linux-kernel - [PATCH v2 23/27] rust: uaccess: add __rust

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Message-ID: <20260105-define-rust-helper-v2-23-51da5f454a67@google.com>
Date: Mon, 05 Jan 2026 12:42:36 +0000
From: Alice Ryhl <aliceryhl@...gle.com>
To: rust-for-linux@...r.kernel.org
Cc: linux-kernel@...r.kernel.org, Alice Ryhl <aliceryhl@...gle.com>, 
	Boqun Feng <boqun.feng@...il.com>, Gary Guo <gary@...yguo.net>, 
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: [PATCH v2 23/27] rust: uaccess: add __rust_helper to helpers

This is needed to inline these helpers into Rust code.

Reviewed-by: Boqun Feng <boqun.feng@...il.com>
Reviewed-by: Gary Guo <gary@...yguo.net>
Signed-off-by: Alice Ryhl <aliceryhl@...gle.com>
---
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 rust/helpers/uaccess.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/rust/helpers/uaccess.c b/rust/helpers/uaccess.c
index 4629b2d15529abf20d02352d587808b621749c61..d9625b9ee04669777e01af05034af35218557050 100644
--- a/rust/helpers/uaccess.c
+++ b/rust/helpers/uaccess.c
@@ -2,24 +2,26 @@
 
 #include <linux/uaccess.h>
 
-unsigned long rust_helper_copy_from_user(void *to, const void __user *from,
-					 unsigned long n)
+__rust_helper 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)
+__rust_helper unsigned long
+rust_helper_copy_to_user(void __user *to, const void *from, unsigned long n)
 {
 	return copy_to_user(to, from, n);
 }
 
 #ifdef INLINE_COPY_FROM_USER
+__rust_helper
 unsigned long rust_helper__copy_from_user(void *to, const void __user *from, unsigned long n)
 {
 	return _inline_copy_from_user(to, from, n);
 }
 
+__rust_helper
 unsigned long rust_helper__copy_to_user(void __user *to, const void *from, unsigned long n)
 {
 	return _inline_copy_to_user(to, from, n);

-- 
2.52.0.351.gbe84eed79e-goog