From f81b1be40c44b33b9706d64c117edd29e627ad12 Mon Sep 17 00:00:00 2001
From: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Date: Mon, 8 Feb 2010 00:25:59 +0100
Subject: [PATCH] tags: include headers before source files

Currently looking up a structure definition in TAGS / tags takes one to
one of multiple "static struct X" definitions in arch sources, which makes
it for many structs practically impossible to get to the required header.
This patch changes the order of sources being tagged to first scan
architecture includes, then the top-level include/ directory, and only
then the rest. It also takes into account, that many architectures have
more than one include directory, i.e., not only arch/$ARCH/include, but
also arch/$ARCH/mach-X/include etc.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Reviewed-by: WANG Cong <xiyou.wangcong@gmail.com>
[mmarek@suse.cz: fix 'var+=text' bashism]
Signed-off-by: Michal Marek <mmarek@suse.cz>
---
 scripts/tags.sh | 20 ++++++++++++++------
 1 file changed, 14 insertions(+), 6 deletions(-)

diff --git a/scripts/tags.sh b/scripts/tags.sh
index 1a0c44d7c4a75..c1220419e59d5 100755
--- a/scripts/tags.sh
+++ b/scripts/tags.sh
@@ -32,13 +32,20 @@ fi
 # find sources in arch/$ARCH
 find_arch_sources()
 {
-	find ${tree}arch/$1 $ignore -name "$2" -print;
+	for i in $archincludedir; do
+		prune="$prune -wholename $i -prune -o"
+	done
+	find ${tree}arch/$1 $ignore $prune -name "$2" -print;
 }
 
 # find sources in arch/$1/include
 find_arch_include_sources()
 {
-	find ${tree}arch/$1/include $ignore -name "$2" -print;
+	include=$(find ${tree}arch/$1/ -name include -type d);
+	if [ -n "$include" ]; then
+		archincludedir="$archincludedir $include"
+		find $include $ignore -name "$2" -print;
+	fi
 }
 
 # find sources in include/
@@ -63,14 +70,15 @@ find_sources()
 
 all_sources()
 {
-	for arch in $ALLSOURCE_ARCHS
-	do
-		find_sources $arch '*.[chS]'
-	done
+	find_arch_include_sources ${ARCH} '*.[chS]'
 	if [ ! -z "$archinclude" ]; then
 		find_arch_include_sources $archinclude '*.[chS]'
 	fi
 	find_include_sources '*.[chS]'
+	for arch in $ALLSOURCE_ARCHS
+	do
+		find_sources $arch '*.[chS]'
+	done
 	find_other_sources '*.[chS]'
 }
 
-- 
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