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rust: helpers: Generify the definitions of rust_helper_*_cmpxchg*

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To support atomic pointers, more cmpxchg helpers will be introduced,
hence define macros to generate these helpers to ease the introduction
of the future helpers.

Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://patch.msgid.link/20260117122243.24404-4-boqun.feng@gmail.com
Link: https://patch.msgid.link/20260303201701.12204-6-boqun@kernel.org
This commit is contained in:
Boqun Feng
2026-03-03 12:16:53 -08:00
committed by Peter Zijlstra
parent f92d22b00e
commit a92236bf23
1 changed files with 12 additions and 36 deletions
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48
rust/helpers/atomic_ext.c
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@@ -67,42 +67,18 @@ GEN_XCHG_HELPERS(i16, s16)
* The architectures that currently support Rust (x86_64, armv7,
* arm64, riscv, and loongarch) satisfy these requirements.
*/
__rust_helper bool rust_helper_atomic_i8_try_cmpxchg(s8 *ptr, s8 *old, s8 new)
{
return try_cmpxchg(ptr, old, new);
#define GEN_TRY_CMPXCHG_HELPER(tname, type, suffix) \
__rust_helper bool \
rust_helper_atomic_##tname##_try_cmpxchg##suffix(type *ptr, type *old, type new)\
{ \
return try_cmpxchg##suffix(ptr, old, new); \
}
__rust_helper bool rust_helper_atomic_i16_try_cmpxchg(s16 *ptr, s16 *old, s16 new)
{
return try_cmpxchg(ptr, old, new);
}
#define GEN_TRY_CMPXCHG_HELPERS(tname, type) \
GEN_TRY_CMPXCHG_HELPER(tname, type, ) \
GEN_TRY_CMPXCHG_HELPER(tname, type, _acquire) \
GEN_TRY_CMPXCHG_HELPER(tname, type, _release) \
GEN_TRY_CMPXCHG_HELPER(tname, type, _relaxed) \
__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);
}
__rust_helper bool rust_helper_atomic_i8_try_cmpxchg_release(s8 *ptr, s8 *old, s8 new)
{
return try_cmpxchg_release(ptr, old, new);
}
__rust_helper bool rust_helper_atomic_i16_try_cmpxchg_release(s16 *ptr, s16 *old, s16 new)
{
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);
}
GEN_TRY_CMPXCHG_HELPERS(i8, s8)
GEN_TRY_CMPXCHG_HELPERS(i16, s16)