1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
|
diff -ur linux-2.6.12.2/drivers/scsi/sd.c linux-2.6.12.2_scsi-idle/drivers/scsi/sd.c
--- linux-2.6.12.2/drivers/scsi/sd.c 2005-08-27 06:12:31.000000000 +0200
+++ linux-2.6.12.2_scsi-idle/drivers/scsi/sd.c 2005-08-27 06:26:50.000000000 +0200
@@ -266,6 +266,9 @@
"count=%d\n", disk->disk_name,
(unsigned long long)block, this_count));
+ /* Update idle-since time */
+ sdp->idle = jiffies;
+
if (!sdp || !scsi_device_online(sdp) ||
block + rq->nr_sectors > get_capacity(disk)) {
SCSI_LOG_HLQUEUE(2, printk("Finishing %ld sectors\n",
@@ -600,6 +603,8 @@
case SCSI_IOCTL_GET_IDLUN:
case SCSI_IOCTL_GET_BUS_NUMBER:
return scsi_ioctl(sdp, cmd, p);
+ case SCSI_IOCTL_IDLE:
+ return (jiffies - sdp->idle) / HZ + 1;
default:
error = scsi_cmd_ioctl(filp, disk, cmd, p);
if (error != -ENOTTY)
diff -ur linux-2.6.12.2/include/scsi/scsi_device.h linux-2.6.12.2_scsi-idle/include/scsi/scsi_device.h
--- linux-2.6.12.2/include/scsi/scsi_device.h 2005-08-27 06:12:44.000000000 +0200
+++ linux-2.6.12.2_scsi-idle/include/scsi/scsi_device.h 2005-08-27 06:27:09.000000000 +0200
@@ -125,6 +125,7 @@
atomic_t ioerr_cnt;
int timeout;
+ unsigned long idle; /* scsi idle time in jiffers */
struct device sdev_gendev;
struct class_device sdev_classdev;
diff -ur linux-2.6.12.2/include/scsi/scsi_ioctl.h linux-2.6.12.2_scsi-idle/include/scsi/scsi_ioctl.h
--- linux-2.6.12.2/include/scsi/scsi_ioctl.h 2005-08-27 06:12:44.000000000 +0200
+++ linux-2.6.12.2_scsi-idle/include/scsi/scsi_ioctl.h 2005-08-28 17:32:17.000000000 +0200
@@ -7,6 +7,7 @@
#define SCSI_IOCTL_SYNC 4 /* Request synchronous parameters */
#define SCSI_IOCTL_START_UNIT 5
#define SCSI_IOCTL_STOP_UNIT 6
+#define SCSI_IOCTL_IDLE 4746 /* get idle time in jiffies */
/* The door lock/unlock constants are compatible with Sun constants for
the cdrom */
#define SCSI_IOCTL_DOORLOCK 0x5380 /* lock the eject mechanism */
|
