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[SCSI] scsi_trace: Enhance SCSI command tracing

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Various SCSI trace enhancements:

 - Display data and protection information scatterlist lengths in the
   trace output

 - Add support for VERIFY and WRITE SAME commands and decode the UNMAP
   bit if applicable

 - Add decoding of the PROTECT field for READ/VERIFY/WRITE/WRITE SAME
   commands as well as the EXPECTED INITIAL REFERENCE TAG field for
   their 32-byte variants

 - Decode READ CAPACITY(16), GET LBA STATUS, and UNMAP

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
Martin K. Petersen 2010-03-23 01:16:57 -04:00 • committed by James Bottomley
parent bf81623542
commit c446c1f990
2 changed files with 136 additions and 20 deletions
Download patch file Download diff file Expand all files Collapse all files

33
include/trace/events/scsi.h
View file

@ -200,6 +200,8 @@ TRACE_EVENT(scsi_dispatch_cmd_start,
__field( unsigned int, lun )
__field( unsigned int, opcode )
__field( unsigned int, cmd_len )
__field( unsigned int, data_sglen )
__field( unsigned int, prot_sglen )
__dynamic_array(unsigned char, cmnd, cmd->cmd_len)
),
@ -210,12 +212,16 @@ TRACE_EVENT(scsi_dispatch_cmd_start,
__entry->lun = cmd->device->lun;
__entry->opcode = cmd->cmnd[0];
__entry->cmd_len = cmd->cmd_len;
__entry->data_sglen = scsi_sg_count(cmd);
__entry->prot_sglen = scsi_prot_sg_count(cmd);
memcpy(__get_dynamic_array(cmnd), cmd->cmnd, cmd->cmd_len);
),
TP_printk("host_no=%u channel=%u id=%u lun=%u cmnd=(%s %s raw=%s)",
TP_printk("host_no=%u channel=%u id=%u lun=%u data_sgl=%u prot_sgl=%u" \
" cmnd=(%s %s raw=%s)",
__entry->host_no, __entry->channel, __entry->id,
__entry->lun, show_opcode_name(__entry->opcode),
__entry->lun, __entry->data_sglen, __entry->prot_sglen,
show_opcode_name(__entry->opcode),
__parse_cdb(__get_dynamic_array(cmnd), __entry->cmd_len),
__print_hex(__get_dynamic_array(cmnd), __entry->cmd_len))
);
@ -234,6 +240,8 @@ TRACE_EVENT(scsi_dispatch_cmd_error,
__field( int, rtn )
__field( unsigned int, opcode )
__field( unsigned int, cmd_len )
__field( unsigned int, data_sglen )
__field( unsigned int, prot_sglen )
__dynamic_array(unsigned char, cmnd, cmd->cmd_len)
),
@ -245,13 +253,16 @@ TRACE_EVENT(scsi_dispatch_cmd_error,
__entry->rtn = rtn;
__entry->opcode = cmd->cmnd[0];
__entry->cmd_len = cmd->cmd_len;
__entry->data_sglen = scsi_sg_count(cmd);
__entry->prot_sglen = scsi_prot_sg_count(cmd);
memcpy(__get_dynamic_array(cmnd), cmd->cmnd, cmd->cmd_len);
),
TP_printk("host_no=%u channel=%u id=%u lun=%u cmnd=(%s %s raw=%s)"
" rtn=%d",
TP_printk("host_no=%u channel=%u id=%u lun=%u data_sgl=%u prot_sgl=%u" \
" cmnd=(%s %s raw=%s) rtn=%d",
__entry->host_no, __entry->channel, __entry->id,
__entry->lun, show_opcode_name(__entry->opcode),
__entry->lun, __entry->data_sglen, __entry->prot_sglen,
show_opcode_name(__entry->opcode),
__parse_cdb(__get_dynamic_array(cmnd), __entry->cmd_len),
__print_hex(__get_dynamic_array(cmnd), __entry->cmd_len),
__entry->rtn)
@ -271,6 +282,8 @@ DECLARE_EVENT_CLASS(scsi_cmd_done_timeout_template,
__field( int, result )
__field( unsigned int, opcode )
__field( unsigned int, cmd_len )
__field( unsigned int, data_sglen )
__field( unsigned int, prot_sglen )
__dynamic_array(unsigned char, cmnd, cmd->cmd_len)
),
@ -282,13 +295,17 @@ DECLARE_EVENT_CLASS(scsi_cmd_done_timeout_template,
__entry->result = cmd->result;
__entry->opcode = cmd->cmnd[0];
__entry->cmd_len = cmd->cmd_len;
__entry->data_sglen = scsi_sg_count(cmd);
__entry->prot_sglen = scsi_prot_sg_count(cmd);
memcpy(__get_dynamic_array(cmnd), cmd->cmnd, cmd->cmd_len);
),
TP_printk("host_no=%u channel=%u id=%u lun=%u cmnd=(%s %s raw=%s) "
"result=(driver=%s host=%s message=%s status=%s)",
TP_printk("host_no=%u channel=%u id=%u lun=%u data_sgl=%u " \
"prot_sgl=%u cmnd=(%s %s raw=%s) result=(driver=%s host=%s " \
"message=%s status=%s)",
__entry->host_no, __entry->channel, __entry->id,
__entry->lun, show_opcode_name(__entry->opcode),
__entry->lun, __entry->data_sglen, __entry->prot_sglen,
show_opcode_name(__entry->opcode),
__parse_cdb(__get_dynamic_array(cmnd), __entry->cmd_len),
__print_hex(__get_dynamic_array(cmnd), __entry->cmd_len),
show_driverbyte_name(((__entry->result) >> 24) & 0xff),