vfio-ccw: Trace the FSM jumptable

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It would be nice if we could track the sequence of events within
vfio-ccw, based on the state of the device/FSM and our calling
sequence within it.  So let's add a simple trace here so we can
watch the states change as things go, and allow it to be folded
into the rest of the other cio traces.

Signed-off-by: Eric Farman <farman@linux.ibm.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Message-Id: <20191016142040.14132-3-farman@linux.ibm.com>
Acked-by: Halil Pasic <pasic@linux.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>

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Eric Farman 2019-10-16 16:20:38 +02:00 • committed by Cornelia Huck

parent 7af52cca6f

commit 970ebeb848

3 changed files with 28 additions and 0 deletions

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1

drivers/s390/cio/vfio_ccw_private.h

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1

drivers/s390/cio/vfio_ccw_trace.c

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26

drivers/s390/cio/vfio_ccw_trace.h

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