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| author | Shuah Khan <shuah.kh@samsung.com> | 2013-08-15 21:59:26 +0400 |
|---|---|---|
| committer | Joerg Roedel <joro@8bytes.org> | 2013-09-24 14:35:25 +0400 |
| commit | b54db778858bc83f9231e5b358cb978f559f7016 (patch) | |
| tree | 8eb88b179a4dbafc6821b8f7c3660e2a26a03c06 /drivers/iommu | |
| parent | 2e757086bdfdc9450dc2e4a5d2ec5431520a02c8 (diff) | |
| download | linux-b54db778858bc83f9231e5b358cb978f559f7016.tar.xz | |
iommu: Change iommu driver to call attach_device_to_domain trace event
Change iommu driver to call attach_device_to_domain trace event. This
iommu_device class event can be enabled to trigger when devices are attached
to 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: attach_device_to_domain: IOMMU: device=0000:00:02.0
Signed-off-by: Shuah Khan <shuah.kh@samsung.com>
Signed-off-by: Joerg Roedel <joro@8bytes.org>
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/iommu.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index 278055bd0715..74c371c53ee4 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -685,10 +685,14 @@ EXPORT_SYMBOL_GPL(iommu_domain_free); int iommu_attach_device(struct iommu_domain *domain, struct device *dev) { + int ret; if (unlikely(domain->ops->attach_dev == NULL)) return -ENODEV; - return domain->ops->attach_dev(domain, dev); + ret = domain->ops->attach_dev(domain, dev); + if (!ret) + trace_attach_device_to_domain(dev); + return ret; } EXPORT_SYMBOL_GPL(iommu_attach_device); |