linux-kernel - [PATCH 04/10] iommu/ioasid: Rename ioasid_set_data to avoid confusion with ioasid

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Date:   Wed, 25 Mar 2020 10:55:25 -0700
From:   Jacob Pan <jacob.jun.pan@...ux.intel.com>
To:     Joerg Roedel <joro@...tes.org>,
        Alex Williamson <alex.williamson@...hat.com>,
        "Lu Baolu" <baolu.lu@...ux.intel.com>,
        iommu@...ts.linux-foundation.org,
        LKML <linux-kernel@...r.kernel.org>,
        David Woodhouse <dwmw2@...radead.org>,
        Jean-Philippe Brucker <jean-philippe@...aro.com>
Cc:     "Yi Liu" <yi.l.liu@...el.com>,
        "Tian, Kevin" <kevin.tian@...el.com>,
        Raj Ashok <ashok.raj@...el.com>,
        "Christoph Hellwig" <hch@...radead.org>,
        Jonathan Cameron <jic23@...nel.org>,
        Eric Auger <eric.auger@...hat.com>,
        Jacob Pan <jacob.jun.pan@...ux.intel.com>
Subject: [PATCH 04/10] iommu/ioasid: Rename ioasid_set_data to avoid confusion with ioasid_set

IOASID set refers to a group of IOASIDs that shares the same token.
ioasid_set_data() function is used to attach a private data to an IOASID,
rename it to ioasid_attach_data() avoid being confused with the group/set
concept.

Signed-off-by: Jacob Pan <jacob.jun.pan@...ux.intel.com>
---
 drivers/iommu/intel-svm.c | 11 ++++++-----
 drivers/iommu/ioasid.c    |  6 +++---
 include/linux/ioasid.h    |  4 ++--
 3 files changed, 11 insertions(+), 10 deletions(-)

diff --git a/drivers/iommu/intel-svm.c b/drivers/iommu/intel-svm.c
index b6405df6cfb5..1991587fd3fd 100644
--- a/drivers/iommu/intel-svm.c
+++ b/drivers/iommu/intel-svm.c
@@ -319,14 +319,15 @@ int intel_svm_bind_gpasid(struct iommu_domain *domain,
 			svm->gpasid = data->gpasid;
 			svm->flags |= SVM_FLAG_GUEST_PASID;
 		}
-		ioasid_set_data(data->hpasid, svm);
+
+		ioasid_attach_data(data->hpasid, svm);
 		INIT_LIST_HEAD_RCU(&svm->devs);
 		mmput(svm->mm);
 	}
 	sdev = kzalloc(sizeof(*sdev), GFP_KERNEL);
 	if (!sdev) {
 		if (list_empty(&svm->devs)) {
-			ioasid_set_data(data->hpasid, NULL);
+			ioasid_attach_data(data->hpasid, NULL);
 			kfree(svm);
 		}
 		ret = -ENOMEM;
@@ -346,7 +347,7 @@ int intel_svm_bind_gpasid(struct iommu_domain *domain,
 		 * was allocated in this function.
 		 */
 		if (list_empty(&svm->devs)) {
-			ioasid_set_data(data->hpasid, NULL);
+			ioasid_attach_data(data->hpasid, NULL);
 			kfree(svm);
 		}
 		goto out;
@@ -375,7 +376,7 @@ int intel_svm_bind_gpasid(struct iommu_domain *domain,
 		 */
 		kfree(sdev);
 		if (list_empty(&svm->devs)) {
-			ioasid_set_data(data->hpasid, NULL);
+			ioasid_attach_data(data->hpasid, NULL);
 			kfree(svm);
 		}
 		goto out;
@@ -438,7 +439,7 @@ int intel_svm_unbind_gpasid(struct device *dev, int pasid)
 				 * that PASID allocated by one guest cannot be
 				 * used by another.
 				 */
-				ioasid_set_data(pasid, NULL);
+				ioasid_attach_data(pasid, NULL);
 				kfree(svm);
 			}
 		}
diff --git a/drivers/iommu/ioasid.c b/drivers/iommu/ioasid.c
index 27ee57f7079b..6265d2dbbced 100644
--- a/drivers/iommu/ioasid.c
+++ b/drivers/iommu/ioasid.c
@@ -292,14 +292,14 @@ void ioasid_unregister_allocator(struct ioasid_allocator_ops *ops)
 EXPORT_SYMBOL_GPL(ioasid_unregister_allocator);
 
 /**
- * ioasid_set_data - Set private data for an allocated ioasid
+ * ioasid_attach_data - Set private data for an allocated ioasid
  * @ioasid: the ID to set data
  * @data:   the private data
  *
  * For IOASID that is already allocated, private data can be set
  * via this API. Future lookup can be done via ioasid_find.
  */
-int ioasid_set_data(ioasid_t ioasid, void *data)
+int ioasid_attach_data(ioasid_t ioasid, void *data)
 {
 	struct ioasid_data *ioasid_data;
 	int ret = 0;
@@ -321,7 +321,7 @@ int ioasid_set_data(ioasid_t ioasid, void *data)
 
 	return ret;
 }
-EXPORT_SYMBOL_GPL(ioasid_set_data);
+EXPORT_SYMBOL_GPL(ioasid_attach_data);
 
 /**
  * ioasid_alloc - Allocate an IOASID
diff --git a/include/linux/ioasid.h b/include/linux/ioasid.h
index be158e03c034..8c82d2625671 100644
--- a/include/linux/ioasid.h
+++ b/include/linux/ioasid.h
@@ -39,7 +39,7 @@ void *ioasid_find(struct ioasid_set *set, ioasid_t ioasid,
 		  bool (*getter)(void *));
 int ioasid_register_allocator(struct ioasid_allocator_ops *allocator);
 void ioasid_unregister_allocator(struct ioasid_allocator_ops *allocator);
-int ioasid_set_data(ioasid_t ioasid, void *data);
+int ioasid_attach_data(ioasid_t ioasid, void *data);
 void ioasid_install_capacity(ioasid_t total);
 int ioasid_alloc_set(struct ioasid_set *token, ioasid_t quota, int *sid);
 void ioasid_free_set(int sid, bool destroy_set);
@@ -79,7 +79,7 @@ static inline void ioasid_unregister_allocator(struct ioasid_allocator_ops *allo
 {
 }
 
-static inline int ioasid_set_data(ioasid_t ioasid, void *data)
+static inline int ioasid_attach_data(ioasid_t ioasid, void *data)
 {
 	return -ENOTSUPP;
 }
-- 
2.7.4