ret = sort_dimension__add(list, tok, evlist, level);
                        if (ret == -EINVAL) {
                                if (!cacheline_size() && !strncasecmp(tok, "dcacheline", strlen(tok)))
-                                       pr_err("The \"dcacheline\" --sort key needs to know the cacheline size and it couldn't be determined on this system");
+                                       ui__error("The \"dcacheline\" --sort key needs to know the cacheline size and it couldn't be determined on this system");
                                else
-                                       pr_err("Invalid --sort key: `%s'", tok);
+                                       ui__error("Invalid --sort key: `%s'", tok);
                                break;
                        } else if (ret == -ESRCH) {
-                               pr_err("Unknown --sort key: `%s'", tok);
+                               ui__error("Unknown --sort key: `%s'", tok);
                                break;
                        }
                }
                return 0;
 
        if (sort_order[1] == '\0') {
-               pr_err("Invalid --sort key: `+'");
+               ui__error("Invalid --sort key: `+'");
                return -EINVAL;
        }
 
                strp++;
 
        if (!strlen(strp)) {
-               pr_err("Invalid --fields key: `+'");
+               ui__error("Invalid --fields key: `+'");
                goto out;
        }