[PATCH v2 11/11] rust: helpers: Remove uaccess helpers

Alistair Francis posted 11 patches 2 weeks, 1 day ago
There is a newer version of this series
[PATCH v2 11/11] rust: helpers: Remove uaccess helpers
Posted by Alistair Francis 2 weeks, 1 day ago
Now that we support wrap-static-fns we no longer need the custom helper.

Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
---
 rust/bindgen_static_functions   |  3 +++
 rust/bindings/bindings_helper.h |  1 +
 rust/helpers/helpers.c          |  6 ++----
 rust/helpers/uaccess.c          | 15 ---------------
 4 files changed, 6 insertions(+), 19 deletions(-)
 delete mode 100644 rust/helpers/uaccess.c

diff --git a/rust/bindgen_static_functions b/rust/bindgen_static_functions
index 8bc291a7a799..ec48ad2e8c78 100644
--- a/rust/bindgen_static_functions
+++ b/rust/bindgen_static_functions
@@ -27,3 +27,6 @@
 
 --allowlist-function get_task_struct
 --allowlist-function put_task_struct
+
+--allowlist-function copy_from_user
+--allowlist-function copy_to_user
diff --git a/rust/bindings/bindings_helper.h b/rust/bindings/bindings_helper.h
index eec195a21fb8..a850c21c432c 100644
--- a/rust/bindings/bindings_helper.h
+++ b/rust/bindings/bindings_helper.h
@@ -23,6 +23,7 @@
 #include <linux/sched/signal.h>
 #include <linux/sched/task.h>
 #include <linux/slab.h>
+#include <linux/uaccess.h>
 #include <linux/wait.h>
 #include <linux/workqueue.h>
 
diff --git a/rust/helpers/helpers.c b/rust/helpers/helpers.c
index ebe3a85c7210..42c28222f6c2 100644
--- a/rust/helpers/helpers.c
+++ b/rust/helpers/helpers.c
@@ -1,8 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * Non-trivial C macros cannot be used in Rust. Similarly, inlined C functions
- * cannot be called either. This file explicitly creates functions ("helpers")
- * that wrap those so that they can be called from Rust.
+ * Non-trivial C macros cannot be used in Rust. This file explicitly creates
+ * functions ("helpers") that wrap those so that they can be called from Rust.
  *
  * Sorted alphabetically.
  */
@@ -16,7 +15,6 @@
 #include "slab.c"
 #include "spinlock.c"
 #include "task.c"
-#include "uaccess.c"
 #include "vmalloc.c"
 #include "wait.c"
 #include "workqueue.c"
diff --git a/rust/helpers/uaccess.c b/rust/helpers/uaccess.c
deleted file mode 100644
index f49076f813cd..000000000000
--- a/rust/helpers/uaccess.c
+++ /dev/null
@@ -1,15 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-
-#include <linux/uaccess.h>
-
-unsigned long rust_helper_copy_from_user(void *to, const void __user *from,
-					 unsigned long n)
-{
-	return copy_from_user(to, from, n);
-}
-
-unsigned long rust_helper_copy_to_user(void __user *to, const void *from,
-				       unsigned long n)
-{
-	return copy_to_user(to, from, n);
-}
-- 
2.47.0