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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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4
drivers/ata/libata-eh.c
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@@ -46,6 +46,7 @@
#include <linux/libata.h>
#include <trace/events/libata.h>
#include "libata.h"
enum {
@@ -2291,6 +2292,7 @@ static void ata_eh_link_autopsy(struct ata_link *link)
all_err_mask |= qc->err_mask;
if (qc->flags & ATA_QCFLAG_IO)
eflags |= ATA_EFLAG_IS_IO;
trace_ata_eh_link_autopsy_qc(qc);
}
/* enforce default EH actions */
@@ -2325,7 +2327,7 @@ static void ata_eh_link_autopsy(struct ata_link *link)
eflags |= ATA_EFLAG_DUBIOUS_XFER;
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");
}