-struct trace_event {
- const char *name;
- int (*regfunc)(void *data);
- int (*unregfunc)(void *data);
-};
-
-struct trace_event_lib {
- struct trace_event * const *trace_events_start;
- int trace_events_count;
- struct cds_list_head list;
-};
-
-struct trace_event_iter {
- struct trace_event_lib *lib;
- struct trace_event * const *trace_event;
-};
-
-extern void lock_trace_events(void);
-extern void unlock_trace_events(void);
-
-extern void trace_event_iter_start(struct trace_event_iter *iter);
-extern void trace_event_iter_next(struct trace_event_iter *iter);
-extern void trace_event_iter_reset(struct trace_event_iter *iter);
-
-extern int trace_event_get_iter_range(struct trace_event * const **trace_event,
- struct trace_event * const *begin,
- struct trace_event * const *end);
-
-extern void trace_event_update_process(void);
-extern int is_trace_event_enabled(const char *channel, const char *name);
-
-extern int trace_event_register_lib(struct trace_event * const *start_trace_events,
- int trace_event_count);
-
-extern int trace_event_unregister_lib(struct trace_event * const *start_trace_events);
-
-#define TRACE_EVENT_LIB \
- extern struct trace_event * const __start___trace_events_ptrs[] \
- __attribute__((weak, visibility("hidden"))); \
- extern struct trace_event * const __stop___trace_events_ptrs[] \
- __attribute__((weak, visibility("hidden"))); \
- static struct trace_event * const __event_ptrs_dummy \
- __attribute__((used, section("__trace_events_ptrs"))) = NULL; \
- static void __attribute__((constructor)) \
- __trace_events__init(void) \
- { \
- trace_event_register_lib(__start___trace_events_ptrs, \
- __stop___trace_events_ptrs - \
- __start___trace_events_ptrs); \
- } \
- \
- static void __attribute__((destructor)) \
- __trace_event__destroy(void) \
- { \
- trace_event_unregister_lib(__start___trace_events_ptrs);\
- }