iommu: Add a few printk messages to group handling code
Write a message to the kernel log when a device is added or removed from a group and add debug messages to group allocation and release routines. Signed-off-by: Joerg Roedel <jroedel@suse.de>
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@ -128,6 +128,8 @@ static void iommu_group_release(struct kobject *kobj)
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{
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struct iommu_group *group = to_iommu_group(kobj);
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pr_debug("Releasing group %d\n", group->id);
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if (group->iommu_data_release)
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group->iommu_data_release(group->iommu_data);
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@ -207,6 +209,8 @@ again:
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*/
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kobject_put(&group->kobj);
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pr_debug("Allocated group %d\n", group->id);
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return group;
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}
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EXPORT_SYMBOL_GPL(iommu_group_alloc);
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@ -372,6 +376,9 @@ rename:
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IOMMU_GROUP_NOTIFY_ADD_DEVICE, dev);
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trace_add_device_to_group(group->id, dev);
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pr_info("Adding device %s to group %d\n", dev_name(dev), group->id);
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return 0;
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}
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EXPORT_SYMBOL_GPL(iommu_group_add_device);
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@ -388,6 +395,8 @@ void iommu_group_remove_device(struct device *dev)
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struct iommu_group *group = dev->iommu_group;
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struct iommu_device *tmp_device, *device = NULL;
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pr_info("Removing device %s from group %d\n", dev_name(dev), group->id);
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/* Pre-notify listeners that a device is being removed. */
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blocking_notifier_call_chain(&group->notifier,
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IOMMU_GROUP_NOTIFY_DEL_DEVICE, dev);
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