From: FUJITA Tomonori <fujita.tomonori@gmail.com>
Date: Sat, 27 Dec 2025 11:59:49 +0000 (+0900)
Subject: rust: helpers: Add i8/i16 atomic try_cmpxchg_acquire helpers
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fed6aaa392c301721144303d64b7c68575d9d5ef;p=thirdparty%2Fkernel%2Flinux.git

rust: helpers: Add i8/i16 atomic try_cmpxchg_acquire helpers

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

[boqun: Use try_cmpxchg_acquire() instead of raw_try_cmpxchg_acquire()]

Signed-off-by: FUJITA Tomonori <fujita.tomonori@gmail.com>
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
Link: https://patch.msgid.link/20251227115951.1424458-3-fujita.tomonori@gmail.com
---

diff --git a/rust/helpers/atomic_ext.c b/rust/helpers/atomic_ext.c
index 5ee127f1cc80c..b6efec14e5b35 100644
--- a/rust/helpers/atomic_ext.c
+++ b/rust/helpers/atomic_ext.c
@@ -107,3 +107,13 @@ __rust_helper bool rust_helper_atomic_i16_try_cmpxchg(s16 *ptr, s16 *old, s16 ne
 {
 	return try_cmpxchg(ptr, old, new);
 }
+
+__rust_helper bool rust_helper_atomic_i8_try_cmpxchg_acquire(s8 *ptr, s8 *old, s8 new)
+{
+	return try_cmpxchg_acquire(ptr, old, new);
+}
+
+__rust_helper bool rust_helper_atomic_i16_try_cmpxchg_acquire(s16 *ptr, s16 *old, s16 new)
+{
+	return try_cmpxchg_acquire(ptr, old, new);
+}