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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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rust: helpers: Add i8/i16 atomic xchg_release helpers

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

[boqun: Use xchg_release() instead of raw_xchg_release()]

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/20251223062140.938325-4-fujita.tomonori@gmail.com

authored by

FUJITA Tomonori and committed by
Boqun Feng 1bfca1e7 ab717dd9

+10
+10
rust/helpers/atomic_ext.c
··· 70 70 { 71 71 return xchg_acquire(ptr, new); 72 72 } 73 + 74 + __rust_helper s8 rust_helper_atomic_i8_xchg_release(s8 *ptr, s8 new) 75 + { 76 + return xchg_release(ptr, new); 77 + } 78 + 79 + __rust_helper s16 rust_helper_atomic_i16_xchg_release(s16 *ptr, s16 new) 80 + { 81 + return xchg_release(ptr, new); 82 + }