[PATCH v6 2/4] rust: add bindings for bitops.h

[Burak Emir]

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@xxxxxxxxxx>
Suggested-by: Yury Norov <yury.norov@xxxxxxxxx>
Signed-off-by: Burak Emir <bqe@xxxxxxxxxx>
---
 MAINTAINERS            |  5 +++++
 rust/helpers/bitops.c  | 23 +++++++++++++++++++++++
 rust/helpers/helpers.c |  1 +
 3 files changed, 29 insertions(+)
 create mode 100644 rust/helpers/bitops.c

diff --git a/MAINTAINERS b/MAINTAINERS
index fcc56f7d7f16..11bc11945838 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -4048,6 +4048,11 @@ F:	include/linux/bitops.h
 F:	lib/test_bitops.c
 F:	tools/*/bitops*
 
+BITOPS API BINDINGS [RUST]
+M:	Yury Norov <yury.norov@xxxxxxxxx>
+S:	Maintained
+F:	rust/helpers/bitops.c
+
 BLINKM RGB LED DRIVER
 M:	Jan-Simon Moeller <jansimon.moeller@xxxxxx>
 S:	Maintained
diff --git a/rust/helpers/bitops.c b/rust/helpers/bitops.c
new file mode 100644
index 000000000000..1fe9e3b23a39
--- /dev/null
+++ b/rust/helpers/bitops.c
@@ -0,0 +1,23 @@
+// 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);
+}
+
+void rust_helper_set_bit(unsigned int nr, volatile unsigned long *addr)
+{
+	set_bit(nr, addr);
+}
+
+void rust_helper_clear_bit(unsigned int nr, volatile unsigned long *addr)
+{
+	clear_bit(nr, addr);
+}
diff --git a/rust/helpers/helpers.c b/rust/helpers/helpers.c
index d4a60f1d6cc4..0c25cc86a52a 100644
--- a/rust/helpers/helpers.c
+++ b/rust/helpers/helpers.c
@@ -8,6 +8,7 @@
  */
 
 #include "bitmap.c"
+#include "bitops.c"
 #include "blk.c"
 #include "bug.c"
 #include "build_assert.c"
-- 
2.49.0.395.g12beb8f557-goog