From bb38f35b35f9de0cebc4d62ea73482454e38cef3 Mon Sep 17 00:00:00 2001 From: Gary Guo Date: Thu, 4 Sep 2025 21:41:37 -0700 Subject: 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 Signed-off-by: Boqun Feng Signed-off-by: Peter Zijlstra (Intel) Reviewed-by: Alice Ryhl Reviewed-by: Boqun Feng Reviewed-by: Fiona Behrens Reviewed-by: Benno Lossin Reviewed-by: Elle Rhumsaa Link: https://lore.kernel.org/r/20250723233312.3304339-2-gary@kernel.org --- rust/helpers/refcount.c | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'rust/helpers/refcount.c') diff --git a/rust/helpers/refcount.c b/rust/helpers/refcount.c index d6adbd2e45a1..d175898ad7b8 100644 --- a/rust/helpers/refcount.c +++ b/rust/helpers/refcount.c @@ -7,11 +7,21 @@ 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); -- cgit v1.2.3