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scsi: pm80xx: Add tracepoints

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Tracepoints for tracking controller and ATA commands issued and completed.

Link: https://lore.kernel.org/r/20211115215750.131696-2-changyuanl@google.com
Acked-by: Jack Wang <jinpu.wang@ionos.com>
Co-developed-by: Akshat Jain <akshatzen@google.com>
Signed-off-by: Akshat Jain <akshatzen@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 13:57:49 -08:00 committed by Martin K. Petersen
parent 853615582d
commit 8ceddda38d
5 changed files with 123 additions and 2 deletions
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7
drivers/scsi/pm8001/Makefile
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@ -6,9 +6,12 @@
obj-$(CONFIG_SCSI_PM8001) += pm80xx.o
CFLAGS_pm80xx_tracepoints.o := -I$(src)
pm80xx-y += pm8001_init.o \
pm8001_sas.o \
pm8001_ctl.o \
pm8001_hwi.o \
pm80xx_hwi.o
pm80xx_hwi.o \
pm80xx_tracepoints.o

16
drivers/scsi/pm8001/pm8001_sas.c
View File

@ -40,6 +40,7 @@
#include <linux/slab.h>
#include "pm8001_sas.h"
#include "pm80xx_tracepoints.h"
/**
* pm8001_find_tag - from sas task to find out tag that belongs to this task
@ -527,6 +528,9 @@ int pm8001_queue_command(struct sas_task *task, gfp_t gfp_flags)
void pm8001_ccb_task_free(struct pm8001_hba_info *pm8001_ha,
struct sas_task *task, struct pm8001_ccb_info *ccb, u32 ccb_idx)
{
struct ata_queued_cmd *qc;
struct pm8001_device *pm8001_dev;
if (!ccb->task)
return;
if (!sas_protocol_ata(task->task_proto))
@ -549,6 +553,18 @@ void pm8001_ccb_task_free(struct pm8001_hba_info *pm8001_ha,
/* do nothing */
break;
}
if (sas_protocol_ata(task->task_proto)) {
// For SCSI/ATA commands uldd_task points to ata_queued_cmd
qc = task->uldd_task;
pm8001_dev = ccb->device;
trace_pm80xx_request_complete(pm8001_ha->id,
pm8001_dev ? pm8001_dev->attached_phy : PM8001_MAX_PHYS,
ccb_idx, 0 /* ctlr_opcode not known */,
qc ? qc->tf.command : 0, // ata opcode
pm8001_dev ? atomic_read(&pm8001_dev->running_req) : -1);
}
task->lldd_task = NULL;
ccb->task = NULL;
ccb->ccb_tag = 0xFFFFFFFF;

7
drivers/scsi/pm8001/pm80xx_hwi.c
View File

@ -42,6 +42,7 @@
#include "pm80xx_hwi.h"
#include "pm8001_chips.h"
#include "pm8001_ctl.h"
#include "pm80xx_tracepoints.h"
#define SMP_DIRECT 1
#define SMP_INDIRECT 2
@ -4530,6 +4531,7 @@ static int pm80xx_chip_sata_req(struct pm8001_hba_info *pm8001_ha,
struct sas_task *task = ccb->task;
struct domain_device *dev = task->dev;
struct pm8001_device *pm8001_ha_dev = dev->lldd_dev;
struct ata_queued_cmd *qc = task->uldd_task;
u32 tag = ccb->ccb_tag;
int ret;
u32 q_index, cpu_id;
@ -4749,6 +4751,11 @@ static int pm80xx_chip_sata_req(struct pm8001_hba_info *pm8001_ha,
}
}
}
trace_pm80xx_request_issue(pm8001_ha->id,
ccb->device ? ccb->device->attached_phy : PM8001_MAX_PHYS,
ccb->ccb_tag, opc,
qc ? qc->tf.command : 0, // ata opcode
ccb->device ? atomic_read(&ccb->device->running_req) : 0);
ret = pm8001_mpi_build_cmd(pm8001_ha, circularQ, opc,
&sata_cmd, sizeof(sata_cmd), q_index);
return ret;

10
drivers/scsi/pm8001/pm80xx_tracepoints.c Normal file
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@ -0,0 +1,10 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Trace events in pm8001 driver.
*
* Copyright 2020 Google LLC
* Author: Akshat Jain <akshatzen@google.com>
*/
#define CREATE_TRACE_POINTS
#include "pm80xx_tracepoints.h"

85
drivers/scsi/pm8001/pm80xx_tracepoints.h Normal file
View File

@ -0,0 +1,85 @@
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Trace events in pm8001 driver.
*
* Copyright 2020 Google LLC
* Author: Akshat Jain <akshatzen@google.com>
*/
#undef TRACE_SYSTEM
#define TRACE_SYSTEM pm80xx
#if !defined(_TRACE_PM80XX_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_PM80XX_H
#include <linux/tracepoint.h>
#include "pm8001_sas.h"
TRACE_EVENT(pm80xx_request_issue,
TP_PROTO(u32 id, u32 phy_id, u32 htag, u32 ctlr_opcode,
u16 ata_opcode, int running_req),
TP_ARGS(id, phy_id, htag, ctlr_opcode, ata_opcode, running_req),
TP_STRUCT__entry(
__field(u32, id)
__field(u32, phy_id)
__field(u32, htag)
__field(u32, ctlr_opcode)
__field(u16, ata_opcode)
__field(int, running_req)
),
TP_fast_assign(
__entry->id = id;
__entry->phy_id = phy_id;
__entry->htag = htag;
__entry->ctlr_opcode = ctlr_opcode;
__entry->ata_opcode = ata_opcode;
__entry->running_req = running_req;
),
TP_printk("ctlr_id = %u phy_id = %u htag = %#x, ctlr_opcode = %#x ata_opcode = %#x running_req = %d",
__entry->id, __entry->phy_id, __entry->htag,
__entry->ctlr_opcode, __entry->ata_opcode,
__entry->running_req)
);
TRACE_EVENT(pm80xx_request_complete,
TP_PROTO(u32 id, u32 phy_id, u32 htag, u32 ctlr_opcode,
u16 ata_opcode, int running_req),
TP_ARGS(id, phy_id, htag, ctlr_opcode, ata_opcode, running_req),
TP_STRUCT__entry(
__field(u32, id)
__field(u32, phy_id)
__field(u32, htag)
__field(u32, ctlr_opcode)
__field(u16, ata_opcode)
__field(int, running_req)
),
TP_fast_assign(
__entry->id = id;
__entry->phy_id = phy_id;
__entry->htag = htag;
__entry->ctlr_opcode = ctlr_opcode;
__entry->ata_opcode = ata_opcode;
__entry->running_req = running_req;
),
TP_printk("ctlr_id = %u phy_id = %u htag = %#x, ctlr_opcode = %#x ata_opcode = %#x running_req = %d",
__entry->id, __entry->phy_id, __entry->htag,
__entry->ctlr_opcode, __entry->ata_opcode,
__entry->running_req)
);
#endif /* _TRACE_PM80XX_H_ */
#undef TRACE_INCLUDE_PATH
#undef TRACE_INCLUDE_FILE
#define TRACE_INCLUDE_PATH .
#define TRACE_INCLUDE_FILE pm80xx_tracepoints
#include <trace/define_trace.h>