From: Hannes Reinecke <hare@suse.de>
To: Jens Axboe <axboe@kernel.dk>
Cc: Tejun Heo <tj@kernel.org>,
Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>,
linux-ide@vger.kernel.org, Hannes Reinecke <hare@suse.de>
Subject: [PATCH 15/40] libata: add reset tracepoints
Date: Tue, 3 Mar 2020 10:37:48 +0100 [thread overview]
Message-ID: <20200303093813.18523-16-hare@suse.de> (raw)
In-Reply-To: <20200303093813.18523-1-hare@suse.de>
To follow the flow of control we should be using tracepoints, as
they will tie in with the actual I/O flow and deliver a better
overview about what it happening.
This patch adds tracepoints for hard reset, soft reset, and postreset
and adds them in the libata-eh control flow.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
---
drivers/ata/libata-eh.c | 21 ++++++++--
include/trace/events/libata.h | 96 +++++++++++++++++++++++++++++++++++++++++++
2 files changed, 114 insertions(+), 3 deletions(-)
diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c
index 3bfd9da58473..ef3576eb5874 100644
--- a/drivers/ata/libata-eh.c
+++ b/drivers/ata/libata-eh.c
@@ -2787,12 +2787,19 @@ int ata_eh_reset(struct ata_link *link, int classify,
/* mark that this EH session started with reset */
ehc->last_reset = jiffies;
- if (reset == hardreset)
+ if (reset == hardreset) {
ehc->i.flags |= ATA_EHI_DID_HARDRESET;
- else
+ trace_ata_link_hardreset_begin(link, classes, deadline);
+ } else {
ehc->i.flags |= ATA_EHI_DID_SOFTRESET;
+ trace_ata_link_softreset_begin(link, classes, deadline);
+ }
rc = ata_do_reset(link, reset, classes, deadline, true);
+ if (reset == hardreset)
+ trace_ata_link_hardreset_end(link, classes, rc);
+ else
+ trace_ata_link_softreset_end(link, classes, rc);
if (rc && rc != -EAGAIN) {
failed_link = link;
goto fail;
@@ -2806,8 +2813,11 @@ int ata_eh_reset(struct ata_link *link, int classify,
ata_link_info(slave, "hard resetting link\n");
ata_eh_about_to_do(slave, NULL, ATA_EH_RESET);
+ trace_ata_slave_hardreset_begin(slave, classes,
+ deadline);
tmp = ata_do_reset(slave, reset, classes, deadline,
false);
+ trace_ata_slave_hardreset_end(slave, classes, tmp);
switch (tmp) {
case -EAGAIN:
rc = -EAGAIN;
@@ -2834,7 +2844,9 @@ int ata_eh_reset(struct ata_link *link, int classify,
}
ata_eh_about_to_do(link, NULL, ATA_EH_RESET);
+ trace_ata_link_softreset_begin(link, classes, deadline);
rc = ata_do_reset(link, reset, classes, deadline, true);
+ trace_ata_link_softreset_end(link, classes, rc);
if (rc) {
failed_link = link;
goto fail;
@@ -2888,8 +2900,11 @@ int ata_eh_reset(struct ata_link *link, int classify,
*/
if (postreset) {
postreset(link, classes);
- if (slave)
+ trace_ata_link_postreset(link, classes, rc);
+ if (slave) {
postreset(slave, classes);
+ trace_ata_slave_postreset(slave, classes, rc);
+ }
}
/*
diff --git a/include/trace/events/libata.h b/include/trace/events/libata.h
index ab69434e2329..ec2a350d1aca 100644
--- a/include/trace/events/libata.h
+++ b/include/trace/events/libata.h
@@ -132,6 +132,22 @@
ata_protocol_name(ATAPI_PROT_PIO), \
ata_protocol_name(ATAPI_PROT_DMA))
+#define ata_class_name(class) { class, #class }
+#define show_class_name(val) \
+ __print_symbolic(val, \
+ ata_class_name(ATA_DEV_UNKNOWN), \
+ ata_class_name(ATA_DEV_ATA), \
+ ata_class_name(ATA_DEV_ATA_UNSUP), \
+ ata_class_name(ATA_DEV_ATAPI), \
+ ata_class_name(ATA_DEV_ATAPI_UNSUP), \
+ ata_class_name(ATA_DEV_PMP), \
+ ata_class_name(ATA_DEV_PMP_UNSUP), \
+ ata_class_name(ATA_DEV_SEMB), \
+ ata_class_name(ATA_DEV_SEMB_UNSUP), \
+ ata_class_name(ATA_DEV_ZAC), \
+ ata_class_name(ATA_DEV_ZAC_UNSUP), \
+ ata_class_name(ATA_DEV_NONE))
+
const char *libata_trace_parse_status(struct trace_seq*, unsigned char);
#define __parse_status(s) libata_trace_parse_status(p, s)
@@ -329,6 +345,86 @@ TRACE_EVENT(ata_eh_link_autopsy_qc,
__parse_eh_err_mask(__entry->eh_err_mask))
);
+DECLARE_EVENT_CLASS(ata_link_reset_begin_template,
+
+ TP_PROTO(struct ata_link *link, unsigned int *class, unsigned long deadline),
+
+ TP_ARGS(link, class, deadline),
+
+ TP_STRUCT__entry(
+ __field( unsigned int, ata_port )
+ __array( unsigned int, class, 2 )
+ __field( unsigned long, deadline )
+ ),
+
+ TP_fast_assign(
+ __entry->ata_port = link->ap->print_id;
+ memcpy(__entry->class, class, 2);
+ __entry->deadline = deadline;
+ ),
+
+ TP_printk("ata_port=%u deadline=%lu classes=[%s,%s]",
+ __entry->ata_port, __entry->deadline,
+ show_class_name(__entry->class[0]),
+ show_class_name(__entry->class[1]))
+);
+
+DEFINE_EVENT(ata_link_reset_begin_template, ata_link_hardreset_begin,
+ TP_PROTO(struct ata_link *link, unsigned int *class, unsigned long deadline),
+ TP_ARGS(link, class, deadline));
+
+DEFINE_EVENT(ata_link_reset_begin_template, ata_slave_hardreset_begin,
+ TP_PROTO(struct ata_link *link, unsigned int *class, unsigned long deadline),
+ TP_ARGS(link, class, deadline));
+
+DEFINE_EVENT(ata_link_reset_begin_template, ata_link_softreset_begin,
+ TP_PROTO(struct ata_link *link, unsigned int *class, unsigned long deadline),
+ TP_ARGS(link, class, deadline));
+
+DECLARE_EVENT_CLASS(ata_link_reset_end_template,
+
+ TP_PROTO(struct ata_link *link, unsigned int *class, int rc),
+
+ TP_ARGS(link, class, rc),
+
+ TP_STRUCT__entry(
+ __field( unsigned int, ata_port )
+ __array( unsigned int, class, 2 )
+ __field( int, rc )
+ ),
+
+ TP_fast_assign(
+ __entry->ata_port = link->ap->print_id;
+ memcpy(__entry->class, class, 2);
+ __entry->rc = rc;
+ ),
+
+ TP_printk("ata_port=%u rc=%d class=[%s,%s]",
+ __entry->ata_port, __entry->rc,
+ show_class_name(__entry->class[0]),
+ show_class_name(__entry->class[1]))
+);
+
+DEFINE_EVENT(ata_link_reset_end_template, ata_link_hardreset_end,
+ TP_PROTO(struct ata_link *link, unsigned int *class, int rc),
+ TP_ARGS(link, class, rc));
+
+DEFINE_EVENT(ata_link_reset_end_template, ata_slave_hardreset_end,
+ TP_PROTO(struct ata_link *link, unsigned int *class, int rc),
+ TP_ARGS(link, class, rc));
+
+DEFINE_EVENT(ata_link_reset_end_template, ata_link_softreset_end,
+ TP_PROTO(struct ata_link *link, unsigned int *class, int rc),
+ TP_ARGS(link, class, rc));
+
+DEFINE_EVENT(ata_link_reset_end_template, ata_link_postreset,
+ TP_PROTO(struct ata_link *link, unsigned int *class, int rc),
+ TP_ARGS(link, class, rc));
+
+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));
+
#endif /* _TRACE_LIBATA_H */
/* This part must be outside protection */
--
2.16.4
next prev parent reply other threads:[~2020-03-03 9:39 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-03 9:37 [PATCHv3 00/40] ata: kill ATA_DEBUG Hannes Reinecke
2020-03-03 9:37 ` [PATCH 01/40] libata: drop BPRINTK() Hannes Reinecke
2020-03-03 9:37 ` [PATCH 02/40] libata.h: whitespace and indentation fixes Hannes Reinecke
2020-03-03 9:37 ` [PATCH 03/40] libata-transport: Whitespace cleanup Hannes Reinecke
2020-03-03 9:37 ` [PATCH 04/40] libata: move ata_{port,link,dev}_dbg to standard dev_XXX() macros Hannes Reinecke
2020-03-24 13:26 ` Geert Uytterhoeven
2020-03-25 14:56 ` Bartlomiej Zolnierkiewicz
2020-03-25 15:34 ` Geert Uytterhoeven
2020-03-25 15:45 ` Bartlomiej Zolnierkiewicz
2020-03-25 16:54 ` Hannes Reinecke
2020-03-03 9:37 ` [PATCH 05/40] libata: move __func__ into ata_{port,link,dev}_dbg() helper Hannes Reinecke
2020-03-03 9:37 ` [PATCH 06/40] libata: remove pointless debugging messages Hannes Reinecke
2020-03-03 9:37 ` [PATCH 07/40] ata_piix: remove " Hannes Reinecke
2020-03-03 9:37 ` [PATCH 08/40] libata-core: remove pointless " Hannes Reinecke
2020-03-03 9:37 ` [PATCH 09/40] libata: Add ata_port_classify() helper Hannes Reinecke
2020-03-03 9:37 ` [PATCH 10/40] libata: move ata_dump_id() to dynamic debugging Hannes Reinecke
2020-03-03 9:37 ` [PATCH 11/40] libata: sanitize ATA_HORKAGE_DUMP_ID Hannes Reinecke
2020-03-03 9:37 ` [PATCH 12/40] sata_mv: replace DPRINTK with 'pci_dump' module parameter Hannes Reinecke
2020-03-03 9:37 ` [PATCH 13/40] sata_mv: kill 'port' argument in mv_dump_all_regs() Hannes Reinecke
2020-03-03 9:37 ` [PATCH 14/40] sata_sx4: move DPRINTK to VPRINTK Hannes Reinecke
2020-03-03 9:37 ` Hannes Reinecke [this message]
2020-03-03 9:37 ` [PATCH 16/40] libata: drop DPRINTK() calls in reset Hannes Reinecke
2020-03-03 9:37 ` [PATCH 17/40] libata: tracepoints for bus-master DMA Hannes Reinecke
2020-03-03 9:37 ` [PATCH 18/40] libata: drop debugging statements " Hannes Reinecke
2020-03-03 9:37 ` [PATCH 19/40] pata_octeon_cf: add bmdma tracepoints and drop DPRINTK() calls Hannes Reinecke
2020-03-03 9:37 ` [PATCH 20/40] pata_arasan_cf: use generic tracepoints Hannes Reinecke
2020-03-03 9:37 ` [PATCH 21/40] sata_dwc_460ex: " Hannes Reinecke
2020-03-03 9:37 ` [PATCH 22/40] sata_nv: " Hannes Reinecke
2020-03-03 9:37 ` [PATCH 23/40] libata-sff: tracepoints for HSM state machine Hannes Reinecke
2020-03-03 9:37 ` [PATCH 24/40] libata-sff: add tracepoints for ata_sff_flush_pio_task() Hannes Reinecke
2020-03-03 9:37 ` [PATCH 25/40] libata-scsi: drop DPRINTK calls for cdb translation Hannes Reinecke
2020-03-03 9:37 ` [PATCH 26/40] libata: add tracepoints for ATA error handling Hannes Reinecke
2020-03-03 9:38 ` [PATCH 27/40] libata: drop DPRINTK() calls during " Hannes Reinecke
2020-03-03 9:38 ` [PATCH 28/40] libata-eh: remove DPRINTK() calls for request sense Hannes Reinecke
2020-03-03 9:38 ` [PATCH 29/40] pata_octeon_cf: move DPRINTK to VPRINTK Hannes Reinecke
2020-03-03 9:38 ` [PATCH 30/40] pdc_adma: " Hannes Reinecke
2020-03-03 9:38 ` [PATCH 31/40] sata_rcar: " Hannes Reinecke
2020-03-03 9:38 ` [PATCH 32/40] sata_qstor: " Hannes Reinecke
2020-03-03 9:38 ` [PATCH 33/40] pata_pdc2027x: Replace PDPRINTK() with standard ata logging Hannes Reinecke
2020-03-03 9:38 ` [PATCH 34/40] sata_nv: move DPRINTK to ata debugging Hannes Reinecke
2020-03-03 9:38 ` [PATCH 35/40] sata_fsl: " Hannes Reinecke
2020-03-13 14:43 ` Guenter Roeck
2020-03-03 9:38 ` [PATCH 36/40] libata-core: " Hannes Reinecke
2020-03-03 9:38 ` [PATCH 37/40] libata: remove DPRINTK() macro Hannes Reinecke
2020-03-03 9:38 ` [PATCH 38/40] libata: kill ATA_MSG_INFO Hannes Reinecke
2020-03-03 9:38 ` [PATCH 39/40] libata: kill ATA_MSG_CTL Hannes Reinecke
2020-03-03 9:38 ` [PATCH 40/40] libata: remove references to ATA_DEBUG Hannes Reinecke
2020-03-12 14:04 ` [PATCHv3 00/40] ata: kill ATA_DEBUG Jens Axboe
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