From: Jean-Philippe Brucker <jean-philippe.bruc...@arm.com> For performance and debugging purposes, these trace events help analyzing device faults 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: Jacob Pan <jacob.jun....@linux.intel.com> [JPB: removed invalidate event, that will be added later] Signed-off-by: Jean-Philippe Brucker <jean-philippe.bruc...@arm.com> Signed-off-by: Jacob Pan <jacob.jun....@linux.intel.com> --- drivers/iommu/iommu.c | 2 ++ include/trace/events/iommu.h | 2 +- 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index 8f2c7d5..feada31 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -1098,6 +1098,7 @@ int iommu_report_device_fault(struct device *dev, struct iommu_fault_event *evt) mutex_unlock(&fparam->lock); kfree(evt_pending); } + trace_dev_fault(dev, &evt->fault); done_unlock: mutex_unlock(¶m->lock); return ret; @@ -1146,6 +1147,7 @@ int iommu_page_response(struct device *dev, msg->flags = pasid_valid ? IOMMU_PAGE_RESP_PASID_VALID : 0; ret = domain->ops->page_response(dev, evt, msg); + trace_dev_page_response(dev, msg); list_del(&evt->list); kfree(evt); break; diff --git a/include/trace/events/iommu.h b/include/trace/events/iommu.h index 767b92c..7a7801b 100644 --- a/include/trace/events/iommu.h +++ b/include/trace/events/iommu.h @@ -219,7 +219,7 @@ TRACE_EVENT(dev_fault, TRACE_EVENT(dev_page_response, - TP_PROTO(struct device *dev, struct iommu_fault_page_response *msg), + TP_PROTO(struct device *dev, struct iommu_page_response *msg), TP_ARGS(dev, msg), -- 2.7.4