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| author | Joerg Roedel <jroedel@suse.de> | 2015-05-28 19:41:25 +0300 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2015-06-05 16:13:09 +0300 |
| commit | 269aa808a990b3fdd0e7ec9e04322284c40748c4 (patch) | |
| tree | 2f7f8817e518eaf77f0e735cbef0e7bd0cd4610e /drivers/iommu/iommu.c | |
| parent | 92e7066fde31d5ac48a9bccc12d3063d251dd079 (diff) | |
| download | linux-269aa808a990b3fdd0e7ec9e04322284c40748c4.tar.xz | |
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>
Diffstat (limited to 'drivers/iommu/iommu.c')
| -rw-r--r-- | drivers/iommu/iommu.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index c31bfd027979..755e4889046a 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -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); |