tracing: Kill destroy_call_preds()

Remove destroy_call_preds(). Its only caller, __trace_remove_event_call(),
can use free_event_filter() and nullify ->filter by hand.

Perhaps we could keep this trivial helper although imo it is pointless, but
then it should be static in trace_events.c.

Link: http://lkml.kernel.org/p/20140715184816.GA20495@redhat.com

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

2 files changed, 2 insertions, 7 deletions

diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c
index 85914edf5059..0d8ee29f6b9a 100644
--- a/kernel/trace/trace_events.c
+++ b/kernel/trace/trace_events.c
@@ -1748,7 +1748,8 @@ static void __trace_remove_event_call(struct ftrace_event_call *call)
 {
         event_remove(call);
         trace_destroy_fields(call);
-        destroy_call_preds(call);
+        free_event_filter(call->filter);
+        call->filter = NULL;
 }
 
 static int probe_remove_event_call(struct ftrace_event_call *call)
diff --git a/kernel/trace/trace_events_filter.c b/kernel/trace/trace_events_filter.c
index 30fc66f5cdca..1edec329be29 100644
--- a/kernel/trace/trace_events_filter.c
+++ b/kernel/trace/trace_events_filter.c
@@ -804,12 +804,6 @@ void free_event_filter(struct event_filter *filter)
         __free_filter(filter);
 }
 
-void destroy_call_preds(struct ftrace_event_call *call)
-{
-        __free_filter(call->filter);
-        call->filter = NULL;
-}
-
 static struct event_filter *__alloc_filter(void)
 {
         struct event_filter *filter;