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| author | Shuah Khan | 2013-08-15 19:59:25 +0200 |
|---|---|---|
| committer | Joerg Roedel | 2013-09-24 12:35:25 +0200 |
| commit | 2e757086bdfdc9450dc2e4a5d2ec5431520a02c8 (patch) | |
| tree | 566857901d37dc35ad3a10fdf5b684e4d386abb5 /drivers/iommu/iommu.c | |
| parent | iommu: Change iommu driver to call add_device_to_group trace event (diff) | |
| download | kernel-qcow2-linux-2e757086bdfdc9450dc2e4a5d2ec5431520a02c8.tar.gz kernel-qcow2-linux-2e757086bdfdc9450dc2e4a5d2ec5431520a02c8.tar.xz kernel-qcow2-linux-2e757086bdfdc9450dc2e4a5d2ec5431520a02c8.zip | |
iommu: Change iommu driver to call remove_device_to_group trace event
Change iommu driver to call remove_device_to_group trace event. This
iommu_group class event can be enabled to trigger when devices get
removed from an iommu group. Trace information includes iommu group id and
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] .... 1.854101: remove_device_from_group: IOMMU: groupID=0 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/iommu.c')
| -rw-r--r-- | drivers/iommu/iommu.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index 349c92dfce05..278055bd0715 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -402,6 +402,8 @@ void iommu_group_remove_device(struct device *dev) sysfs_remove_link(group->devices_kobj, device->name); sysfs_remove_link(&dev->kobj, "iommu_group"); + trace_remove_device_from_group(group->id, dev); + kfree(device->name); kfree(device); dev->iommu_group = NULL; |