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scripts/nsdeps: support nsdeps for external module builds
scripts/nsdeps is written to take care of only in-tree modules. Perhaps, this is not a bug, but just a design. At least, Documentation/core-api/symbol-namespaces.rst focuses on in-tree modules. Having said that, some people already tried nsdeps for external modules. So, it would be nice to support it. Reported-by: Steve French <smfrench@gmail.com> Reported-by: Jessica Yu <jeyu@kernel.org> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Tested-by: Jessica Yu <jeyu@kernel.org> Acked-by: Jessica Yu <jeyu@kernel.org> Reviewed-by: Matthias Maennich <maennich@google.com> Tested-by: Matthias Maennich <maennich@google.com>
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@ -152,3 +152,6 @@ in-tree modules::
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- notice the warning of modpost telling about a missing import
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- run `make nsdeps` to add the import to the correct code location
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You can also run nsdeps for external module builds. A typical usage is::
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$ make -C <path_to_kernel_src> M=$PWD nsdeps
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3
Makefile
3
Makefile
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@ -1008,6 +1008,7 @@ endif
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PHONY += prepare0
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export MODORDER := $(extmod-prefix)modules.order
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export MODULES_NSDEPS := $(extmod-prefix)modules.nsdeps
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ifeq ($(KBUILD_EXTMOD),)
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core-y += kernel/ certs/ mm/ fs/ ipc/ security/ crypto/ block/
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@ -1620,7 +1621,7 @@ _emodinst_post: _emodinst_
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$(call cmd,depmod)
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clean-dirs := $(KBUILD_EXTMOD)
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clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers
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clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers $(KBUILD_EXTMOD)/modules.nsdeps
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PHONY += /
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/:
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@ -66,7 +66,7 @@ __modpost:
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else
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MODPOST += $(subst -i,-n,$(filter -i,$(MAKEFLAGS))) -s -T - \
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$(if $(KBUILD_NSDEPS),-d modules.nsdeps)
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$(if $(KBUILD_NSDEPS),-d $(MODULES_NSDEPS))
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ifeq ($(KBUILD_EXTMOD),)
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MODPOST += $(wildcard vmlinux)
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@ -21,6 +21,12 @@ if [ "$SPATCH_VERSION_NUM" -lt "$SPATCH_REQ_VERSION_NUM" ] ; then
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exit 1
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fi
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if [ "$KBUILD_EXTMOD" ]; then
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src_prefix=
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else
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src_prefix=$srctree/
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fi
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generate_deps_for_ns() {
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$SPATCH --very-quiet --in-place --sp-file \
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$srctree/scripts/coccinelle/misc/add_namespace.cocci -D ns=$1 $2
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@ -32,7 +38,7 @@ generate_deps() {
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local namespaces="$*"
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local mod_source_files="`cat $mod.mod | sed -n 1p \
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| sed -e 's/\.o/\.c/g' \
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| sed "s|[^ ]* *|${srctree}/&|g"`"
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| sed "s|[^ ]* *|${src_prefix}&|g"`"
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for ns in $namespaces; do
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echo "Adding namespace $ns to module $mod.ko."
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generate_deps_for_ns $ns "$mod_source_files"
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@ -54,4 +60,4 @@ generate_deps() {
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while read line
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do
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generate_deps $line
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done < modules.nsdeps
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done < $MODULES_NSDEPS
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