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()
83 		err_msg("Failed to open trace file\n");  in save_trace_to_file()
87 	printf("  Saving trace to %s\n", filename);  in save_trace_to_file()
122 	struct trace_instance *trace = context;  in collect_registered_events()  local
123 	struct trace_seq *s = trace->seq;  in collect_registered_events()
125 	trace->processed_events++;  in collect_registered_events()
146 	struct trace_instance *trace = context;  in collect_missed_events()  local
148 	if (trace->missed_events == UINT64_MAX)  in collect_missed_events()
152 		trace->missed_events += record->missed_events;  in collect_missed_events()
155 		trace->missed_events = UINT64_MAX;  in collect_missed_events()
161  * trace_instance_destroy - destroy and free a rtla trace instance
163 void trace_instance_destroy(struct trace_instance *trace)  in trace_instance_destroy()  argument
165 	if (trace->inst) {  in trace_instance_destroy()
166 		disable_tracer(trace->inst);  in trace_instance_destroy()
167 		destroy_instance(trace->inst);  in trace_instance_destroy()
168 		trace->inst = NULL;  in trace_instance_destroy()
171 	if (trace->seq) {  in trace_instance_destroy()
172 		free(trace->seq);  in trace_instance_destroy()
173 		trace->seq = NULL;  in trace_instance_destroy()
176 	if (trace->tep) {  in trace_instance_destroy()
177 		tep_free(trace->tep);  in trace_instance_destroy()
178 		trace->tep = NULL;  in trace_instance_destroy()
183  * trace_instance_init - create an rtla trace instance
189  * Note that the trace instance is returned disabled. This allows
191  * to the kernel threads, before starting generating trace entries.
193 int trace_instance_init(struct trace_instance *trace, char *tool_name)  in trace_instance_init()  argument
195 	trace->seq = calloc(1, sizeof(*trace->seq));  in trace_instance_init()
196 	if (!trace->seq)  in trace_instance_init()
199 	trace_seq_init(trace->seq);  in trace_instance_init()
201 	trace->inst = create_instance(tool_name);  in trace_instance_init()
202 	if (!trace->inst)  in trace_instance_init()
205 	trace->tep = tracefs_local_events(NULL);  in trace_instance_init()
206 	if (!trace->tep)  in trace_instance_init()
213 	tracefs_trace_off(trace->inst);  in trace_instance_init()
219 	trace->missed_events = 0;  in trace_instance_init()
220 	tracefs_follow_missed_events(trace->inst,  in trace_instance_init()
222 				     trace);  in trace_instance_init()
224 	trace->processed_events = 0;  in trace_instance_init()
229 	trace_instance_destroy(trace);  in trace_instance_init()
236 int trace_instance_start(struct trace_instance *trace)  in trace_instance_start()  argument
238 	return tracefs_trace_on(trace->inst);  in trace_instance_start()
244 int trace_instance_stop(struct trace_instance *trace)  in trace_instance_stop()  argument
246 	return tracefs_trace_off(trace->inst);  in trace_instance_stop()
250  * trace_events_free - free a list of trace events
272  * trace_event_alloc - alloc and parse a single trace event
435  * trace_events_disable - disable all trace events
563  * trace_events_destroy - disable and free all trace events
578 int trace_set_buffer_size(struct trace_instance *trace, int size)  in trace_set_buffer_size()  argument
582 	debug_msg("Setting trace buffer size to %d Kb\n", size);  in trace_set_buffer_size()
583 	retval = tracefs_instance_set_buffer_size(trace->inst, size, -1);  in trace_set_buffer_size()
585 		err_msg("Error setting trace buffer size\n");  in trace_set_buffer_size()