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| author | Boqun Feng <boqun.feng@gmail.com> | 2026-03-03 12:16:53 -0800 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2026-03-08 11:06:48 +0100 |
| commit | a92236bf239cc01fd40d9cbe98fc8b9924c42a82 (patch) | |
| tree | 036b0d8e55990b8bd0575720e61278c41a050812 /rust | |
| parent | f92d22b00e3f75fad2efd965b20d49b4e763b792 (diff) | |
| download | lwn-a92236bf239cc01fd40d9cbe98fc8b9924c42a82.tar.gz lwn-a92236bf239cc01fd40d9cbe98fc8b9924c42a82.zip | |
rust: helpers: Generify the definitions of rust_helper_*_cmpxchg*
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
Diffstat (limited to 'rust')
| -rw-r--r-- | rust/helpers/atomic_ext.c | 48 |
1 files changed, 12 insertions, 36 deletions
diff --git a/rust/helpers/atomic_ext.c b/rust/helpers/atomic_ext.c index c5f665bbe785..240218e2e708 100644 --- a/rust/helpers/atomic_ext.c +++ b/rust/helpers/atomic_ext.c @@ -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); -} - -__rust_helper bool rust_helper_atomic_i16_try_cmpxchg(s16 *ptr, s16 *old, s16 new) -{ - 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); -} - -__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); +#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_i8_try_cmpxchg_relaxed(s8 *ptr, s8 *old, s8 new) -{ - return try_cmpxchg_relaxed(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_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) |