759 static char *last_cmd;  variable
764 	if (!str || !last_cmd)  in errpos()
767 	return err_pos(last_cmd, str);  in errpos()
781 	kfree(last_cmd);  in last_cmd_set()
782 	last_cmd = kzalloc(len, GFP_KERNEL);  in last_cmd_set()
783 	if (!last_cmd)  in last_cmd_set()
786 	strcpy(last_cmd, HIST_PREFIX);  in last_cmd_set()
789 	strncat(last_cmd, str, len);  in last_cmd_set()
807 	if (!last_cmd)  in hist_err()
810 	tracing_log_err(tr, last_cmd_loc, last_cmd, err_text,  in hist_err()
816 	if (last_cmd)  in hist_err_clear()
817 		last_cmd[0] = '\0';  in hist_err_clear()