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alistair23-linux
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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>
hifive-unleashed-5.1
Joerg Roedel 2015-05-28 18:41:25 +02:00
parent 92e7066fde
commit 269aa808a9
1 changed files with 9 additions and 0 deletions
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9
drivers/iommu/iommu.c
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@ -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 @@ again:
*/
kobject_put(&group->kobj);
pr_debug("Allocated group %d\n", group->id);
return group;
}
EXPORT_SYMBOL_GPL(iommu_group_alloc);
@ -372,6 +376,9 @@ rename:
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);