Files
linux/rust/helpers/refcount.c
Gary Guo bb38f35b35 rust: implement kernel::sync::Refcount
This is a wrapping layer of `include/linux/refcount.h`. Currently the
kernel refcount has already been used in `Arc`, however it calls into
FFI directly.

[boqun: Add the missing <> for the link in comment]
Signed-off-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Reviewed-by: Fiona Behrens <me@kloenk.dev>
Reviewed-by: Benno Lossin <lossin@kernel.org>
Reviewed-by: Elle Rhumsaa <elle@weathered-steel.dev>
Link: https://lore.kernel.org/r/20250723233312.3304339-2-gary@kernel.org
2025-09-15 09:38:35 +02:00

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C

// SPDX-License-Identifier: GPL-2.0
#include <linux/refcount.h>
refcount_t rust_helper_REFCOUNT_INIT(int n)
{
return (refcount_t)REFCOUNT_INIT(n);
}
void rust_helper_refcount_set(refcount_t *r, int n)
{
refcount_set(r, n);
}
void rust_helper_refcount_inc(refcount_t *r)
{
refcount_inc(r);
}
void rust_helper_refcount_dec(refcount_t *r)
{
refcount_dec(r);
}
bool rust_helper_refcount_dec_and_test(refcount_t *r)
{
return refcount_dec_and_test(r);
}