[SCSI] add scsi trace core functions and put trace points
Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Tomohiro Kusumi <kusumi.tomohiro@jp.fujitsu.com>
Signed-off-by: Kei Tokunaga <tokunaga.keiich@jp.fujitsu.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
diff --git a/drivers/scsi/scsi.c b/drivers/scsi/scsi.c
index 1c08f61..ad0ed21 100644
--- a/drivers/scsi/scsi.c
+++ b/drivers/scsi/scsi.c
@@ -67,6 +67,9 @@
#include "scsi_priv.h"
#include "scsi_logging.h"
+#define CREATE_TRACE_POINTS
+#include <trace/events/scsi.h>
+
static void scsi_done(struct scsi_cmnd *cmd);
/*
@@ -747,10 +750,12 @@
cmd->result = (DID_NO_CONNECT << 16);
scsi_done(cmd);
} else {
+ trace_scsi_dispatch_cmd_start(cmd);
rtn = host->hostt->queuecommand(cmd, scsi_done);
}
spin_unlock_irqrestore(host->host_lock, flags);
if (rtn) {
+ trace_scsi_dispatch_cmd_error(cmd, rtn);
if (rtn != SCSI_MLQUEUE_DEVICE_BUSY &&
rtn != SCSI_MLQUEUE_TARGET_BUSY)
rtn = SCSI_MLQUEUE_HOST_BUSY;
@@ -781,6 +786,7 @@
*/
static void scsi_done(struct scsi_cmnd *cmd)
{
+ trace_scsi_dispatch_cmd_done(cmd);
blk_complete_request(cmd->request);
}