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From: Eric Farman <farman@linux.ibm.com>
To: Alex Williamson <alex.williamson@redhat.com>
Cc: Matthew Rosato <mjrosato@linux.ibm.com>,
	Jason Gunthorpe <jgg@nvidia.com>,
	Cornelia Huck <cohuck@redhat.com>,
	Halil Pasic <pasic@linux.ibm.com>,
	kvm@vger.kernel.org, linux-s390@vger.kernel.org,
	Eric Farman <farman@linux.ibm.com>
Subject: [PATCH v4 07/11] vfio/ccw: Update trace data for not operational event
Date: Thu,  7 Jul 2022 15:57:33 +0200	[thread overview]
Message-ID: <20220707135737.720765-8-farman@linux.ibm.com> (raw)
In-Reply-To: <20220707135737.720765-1-farman@linux.ibm.com>

We currently cut a very basic trace whenever the FSM directs
control to the not operational routine.

Convert this to a message, so it's alongside the other configuration
related traces (create, remove, etc.), and record both the event
that brought us here and the current state of the device.
This will provide some better footprints if things go bad.

Suggested-by: Matthew Rosato <mjrosato@linux.ibm.com>
Signed-off-by: Eric Farman <farman@linux.ibm.com>
Reviewed-by: Matthew Rosato <mjrosato@linux.ibm.com>
---
 drivers/s390/cio/vfio_ccw_fsm.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/s390/cio/vfio_ccw_fsm.c b/drivers/s390/cio/vfio_ccw_fsm.c
index bbcc5b486749..88e529a2e184 100644
--- a/drivers/s390/cio/vfio_ccw_fsm.c
+++ b/drivers/s390/cio/vfio_ccw_fsm.c
@@ -160,8 +160,12 @@ static void fsm_notoper(struct vfio_ccw_private *private,
 {
 	struct subchannel *sch = private->sch;
 
-	VFIO_CCW_TRACE_EVENT(2, "notoper");
-	VFIO_CCW_TRACE_EVENT(2, dev_name(&sch->dev));
+	VFIO_CCW_MSG_EVENT(2, "sch %x.%x.%04x: notoper event %x state %x\n",
+			   sch->schid.cssid,
+			   sch->schid.ssid,
+			   sch->schid.sch_no,
+			   event,
+			   private->state);
 
 	/*
 	 * TODO:
-- 
2.34.1


  parent reply	other threads:[~2022-07-07 13:58 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-07-07 13:57 [PATCH v4 00/11] s390/vfio-ccw rework Eric Farman
2022-07-07 13:57 ` [PATCH v4 01/11] vfio/ccw: Remove UUID from s390 debug log Eric Farman
2022-07-07 13:57 ` [PATCH v4 02/11] vfio/ccw: Fix FSM state if mdev probe fails Eric Farman
2022-07-07 13:57 ` [PATCH v4 03/11] vfio/ccw: Do not change FSM state in subchannel event Eric Farman
2022-07-07 13:57 ` [PATCH v4 04/11] vfio/ccw: Remove private->mdev Eric Farman
2022-07-07 13:57 ` [PATCH v4 05/11] vfio/ccw: Pass enum to FSM event jumptable Eric Farman
2022-07-07 13:57 ` [PATCH v4 06/11] vfio/ccw: Flatten MDEV device (un)register Eric Farman
2022-07-07 13:57 ` Eric Farman [this message]
2022-07-07 13:57 ` [PATCH v4 08/11] vfio/ccw: Create an OPEN FSM Event Eric Farman
2022-07-07 13:57 ` [PATCH v4 09/11] vfio/ccw: Create a CLOSE FSM event Eric Farman
2022-07-07 13:57 ` [PATCH v4 10/11] vfio/ccw: Refactor vfio_ccw_mdev_reset Eric Farman
2022-07-07 13:57 ` [PATCH v4 11/11] vfio/ccw: Move FSM open/close to MDEV open/close Eric Farman
2022-07-07 21:32 ` [PATCH v4 00/11] s390/vfio-ccw rework Alex Williamson

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