Add tracepoints for ATA error handling.
Signed-off-by: Hannes Reinecke <hare@xxxxxxx>
---
drivers/ata/libata-eh.c | 26 ++++-----------
drivers/ata/libata-pmp.c | 8 -----
drivers/ata/libata-sata.c | 3 --
include/trace/events/libata.h | 60 +++++++++++++++++++++++++++++++++++
4 files changed, 67 insertions(+), 30 deletions(-)
diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c
index 043a1c846f2c..69f51616d8bd 100644
--- a/drivers/ata/libata-eh.c
+++ b/drivers/ata/libata-eh.c
@@ -533,8 +533,6 @@ void ata_scsi_error(struct Scsi_Host *host)
unsigned long flags;
LIST_HEAD(eh_work_q);
- DPRINTK("ENTER\n");
-
spin_lock_irqsave(host->host_lock, flags);
list_splice_init(&host->eh_cmd_q, &eh_work_q);
spin_unlock_irqrestore(host->host_lock, flags);
@@ -548,7 +546,6 @@ void ata_scsi_error(struct Scsi_Host *host)
/* finish or retry handled scmd's and clean up */
WARN_ON(!list_empty(&eh_work_q));
- DPRINTK("EXIT\n");
}
/**
@@ -940,7 +937,7 @@ void ata_std_sched_eh(struct ata_port *ap)
ata_eh_set_pending(ap, 1);
scsi_schedule_eh(ap->scsi_host);
- DPRINTK("port EH scheduled\n");
+ trace_ata_std_sched_eh(ap);
}
EXPORT_SYMBOL_GPL(ata_std_sched_eh);
@@ -1070,7 +1067,7 @@ static void __ata_port_freeze(struct ata_port *ap)
ap->pflags |= ATA_PFLAG_FROZEN;
- DPRINTK("ata%u port frozen\n", ap->print_id);
+ trace_ata_port_freeze(ap);
}
/**
@@ -1147,7 +1144,7 @@ void ata_eh_thaw_port(struct ata_port *ap)
spin_unlock_irqrestore(ap->lock, flags);
- DPRINTK("ata%u port thawed\n", ap->print_id);
+ trace_ata_port_thaw(ap);
}
static void ata_eh_scsidone(struct scsi_cmnd *scmd)
@@ -1287,6 +1284,8 @@ void ata_eh_about_to_do(struct ata_link *link, struct ata_device *dev,
struct ata_eh_context *ehc = &link->eh_context;
unsigned long flags;
+ trace_ata_eh_about_to_do(link, dev ? dev->devno : 0, action);
+
spin_lock_irqsave(ap->lock, flags);
ata_eh_clear_action(link, dev, ehi, action);
@@ -1317,6 +1316,8 @@ void ata_eh_done(struct ata_link *link, struct ata_device *dev,
{
struct ata_eh_context *ehc = &link->eh_context;
+ trace_ata_eh_done(link, dev ? dev->devno : 0, action);
+
ata_eh_clear_action(link, dev, &ehc->i, action);
}
@@ -1421,8 +1422,6 @@ static void ata_eh_request_sense(struct ata_queued_cmd *qc,
return;
}
- DPRINTK("ATA request sense\n");
-
ata_tf_init(dev, &tf);
tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
tf.flags |= ATA_TFLAG_LBA | ATA_TFLAG_LBA48;
@@ -1463,8 +1462,6 @@ unsigned int atapi_eh_request_sense(struct ata_device *dev,
struct ata_port *ap = dev->link->ap;
struct ata_taskfile tf;
- DPRINTK("ATAPI request sense\n");
-
memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE);
/* initialize sense_buf with the error register,
@@ -1928,8 +1925,6 @@ static void ata_eh_link_autopsy(struct ata_link *link)
u32 serror;
int rc;
- DPRINTK("ENTER\n");
-
if (ehc->i.flags & ATA_EHI_NO_AUTOPSY)
return;
@@ -2036,7 +2031,6 @@ static void ata_eh_link_autopsy(struct ata_link *link)
ehc->i.action |= ata_eh_speed_down(dev, eflags, all_err_mask);
trace_ata_eh_link_autopsy(dev, ehc->i.action, all_err_mask);
}
- DPRINTK("EXIT\n");
}
/**
@@ -2936,8 +2930,6 @@ static int ata_eh_revalidate_and_attach(struct ata_link *link,
unsigned long flags;
int rc = 0;
- DPRINTK("ENTER\n");
-
/* For PATA drive side cable detection to work, IDENTIFY must
* be done backwards such that PDIAG- is released by the slave
* device before the master device is identified.
@@ -3051,7 +3043,6 @@ static int ata_eh_revalidate_and_attach(struct ata_link *link,
err:
*r_failed_dev = dev;
- DPRINTK("EXIT rc=%d\n", rc);
return rc;
}
@@ -3566,8 +3557,6 @@ int ata_eh_recover(struct ata_port *ap, ata_prereset_fn_t prereset,
int rc, nr_fails;
unsigned long flags, deadline;
- DPRINTK("ENTER\n");
-
/* prep for recovery */
ata_for_each_link(link, ap, EDGE) {
struct ata_eh_context *ehc = &link->eh_context;
@@ -3775,7 +3764,6 @@ int ata_eh_recover(struct ata_port *ap, ata_prereset_fn_t prereset,
if (rc && r_failed_link)
*r_failed_link = link;
- DPRINTK("EXIT, rc=%d\n", rc);
return rc;
}
diff --git a/drivers/ata/libata-pmp.c b/drivers/ata/libata-pmp.c
index ba7be3f38617..e2e9cbd405fa 100644
--- a/drivers/ata/libata-pmp.c
+++ b/drivers/ata/libata-pmp.c
@@ -652,8 +652,6 @@ static int sata_pmp_revalidate(struct ata_device *dev, unsigned int new_class)
u32 *gscr = (void *)ap->sector_buf;
int rc;
- DPRINTK("ENTER\n");
-
ata_eh_about_to_do(link, NULL, ATA_EH_REVALIDATE);
if (!ata_dev_enabled(dev)) {
@@ -686,12 +684,10 @@ static int sata_pmp_revalidate(struct ata_device *dev, unsigned int new_class)
ata_eh_done(link, NULL, ATA_EH_REVALIDATE);
- DPRINTK("EXIT, rc=0\n");
return 0;
fail:
ata_dev_err(dev, "PMP revalidation failed (errno=%d)\n", rc);
- DPRINTK("EXIT, rc=%d\n", rc);
return rc;
}
@@ -759,8 +755,6 @@ static int sata_pmp_eh_recover_pmp(struct ata_port *ap,
int detach = 0, rc = 0;
int reval_failed = 0;
- DPRINTK("ENTER\n");
-
if (dev->flags & ATA_DFLAG_DETACH) {
detach = 1;
rc = -ENODEV;
@@ -828,7 +822,6 @@ static int sata_pmp_eh_recover_pmp(struct ata_port *ap,
/* okay, PMP resurrected */
ehc->i.flags = 0;
- DPRINTK("EXIT, rc=0\n");
return 0;
fail:
@@ -838,7 +831,6 @@ static int sata_pmp_eh_recover_pmp(struct ata_port *ap,
else
ata_dev_disable(dev);
- DPRINTK("EXIT, rc=%d\n", rc);
return rc;
}
diff --git a/drivers/ata/libata-sata.c b/drivers/ata/libata-sata.c
index eddd33a3cb5f..d9b5744a3b06 100644
--- a/drivers/ata/libata-sata.c
+++ b/drivers/ata/libata-sata.c
@@ -533,8 +533,6 @@ int sata_link_hardreset(struct ata_link *link, const unsigned long *timing,
u32 scontrol;
int rc;
- DPRINTK("ENTER\n");
-
if (online)
*online = false;
@@ -610,7 +608,6 @@ int sata_link_hardreset(struct ata_link *link, const unsigned long *timing,
*online = false;
ata_link_err(link, "COMRESET failed (errno=%d)\n", rc);
}
- DPRINTK("EXIT, rc=%d\n", rc);
return rc;
}
EXPORT_SYMBOL_GPL(sata_link_hardreset);
diff --git a/include/trace/events/libata.h b/include/trace/events/libata.h
index fcb8fde39614..d4e631aa976f 100644
--- a/include/trace/events/libata.h
+++ b/include/trace/events/libata.h
@@ -490,6 +490,37 @@ TRACE_EVENT(ata_eh_link_autopsy_qc,
__parse_eh_err_mask(__entry->eh_err_mask))
);
+DECLARE_EVENT_CLASS(ata_eh_action_template,
+
+ TP_PROTO(struct ata_link *link, unsigned int devno, unsigned int eh_action),
+
+ TP_ARGS(link, devno, eh_action),
+
+ TP_STRUCT__entry(
+ __field( unsigned int, ata_port )
+ __field( unsigned int, ata_dev )
+ __field( unsigned int, eh_action )
+ ),
+
+ TP_fast_assign(
+ __entry->ata_port = link->ap->print_id;
+ __entry->ata_dev = link->pmp + devno;
+ __entry->eh_action = eh_action;
+ ),
+
+ TP_printk("ata_port=%u ata_dev=%u eh_action=%s",
+ __entry->ata_port, __entry->ata_dev,
+ __parse_eh_action(__entry->eh_action))
+);
+
+DEFINE_EVENT(ata_eh_action_template, ata_eh_about_to_do,
+ TP_PROTO(struct ata_link *link, unsigned int devno, unsigned int eh_action),
+ TP_ARGS(link, devno, eh_action));
+
+DEFINE_EVENT(ata_eh_action_template, ata_eh_done,
+ TP_PROTO(struct ata_link *link, unsigned int devno, unsigned int eh_action),
+ TP_ARGS(link, devno, eh_action));
+
DECLARE_EVENT_CLASS(ata_link_reset_begin_template,
TP_PROTO(struct ata_link *link, unsigned int *class, unsigned long deadline),
@@ -570,6 +601,35 @@ DEFINE_EVENT(ata_link_reset_end_template, ata_slave_postreset,
TP_PROTO(struct ata_link *link, unsigned int *class, int rc),
TP_ARGS(link, class, rc));
+DECLARE_EVENT_CLASS(ata_port_eh_begin_template,
+
+ TP_PROTO(struct ata_port *ap),
+
+ TP_ARGS(ap),
+
+ TP_STRUCT__entry(
+ __field( unsigned int, ata_port )
+ ),
+
+ TP_fast_assign(
+ __entry->ata_port = ap->print_id;
+ ),
+
+ TP_printk("ata_port=%u", __entry->ata_port)
+);
+
+DEFINE_EVENT(ata_port_eh_begin_template, ata_std_sched_eh,
+ TP_PROTO(struct ata_port *ap),
+ TP_ARGS(ap));
+
+DEFINE_EVENT(ata_port_eh_begin_template, ata_port_freeze,
+ TP_PROTO(struct ata_port *ap),
+ TP_ARGS(ap));
+
+DEFINE_EVENT(ata_port_eh_begin_template, ata_port_thaw,
+ TP_PROTO(struct ata_port *ap),
+ TP_ARGS(ap));
+
DECLARE_EVENT_CLASS(ata_sff_hsm_template,
TP_PROTO(struct ata_queued_cmd *qc, unsigned char status),
--
2.29.2
