tracing: Allow histogram triggers to access ftrace internal events

Now that trace_marker can have triggers, including a histogram triggers, the
onmatch() and onmax() access the trace event. To do so, the search routine
to find the event file needs to use the raw __find_event_file() that does
not filter out ftrace events.

Reviewed-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>

diff --git a/kernel/trace/trace_events_hist.c b/kernel/trace/trace_events_hist.c
index b9061ed..046c716 100644 (file)
--- a/kernel/trace/trace_events_hist.c
+++ b/kernel/trace/trace_events_hist.c
@@ -2865,7 +2865,7 @@ static struct trace_event_file *event_file(struct trace_array *tr,
 {
        struct trace_event_file *file;
 
-       file = find_event_file(tr, system, event_name);
+       file = __find_event_file(tr, system, event_name);
        if (!file)
                return ERR_PTR(-EINVAL);