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Commit 269aa808 authored by Joerg Roedel's avatar Joerg Roedel
Browse files

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: default avatarJoerg Roedel <jroedel@suse.de>
parent 92e7066f

drivers/iommu/iommu.c

+9 −0
Original line number Diff line number Diff line
@@ -128,6 +128,8 @@ static void iommu_group_release(struct kobject *kobj) 
{

	struct iommu_group *group = to_iommu_group(kobj);



	pr_debug("Releasing group %d\n", group->id);



	if (group->iommu_data_release)

		group->iommu_data_release(group->iommu_data);
@@ -207,6 +209,8 @@ struct iommu_group *iommu_group_alloc(void) 
	 */

	kobject_put(&group->kobj);



	pr_debug("Allocated group %d\n", group->id);



	return group;

}

EXPORT_SYMBOL_GPL(iommu_group_alloc);
@@ -372,6 +376,9 @@ int iommu_group_add_device(struct iommu_group *group, struct device *dev) 
				     IOMMU_GROUP_NOTIFY_ADD_DEVICE, dev);



	trace_add_device_to_group(group->id, dev);



	pr_info("Adding device %s to group %d\n", dev_name(dev), group->id);



	return 0;

}

EXPORT_SYMBOL_GPL(iommu_group_add_device);
@@ -388,6 +395,8 @@ void iommu_group_remove_device(struct device *dev) 
	struct iommu_group *group = dev->iommu_group;

	struct iommu_device *tmp_device, *device = NULL;



	pr_info("Removing device %s from group %d\n", dev_name(dev), group->id);



	/* Pre-notify listeners that a device is being removed. */

	blocking_notifier_call_chain(&group->notifier,

				     IOMMU_GROUP_NOTIFY_DEL_DEVICE, dev);