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Message-ID: <20250319112822.1961241-2-bqe@google.com>
Date: Wed, 19 Mar 2025 11:27:28 +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] rust: adds bindings for bitmap.c and bitops.c
Adds bindings are for inline non-atomic methods __set_bit and
__clear_bit (bitops) as well as bitmap_copy_and_extend.
Update MAINTAINERS.
These are needed for providing a Rust Bitmap API.
Suggested-by: Alice Ryhl <aliceryhl@...gle.com>
Signed-off-by: Burak Emir <bqe@...gle.com>
---
Part of a series that introduces Rust Bitmap API that has received
a few rounds of review. Thanks for the helpful review comments.
Rebased on next-20250318 and split as requested in
https://lore.kernel.org/all/Z9nAVIokrWqoRiFR@thinkpad/
MAINTAINERS | 6 ++++++
rust/bindings/bindings_helper.h | 1 +
rust/helpers/bitmap.c | 9 +++++++++
rust/helpers/bitops.c | 13 +++++++++++++
rust/helpers/helpers.c | 2 ++
5 files changed, 31 insertions(+)
create mode 100644 rust/helpers/bitmap.c
create mode 100644 rust/helpers/bitops.c
diff --git a/MAINTAINERS b/MAINTAINERS
index ebf7fa9a814d..7cd15c25a43c 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
@@ -4127,6 +4128,11 @@ F: include/linux/bitops.h
F: lib/test_bitops.c
F: tools/*/bitops*
+BITOPS API BINDINGS [RUST]
+M: Yury Norov <yury.norov@...il.com>
+S: Maintained
+F: rust/helpers/bitops.c
+
BLINKM RGB LED DRIVER
M: Jan-Simon Moeller <jansimon.moeller@....de>
S: Maintained
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/bitops.c b/rust/helpers/bitops.c
new file mode 100644
index 000000000000..0ea1611b95dc
--- /dev/null
+++ b/rust/helpers/bitops.c
@@ -0,0 +1,13 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/bitops.h>
+
+void rust_helper___set_bit(unsigned int nr, unsigned long *addr)
+{
+ __set_bit(nr, addr);
+}
+
+void rust_helper___clear_bit(unsigned int nr, unsigned long *addr)
+{
+ __clear_bit(nr, addr);
+}
diff --git a/rust/helpers/helpers.c b/rust/helpers/helpers.c
index e1c21eba9b15..0c25cc86a52a 100644
--- a/rust/helpers/helpers.c
+++ b/rust/helpers/helpers.c
@@ -7,6 +7,8 @@
* Sorted alphabetically.
*/
+#include "bitmap.c"
+#include "bitops.c"
#include "blk.c"
#include "bug.c"
#include "build_assert.c"
--
2.49.0.395.g12beb8f557-goog
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