tools lib traceevent: Teach [ce]tags about libtraceeevent error codes

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.

Suggested-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/n/tip-3101nsbg52glxdqih291qj74@git.kernel.org
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/r/1340352615-20737-1-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 4 insertions, 2 deletions

diff --git a/tools/lib/traceevent/Makefile b/tools/lib/traceevent/Makefile
index 423f4b81ecce..34a577e7d554 100644
--- a/tools/lib/traceevent/Makefile
+++ b/tools/lib/traceevent/Makefile
@@ -270,11 +270,13 @@ endif
 
 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)                                \