tools/tracing/rtla/src/trace.h

   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 };
  21
  22 int trace_instance_init(struct trace_instance *trace, char *tool_name);
  23 int trace_instance_start(struct trace_instance *trace);
  24 void trace_instance_destroy(struct trace_instance *trace);
  25
  26 struct trace_seq *get_trace_seq(void);
  27 int enable_tracer_by_name(struct tracefs_instance *inst, const char *tracer_name);
  28 void disable_tracer(struct tracefs_instance *inst);
  29
  30 int enable_osnoise(struct trace_instance *trace);
  31 int enable_timerlat(struct trace_instance *trace);
  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_is_off(struct trace_instance *tool, struct trace_instance *trace);
  51 int trace_set_buffer_size(struct trace_instance *trace, int size);