libata: Add tracepoints
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>
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index ff57367..be1722a 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -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 @@
*/
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 @@
*/
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 @@
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 @@
}
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;