tools lib traceevent: Make pevent_filter_add_filter_str() return pevent_errno

Refactor the pevent_filter_add_filter_str() to return a proper error
code and get rid of the third error_str argument.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/r/1386833777-3790-12-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 4 insertions, 4 deletions

diff --git a/tools/lib/traceevent/event-parse.h b/tools/lib/traceevent/event-parse.h
index da942d59cc3a..089964e56ed4 100644
--- a/tools/lib/traceevent/event-parse.h
+++ b/tools/lib/traceevent/event-parse.h
@@ -372,7 +372,8 @@ enum pevent_flag {
         _PE(ILLEGAL_TOKEN,      "illegal token"),                             \
         _PE(INVALID_PAREN,      "open parenthesis cannot come here"),         \
         _PE(UNBALANCED_PAREN,   "unbalanced number of parenthesis"),          \
-        _PE(UNKNOWN_TOKEN,      "unknown token")
+        _PE(UNKNOWN_TOKEN,      "unknown token"),                             \
+        _PE(FILTER_NOT_FOUND,   "no filter found")
 
 #undef _PE
 #define _PE(__code, __str) PEVENT_ERRNO__ ## __code
@@ -863,9 +864,8 @@ enum filter_trivial_type {
         FILTER_TRIVIAL_BOTH,
 };
 
-int pevent_filter_add_filter_str(struct event_filter *filter,
-                                 const char *filter_str,
-                                 char **error_str);
+enum pevent_errno pevent_filter_add_filter_str(struct event_filter *filter,
+                                               const char *filter_str);
 
 
 int pevent_filter_match(struct event_filter *filter,