336 struct field_var {  struct
366 	struct field_var		*field_vars[SYNTH_FIELDS_MAX];
372 	struct field_var		*save_vars[SYNTH_FIELDS_MAX];
3372 				       struct field_var **field_vars,  in __update_field_vars()
3381 		struct field_var *field_var = field_vars[i];  in __update_field_vars()  local
3382 		struct hist_field *var = field_var->var;  in __update_field_vars()
3383 		struct hist_field *val = field_var->val;  in __update_field_vars()
3458 static struct field_var *create_field_var(struct hist_trigger_data *hist_data,  in create_field_var()
3465 	struct field_var *field_var;  in create_field_var()  local
3489 	field_var = kzalloc(sizeof(struct field_var), GFP_KERNEL);  in create_field_var()
3490 	if (!field_var) {  in create_field_var()
3497 	field_var->var = var;  in create_field_var()
3498 	field_var->val = val;  in create_field_var()
3500 	return field_var;  in create_field_var()
3502 	field_var = ERR_PTR(ret);  in create_field_var()
3526 static struct field_var *
4054 static void destroy_field_var(struct field_var *field_var)  in destroy_field_var()  argument
4056 	if (!field_var)  in destroy_field_var()
4059 	destroy_hist_field(field_var->var, 0);  in destroy_field_var()
4060 	destroy_hist_field(field_var->val, 0);  in destroy_field_var()
4062 	kfree(field_var);  in destroy_field_var()
4074 			   struct field_var *field_var)  in save_field_var()  argument
4076 	hist_data->field_vars[hist_data->n_field_vars++] = field_var;  in save_field_var()
4078 	if (field_var->val->flags & HIST_FIELD_FL_STRING)  in save_field_var()
4132 	struct field_var *field_var;  in trace_action_create_field_var()  local
4140 	field_var = create_target_field_var(hist_data, system, event, var);  in trace_action_create_field_var()
4142 	if (field_var && !IS_ERR(field_var)) {  in trace_action_create_field_var()
4143 		save_field_var(hist_data, field_var);  in trace_action_create_field_var()
4144 		hist_field = field_var->var;  in trace_action_create_field_var()
4146 		field_var = NULL;  in trace_action_create_field_var()
4171 	destroy_field_var(field_var);  in trace_action_create_field_var()
4286 	struct field_var *field_var;  in action_create()  local
4323 			field_var = create_target_field_var(hist_data, NULL, NULL, param);  in action_create()
4324 			if (IS_ERR(field_var)) {  in action_create()
4327 				ret = PTR_ERR(field_var);  in action_create()
4332 			hist_data->save_vars[hist_data->n_save_vars++] = field_var;  in action_create()
4333 			if (field_var->val->flags & HIST_FIELD_FL_STRING)  in action_create()