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libata: Add tracepoints

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Add some tracepoints for ata_qc_issue, ata_qc_complete, and
ata_eh_link_autopsy.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Hannes Reinecke 2015-03-27 16:46:38 +01:00 • committed by Tejun Heo
parent a1524f226a
commit 255c03d15a
5 changed files with 488 additions and 3 deletions
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8
drivers/ata/libata-core.c
View file

@ -70,6 +70,9 @@
#include <linux/pm_runtime.h>
#include <linux/platform_device.h>
#define CREATE_TRACE_POINTS
#include <trace/events/libata.h>
#include "libata.h"
#include "libata-transport.h"
@ -4904,6 +4907,7 @@ void ata_qc_complete(struct ata_queued_cmd *qc)
*/
if (unlikely(ata_tag_internal(qc->tag))) {
fill_result_tf(qc);
trace_ata_qc_complete_internal(qc);
__ata_qc_complete(qc);
return;
}
@ -4914,6 +4918,7 @@ void ata_qc_complete(struct ata_queued_cmd *qc)
*/
if (unlikely(qc->flags & ATA_QCFLAG_FAILED)) {
fill_result_tf(qc);
trace_ata_qc_complete_failed(qc);
ata_qc_schedule_eh(qc);
return;
}
@ -4924,6 +4929,7 @@ void ata_qc_complete(struct ata_queued_cmd *qc)
if (qc->flags & ATA_QCFLAG_RESULT_TF)
fill_result_tf(qc);
trace_ata_qc_complete_done(qc);
/* Some commands need post-processing after successful
* completion.
*/
@ -5071,7 +5077,7 @@ void ata_qc_issue(struct ata_queued_cmd *qc)
}
ap->ops->qc_prep(qc);
trace_ata_qc_issue(qc);
qc->err_mask |= ap->ops->qc_issue(qc);
if (unlikely(qc->err_mask))
goto err;