From 9dc04365500340e6d60a996333d562af747337b1 Mon Sep 17 00:00:00 2001
From: Wedson Almeida Filho <wedsonaf@gmail.com>
Date: Wed, 28 Dec 2022 06:03:40 +0000
Subject: rust: sync: add `Arc` for ref-counted allocations

This is a basic implementation of `Arc` backed by C's `refcount_t`. It
allows Rust code to idiomatically allocate memory that is ref-counted.

Cc: Will Deacon <will@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Boqun Feng <boqun.feng@gmail.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Wedson Almeida Filho <wedsonaf@gmail.com>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Reviewed-by: Vincenzo Palazzo <vincenzopalazzodev@gmail.com>
Acked-by: Boqun Feng <boqun.feng@gmail.com>
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
---
 rust/bindings/bindings_helper.h | 1 +
 rust/bindings/lib.rs            | 1 +
 2 files changed, 2 insertions(+)

(limited to 'rust/bindings')

diff --git a/rust/bindings/bindings_helper.h b/rust/bindings/bindings_helper.h
index c48bc284214a..75d85bd6c592 100644
--- a/rust/bindings/bindings_helper.h
+++ b/rust/bindings/bindings_helper.h
@@ -7,6 +7,7 @@
  */
 
 #include <linux/slab.h>
+#include <linux/refcount.h>
 
 /* `bindgen` gets confused at certain things. */
 const gfp_t BINDINGS_GFP_KERNEL = GFP_KERNEL;
diff --git a/rust/bindings/lib.rs b/rust/bindings/lib.rs
index 6c50ee62c56b..7b246454e009 100644
--- a/rust/bindings/lib.rs
+++ b/rust/bindings/lib.rs
@@ -41,6 +41,7 @@ mod bindings_raw {
 #[allow(dead_code)]
 mod bindings_helper {
     // Import the generated bindings for types.
+    use super::bindings_raw::*;
     include!(concat!(
         env!("OBJTREE"),
         "/rust/bindings/bindings_helpers_generated.rs"
-- 
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