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c2332b0049
This commit enhances iscsi initiator modules to capture iscsi debug messages using linux kernel tracepoint facility: https://www.kernel.org/doc/Documentation/trace/tracepoints.txt The following tracepoint events have been created under the iscsi tracepoint event group: iscsi_dbg_conn - to capture connection debug messages (libiscsi module) iscsi_dbg_session - to capture session debug messages (libiscsi module) iscsi_dbg_eh - to capture error handling debug messages (libiscsi module) iscsi_dbg_tcp - to capture iscsi tcp debug messages (libiscsi_tcp module) iscsi_dbg_sw_tcp - to capture iscsi sw tcp debug messages (iscsi_tcp module) iscsi_dbg_trans_session - to cpature iscsi transsport sess debug messages (scsi_transport_iscsi module) iscsi_dbg_trans_conn - to capture iscsi transport conn debug messages (scsi_transport_iscsi module) [mkp: typos] Signed-off-by: Fred Herard <fred.herard@oracle.com> Reviewed-by: Rajan Shanmugavelu <rajan.shanmugavelu@oracle.com> Reviewed-by: Lee Duncan <lduncan@suse.com> Reviewed-by: Douglas Gilbert <dgilbert@interlog.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
107 lines
2.3 KiB
C
107 lines
2.3 KiB
C
#undef TRACE_SYSTEM
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#define TRACE_SYSTEM iscsi
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#if !defined(_TRACE_ISCSI_H) || defined(TRACE_HEADER_MULTI_READ)
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#define _TRACE_ISCSI_H
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#include <linux/tracepoint.h>
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/* max debug message length */
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#define ISCSI_MSG_MAX 256
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/*
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* Declare tracepoint helper function.
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*/
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void iscsi_dbg_trace(void (*trace)(struct device *dev, struct va_format *),
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struct device *dev, const char *fmt, ...);
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/*
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* Declare event class for iscsi debug messages.
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*/
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DECLARE_EVENT_CLASS(iscsi_log_msg,
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TP_PROTO(struct device *dev, struct va_format *vaf),
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TP_ARGS(dev, vaf),
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TP_STRUCT__entry(
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__string(dname, dev_name(dev) )
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__dynamic_array(char, msg, ISCSI_MSG_MAX )
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),
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TP_fast_assign(
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__assign_str(dname, dev_name(dev));
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vsnprintf(__get_str(msg), ISCSI_MSG_MAX, vaf->fmt, *vaf->va);
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),
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TP_printk("%s: %s",__get_str(dname), __get_str(msg)
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)
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);
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/*
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* Define event to capture iscsi connection debug messages.
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*/
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DEFINE_EVENT(iscsi_log_msg, iscsi_dbg_conn,
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TP_PROTO(struct device *dev, struct va_format *vaf),
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TP_ARGS(dev, vaf)
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);
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/*
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* Define event to capture iscsi session debug messages.
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*/
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DEFINE_EVENT(iscsi_log_msg, iscsi_dbg_session,
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TP_PROTO(struct device *dev, struct va_format *vaf),
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TP_ARGS(dev, vaf)
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);
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/*
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* Define event to capture iscsi error handling debug messages.
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*/
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DEFINE_EVENT(iscsi_log_msg, iscsi_dbg_eh,
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TP_PROTO(struct device *dev, struct va_format *vaf),
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TP_ARGS(dev, vaf)
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);
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/*
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* Define event to capture iscsi tcp debug messages.
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*/
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DEFINE_EVENT(iscsi_log_msg, iscsi_dbg_tcp,
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TP_PROTO(struct device *dev, struct va_format *vaf),
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TP_ARGS(dev, vaf)
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);
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/*
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* Define event to capture iscsi sw tcp debug messages.
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*/
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DEFINE_EVENT(iscsi_log_msg, iscsi_dbg_sw_tcp,
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TP_PROTO(struct device *dev, struct va_format *vaf),
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TP_ARGS(dev, vaf)
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);
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/*
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* Define event to capture iscsi transport session debug messages.
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*/
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DEFINE_EVENT(iscsi_log_msg, iscsi_dbg_trans_session,
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TP_PROTO(struct device *dev, struct va_format *vaf),
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TP_ARGS(dev, vaf)
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);
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/*
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* Define event to capture iscsi transport connection debug messages.
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*/
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DEFINE_EVENT(iscsi_log_msg, iscsi_dbg_trans_conn,
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TP_PROTO(struct device *dev, struct va_format *vaf),
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TP_ARGS(dev, vaf)
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);
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#endif /* _TRACE_ISCSI_H */
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/* This part must be outside protection */
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#include <trace/define_trace.h>
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