Lee Susman 1a07f2d96e scsi: ufs: add trace event for ufs commands ... Use the ftrace infrastructure to conditionally trace ufs command events. New trace event is created, which samples the following ufs command data: - device name - optional identification string - task tag - doorbell register - number of transfer bytes - interrupt status register - request start LBA - command opcode Currently we only fully trace read(10) and write(10) commands. All other commands which pass through ufshcd_send_command() will be printed with "-1" in the lba and transfer_len fields. Usage: echo 1 > /sys/kernel/debug/tracing/events/ufs/enable cat /sys/kernel/debug/tracing/trace_pipe Signed-off-by: Lee Susman <lsusman@codeaurora.org> Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>		2017-01-05 18:10:04 -05:00
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events	scsi: ufs: add trace event for ufs commands	2017-01-05 18:10:04 -05:00
define_trace.h	tracing: Introduce TRACE_EVENT_FN_COND macro	2015-12-23 14:27:21 -05:00
perf.h	tracing: Use outer () on __get_str() definition	2016-07-15 15:50:58 -04:00
syscall.h	tracing: Rename ftrace_event_{call,class} to trace_event_{call,class}	2015-05-13 14:06:10 -04:00
trace_events.h	tracing: Use outer () on __get_str() definition	2016-07-15 15:50:58 -04:00