Lee Susman b0c1404cb0 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 Change-Id: Id6e16a8c0b2a833c5453ed9923384f641e374a71 Signed-off-by: Lee Susman <lsusman@codeaurora.org> [gbroner@codeaurora.org: fix merge conflict] Signed-off-by: Gilad Broner <gbroner@codeaurora.org> [subhashj@codeaurora.org: resolved merge conflicts and compilation error] Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>		2016-03-22 10:57:53 -07:00
..
events	scsi: ufs: add trace event for ufs commands	2016-03-22 10:57:53 -07:00
define_trace.h	tracing: Allow disabling compilation of specific trace systems	2015-10-20 21:55:44 -04:00
perf.h	tracing: Move non perf code out of perf.h	2015-09-23 09:31:34 -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: Move non perf code out of perf.h	2015-09-23 09:31:34 -04:00
trace_thermal.h	qpnp: Add snapshot of some qpnp, regulator and charger drivers	2016-03-01 12:22:31 -08:00