kbuild: adding symbols in Kconfig and defconfig to TAGS
I'm using TAGS generated from "make TAGS" to read the kernel source code.
When I met a ifdef block
#ifdef CONFIG_FOO
...
#endif
in the soruce code I would like to know the meaning CONFIG_FOO
to decide whether I should read inside the ifdef block
or not. meaning CONFIG_FOO is well documented in Kconfig.
So it is nice if I can jump to CONFIG_FOO entry in Kconfig
from "#ifdef CONFIG_FOO" with the tag jump.
Here is the patch to add symbols in Kconfig and defconfig to TAGS
in "make TAGS" operation.
Signed-off-by: Masatake YAMATO <jet@gyve.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
diff --git a/Makefile b/Makefile
index e890669..a21c319 100644
--- a/Makefile
+++ b/Makefile
@@ -1192,25 +1192,35 @@
ALLSOURCE_ARCHS := $(ARCH)
-define all-sources
- ( find $(__srctree) $(RCS_FIND_IGNORE) \
+define find-sources
+ ( find $(__srctree) $(RCS_FIND_IGNORE) \
\( -name include -o -name arch \) -prune -o \
- -name '*.[chS]' -print; \
+ -name $1 -print; \
for ARCH in $(ALLSOURCE_ARCHS) ; do \
find $(__srctree)arch/$${ARCH} $(RCS_FIND_IGNORE) \
- -name '*.[chS]' -print; \
+ -name $1 -print; \
done ; \
find $(__srctree)security/selinux/include $(RCS_FIND_IGNORE) \
- -name '*.[chS]' -print; \
+ -name $1 -print; \
find $(__srctree)include $(RCS_FIND_IGNORE) \
\( -name config -o -name 'asm-*' \) -prune \
- -o -name '*.[chS]' -print; \
+ -o -name $1 -print; \
for ARCH in $(ALLINCLUDE_ARCHS) ; do \
find $(__srctree)include/asm-$${ARCH} $(RCS_FIND_IGNORE) \
- -name '*.[chS]' -print; \
+ -name $1 -print; \
done ; \
find $(__srctree)include/asm-generic $(RCS_FIND_IGNORE) \
- -name '*.[chS]' -print )
+ -name $1 -print )
+endef
+
+define all-sources
+ $(call find-sources,'*.[chS]')
+endef
+define all-kconfigs
+ $(call find-sources,'Kconfig*')
+endef
+define all-defconfigs
+ $(call find-sources,'defconfig')
endef
quiet_cmd_cscope-file = FILELST cscope.files
@@ -1230,7 +1240,13 @@
echo "-I __initdata,__exitdata,__acquires,__releases \
-I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL \
--extra=+f --c-kinds=+px"`; \
- $(all-sources) | xargs etags $$ETAGSF -a
+ $(all-sources) | xargs etags $$ETAGSF -a; \
+ if test "x$$ETAGSF" = x; then \
+ $(all-kconfigs) | xargs etags -a \
+ --regex='/^config[ \t]+\([a-zA-Z0-9_]+\)/\1/'; \
+ $(all-defconfigs) | xargs etags -a \
+ --regex='/^#?[ \t]?\(CONFIG_[a-zA-Z0-9_]+\)/\1/'; \
+ fi
endef
TAGS: FORCE