9 #include <linux/kernel.h>
10 #include <traceevent/event-parse.h>
11 #include "trace-event.h"
15 * global trace_event object used by trace_event__tp_format
17 * TODO There's no cleanup call for this. Add some sort of
18 * __exit function support and call trace_event__cleanup
21 static struct trace_event tevent;
23 int trace_event__init(struct trace_event *t)
25 struct pevent *pevent = pevent_alloc();
28 t->plugin_list = traceevent_load_plugins(pevent);
32 return pevent ? 0 : -1;
35 void trace_event__cleanup(struct trace_event *t)
37 traceevent_unload_plugins(t->plugin_list, t->pevent);
38 pevent_free(t->pevent);
41 static struct event_format*
42 tp_format(const char *sys, const char *name)
44 struct pevent *pevent = tevent.pevent;
45 struct event_format *event = NULL;
50 scnprintf(path, PATH_MAX, "%s/%s/%s/format",
51 tracing_events_path, sys, name);
53 if (filename__read_str(path, &data, &size))
56 pevent_parse_format(pevent, &event, data, size, sys);
63 trace_event__tp_format(const char *sys, const char *name)
65 static bool initialized;
68 int be = traceevent_host_bigendian();
69 struct pevent *pevent;
71 if (trace_event__init(&tevent))
74 pevent = tevent.pevent;
75 pevent_set_flag(pevent, PEVENT_NSEC_OUTPUT);
76 pevent_set_file_bigendian(pevent, be);
77 pevent_set_host_bigendian(pevent, be);
81 return tp_format(sys, name);