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authorKei Tokunaga <tokunaga.keiich@jp.fujitsu.com>2010-04-01 15:41:40 +0400
committerJames Bottomley <James.Bottomley@suse.de>2010-04-30 21:51:10 +0400
commitbf81623542332bc2cedf3db49cbb2edb724780d2 (patch)
tree47e4b784fefd533251b58ae1c2d8c8d280242bcf /drivers/scsi/scsi.c
parent5a2e3995951176e1aaa63d17ae2e1d26ac99003d (diff)
downloadlinux-bf81623542332bc2cedf3db49cbb2edb724780d2.tar.xz
[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>
Diffstat (limited to 'drivers/scsi/scsi.c')
-rw-r--r--drivers/scsi/scsi.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/scsi/scsi.c b/drivers/scsi/scsi.c
index 1c08f6164658..ad0ed212db4a 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 @@ int scsi_dispatch_cmd(struct scsi_cmnd *cmd)
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 @@ int scsi_dispatch_cmd(struct scsi_cmnd *cmd)
*/
static void scsi_done(struct scsi_cmnd *cmd)
{
+ trace_scsi_dispatch_cmd_done(cmd);
blk_complete_request(cmd->request);
}