linux-kernel - [PATCH v5 1/4] rust: add bindings for bitmap.h

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Message-ID: <20250321111535.3740332-2-bqe@google.com>
Date: Fri, 21 Mar 2025 11:15:29 +0000
From: Burak Emir <bqe@...gle.com>
To: Yury Norov <yury.norov@...il.com>
Cc: Burak Emir <bqe@...gle.com>, Rasmus Villemoes <linux@...musvillemoes.dk>, 
	Viresh Kumar <viresh.kumar@...aro.org>, Miguel Ojeda <ojeda@...nel.org>, 
	Alex Gaynor <alex.gaynor@...il.com>, Boqun Feng <boqun.feng@...il.com>, 
	Gary Guo <gary@...yguo.net>, 
	"Björn Roy Baron" <bjorn3_gh@...tonmail.com>, Benno Lossin <benno.lossin@...ton.me>, 
	Andreas Hindborg <a.hindborg@...nel.org>, Alice Ryhl <aliceryhl@...gle.com>, 
	Trevor Gross <tmgross@...ch.edu>, rust-for-linux@...r.kernel.org, 
	linux-kernel@...r.kernel.org
Subject: [PATCH v5 1/4] rust: add bindings for bitmap.h

Makes the bitmap_copy_and_extend inline function available to Rust.
Adds F: to existing MAINTAINERS section BITMAP API BINDINGS [RUST].

Suggested-by: Alice Ryhl <aliceryhl@...gle.com>
Signed-off-by: Burak Emir <bqe@...gle.com>
---
 MAINTAINERS                     | 1 +
 rust/bindings/bindings_helper.h | 1 +
 rust/helpers/bitmap.c           | 9 +++++++++
 rust/helpers/helpers.c          | 1 +
 4 files changed, 12 insertions(+)
 create mode 100644 rust/helpers/bitmap.c

diff --git a/MAINTAINERS b/MAINTAINERS
index ebf7fa9a814d..52fc47a28b4c 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -4111,6 +4111,7 @@ F:	tools/lib/find_bit.c
 BITMAP API BINDINGS [RUST]
 M:	Yury Norov <yury.norov@...il.com>
 S:	Maintained
+F:	rust/helpers/bitmap.c
 F:	rust/helpers/cpumask.c
 
 BITOPS API
diff --git a/rust/bindings/bindings_helper.h b/rust/bindings/bindings_helper.h
index fcefe3068a28..4f9374c2d7e5 100644
--- a/rust/bindings/bindings_helper.h
+++ b/rust/bindings/bindings_helper.h
@@ -7,6 +7,7 @@
  */
 
 #include <kunit/test.h>
+#include <linux/bitmap.h>
 #include <linux/blk-mq.h>
 #include <linux/blk_types.h>
 #include <linux/blkdev.h>
diff --git a/rust/helpers/bitmap.c b/rust/helpers/bitmap.c
new file mode 100644
index 000000000000..a50e2f082e47
--- /dev/null
+++ b/rust/helpers/bitmap.c
@@ -0,0 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/bitmap.h>
+
+void rust_helper_bitmap_copy_and_extend(unsigned long *to, const unsigned long *from,
+		unsigned int count, unsigned int size)
+{
+	bitmap_copy_and_extend(to, from, count, size);
+}
diff --git a/rust/helpers/helpers.c b/rust/helpers/helpers.c
index e1c21eba9b15..d4a60f1d6cc4 100644
--- a/rust/helpers/helpers.c
+++ b/rust/helpers/helpers.c
@@ -7,6 +7,7 @@
  * Sorted alphabetically.
  */
 
+#include "bitmap.c"
 #include "blk.c"
 #include "bug.c"
 #include "build_assert.c"
-- 
2.49.0.395.g12beb8f557-goog