[PATCH v3 1/2] scripts/tags.sh: Support subarch for ARM

[Joonsoo Kim <js1304@gmail.com>]

Current tags.sh doesn't handle subarch for ARM.
There are too many subarch on ARM, it is hard that we locate some
functions which are defined in every subarch with tags util family.
Therefore support subarch for removing this unconvenience.

We can use ARM subarch functionality like below.
"make cscope O=. SRCARCH=arm SUBARCH=xxx"

Signed-off-by: Joonsoo Kim <js1304@gmail.com>
---
v2: change bash specific '[[]]' to 'case in' statement.
v3: quote the patterns.

diff --git a/scripts/tags.sh b/scripts/tags.sh
index 79fdafb..8fb18d1 100755
--- a/scripts/tags.sh
+++ b/scripts/tags.sh
@@ -48,13 +48,14 @@ find_arch_sources()
 	for i in $archincludedir; do
 		prune="$prune -wholename $i -prune -o"
 	done
-	find ${tree}arch/$1 $ignore $prune -name "$2" -print;
+	find ${tree}arch/$1 $ignore $subarchprune $prune -name "$2" -print;
 }
 
 # find sources in arch/$1/include
 find_arch_include_sources()
 {
-	include=$(find ${tree}arch/$1/ -name include -type d);
+	include=$(find ${tree}arch/$1/ $subarchprune \
+					-name include -type d -print);
 	if [ -n "$include" ]; then
 		archincludedir="$archincludedir $include"
 		find $include $ignore -name "$2" -print;
@@ -234,6 +235,21 @@ if [ "${ARCH}" = "um" ]; then
 	else
 		archinclude=${SUBARCH}
 	fi
+elif [ "${SRCARCH}" = "arm" -a "${SUBARCH}" != "" ]; then
+	subarchdir=$(find ${tree}arch/$SRCARCH/ -name "mach-*" -type d -o \
+							-name "plat-*" -type d);
+	for i in $subarchdir; do
+		case "$i" in
+			*"mach-"${SUBARCH})
+				;;
+			*"plat-"${SUBARCH})
+				;;
+			*)
+				subarchprune="$subarchprune \
+						-wholename $i -prune -o"
+				;;
+		esac
+	done
 fi
 
 remove_structs=
-- 
1.7.9.5