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| author | Stanley Chu <stanley.chu@mediatek.com> | 2020-06-15 15:22:35 +0800 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2020-06-15 23:35:06 -0400 |
| commit | aa5c697988b4c7e1077de1e2eb2298114d531736 (patch) | |
| tree | 2f7317121be07317385190085de9bd7975f369fb /drivers/scsi/ufs/ufshcd.h | |
| parent | 7a7df52dbc71d2aa4272664ebc9ad44ab317ae53 (diff) | |
scsi: ufs: Add trace event for UIC commands
Use the ftrace infrastructure to conditionally trace UFS UIC command
events.
New trace event "ufshcd_uic_command" is created, which samples the
following UFS UIC command data:
- Device name
- Optional identification string
- UIC command opcode
- UIC command argument1
- UIC command argument2
- UIC command argement3
Usage:
echo 1 > /sys/kernel/debug/tracing/events/ufs/enable
cat /sys/kernel/debug/tracing/trace_pipe
Link: https://lore.kernel.org/r/20200615072235.23042-3-stanley.chu@mediatek.com
Acked-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/ufs/ufshcd.h')
0 files changed, 0 insertions, 0 deletions