rem: func = dtrace_aggregate_walk_valsorted;
add: func = dtrace_aggregate_walk_sorted;
context: dtrace_aggregate_print(dtrace_hdl_t *dtp, FILE *fp,    dtrace_aggregate_walk_f *func){	dt_print_aggdata_t pd;	pd.dtpa_dtp = dtp;	pd.dtpa_fp = fp;	pd.dtpa_allunprint = 1;	if (func == NULL)		func = dtrace_aggregate_walk_valsorted;	if ((*func)(dtp, dt_print_agg, &pd) == -1)		return (dt_set_errno(dtp, dtp->dt_errno));	return (0);}