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 struct tracefs_instance *create_instance(char *instance_name); 34 void destroy_instance(struct tracefs_instance *inst); 35 36 int save_trace_to_file(struct tracefs_instance *inst, const char *filename); 37 int collect_registered_events(struct tep_event *tep, struct tep_record *record, 38 int cpu, void *context); 39 40 struct trace_events *trace_event_alloc(const char *event_string); 41 void trace_events_disable(struct trace_instance *instance, 42 struct trace_events *events); 43 void trace_events_destroy(struct trace_instance *instance, 44 struct trace_events *events); 45 int trace_events_enable(struct trace_instance *instance, 46 struct trace_events *events); 47 48 int trace_event_add_filter(struct trace_events *event, char *filter); 49 int trace_event_add_trigger(struct trace_events *event, char *trigger); 50 int trace_set_buffer_size(struct trace_instance *trace, int size); 51