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Date: Wed, 13 May 2015 12:13:53 -0700
From: Rajat Jain <rajatxjain@...il.com>
To: Rajat Jain <rajatja@...gle.com>
Cc: James Bottomley <James.Bottomley@...senpartnership.com>,
Steven Rostedt <rostedt@...dmis.org>,
Ingo Molnar <mingo@...hat.com>, Christoph Hellwig <hch@....de>,
Hannes Reinecke <hare@...e.de>,
Robert Elliott <elliott@...com>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
linux-scsi@...r.kernel.org
Subject: Re: [PATCH] trace/events/scsi: Add SCSI tag to scsi cmd trace events
Sorry, had mis-spelled the SCSI mailing list email address. Fixed it
now and added them to this thread.
(Also sent a copy of this patch separately to them)
On Wed, May 13, 2015 at 12:06 PM, Rajat Jain <rajatja@...gle.com> wrote:
> Print the tag along with other information while tracing a command.
> This is useful for tracing & debugging tagged commands.
>
> (There are checkpatch errors about spacing, that I did not fix to
> stay consistent with the code immediately above and below in
> that file).
>
> Signed-off-by: Rajat Jain <rajatja@...gle.com>
> ---
> include/trace/events/scsi.h | 20 +++++++++++++-------
> 1 file changed, 13 insertions(+), 7 deletions(-)
>
> diff --git a/include/trace/events/scsi.h b/include/trace/events/scsi.h
> index 079bd10..d61d3d1 100644
> --- a/include/trace/events/scsi.h
> +++ b/include/trace/events/scsi.h
> @@ -211,6 +211,7 @@ TRACE_EVENT(scsi_dispatch_cmd_start,
> __field( unsigned int, lun )
> __field( unsigned int, opcode )
> __field( unsigned int, cmd_len )
> + __field( int, tag )
> __field( unsigned int, data_sglen )
> __field( unsigned int, prot_sglen )
> __field( unsigned char, prot_op )
> @@ -224,6 +225,7 @@ TRACE_EVENT(scsi_dispatch_cmd_start,
> __entry->lun = cmd->device->lun;
> __entry->opcode = cmd->cmnd[0];
> __entry->cmd_len = cmd->cmd_len;
> + __entry->tag = cmd->request->tag;
> __entry->data_sglen = scsi_sg_count(cmd);
> __entry->prot_sglen = scsi_prot_sg_count(cmd);
> __entry->prot_op = scsi_get_prot_op(cmd);
> @@ -231,10 +233,10 @@ TRACE_EVENT(scsi_dispatch_cmd_start,
> ),
>
> TP_printk("host_no=%u channel=%u id=%u lun=%u data_sgl=%u prot_sgl=%u" \
> - " prot_op=%s cmnd=(%s %s raw=%s)",
> + " prot_op=%s tag=%d cmnd=(%s %s raw=%s)",
> __entry->host_no, __entry->channel, __entry->id,
> __entry->lun, __entry->data_sglen, __entry->prot_sglen,
> - show_prot_op_name(__entry->prot_op),
> + show_prot_op_name(__entry->prot_op), __entry->tag,
> show_opcode_name(__entry->opcode),
> __parse_cdb(__get_dynamic_array(cmnd), __entry->cmd_len),
> __print_hex(__get_dynamic_array(cmnd), __entry->cmd_len))
> @@ -254,6 +256,7 @@ TRACE_EVENT(scsi_dispatch_cmd_error,
> __field( int, rtn )
> __field( unsigned int, opcode )
> __field( unsigned int, cmd_len )
> + __field( int, tag )
> __field( unsigned int, data_sglen )
> __field( unsigned int, prot_sglen )
> __field( unsigned char, prot_op )
> @@ -268,6 +271,7 @@ TRACE_EVENT(scsi_dispatch_cmd_error,
> __entry->rtn = rtn;
> __entry->opcode = cmd->cmnd[0];
> __entry->cmd_len = cmd->cmd_len;
> + __entry->tag = cmd->request->tag;
> __entry->data_sglen = scsi_sg_count(cmd);
> __entry->prot_sglen = scsi_prot_sg_count(cmd);
> __entry->prot_op = scsi_get_prot_op(cmd);
> @@ -275,10 +279,10 @@ TRACE_EVENT(scsi_dispatch_cmd_error,
> ),
>
> TP_printk("host_no=%u channel=%u id=%u lun=%u data_sgl=%u prot_sgl=%u" \
> - " prot_op=%s cmnd=(%s %s raw=%s) rtn=%d",
> + " prot_op=%s tag=%d cmnd=(%s %s raw=%s) rtn=%d",
> __entry->host_no, __entry->channel, __entry->id,
> __entry->lun, __entry->data_sglen, __entry->prot_sglen,
> - show_prot_op_name(__entry->prot_op),
> + show_prot_op_name(__entry->prot_op), __entry->tag,
> show_opcode_name(__entry->opcode),
> __parse_cdb(__get_dynamic_array(cmnd), __entry->cmd_len),
> __print_hex(__get_dynamic_array(cmnd), __entry->cmd_len),
> @@ -299,6 +303,7 @@ DECLARE_EVENT_CLASS(scsi_cmd_done_timeout_template,
> __field( int, result )
> __field( unsigned int, opcode )
> __field( unsigned int, cmd_len )
> + __field( int, tag )
> __field( unsigned int, data_sglen )
> __field( unsigned int, prot_sglen )
> __field( unsigned char, prot_op )
> @@ -313,6 +318,7 @@ DECLARE_EVENT_CLASS(scsi_cmd_done_timeout_template,
> __entry->result = cmd->result;
> __entry->opcode = cmd->cmnd[0];
> __entry->cmd_len = cmd->cmd_len;
> + __entry->tag = cmd->request->tag;
> __entry->data_sglen = scsi_sg_count(cmd);
> __entry->prot_sglen = scsi_prot_sg_count(cmd);
> __entry->prot_op = scsi_get_prot_op(cmd);
> @@ -320,11 +326,11 @@ DECLARE_EVENT_CLASS(scsi_cmd_done_timeout_template,
> ),
>
> TP_printk("host_no=%u channel=%u id=%u lun=%u data_sgl=%u " \
> - "prot_sgl=%u prot_op=%s cmnd=(%s %s raw=%s) result=(driver=" \
> - "%s host=%s message=%s status=%s)",
> + "prot_sgl=%u prot_op=%s tag=%d cmnd=(%s %s raw=%s) " \
> + "result=(driver=%s host=%s message=%s status=%s)",
> __entry->host_no, __entry->channel, __entry->id,
> __entry->lun, __entry->data_sglen, __entry->prot_sglen,
> - show_prot_op_name(__entry->prot_op),
> + show_prot_op_name(__entry->prot_op), __entry->tag,
> show_opcode_name(__entry->opcode),
> __parse_cdb(__get_dynamic_array(cmnd), __entry->cmd_len),
> __print_hex(__get_dynamic_array(cmnd), __entry->cmd_len),
> --
> 2.2.0.rc0.207.ga3a616c
>
--
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