10 #include "trace.h"
51  * create_instance - create a trace instance with *instance_name
59  * destroy_instance - remove a trace instance and free the data
68  * save_trace_to_file - save the trace output of the instance to the file
72 	const char *file = "trace";  in save_trace_to_file()
80 		err_msg("Failed to open trace file\n");  in save_trace_to_file()
118 	struct trace_instance *trace = context;  in collect_registered_events()  local
119 	struct trace_seq *s = trace->seq;  in collect_registered_events()
121 	trace->processed_events++;  in collect_registered_events()
142 	struct trace_instance *trace = context;  in collect_missed_events()  local
144 	if (trace->missed_events == UINT64_MAX)  in collect_missed_events()
148 		trace->missed_events += record->missed_events;  in collect_missed_events()
151 		trace->missed_events = UINT64_MAX;  in collect_missed_events()
157  * trace_instance_destroy - destroy and free a rtla trace instance
159 void trace_instance_destroy(struct trace_instance *trace)  in trace_instance_destroy()  argument
161 	if (trace->inst) {  in trace_instance_destroy()
162 		disable_tracer(trace->inst);  in trace_instance_destroy()
163 		destroy_instance(trace->inst);  in trace_instance_destroy()
164 		trace->inst = NULL;  in trace_instance_destroy()
167 	if (trace->seq) {  in trace_instance_destroy()
168 		free(trace->seq);  in trace_instance_destroy()
169 		trace->seq = NULL;  in trace_instance_destroy()
172 	if (trace->tep) {  in trace_instance_destroy()
173 		tep_free(trace->tep);  in trace_instance_destroy()
174 		trace->tep = NULL;  in trace_instance_destroy()
179  * trace_instance_init - create an rtla trace instance
185  * Note that the trace instance is returned disabled. This allows
187  * to the kernel threads, before starting generating trace entries.
189 int trace_instance_init(struct trace_instance *trace, char *tool_name)  in trace_instance_init()  argument
191 	trace->seq = calloc(1, sizeof(*trace->seq));  in trace_instance_init()
192 	if (!trace->seq)  in trace_instance_init()
195 	trace_seq_init(trace->seq);  in trace_instance_init()
197 	trace->inst = create_instance(tool_name);  in trace_instance_init()
198 	if (!trace->inst)  in trace_instance_init()
201 	trace->tep = tracefs_local_events(NULL);  in trace_instance_init()
202 	if (!trace->tep)  in trace_instance_init()
209 	tracefs_trace_off(trace->inst);  in trace_instance_init()
215 	trace->missed_events = 0;  in trace_instance_init()
216 	tracefs_follow_missed_events(trace->inst,  in trace_instance_init()
218 				     trace);  in trace_instance_init()
220 	trace->processed_events = 0;  in trace_instance_init()
225 	trace_instance_destroy(trace);  in trace_instance_init()
232 int trace_instance_start(struct trace_instance *trace)  in trace_instance_start()  argument
234 	return tracefs_trace_on(trace->inst);  in trace_instance_start()
240 int trace_instance_stop(struct trace_instance *trace)  in trace_instance_stop()  argument
242 	return tracefs_trace_off(trace->inst);  in trace_instance_stop()
246  * trace_events_free - free a list of trace events
268  * trace_event_alloc - alloc and parse a single trace event
431  * trace_events_disable - disable all trace events
559  * trace_events_destroy - disable and free all trace events
574 int trace_set_buffer_size(struct trace_instance *trace, int size)  in trace_set_buffer_size()  argument
578 	debug_msg("Setting trace buffer size to %d Kb\n", size);  in trace_set_buffer_size()
579 	retval = tracefs_instance_set_buffer_size(trace->inst, size, -1);  in trace_set_buffer_size()
581 		err_msg("Error setting trace buffer size\n");  in trace_set_buffer_size()