1 // SPDX-License-Identifier: GPL-2.0
2 #include <tracefs.h>
3 #include <stddef.h>
4 
5 struct trace_events {
6 	struct trace_events *next;
7 	char *system;
8 	char *event;
9 	char *filter;
10 	char *trigger;
11 	char enabled;
12 	char filter_enabled;
13 	char trigger_enabled;
14 };
15 
16 struct trace_instance {
17 	struct tracefs_instance		*inst;
18 	struct tep_handle		*tep;
19 	struct trace_seq		*seq;
20 	unsigned long long		missed_events;
21 	unsigned long long		processed_events;
22 };
23 
24 int trace_instance_init(struct trace_instance *trace, char *tool_name);
25 int trace_instance_start(struct trace_instance *trace);
26 int trace_instance_stop(struct trace_instance *trace);
27 void trace_instance_destroy(struct trace_instance *trace);
28 
29 struct trace_seq *get_trace_seq(void);
30 int enable_tracer_by_name(struct tracefs_instance *inst, const char *tracer_name);
31 void disable_tracer(struct tracefs_instance *inst);
32 
33 int enable_osnoise(struct trace_instance *trace);
34 int enable_timerlat(struct trace_instance *trace);
35 
36 struct tracefs_instance *create_instance(char *instance_name);
37 void destroy_instance(struct tracefs_instance *inst);
38 
39 int save_trace_to_file(struct tracefs_instance *inst, const char *filename);
40 int collect_registered_events(struct tep_event *tep, struct tep_record *record,
41 			      int cpu, void *context);
42 
43 struct trace_events *trace_event_alloc(const char *event_string);
44 void trace_events_disable(struct trace_instance *instance,
45 			  struct trace_events *events);
46 void trace_events_destroy(struct trace_instance *instance,
47 			  struct trace_events *events);
48 int trace_events_enable(struct trace_instance *instance,
49 			  struct trace_events *events);
50 
51 int trace_event_add_filter(struct trace_events *event, char *filter);
52 int trace_event_add_trigger(struct trace_events *event, char *trigger);
53 int trace_set_buffer_size(struct trace_instance *trace, int size);
54