rtla/src/trace.h

0001 // SPDX-License-Identifier: GPL-2.0
0002 #include <tracefs.h>
0003 #include <stddef.h>
0004
0005 struct trace_events {
0006     struct trace_events *next;
0007     char *system;
0008     char *event;
0009     char *filter;
0010     char *trigger;
0011     char enabled;
0012     char filter_enabled;
0013     char trigger_enabled;
0014 };
0015
0016 struct trace_instance {
0017     struct tracefs_instance     *inst;
0018     struct tep_handle       *tep;
0019     struct trace_seq        *seq;
0020 };
0021
0022 int trace_instance_init(struct trace_instance *trace, char *tool_name);
0023 int trace_instance_start(struct trace_instance *trace);
0024 void trace_instance_destroy(struct trace_instance *trace);
0025
0026 struct trace_seq *get_trace_seq(void);
0027 int enable_tracer_by_name(struct tracefs_instance *inst, const char *tracer_name);
0028 void disable_tracer(struct tracefs_instance *inst);
0029
0030 int enable_osnoise(struct trace_instance *trace);
0031 int enable_timerlat(struct trace_instance *trace);
0032
0033 struct tracefs_instance *create_instance(char *instance_name);
0034 void destroy_instance(struct tracefs_instance *inst);
0035
0036 int save_trace_to_file(struct tracefs_instance *inst, const char *filename);
0037 int collect_registered_events(struct tep_event *tep, struct tep_record *record,
0038                   int cpu, void *context);
0039
0040 struct trace_events *trace_event_alloc(const char *event_string);
0041 void trace_events_disable(struct trace_instance *instance,
0042               struct trace_events *events);
0043 void trace_events_destroy(struct trace_instance *instance,
0044               struct trace_events *events);
0045 int trace_events_enable(struct trace_instance *instance,
0046               struct trace_events *events);
0047
0048 int trace_event_add_filter(struct trace_events *event, char *filter);
0049 int trace_event_add_trigger(struct trace_events *event, char *trigger);
0050 int trace_is_off(struct trace_instance *tool, struct trace_instance *trace);