extern int event_trace_add_tracer(struct dentry *parent, struct trace_array *tr);
extern int event_trace_del_tracer(struct trace_array *tr);
+extern struct trace_event_file *__find_event_file(struct trace_array *tr,
+ const char *system,
+ const char *event);
extern struct trace_event_file *find_event_file(struct trace_array *tr,
const char *system,
const char *event);
}
}
+/* Returns any file that matches the system and event */
struct trace_event_file *
-find_event_file(struct trace_array *tr, const char *system, const char *event)
+__find_event_file(struct trace_array *tr, const char *system, const char *event)
{
struct trace_event_file *file;
struct trace_event_call *call;
call = file->event_call;
name = trace_event_name(call);
- if (!name || !call->class || !call->class->reg)
- continue;
-
- if (call->flags & TRACE_EVENT_FL_IGNORE_ENABLE)
+ if (!name || !call->class)
continue;
if (strcmp(event, name) == 0 &&
return NULL;
}
+/* Returns valid trace event files that match system and event */
+struct trace_event_file *
+find_event_file(struct trace_array *tr, const char *system, const char *event)
+{
+ struct trace_event_file *file;
+
+ file = __find_event_file(tr, system, event);
+ if (!file || !file->event_call->class->reg ||
+ file->event_call->flags & TRACE_EVENT_FL_IGNORE_ENABLE)
+ return NULL;
+
+ return file;
+}
+
#ifdef CONFIG_DYNAMIC_FTRACE
/* Avoid typos */