Roland Dreier e5c0d6ad55 target: Add tracepoints for SCSI commands being processed ... This patch adds tracepoints to the target code for commands being received and being completed, which is quite useful for debugging interactions with initiators. For example, one can do something like the following to watch commands that are completing unsuccessfully: # echo 'scsi_status!=0' > /sys/kernel/debug/tracing/events/target/target_cmd_complete/filter # echo 1 > /sys/kernel/debug/tracing/events/target/target_cmd_complete/enable <run command that fails> # cat /sys/kernel/debug/tracing/trace iscsi_trx-0-1902 [003] ...1 990185.810385: target_cmd_complete: iqn.1993-08.org.debian:01:e51ede6aacfd <- LUN 001 status CHECK CONDITION (sense len 18 / 70 00 05 00 00 00 00 0a 00 00 00 00 20 00 00 00 00 00) 0x95 data_length 512 CDB 95 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 (TA:SIMPLE C:00) (v2: Drop undefined COMPARE_AND_WRITE) Signed-off-by: Roland Dreier <roland@purestorage.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>		2013-07-07 18:36:44 -07:00
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events	target: Add tracepoints for SCSI commands being processed	2013-07-07 18:36:44 -07:00
define_trace.h	treewide: fix comment/printk/variable typos	2012-09-01 10:33:05 -07:00
ftrace.h	tracing: Remove obsolete macro guard _TRACE_PROFILE_INIT	2013-04-12 23:02:33 -04:00
syscall.h	tracing: Cleanup unnecessary function declarations	2012-10-31 16:45:34 -04:00