kernel selftest:' @echo ' kselftest - Build and run kernel selftest (run as root)' @echo ' Build, install, and boot kernel before' @@ -1687,6 +1690,15 @@ quiet_cmd_tags = GEN $@ tags TAGS cscope gtags: FORCE $(call cmd,tags) +# Script to generate missing namespace dependencies +# --------------------------------------------------------------------------- + +PHONY += nsdeps + +nsdeps: modules + $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost nsdeps + $(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@ + # Scripts to check various things for consistency # --------------------------------------------------------------------------- diff --git a/scripts/Makefile.modpost b/scripts/Makefile.modpost index 26e6574ecd08..743fe3a2e885 100644 --- a/scripts/Makefile.modpost +++ b/scripts/Makefile.modpost @@ -56,7 +56,8 @@ MODPOST = scripts/mod/modpost \ $(if $(KBUILD_EXTMOD),$(addprefix -e ,$(KBUILD_EXTRA_SYMBOLS))) \ $(if $(KBUILD_EXTMOD),-o $(modulesymfile)) \ $(if $(CONFIG_SECTION_MISMATCH_WARN_ONLY),,-E) \ - $(if $(KBUILD_MODPOST_WARN),-w) + $(if $(KBUILD_MODPOST_WARN),-w) \ + $(if $(filter nsdeps,$(MAKECMDGOALS)),-d) ifdef MODPOST_VMLINUX @@ -134,6 +135,7 @@ $(modules): %.ko :%.o %.mod.o FORCE targets += $(modules) +nsdeps: __modpost # Add FORCE to the prequisites of a target to force it to be always rebuilt. # --------------------------------------------------------------------------- diff --git a/scripts/coccinelle/misc/add_namespace.cocci b/scripts/coccinelle/misc/add_namespace.cocci new file mode 100644 index 000000000000..c832bb6445a8 --- /dev/null +++ b/scripts/coccinelle/misc/add_namespace.cocci @@ -0,0 +1,23 @@ +// SPDX-License-Identifier: GPL-2.0-only +// +/// Adds missing MODULE_IMPORT_NS statements to source files +/// +/// This script is usually called from scripts/nsdeps with -D ns= to +/// add a missing namespace tag to a module source file. +/// + +@has_ns_import@ +declarer name MODULE_IMPORT_NS; +identifier virtual.ns; +@@ +MODULE_IMPORT_NS(ns); + +// Add missing imports, but only adjacent to a MODULE_LICENSE statement. +// That ensures we are adding it only to the main module source file. +@do_import depends on !has_ns_import@ +declarer name MODULE_LICENSE; +expression license; +identifier virtual.ns; +@@ +MODULE_LICENSE(license); ++ MODULE_IMPORT_NS(ns); diff --git a/scripts/nsdeps b/scripts/nsdeps new file mode 100644 index 000000000000..ac2b6031dd13 --- /dev/null +++ b/scripts/nsdeps @@ -0,0 +1,58 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 +# Linux kernel symbol namespace import generator +# +# This script requires a minimum spatch version. +SPATCH_REQ_VERSION="1.0.4" + +DIR="$(dirname $(readlink -f $0))/.." +SPATCH="`which ${SPATCH:=spatch}`" +if [ ! -x "$SPATCH" ]; then + echo 'spatch is part of the Coccinelle project and is available at http://coccinelle.lip6.fr/' + exit 1 +fi + +SPATCH_REQ_VERSION_NUM=$(echo $SPATCH_REQ_VERSION | ${DIR}/scripts/ld-version.sh) +SPATCH_VERSION=$($SPATCH --version | head -1 | awk '{print $3}') +SPATCH_VERSION_NUM=$(echo $SPATCH_VERSION | ${DIR}/scripts/ld-version.sh) + +if [ "$SPATCH_VERSION_NUM" -lt "$SPATCH_REQ_VERSION_NUM" ] ; then + echo "spatch needs to be version $SPATCH_REQ_VERSION or higher" + exit 1 +fi + +generate_deps_for_ns() { + $SPATCH --very-quiet --in-place --sp-file \ + $srctree/scripts/coccinelle/misc/add_namespace.cocci -D ns=$1 $2 +} + +generate_deps() { + local mod_name=`basename $@ .ko` + local mod_file=`echo $@ | sed -e 's/\.ko/\.mod/'` + local ns_deps_file=`echo $@ | sed -e 's/\.ko/\.ns_deps/'` + if [ ! -f "$ns_deps_file" ]; then return; fi + local mod_source_files=`cat $mod_file | sed -n 1p \ + | sed -e 's/\.o/\.c/g' \ + | sed "s/[^ ]* */${srctree}\/&/g"` + for ns in `cat $ns_deps_file`; do + echo "Adding namespace $ns to module $mod_name (if needed)." + generate_deps_for_ns $ns $mod_source_files + # sort the imports + for source_file in $mod_source_files; do + sed '/MODULE_IMPORT_NS/Q' $source_file > ${source_file}.tmp + offset=$(wc -l ${source_file}.tmp | awk '{print $1;}') + cat $source_file | grep MODULE_IMPORT_NS | sort -u >> ${source_file}.tmp + tail -n +$((offset +1)) ${source_file} | grep -v MODULE_IMPORT_NS >> ${source_file}.tmp + if ! diff -q ${source_file} ${source_file}.tmp; then + mv ${source_file}.tmp ${source_file} + else + rm ${source_file}.tmp + fi + done + done +} + +for f in `cat $objtree/modules.order`; do + generate_deps $f +done + -- cgit v1.2.3