diff options
| author |   Cornelia Huck <cohuck@redhat.com> | 2019-08-15 13:53:41 +0200 |
|---|---|---|
| committer | Cornelia Huck <cohuck@redhat.com> | 2019-08-23 12:53:32 +0200 |
| commit | 60e05d1cf0875f0cf73472f7dff71d9933c5b697 (patch) | |
| tree | ac40057f062cc9fe775c0268f8e695bffcf46a2e /drivers/s390/cio/vfio_ccw_ops.c | |
| parent | s390/paes: Prepare paes functions for large key blobs (diff) | |
| download | linux-dev-60e05d1cf0875f0cf73472f7dff71d9933c5b697.tar.xz linux-dev-60e05d1cf0875f0cf73472f7dff71d9933c5b697.zip | |
vfio-ccw: add some logging
Usually, the common I/O layer logs various things into the s390
cio debug feature, which has been very helpful in the past when
looking at crash dumps. As vfio-ccw devices unbind from the
standard I/O subchannel driver, we lose some information there.
Let's introduce some vfio-ccw debug features and log some things
there. (Unfortunately we cannot reuse the cio debug feature from
a module.)
Message-Id: <20190816151505.9853-2-cohuck@redhat.com>
Reviewed-by: Eric Farman <farman@linux.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
Diffstat (limited to '')
| -rw-r--r-- | drivers/s390/cio/vfio_ccw_ops.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/s390/cio/vfio_ccw_ops.c b/drivers/s390/cio/vfio_ccw_ops.c index 5eb61116ca6f..f0d71ab77c50 100644 --- a/drivers/s390/cio/vfio_ccw_ops.c +++ b/drivers/s390/cio/vfio_ccw_ops.c @@ -124,6 +124,11 @@ static int vfio_ccw_mdev_create(struct kobject *kobj, struct mdev_device *mdev) private->mdev = mdev; private->state = VFIO_CCW_STATE_IDLE; + VFIO_CCW_MSG_EVENT(2, "mdev %pUl, sch %x.%x.%04x: create\n", + mdev_uuid(mdev), private->sch->schid.cssid, + private->sch->schid.ssid, + private->sch->schid.sch_no); + return 0; } @@ -132,6 +137,11 @@ static int vfio_ccw_mdev_remove(struct mdev_device *mdev) struct vfio_ccw_private *private = dev_get_drvdata(mdev_parent_dev(mdev)); + VFIO_CCW_MSG_EVENT(2, "mdev %pUl, sch %x.%x.%04x: remove\n", + mdev_uuid(mdev), private->sch->schid.cssid, + private->sch->schid.ssid, + private->sch->schid.sch_no); + if ((private->state != VFIO_CCW_STATE_NOT_OPER) && (private->state != VFIO_CCW_STATE_STANDBY)) { if (!vfio_ccw_sch_quiesce(private->sch)) |