diff options
Diffstat (limited to 'drivers/iommu/iommu.c')
| -rw-r--r-- | drivers/iommu/iommu.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index 06d36a0..e5555fc 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -29,6 +29,7 @@ #include <linux/idr.h> #include <linux/notifier.h> #include <linux/err.h> +#include <trace/events/iommu.h> static struct kset *iommu_group_kset; static struct ida iommu_group_ida; @@ -363,6 +364,8 @@ rename: /* Notify any listeners about change to group. */ blocking_notifier_call_chain(&group->notifier, IOMMU_GROUP_NOTIFY_ADD_DEVICE, dev); + + trace_add_device_to_group(group->id, dev); return 0; } EXPORT_SYMBOL_GPL(iommu_group_add_device); @@ -399,6 +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; @@ -680,10 +685,14 @@ EXPORT_SYMBOL_GPL(iommu_domain_free); int iommu_attach_device(struct iommu_domain *domain, struct device *dev) { + int ret; if (unlikely(domain->ops->attach_dev == NULL)) return -ENODEV; - return domain->ops->attach_dev(domain, dev); + ret = domain->ops->attach_dev(domain, dev); + if (!ret) + trace_attach_device_to_domain(dev); + return ret; } EXPORT_SYMBOL_GPL(iommu_attach_device); @@ -693,6 +702,7 @@ void iommu_detach_device(struct iommu_domain *domain, struct device *dev) return; domain->ops->detach_dev(domain, dev); + trace_detach_device_from_domain(dev); } EXPORT_SYMBOL_GPL(iommu_detach_device); @@ -832,6 +842,8 @@ int iommu_map(struct iommu_domain *domain, unsigned long iova, /* unroll mapping in case something went wrong */ if (ret) iommu_unmap(domain, orig_iova, orig_size - size); + else + trace_map(iova, paddr, size); return ret; } @@ -880,6 +892,7 @@ size_t iommu_unmap(struct iommu_domain *domain, unsigned long iova, size_t size) unmapped += unmapped_page; } + trace_unmap(iova, 0, size); return unmapped; } EXPORT_SYMBOL_GPL(iommu_unmap); |
