linux

iv/linux

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Stanley Chu aa5c697988 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>

2020-06-15 23:35:06 -04:00

events

scsi: ufs: Add trace event for UIC commands

2020-06-15 23:35:06 -04:00

bpf_probe.h

bpf: Reliably preserve btf_trace_xxx types

2020-03-02 16:49:55 -08:00

define_trace.h

tracing: introduce TRACE_EVENT_NOP()

2019-04-08 09:22:51 -04:00

perf.h

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net