From: FUJITA Tomonori <fujita.tomonori@gmail.com>
Date: Sat, 27 Dec 2025 11:59:51 +0000 (+0900)
Subject: rust: helpers: Add i8/i16 atomic try_cmpxchg_relaxed helpers
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8de731a6c75547602601a5d219b5cf259ce2b38b;p=thirdparty%2Fkernel%2Flinux.git

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
---

diff --git a/rust/helpers/atomic_ext.c b/rust/helpers/atomic_ext.c
index 962ea05dfb9c5..7d0c2bd340daa 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);
+}