int x;
        int set=0,clear=0;
        for (x = 0; x < 1000; x++) {
                int start = ccnt_read();
                //gc->set(gc,7,1);
                int end = ccnt_read();
                set += end-start;
                start = ccnt_read();
                //gc->set(gc,7,0);
                end = ccnt_read();
                clear += end-start;
        }
        printk(KERN_ALERT"set %u clear %u\n",set/1000,clear/1000);