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| author | Boqun Feng <boqun.feng@gmail.com> | 2026-03-03 12:16:52 -0800 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2026-03-08 11:06:48 +0100 |
| commit | f92d22b00e3f75fad2efd965b20d49b4e763b792 (patch) | |
| tree | e256f4092819149f445acdee0636cb15354e3f18 /rust/helpers | |
| parent | ecc8e9fbaac35c8e5cced26f740f846506c4737b (diff) | |
| download | lwn-f92d22b00e3f75fad2efd965b20d49b4e763b792.tar.gz lwn-f92d22b00e3f75fad2efd965b20d49b4e763b792.zip | |
rust: helpers: Generify the definitions of rust_helper_*_xchg*
To support atomic pointers, more xchg 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/20260117122243.24404-3-boqun.feng@gmail.com
Link: https://patch.msgid.link/20260303201701.12204-5-boqun@kernel.org
Diffstat (limited to 'rust/helpers')
| -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 f471c1ff123d..c5f665bbe785 100644 --- a/rust/helpers/atomic_ext.c +++ b/rust/helpers/atomic_ext.c @@ -44,45 +44,21 @@ GEN_READ_SET_HELPERS(i16, s16) * The architectures that currently support Rust (x86_64, armv7, * arm64, riscv, and loongarch) satisfy these requirements. */ -__rust_helper s8 rust_helper_atomic_i8_xchg(s8 *ptr, s8 new) -{ - return xchg(ptr, new); -} - -__rust_helper s16 rust_helper_atomic_i16_xchg(s16 *ptr, s16 new) -{ - return xchg(ptr, new); -} - -__rust_helper s8 rust_helper_atomic_i8_xchg_acquire(s8 *ptr, s8 new) -{ - return xchg_acquire(ptr, new); -} - -__rust_helper s16 rust_helper_atomic_i16_xchg_acquire(s16 *ptr, s16 new) -{ - return xchg_acquire(ptr, new); -} - -__rust_helper s8 rust_helper_atomic_i8_xchg_release(s8 *ptr, s8 new) -{ - return xchg_release(ptr, new); -} - -__rust_helper s16 rust_helper_atomic_i16_xchg_release(s16 *ptr, s16 new) -{ - return xchg_release(ptr, new); +#define GEN_XCHG_HELPER(tname, type, suffix) \ +__rust_helper type \ +rust_helper_atomic_##tname##_xchg##suffix(type *ptr, type new) \ +{ \ + return xchg##suffix(ptr, new); \ } -__rust_helper s8 rust_helper_atomic_i8_xchg_relaxed(s8 *ptr, s8 new) -{ - return xchg_relaxed(ptr, new); -} +#define GEN_XCHG_HELPERS(tname, type) \ + GEN_XCHG_HELPER(tname, type, ) \ + GEN_XCHG_HELPER(tname, type, _acquire) \ + GEN_XCHG_HELPER(tname, type, _release) \ + GEN_XCHG_HELPER(tname, type, _relaxed) \ -__rust_helper s16 rust_helper_atomic_i16_xchg_relaxed(s16 *ptr, s16 new) -{ - return xchg_relaxed(ptr, new); -} +GEN_XCHG_HELPERS(i8, s8) +GEN_XCHG_HELPERS(i16, s16) /* * try_cmpxchg helpers depend on ARCH_SUPPORTS_ATOMIC_RMW and on the |