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scsi: pm80xx: Add pm80xx_mpi_build_cmd() tracepoint 

pm8001_mpi_build_cmd() prepares and sends all commands to a controller.
Having pm80xx_mpi_build_cmd tracepoint can help us with latency issues.

this patch depends on patch "scsi: pm80xx: Add tracepoints".

Link: https://lore.kernel.org/r/20211115215750.131696-3-changyuanl@google.com
Acked-by: Jack Wang <jinpu.wang@ionos.com>
Co-developed-by: Igor Pylypiv <ipylypiv@google.com>
Signed-off-by: Igor Pylypiv <ipylypiv@google.com>
Signed-off-by: Changyuan Lyu <changyuanl@google.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Changyuan Lyu 2021-11-15 13:57:50 -08:00 committed by Martin K. Petersen
parent 8ceddda38d
commit 0137b129f2
2 changed files with 33 additions and 0 deletions
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5
drivers/scsi/pm8001/pm8001_hwi.c
View File

@ -42,6 +42,7 @@
#include "pm8001_hwi.h"
#include "pm8001_chips.h"
#include "pm8001_ctl.h"
#include "pm80xx_tracepoints.h"
/**
* read_main_config_table - read the configure table and save it.
@ -1324,6 +1325,10 @@ int pm8001_mpi_build_cmd(struct pm8001_hba_info *pm8001_ha,
unsigned long flags;
int q_index = circularQ - pm8001_ha->inbnd_q_tbl;
int rv;
u32 htag = le32_to_cpu(*(__le32 *)payload);
trace_pm80xx_mpi_build_cmd(pm8001_ha->id, opCode, htag, q_index,
circularQ->producer_idx, le32_to_cpu(circularQ->consumer_index));
if (WARN_ON(q_index >= pm8001_ha->max_q_num))
return -EINVAL;

28
drivers/scsi/pm8001/pm80xx_tracepoints.h
View File

@ -75,6 +75,34 @@ TRACE_EVENT(pm80xx_request_complete,
__entry->running_req)
);
TRACE_EVENT(pm80xx_mpi_build_cmd,
TP_PROTO(u32 id, u32 opc, u32 htag, u32 qi, u32 pi, u32 ci),
TP_ARGS(id, opc, htag, qi, pi, ci),
TP_STRUCT__entry(
__field(u32, id)
__field(u32, opc)
__field(u32, htag)
__field(u32, qi)
__field(u32, pi)
__field(u32, ci)
),
TP_fast_assign(
__entry->id = id;
__entry->opc = opc;
__entry->htag = htag;
__entry->qi = qi;
__entry->pi = pi;
__entry->ci = ci;
),
TP_printk("ctlr_id = %u opc = %#x htag = %#x QI = %u PI = %u CI = %u",
__entry->id, __entry->opc, __entry->htag, __entry->qi,
__entry->pi, __entry->ci)
);
#endif /* _TRACE_PM80XX_H_ */
#undef TRACE_INCLUDE_PATH