The following commit has been merged into the locking/core branch of tip:
Commit-ID: ab717dd98bee964add2161d94193d756fdef614c
Gitweb: https://git.kernel.org/tip/ab717dd98bee964add2161d94193d756fdef614c
Author: FUJITA Tomonori <fujita.tomonori@gmail.com>
AuthorDate: Tue, 23 Dec 2025 15:21:38 +09:00
Committer: Boqun Feng <boqun.feng@gmail.com>
CommitterDate: Fri, 09 Jan 2026 19:01:40 +08:00
rust: helpers: Add i8/i16 atomic xchg_acquire helpers
Add i8/i16 atomic xchg_acquire helpers that call xchg_acquire() macro
implementing atomic xchg_acquire using architecture-specific
instructions.
[boqun: Use xchg_acquire() instead of raw_xchg_acquire()]
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@gmail.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
Link: https://patch.msgid.link/20251223062140.938325-3-fujita.tomonori@gmail.com
---
rust/helpers/atomic_ext.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/rust/helpers/atomic_ext.c b/rust/helpers/atomic_ext.c
index 3136255..177bb36 100644
--- a/rust/helpers/atomic_ext.c
+++ b/rust/helpers/atomic_ext.c
@@ -60,3 +60,13 @@ __rust_helper s16 rust_helper_atomic_i16_xchg(s16 *ptr, s16 new)
{
return xchg(ptr, new);
}
+
+__rust_helper s8 rust_helper_atomic_i8_xchg_acquire(s8 *ptr, s8 new)
+{
+ return xchg_acquire(ptr, new);
+}
+
+__rust_helper s16 rust_helper_atomic_i16_xchg_acquire(s16 *ptr, s16 new)
+{
+ return xchg_acquire(ptr, new);
+}