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From: Jacob Pan <jacob.jun.pan@linux.intel.com>
To: iommu@lists.linux-foundation.org,
	LKML <linux-kernel@vger.kernel.org>,
	Joerg Roedel <joro@8bytes.org>,
	David Woodhouse <dwmw2@infradead.org>,
	Jean-Philippe Brucker <jean-philippe.brucker@arm.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Rafael Wysocki <rafael.j.wysocki@intel.com>
Cc: "Liu, Yi L" <yi.l.liu@intel.com>,
	Lan Tianyu <tianyu.lan@intel.com>,
	"Tian, Kevin" <kevin.tian@intel.com>,
	Raj Ashok <ashok.raj@intel.com>,
	Alex Williamson <alex.williamson@redhat.com>,
	Jean Delvare <khali@linux-fr.org>,
	"Christoph Hellwig" <hch@infradead.org>,
	Jacob Pan <jacob.jun.pan@linux.intel.com>
Subject: [PATCH v4 22/22] iommu: use sva invalidate and device fault trace event
Date: Thu, 22 Mar 2018 20:12:14 -0700	[thread overview]
Message-ID: <1521774734-48433-23-git-send-email-jacob.jun.pan@linux.intel.com> (raw)
In-Reply-To: <1521774734-48433-1-git-send-email-jacob.jun.pan@linux.intel.com>

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: Jacob Pan <jacob.jun.pan@linux.intel.com>
---
 drivers/iommu/iommu.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index 1e74944..e5fc345 100644
--- a/drivers/iommu/iommu.c
+++ b/drivers/iommu/iommu.c
@@ -979,6 +979,7 @@ 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;
@@ -1547,6 +1548,7 @@ 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;
 }
@@ -1584,6 +1586,7 @@ 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);
-- 
2.7.4

  parent reply	other threads:[~2018-03-23  3:12 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-03-23  3:11 [PATCH v4 00/22] IOMMU and VT-d driver support for Shared Virtual Address (SVA) Jacob Pan
2018-03-23  3:11 ` [PATCH v4 01/22] iommu: introduce bind_pasid_table API function Jacob Pan
2018-03-23  3:11 ` [PATCH v4 02/22] iommu/vt-d: move device_domain_info to header Jacob Pan
2018-03-23  3:11 ` [PATCH v4 03/22] iommu/vt-d: add a flag for pasid table bound status Jacob Pan
2018-03-23  3:11 ` [PATCH v4 04/22] iommu/vt-d: add bind_pasid_table function Jacob Pan
2018-03-23  3:11 ` [PATCH v4 05/22] iommu: introduce iommu invalidate API function Jacob Pan
2018-03-23  3:11 ` [PATCH v4 06/22] iommu/vt-d: add definitions for PFSID Jacob Pan
2018-03-23  3:11 ` [PATCH v4 07/22] iommu/vt-d: fix dev iotlb pfsid use Jacob Pan
2018-03-23  3:12 ` [PATCH v4 08/22] iommu/vt-d: support flushing more translation cache types Jacob Pan
2018-03-23  3:12 ` [PATCH v4 09/22] iommu/vt-d: add svm/sva invalidate function Jacob Pan
2018-03-23  3:12 ` [PATCH v4 10/22] iommu: introduce device fault data Jacob Pan
2018-03-23  3:12 ` [PATCH v4 11/22] driver core: add per device iommu param Jacob Pan
2018-03-23  8:12   ` Greg Kroah-Hartman
2018-03-23  3:12 ` [PATCH v4 12/22] iommu: introduce device fault report API Jacob Pan
2018-03-23  3:12 ` [PATCH v4 13/22] iommu: introduce page response function Jacob Pan
2018-03-23  3:12 ` [PATCH v4 14/22] iommu: handle page response timeout Jacob Pan
2018-03-23  3:12 ` [PATCH v4 15/22] iommu/config: add build dependency for dmar Jacob Pan
2018-03-23  3:12 ` [PATCH v4 16/22] iommu/vt-d: report non-recoverable faults to device Jacob Pan
2018-05-14  6:55   ` Liu, Yi L
2018-03-23  3:12 ` [PATCH v4 17/22] iommu/intel-svm: report device page request Jacob Pan
2018-05-14  6:56   ` Liu, Yi L
2018-05-14 18:30     ` Jacob Pan
2018-03-23  3:12 ` [PATCH v4 18/22] iommu/intel-svm: replace dev ops with fault report API Jacob Pan
2018-03-23  3:12 ` [PATCH v4 19/22] iommu/intel-svm: do not flush iotlb for viommu Jacob Pan
2018-03-23  3:12 ` [PATCH v4 20/22] iommu/vt-d: add intel iommu page response function Jacob Pan
2018-03-24 23:19   ` kbuild test robot
2018-03-24 23:19   ` [RFC PATCH] iommu/vt-d: intel_iommu_page_response() can be static kbuild test robot
2018-03-23  3:12 ` [PATCH v4 21/22] trace/iommu: add sva trace events Jacob Pan
2018-03-23  3:12 ` Jacob Pan [this message]
2018-04-16 21:48 [PATCH v4 00/22] IOMMU and VT-d driver support for Shared Virtual Address (SVA) Jacob Pan
2018-04-16 21:49 ` [PATCH v4 22/22] iommu: use sva invalidate and device fault trace event Jacob Pan

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