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(parent: 16bc4a7) | patch
scsi: ufs: add tracing support
authorsubhashj@codeaurora.org <subhashj@codeaurora.org>
Fri, 23 Dec 2016 02:39:51 +0000 (18:39 -0800)
committerMartin K. Petersen <martin.petersen@oracle.com>
Thu, 5 Jan 2017 23:10:03 +0000 (18:10 -0500)
commit5f8414b9bddb9d7edcfbf921eca000fde34f677a
treef88c198a45aae3c4f487e35357ffd5998921ebeatree | snapshot
parent16bc4a74ddabfbb63434d7845317110ba7603974commit | diff
scsi: ufs: add tracing support

This change adds the ftrace support for following:
1. UFS initialization time
2. Clock gating states
3. Clock scaling states
4. Power management APIs latency
5. BKOPs enable/disable

Usage:
echo 1 > /sys/kernel/debug/tracing/events/ufs/enable
cat /sys/kernel/debug/tracing/trace_pipe

Reviewed-by: Sahitya Tummala <stummala@codeaurora.org>
Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
drivers/scsi/ufs/ufshcd.c diff | blob | history
include/trace/events/ufs.h [new file with mode: 0644] blob
Linux Kernel Source Tree.