Apparently, 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:
Again, `make nsdeps` will eventually add the missing namespace imports for
in-tree modules::
^^^^^^^
Having said that, I already saw at least two people trying nsdeps for
external module builds. So, it would be nice to support it.
Reported-by: Steve French <smfrench@xxxxxxxxx>
Reported-by: Jessica Yu <jeyu@xxxxxxxxxx>
Signed-off-by: Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx>
---
Documentation/core-api/symbol-namespaces.rst | 3 +++
Makefile | 1 +
scripts/Makefile.modpost | 2 +-
scripts/nsdeps | 10 ++++++++--
4 files changed, 13 insertions(+), 3 deletions(-)
diff --git a/Documentation/core-api/symbol-namespaces.rst b/Documentation/core-api/symbol-namespaces.rst
index 982ed7b568ac..9b76337f6756 100644
--- a/Documentation/core-api/symbol-namespaces.rst
+++ b/Documentation/core-api/symbol-namespaces.rst
@@ -152,3 +152,6 @@ in-tree modules::
- notice the warning of modpost telling about a missing import
- run `make nsdeps` to add the import to the correct code location
+You can also run nsdeps for external module builds. A typical usage is::
+
+ $ make -C <path_to_kernel_src> M=$PWD nsdeps
diff --git a/Makefile b/Makefile
index 1e3f307bd49b..780a65493866 100644
--- a/Makefile
+++ b/Makefile
@@ -1007,6 +1007,7 @@ endif
PHONY += prepare0
export MODORDER := $(extmod-prefix)modules.order
+export MODULES_NSDEPS := $(extmod-prefix)modules.nsdeps
ifeq ($(KBUILD_EXTMOD),)
core-y += kernel/ certs/ mm/ fs/ ipc/ security/ crypto/ block/
diff --git a/scripts/Makefile.modpost b/scripts/Makefile.modpost
index da37128c3f9f..8359f8af5ee6 100644
--- a/scripts/Makefile.modpost
+++ b/scripts/Makefile.modpost
@@ -66,7 +66,7 @@ __modpost:
else
MODPOST += $(subst -i,-n,$(filter -i,$(MAKEFLAGS))) -s -T - \
- $(if $(KBUILD_NSDEPS),-d modules.nsdeps)
+ $(if $(KBUILD_NSDEPS),-d $(MODULES_NSDEPS))
ifeq ($(KBUILD_EXTMOD),)
MODPOST += $(wildcard vmlinux)
diff --git a/scripts/nsdeps b/scripts/nsdeps
index 08db427a7fe5..3b8a9e173ebf 100644
--- a/scripts/nsdeps
+++ b/scripts/nsdeps
@@ -21,6 +21,12 @@ if [ "$SPATCH_VERSION_NUM" -lt "$SPATCH_REQ_VERSION_NUM" ] ; then
exit 1
fi
+if [ "$KBUILD_EXTMOD" ]; then
+ src_prefix=
+else
+ src_prefix=$srctree/
+fi
+
generate_deps_for_ns() {
$SPATCH --very-quiet --in-place --sp-file \
$srctree/scripts/coccinelle/misc/add_namespace.cocci -D ns=$1 $2
@@ -32,7 +38,7 @@ generate_deps() {
local namespaces="$*"
local mod_source_files=`cat $mod.mod | sed -n 1p \
| sed -e 's/\.o/\.c/g' \
- | sed "s|[^ ]* *|${srctree}/&|g"`
+ | sed "s|[^ ]* *|${src_prefix}&|g"`
for ns in $namespaces; do
echo "Adding namespace $ns to module $mod.ko."
generate_deps_for_ns $ns $mod_source_files
@@ -54,4 +60,4 @@ generate_deps() {
while read line
do
generate_deps $line
-done < modules.nsdeps
+done < $MODULES_NSDEPS
--
2.17.1
