+static bool prefix_timestamp(void) {
+
+ static int cached_printk_time = -1;
+
+ if (_unlikely_(cached_printk_time < 0)) {
+ _cleanup_free_ char *p = NULL;
+
+ cached_printk_time =
+ read_one_line_file("/sys/module/printk/parameters/time", &p) >= 0
+ && parse_boolean(p) > 0;
+ }
+
+ return cached_printk_time;
+}
+