commit d350ef7bd82f0654aac7bebc25b7d3b77532a60e
Author: Pete Wyckoff <pw@titan.sf.osc.edu>
Date:   Thu Nov 2 18:22:11 2006 -0500

    make tags
    (cherry picked from bee0f3b25e4d0ac986ae070446e498a86b2ef676 commit)

diff --git a/Makefile b/Makefile
index aef9625..d90c580 100644
--- a/Makefile
+++ b/Makefile
@@ -1317,19 +1317,22 @@ endef
 
 define xtags
 	if $1 --version 2>&1 | grep -iq exuberant; then \
+	    ignore="-I __initdata,__exitdata,__acquires,__releases" ;\
+	    ignore="$$ignore -I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL" ;\
+	    ignorefile=../ctags-ignore ;\
+	    [ -f $$ignorefile ] && ignore=-I$$ignorefile ;\
 	    $(all-sources) | xargs $1 -a \
-		-I __initdata,__exitdata,__acquires,__releases \
-		-I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL \
-		--extra=+f --c-kinds=+px \
+		$$ignore \
+		--extra=+f \
 		--regex-asm='/ENTRY\(([^)]*)\).*/\1/'; \
 	    $(all-kconfigs) | xargs $1 -a \
 		--langdef=kconfig \
 		--language-force=kconfig \
-		--regex-kconfig='/^[[:blank:]]*config[[:blank:]]+([[:alnum:]_]+)/\1/'; \
-	    $(all-defconfigs) | xargs -r $1 -a \
-		--langdef=dotconfig \
-		--language-force=dotconfig \
-		--regex-dotconfig='/^#?[[:blank:]]*(CONFIG_[[:alnum:]_]+)/\1/'; \
+		--regex-kconfig='/^[[:blank:]]*config[[:blank:]]+([[:alnum:]_]+)/\1/' \
+		--regex-kconfig='/^[[:blank:]]*config[[:blank:]]+([[:alnum:]_]+)/CONFIG_\1/'; \
+	    if hash sort-tags 2>/dev/null ; then \
+		sort-tags < tags > tags2 ; mv tags2 tags ;\
+	    fi ;\
 	elif $1 --version 2>&1 | grep -iq emacs; then \
 	    $(all-sources) | xargs $1 -a; \
 	    $(all-kconfigs) | xargs $1 -a \