The following commit has been merged into the locking/core branch of tip:

Commit-ID:     8de731a6c75547602601a5d219b5cf259ce2b38b
Gitweb:        https://git.kernel.org/tip/8de731a6c75547602601a5d219b5cf259ce2b38b
Author:        FUJITA Tomonori <fujita.tomonori@gmail.com>
AuthorDate:    Sat, 27 Dec 2025 20:59:51 +09:00
Committer:     Boqun Feng <boqun.feng@gmail.com>
CommitterDate: Fri, 09 Jan 2026 19:01:41 +08:00

rust: helpers: Add i8/i16 atomic try_cmpxchg_relaxed helpers

Add i8/i16 atomic try_cmpxchg_relaxed helpers that call
try_cmpxchg_relaxed() macro implementing atomic try_cmpxchg_relaxed
using architecture-specific instructions.

[boqun: Use try_cmpxchg_relaxed() instead of raw_try_cmpxchg_relaxed()]

Signed-off-by: FUJITA Tomonori <fujita.tomonori@gmail.com>
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
Link: https://patch.msgid.link/20251227115951.1424458-5-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 962ea05..7d0c2bd 100644
--- a/rust/helpers/atomic_ext.c
+++ b/rust/helpers/atomic_ext.c
@@ -127,3 +127,13 @@ __rust_helper bool rust_helper_atomic_i16_try_cmpxchg_release(s16 *ptr, s16 *old
 {
 	return try_cmpxchg_release(ptr, old, new);
 }
+
+__rust_helper bool rust_helper_atomic_i8_try_cmpxchg_relaxed(s8 *ptr, s8 *old, s8 new)
+{
+	return try_cmpxchg_relaxed(ptr, old, new);
+}
+
+__rust_helper bool rust_helper_atomic_i16_try_cmpxchg_relaxed(s16 *ptr, s16 *old, s16 new)
+{
+	return try_cmpxchg_relaxed(ptr, old, new);
+}