scripts/tags.sh: Support compiled source

We usually have interst in compiled files only,
because they are strongly related to individual's work.
Current tags.sh can't select compiled files, so support it.

We can use this functionality like below.
"make cscope O=. SRCARCH=xxxx COMPILED_SOURCE=compiled"

It must be executed after building the kernel.

Signed-off-by: Joonsoo Kim <js1304@gmail.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>

1 files changed, 31 insertions, 6 deletions

diff --git a/scripts/tags.sh b/scripts/tags.sh
index 8fb18d1da71b..08f06c00745e 100755
--- a/scripts/tags.sh
+++ b/scripts/tags.sh
@@ -96,6 +96,32 @@ all_sources()
 	find_other_sources '*.[chS]'
 }
 
+all_compiled_sources()
+{
+	for i in $(all_sources); do
+		case "$i" in
+			*.[cS])
+				j=${i/\.[cS]/\.o}
+				if [ -e $j ]; then
+					echo $i
+				fi
+				;;
+			*)
+				echo $i
+				;;
+		esac
+	done
+}
+
+all_target_sources()
+{
+	if [ -n "$COMPILED_SOURCE" ]; then
+		all_compiled_sources
+	else
+		all_sources
+	fi
+}
+
 all_kconfigs()
 {
 	for arch in $ALLSOURCE_ARCHS; do
@@ -111,18 +137,18 @@ all_defconfigs()
 
 docscope()
 {
-	(echo \-k; echo \-q; all_sources) > cscope.files
+	(echo \-k; echo \-q; all_target_sources) > cscope.files
 	cscope -b -f cscope.out
 }
 
 dogtags()
 {
-	all_sources | gtags -i -f -
+	all_target_sources | gtags -i -f -
 }
 
 exuberant()
 {
-	all_sources | xargs $1 -a                               \
+	all_target_sources | xargs $1 -a                        \
 	-I __initdata,__exitdata,__acquires,__releases          \
 	-I __read_mostly,____cacheline_aligned                  \
 	-I ____cacheline_aligned_in_smp                         \
@@ -174,7 +200,7 @@ exuberant()
 
 emacs()
 {
-	all_sources | xargs $1 -a                               \
+	all_target_sources | xargs $1 -a                        \
 	--regex='/^(ENTRY|_GLOBAL)(\([^)]*\)).*/\2/'            \
 	--regex='/^SYSCALL_DEFINE[0-9]?(\([^,)]*\).*/sys_\1/'   \
 	--regex='/^TRACE_EVENT(\([^,)]*\).*/trace_\1/'		\
@@ -221,11 +247,10 @@ xtags()
 	elif $1 --version 2>&1 | grep -iq emacs; then
 		emacs $1
 	else
-		all_sources | xargs $1 -a
+		all_target_sources | xargs $1 -a
         fi
 }
 
-
 # Support um (which uses SUBARCH)
 if [ "${ARCH}" = "um" ]; then
 	if [ "$SUBARCH" = "i386" ]; then