This patch enhances SCSI error printing by:
- Making use of scsi_print_result() in the completion functions.
- Having scmd_printk() output the disk name (when applicable).
Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
---
drivers/scsi/scsi.c | 47 ++++++++++++++++-----------------------------
drivers/scsi/scsi_lib.c | 4 ---
include/scsi/scsi_device.h | 8 +++++--
3 files changed, 24 insertions(+), 35 deletions(-)
Index: scsi-misc-2.6/drivers/scsi/scsi_lib.c
===================================================================
--- scsi-misc-2.6.orig/drivers/scsi/scsi_lib.c
+++ scsi-misc-2.6/drivers/scsi/scsi_lib.c
@@ -968,9 +968,7 @@ void scsi_io_completion(struct scsi_cmnd
}
if (result) {
if (!(req->cmd_flags & REQ_QUIET)) {
- scmd_printk(KERN_INFO, cmd,
- "SCSI error: return code = 0x%08x\n",
- result);
+ scsi_print_result(cmd);
if (driver_byte(result) & DRIVER_SENSE)
scsi_print_sense("", cmd);
}
Index: scsi-misc-2.6/include/scsi/scsi_device.h
===================================================================
--- scsi-misc-2.6.orig/include/scsi/scsi_device.h
+++ scsi-misc-2.6/include/scsi/scsi_device.h
@@ -5,6 +5,7 @@
#include <linux/list.h>
#include <linux/spinlock.h>
#include <linux/workqueue.h>
+#include <linux/blkdev.h>
#include <asm/atomic.h>
struct request_queue;
@@ -153,8 +154,11 @@ struct scsi_device {
#define sdev_printk(prefix, sdev, fmt, a...) \
dev_printk(prefix, &(sdev)->sdev_gendev, fmt, ##a)
-#define scmd_printk(prefix, scmd, fmt, a...) \
- dev_printk(prefix, &(scmd)->device->sdev_gendev, fmt, ##a)
+#define scmd_printk(prefix, scmd, fmt, a...) \
+ (scmd)->request->rq_disk ? \
+ sdev_printk(prefix, (scmd)->device, "[%s] " fmt, \
+ (scmd)->request->rq_disk->disk_name, ##a) : \
+ sdev_printk(prefix, (scmd)->device, fmt, ##a)
enum scsi_target_state {
STARGET_RUNNING = 1,
Index: scsi-misc-2.6/drivers/scsi/scsi.c
===================================================================
--- scsi-misc-2.6.orig/drivers/scsi/scsi.c
+++ scsi-misc-2.6/drivers/scsi/scsi.c
@@ -344,7 +344,6 @@ void scsi_destroy_command_freelist(struc
void scsi_log_send(struct scsi_cmnd *cmd)
{
unsigned int level;
- struct scsi_device *sdev;
/*
* If ML QUEUE log level is greater than or equal to:
@@ -361,22 +360,17 @@ void scsi_log_send(struct scsi_cmnd *cmd
level = SCSI_LOG_LEVEL(SCSI_LOG_MLQUEUE_SHIFT,
SCSI_LOG_MLQUEUE_BITS);
if (level > 1) {
- sdev = cmd->device;
- sdev_printk(KERN_INFO, sdev, "send ");
+ scmd_printk(KERN_INFO, cmd, "Send: ");
if (level > 2)
printk("0x%p ", cmd);
- /*
- * spaces to match disposition and cmd->result
- * output in scsi_log_completion.
- */
- printk(" ");
+ printk("\n");
scsi_print_command(cmd);
if (level > 3) {
printk(KERN_INFO "buffer = 0x%p, bufflen = %d,"
" done = 0x%p, queuecommand 0x%p\n",
cmd->request_buffer, cmd->request_bufflen,
cmd->done,
- sdev->host->hostt->queuecommand);
+ cmd->device->host->hostt->queuecommand);
}
}
@@ -386,7 +380,6 @@ void scsi_log_send(struct scsi_cmnd *cmd
void scsi_log_completion(struct scsi_cmnd *cmd, int disposition)
{
unsigned int level;
- struct scsi_device *sdev;
/*
* If ML COMPLETE log level is greater than or equal to:
@@ -405,8 +398,7 @@ void scsi_log_completion(struct scsi_cmn
SCSI_LOG_MLCOMPLETE_BITS);
if (((level > 0) && (cmd->result || disposition != SUCCESS)) ||
(level > 1)) {
- sdev = cmd->device;
- sdev_printk(KERN_INFO, sdev, "done ");
+ scmd_printk(KERN_INFO, cmd, "Done: ");
if (level > 2)
printk("0x%p ", cmd);
/*
@@ -415,40 +407,35 @@ void scsi_log_completion(struct scsi_cmn
*/
switch (disposition) {
case SUCCESS:
- printk("SUCCESS");
+ printk("SUCCESS\n");
break;
case NEEDS_RETRY:
- printk("RETRY ");
+ printk("RETRY\n");
break;
case ADD_TO_MLQUEUE:
- printk("MLQUEUE");
+ printk("MLQUEUE\n");
break;
case FAILED:
- printk("FAILED ");
+ printk("FAILED\n");
break;
case TIMEOUT_ERROR:
/*
* If called via scsi_times_out.
*/
- printk("TIMEOUT");
+ printk("TIMEOUT\n");
break;
default:
- printk("UNKNOWN");
+ printk("UNKNOWN\n");
}
- printk(" %8x ", cmd->result);
+ scsi_print_result(cmd);
scsi_print_command(cmd);
- if (status_byte(cmd->result) & CHECK_CONDITION) {
- /*
- * XXX The scsi_print_sense formatting/prefix
- * doesn't match this function.
- */
+ if (status_byte(cmd->result) & CHECK_CONDITION)
scsi_print_sense("", cmd);
- }
- if (level > 3) {
- printk(KERN_INFO "scsi host busy %d failed %d\n",
- sdev->host->host_busy,
- sdev->host->host_failed);
- }
+ if (level > 3)
+ scmd_printk(KERN_INFO, cmd,
+ "scsi host busy %d failed %d\n",
+ cmd->device->host->host_busy,
+ cmd->device->host->host_failed);
}
}
}
-
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