ata: libata: tracepoints for bus-master DMA

Add tracepoints for bus-master DMA and taskfile related functions.
That allows us to drop the relevant DPRINTK() calls.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>

1 files changed, 7 insertions, 11 deletions

diff --git a/drivers/ata/pata_octeon_cf.c b/drivers/ata/pata_octeon_cf.c
index cdc95eb2b2cb..1fe756af3268 100644
--- a/drivers/ata/pata_octeon_cf.c
+++ b/drivers/ata/pata_octeon_cf.c
@@ -19,7 +19,7 @@
 #include <linux/of_platform.h>
 #include <linux/platform_device.h>
 #include <scsi/scsi_host.h>
-
+#include <trace/events/libata.h>
 #include <asm/byteorder.h>
 #include <asm/octeon/octeon.h>
 
@@ -514,20 +514,14 @@ static void octeon_cf_exec_command16(struct ata_port *ap,
 {
 	/* The base of the registers is at ioaddr.data_addr. */
 	void __iomem *base = ap->ioaddr.data_addr;
-	u16 blob;
+	u16 blob = 0;
 
-	if (tf->flags & ATA_TFLAG_DEVICE) {
-		VPRINTK("device 0x%X\n", tf->device);
+	if (tf->flags & ATA_TFLAG_DEVICE)
 		blob = tf->device;
-	} else {
-		blob = 0;
-	}
 
-	DPRINTK("ata%u: cmd 0x%X\n", ap->print_id, tf->command);
 	blob |= (tf->command << 8);
 	__raw_writew(blob, base + 6);
 
-
 	ata_wait_idle(ap);
 }
 
@@ -541,12 +535,10 @@ static void octeon_cf_dma_setup(struct ata_queued_cmd *qc)
 	struct octeon_cf_port *cf_port;
 
 	cf_port = ap->private_data;
-	DPRINTK("ENTER\n");
 	/* issue r/w command */
 	qc->cursg = qc->sg;
 	cf_port->dma_finished = 0;
 	ap->ops->sff_exec_command(ap, &qc->tf);
-	DPRINTK("EXIT\n");
 }
 
 /**
@@ -699,6 +691,7 @@ static irqreturn_t octeon_cf_interrupt(int irq, void *dev_instance)
 			if (!sg_is_last(qc->cursg)) {
 				qc->cursg = sg_next(qc->cursg);
 				handled = 1;
+				trace_ata_bmdma_start(ap, &qc->tf, qc->tag);
 				octeon_cf_dma_start(qc);
 				continue;
 			} else {
@@ -798,8 +791,11 @@ static unsigned int octeon_cf_qc_issue(struct ata_queued_cmd *qc)
 	case ATA_PROT_DMA:
 		WARN_ON(qc->tf.flags & ATA_TFLAG_POLLING);
 
+		trace_ata_tf_load(ap, &qc->tf);
 		ap->ops->sff_tf_load(ap, &qc->tf);  /* load tf registers */
+		trace_ata_bmdma_setup(ap, &qc->tf, qc->tag);
 		octeon_cf_dma_setup(qc);	    /* set up dma */
+		trace_ata_bmdma_start(ap, &qc->tf, qc->tag);
 		octeon_cf_dma_start(qc);	    /* initiate dma */
 		ap->hsm_task_state = HSM_ST_LAST;
 		break;