diff options
| author | Milan P. Gandhi <mgandhi@redhat.com> | 2019-09-26 10:55:02 +0530 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2019-09-30 23:07:16 -0400 |
| commit | 8ee132b3cb699530a74faba44f6227ad4ead0ea1 (patch) | |
| tree | ed152f809ff3e6f16d23d28d37b09ee04eea7c5e | |
| parent | c3dde2f3fe6aa48ed4650e103d23aac8f9620ddd (diff) | |
| download | linux-8ee132b3cb699530a74faba44f6227ad4ead0ea1.tar.bz2 | |
scsi: core: Log SCSI command age with errors
Couple of users had requested to print the SCSI command age along with
command failure errors. This is a small change, but allows users to get
more important information about the command that was failed, it would help
the users in debugging the command failures:
Link: https://lore.kernel.org/r/20190926052501.GA8352@machine1
Signed-off-by: Milan P. Gandhi <mgandhi@redhat.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
| -rw-r--r-- | drivers/scsi/scsi_logging.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/scsi/scsi_logging.c b/drivers/scsi/scsi_logging.c index c6ed0b12e807..c91fa3feb930 100644 --- a/drivers/scsi/scsi_logging.c +++ b/drivers/scsi/scsi_logging.c @@ -390,6 +390,7 @@ void scsi_print_result(const struct scsi_cmnd *cmd, const char *msg, const char *mlret_string = scsi_mlreturn_string(disposition); const char *hb_string = scsi_hostbyte_string(cmd->result); const char *db_string = scsi_driverbyte_string(cmd->result); + unsigned long cmd_age = (jiffies - cmd->jiffies_at_alloc) / HZ; logbuf = scsi_log_reserve_buffer(&logbuf_len); if (!logbuf) @@ -431,10 +432,15 @@ void scsi_print_result(const struct scsi_cmnd *cmd, const char *msg, if (db_string) off += scnprintf(logbuf + off, logbuf_len - off, - "driverbyte=%s", db_string); + "driverbyte=%s ", db_string); else off += scnprintf(logbuf + off, logbuf_len - off, - "driverbyte=0x%02x", driver_byte(cmd->result)); + "driverbyte=0x%02x ", + driver_byte(cmd->result)); + + off += scnprintf(logbuf + off, logbuf_len - off, + "cmd_age=%lus", cmd_age); + out_printk: dev_printk(KERN_INFO, &cmd->device->sdev_gendev, "%s", logbuf); scsi_log_release_buffer(logbuf); |