[PATCH 1/2] tools lib traceevent: Teach [ce]tags about libtraceeevent error codes

[Namhyung Kim <namhyung@kernel.org>]

From: Namhyung Kim <namhyung.kim@lge.com>

As we use a macro trick to sync each error codes with its
description string, teach [ce]tags to process them properly.

This patch modifies the libtraceevent's Makefile not a
kernel one.

Cc: Frederic Weisbecker <fweisbec@gmail.com>
Suggested-by: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/n/tip-3101nsbg52glxdqih291qj74@git.kernel.org
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
---
 tools/lib/traceevent/Makefile |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/tools/lib/traceevent/Makefile b/tools/lib/traceevent/Makefile
index 56daa768b9e3..15f6eb8f4935 100644
--- a/tools/lib/traceevent/Makefile
+++ b/tools/lib/traceevent/Makefile
@@ -284,11 +284,13 @@ TRACEEVENT-CFLAGS: force
 
 tags:	force
 	$(RM) tags
-	find . -name '*.[ch]' | xargs ctags --extra=+f --c-kinds=+px
+	find . -name '*.[ch]' | xargs ctags --extra=+f --c-kinds=+px \
+	--regex-c++='/_PE\(([^,)]*).*/PEVENT_ERRNO__\1/'
 
 TAGS:	force
 	$(RM) TAGS
-	find . -name '*.[ch]' | xargs etags
+	find . -name '*.[ch]' | xargs etags \
+	--regex='/_PE(\([^,)]*\).*/PEVENT_ERRNO__\1/'
 
 define do_install
 	$(print_install)				\
-- 
1.7.10.2