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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>
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Fred Herard