iommu: use sva invalidate and device fault trace event

hulk inclusion
category: feature
bugzilla: 14369
CVE: NA
-------------------

For performance and debugging purposes, these trace events help
analyzing device faults and passdown invalidations that interact
with IOMMU subsystem.
E.g.
IOMMU:0000:00:0a.0 type=2 reason=0 addr=0x00000000007ff000 pasid=1
group=1 last=0 prot=1
Signed-off-by: NJacob Pan <jacob.jun.pan@linux.intel.com>
Signed-off-by: NFang Lijun <fanglijun3@huawei.com>
Reviewed-by: NHanjun Guo <guohanjun@huawei.com>
Reviewed-by: NZhen Lei <thunder.leizhen@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>

drivers/iommu/iommu.c

@@ -1049,6 +1049,7 @@ int iommu_report_device_fault(struct device *dev, struct iommu_fault_event *evt)
 		mutex_unlock(&fparam->lock);
 	}
 	ret = fparam->handler(evt, fparam->data);
+	trace_dev_fault(dev, evt);
 done_unlock:
 	mutex_unlock(&dev->iommu_param->lock);
 	return ret;
@@ -1624,6 +1625,7 @@ int iommu_sva_invalidate(struct iommu_domain *domain,
 		return -ENODEV;
 
 	ret = domain->ops->sva_invalidate(domain, dev, inv_info);
+	trace_sva_invalidate(dev, inv_info);
 
 	return ret;
 }
@@ -1661,6 +1663,7 @@ int iommu_page_response(struct device *dev,
 		if (evt->pasid == msg->pasid &&
 		    msg->page_req_group_id == evt->page_req_group_id) {
 			msg->private_data = evt->iommu_private;
+			trace_dev_page_response(dev, msg);
 			ret = domain->ops->page_response(dev, msg);
 			list_del(&evt->list);
 			kfree(evt);