linux-kernel - [PATCH v5 03/19] trace/iommu: Add sva trace events

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Message-Id: <1565900005-62508-4-git-send-email-jacob.jun.pan@linux.intel.com>
Date:   Thu, 15 Aug 2019 13:13:09 -0700
From:   Jacob Pan <jacob.jun.pan@...ux.intel.com>
To:     iommu@...ts.linux-foundation.org,
        LKML <linux-kernel@...r.kernel.org>,
        Joerg Roedel <joro@...tes.org>,
        David Woodhouse <dwmw2@...radead.org>,
        Alex Williamson <alex.williamson@...hat.com>
Cc:     Eric Auger <eric.auger@...hat.com>, "Yi Liu" <yi.l.liu@...el.com>,
        "Tian, Kevin" <kevin.tian@...el.com>,
        Raj Ashok <ashok.raj@...el.com>,
        "Christoph Hellwig" <hch@...radead.org>,
        Jean-Philippe Brucker <jean-philippe.brucker@....com>,
        "Lu Baolu" <baolu.lu@...ux.intel.com>,
        Jonathan Cameron <jic23@...nel.org>
Subject: [PATCH v5 03/19] trace/iommu: Add sva trace events

From: Jean-Philippe Brucker <jean-philippe.brucker@....com>

For development only, trace I/O page faults and responses.

Signed-off-by: Jacob Pan <jacob.jun.pan@...ux.intel.com>
[JPB: removed the invalidate trace event, that will be added later]
Signed-off-by: Jean-Philippe Brucker <jean-philippe.brucker@....com>

Signed-off-by: Jacob Pan <jacob.jun.pan@...ux.intel.com>
---
 include/trace/events/iommu.h | 84 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 84 insertions(+)

diff --git a/include/trace/events/iommu.h b/include/trace/events/iommu.h
index 72b4582..767b92c 100644
--- a/include/trace/events/iommu.h
+++ b/include/trace/events/iommu.h
@@ -12,6 +12,8 @@
 #define _TRACE_IOMMU_H
 
 #include <linux/tracepoint.h>
+#include <linux/iommu.h>
+#include <uapi/linux/iommu.h>
 
 struct device;
 
@@ -161,6 +163,88 @@ DEFINE_EVENT(iommu_error, io_page_fault,
 
 	TP_ARGS(dev, iova, flags)
 );
+
+TRACE_EVENT(dev_fault,
+
+	TP_PROTO(struct device *dev,  struct iommu_fault *evt),
+
+	TP_ARGS(dev, evt),
+
+	TP_STRUCT__entry(
+		__string(device, dev_name(dev))
+		__field(int, type)
+		__field(int, reason)
+		__field(u64, addr)
+		__field(u64, fetch_addr)
+		__field(u32, pasid)
+		__field(u32, grpid)
+		__field(u32, flags)
+		__field(u32, prot)
+	),
+
+	TP_fast_assign(
+		__assign_str(device, dev_name(dev));
+		__entry->type = evt->type;
+		if (evt->type == IOMMU_FAULT_DMA_UNRECOV) {
+			__entry->reason		= evt->event.reason;
+			__entry->flags		= evt->event.flags;
+			__entry->pasid		= evt->event.pasid;
+			__entry->grpid		= 0;
+			__entry->prot		= evt->event.perm;
+			__entry->addr		= evt->event.addr;
+			__entry->fetch_addr	= evt->event.fetch_addr;
+		} else {
+			__entry->reason		= 0;
+			__entry->flags		= evt->prm.flags;
+			__entry->pasid		= evt->prm.pasid;
+			__entry->grpid		= evt->prm.grpid;
+			__entry->prot		= evt->prm.perm;
+			__entry->addr		= evt->prm.addr;
+			__entry->fetch_addr	= 0;
+		}
+	),
+
+	TP_printk("IOMMU:%s type=%d reason=%d addr=0x%016llx fetch=0x%016llx pasid=%d group=%d flags=%x prot=%d",
+		__get_str(device),
+		__entry->type,
+		__entry->reason,
+		__entry->addr,
+		__entry->fetch_addr,
+		__entry->pasid,
+		__entry->grpid,
+		__entry->flags,
+		__entry->prot
+	)
+);
+
+TRACE_EVENT(dev_page_response,
+
+	TP_PROTO(struct device *dev,  struct iommu_fault_page_response *msg),
+
+	TP_ARGS(dev, msg),
+
+	TP_STRUCT__entry(
+		__string(device, dev_name(dev))
+		__field(int, code)
+		__field(u32, pasid)
+		__field(u32, grpid)
+	),
+
+	TP_fast_assign(
+		__assign_str(device, dev_name(dev));
+		__entry->code = msg->code;
+		__entry->pasid = msg->pasid;
+		__entry->grpid = msg->grpid;
+	),
+
+	TP_printk("IOMMU:%s code=%d pasid=%d group=%d",
+		__get_str(device),
+		__entry->code,
+		__entry->pasid,
+		__entry->grpid
+	)
+);
+
 #endif /* _TRACE_IOMMU_H */
 
 /* This part must be outside protection */
-- 
2.7.4