tools lib traceevent: Get rid of malloc_or_die() in add_event()

Make it return error value since its only caller find_event() now can
handle allocation error properly.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Reviewed-by: Steven Rostedt <rostedt@goodmis.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/r/1386567251-22751-8-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 13 insertions, 3 deletions

diff --git a/tools/lib/traceevent/parse-filter.c b/tools/lib/traceevent/parse-filter.c
index b3a61d4fe38e..2b73abfb0c9f 100644
--- a/tools/lib/traceevent/parse-filter.c
+++ b/tools/lib/traceevent/parse-filter.c
@@ -245,15 +245,19 @@ static void free_arg(struct filter_arg *arg)
         free(arg);
 }
 
-static void add_event(struct event_list **events,
+static int add_event(struct event_list **events,
                       struct event_format *event)
 {
         struct event_list *list;
 
-        list = malloc_or_die(sizeof(*list));
+        list = malloc(sizeof(*list));
+        if (list == NULL)
+                return -1;
+
         list->next = *events;
         *events = list;
         list->event = event;
+        return 0;
 }
 
 static int event_match(struct event_format *event,
@@ -276,6 +280,7 @@ find_event(struct pevent *pevent, struct event_list **events,
         regex_t ereg;
         regex_t sreg;
         int match = 0;
+        int fail = 0;
         char *reg;
         int ret;
         int i;
@@ -310,7 +315,10 @@ find_event(struct pevent *pevent, struct event_list **events,
                 event = pevent->events[i];
                 if (event_match(event, sys_name ? &sreg : NULL, &ereg)) {
                         match = 1;
-                        add_event(events, event);
+                        if (add_event(events, event) < 0) {
+                                fail = 1;
+                                break;
+                        }
                 }
         }
 
@@ -320,6 +328,8 @@ find_event(struct pevent *pevent, struct event_list **events,
 
         if (!match)
                 return -1;
+        if (fail)
+                return -2;
 
         return 0;
 }