kernel/trace/trace_events_hist.c

175 	char				*system;
775 	const char *system = NULL, *name = NULL;
789 		system = call->class->system;
790 		if (system) {
793 				system = NULL;
797 	if (system)
798 		snprintf(last_cmd_loc, MAX_FILTER_STR_VAL, HIST_PREFIX "%s:%s", system, name);
1148 					      char *system,
1156 	if (system)
1157 		return find_event_file(tr, system, event_name);
1211 			char *system = data->match_data.event_system;
1214 			file = find_var_file(tr, system, event_name, var_name);
1233 					 char *system,
1241 	if (!system || !event_name) {
1249 	file = find_var_file(tr, system, event_name, var_name);
1343 		if (field->system) {
1346 			strcat(full_name, field->system);
1913 	kfree(hist_field->system);
2093 			char *system, char *event_name)
2104 	if (system) {
2105 		ref_field->system = kstrdup(system, GFP_KERNEL);
2106 		if (!ref_field->system)
2140 	kfree(ref_field->system);
2141 	ref_field->system = NULL;
2170  * @system: The optional system string
2183 					 char *system, char *event_name)
2203 		if (init_var_ref(ref_field, var_field, system, event_name)) {
2244 				 char *system, char *event_name,
2249 	if (system && event_name) {
2252 		if (strcmp(system, call->class->system) != 0)
2259 	if (!!system != !!event_name)
2271 					char *system, char *event_name,
2282 	var_field = find_event_var(hist_data, system, event_name, var_name);
2285 					   system, event_name);
2411 	if (init_var_ref(alias, var_ref, var_ref->system, var_ref->event_name)) {
2913 					   char *system, char *event_name)
2917 	file = __find_event_file(tr, system, event_name);
2926 			 char *system, char *event_name, char *field_name)
2938 	event_var = find_event_var(target_hist_data, system, event_name, synthetic_name);
3105 		if (strcmp(subsys_name, call->class->system) != 0)
3310 		if (strcmp(subsys_name, call->class->system) != 0)
3899 		      char *system, char *event, char *var)
3906 	hist_field = find_target_event_var(hist_data, system, event, var);
3908 		if (!system && data->handler == HANDLER_ONMATCH) {
3909 			system = data->match_data.event_system;
3913 		hist_field = find_event_var(hist_data, system, event, var);
3924 			      struct action_data *data, char *system,
3936 	field_var = create_target_field_var(hist_data, system, event, var);
3944 		 * If no explicit system.event is specified, default to
3945 		 * looking for fields on the onmatch(system.event.xxx)
3948 		if (!system && data->handler == HANDLER_ONMATCH) {
3949 			system = data->match_data.event_system;
3962 		hist_field = create_field_var_hist(hist_data, system, event, var);
3978 	char *event_name, *param, *system = NULL;
4014 		system = strsep(&param, ".");
4016 			param = (char *)system;
4017 			system = event_name = NULL;
4029 							   system, event_name,
4034 								   system,
4046 						 system, event_name);
5697 		if (field->system)
5698 			seq_printf(m, "      system: %s\n", field->system);