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rust: add bindings for bitops.h

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Makes atomic set_bit and clear_bit inline functions as well as the
non-atomic variants __set_bit and __clear_bit available to Rust.
Adds a new MAINTAINERS section BITOPS API BINDINGS [RUST].

Suggested-by: Alice Ryhl <aliceryhl@google.com>
Suggested-by: Yury Norov <yury.norov@gmail.com>
Signed-off-by: Burak Emir <bqe@google.com>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Acked-by: Yury Norov (NVIDIA) <yury.norov@gmail.com>
Signed-off-by: Yury Norov (NVIDIA) <yury.norov@gmail.com>
This commit is contained in:
Burak Emir
2025-09-08 07:21:52 +00:00
committed by Yury Norov (NVIDIA)
parent 0452b4ab29
commit 6cf93a9ed3
3 changed files with 29 additions and 0 deletions
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5
MAINTAINERS
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@@ -4316,6 +4316,11 @@ F: include/linux/bitops.h
F: lib/test_bitops.c
F: tools/*/bitops*
BITOPS API BINDINGS [RUST]
M: Yury Norov <yury.norov@gmail.com>
S: Maintained
F: rust/helpers/bitops.c
BLINKM RGB LED DRIVER
M: Jan-Simon Moeller <jansimon.moeller@gmx.de>
S: Maintained

23
rust/helpers/bitops.c Normal file
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@@ -0,0 +1,23 @@
// SPDX-License-Identifier: GPL-2.0
#include <linux/bitops.h>
void rust_helper___set_bit(unsigned long nr, unsigned long *addr)
{
__set_bit(nr, addr);
}
void rust_helper___clear_bit(unsigned long nr, unsigned long *addr)
{
__clear_bit(nr, addr);
}
void rust_helper_set_bit(unsigned long nr, volatile unsigned long *addr)
{
set_bit(nr, addr);
}
void rust_helper_clear_bit(unsigned long nr, volatile unsigned long *addr)
{
clear_bit(nr, addr);
}

1
rust/helpers/helpers.c
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@@ -9,6 +9,7 @@
#include "auxiliary.c"
#include "bitmap.c"
#include "bitops.c"
#include "blk.c"
#include "bug.c"
#include "build_assert.c"