[PATCH v4 07/11] vfio/ccw: Update trace data for not operational event

Eric Farman
2022-07-07T13:58:40Z

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