| commit | ffcbbe722fcb3c162318cba1b94a115498e25acd | |
| author | Peter Xu <peterx@redhat.com> | |
| Fri, 27 Apr 2018 09:07:24 +0000 (27 17:07 +0800) | ||
| committer | Michael S. Tsirkin <mst@redhat.com> | |
| Wed, 23 May 2018 00:14:41 +0000 (23 03:14 +0300) | ||
| tree | 39d0dd6539a56592896ceebd38741e26c9721dfc | treesnapshot (tar.gz zip) |
| parent | b7b126442977dcfa5641e38b084bd13a0b366cff | commitdiff |
vhost: add trace for IOTLB miss
Add some trace points for IOTLB translation for vhost. After vhost-user
is setup, the only IO path that QEMU will participate should be the
IOMMU translation, so it'll be good we can track this with explicit
timestamps when needed to see how long time we take to do the
translation, and whether there's anything stuck inside. It might be
useful for triaging vhost-user problems.
Signed-off-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Add some trace points for IOTLB translation for vhost. After vhost-user
is setup, the only IO path that QEMU will participate should be the
IOMMU translation, so it'll be good we can track this with explicit
timestamps when needed to see how long time we take to do the
translation, and whether there's anything stuck inside. It might be
useful for triaging vhost-user problems.
Signed-off-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
| hw/virtio/trace-events | diffblobblamehistory | |
| hw/virtio/vhost.c | diffblobblamehistory |