scsi: ufs: add tracing support

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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>

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subhashj@codeaurora.org 2016-12-22 18:39:51 -08:00 • committed by Martin K. Petersen

parent 66cc820f9c

commit 7ff5ab4736

2 changed files with 258 additions and 12 deletions

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85

drivers/scsi/ufs/ufshcd.c

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185

include/trace/events/ufs.h

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