Messages in this thread Patch in this message | | | From | Shuah Khan <> | Subject | [PATCH 5/7] iommu: Change iommu driver to call detach_device_to_domain trace event | Date | Thu, 15 Aug 2013 11:59:27 -0600 |
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Change iommu driver to call detach_device_to_domain trace event. This iommu_device class event can be enabled to trigger when devices are detached from a domain. Trace information includes device name.
Testing: Added trace calls to iommu_prepare_identity_map() for testing some of the conditions that are hard to trigger. Here is the trace from the testing:
swapper/0-1 [003] .... 1.854102: detach_device_from_domain: IOMMU: device=0000:00:02.0
Signed-off-by: Shuah Khan <shuah.kh@samsung.com> --- drivers/iommu/iommu.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index 74c371c..b630754 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -702,6 +702,7 @@ void iommu_detach_device(struct iommu_domain *domain, struct device *dev) return; domain->ops->detach_dev(domain, dev); + trace_detach_device_from_domain(dev); } EXPORT_SYMBOL_GPL(iommu_detach_device); -- 1.7.10.4
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