diff options
Diffstat (limited to 'rust/kernel/sync/atomic')
| -rw-r--r-- | rust/kernel/sync/atomic/internal.rs | 8 | ||||
| -rw-r--r-- | rust/kernel/sync/atomic/predefine.rs | 4 |
2 files changed, 9 insertions, 3 deletions
diff --git a/rust/kernel/sync/atomic/internal.rs b/rust/kernel/sync/atomic/internal.rs index 1b2a7933bc14..0dac58bca2b3 100644 --- a/rust/kernel/sync/atomic/internal.rs +++ b/rust/kernel/sync/atomic/internal.rs @@ -37,10 +37,16 @@ pub trait AtomicImpl: Sized + Send + Copy + private::Sealed { type Delta; } +// The current helpers of load/store uses `{WRITE,READ}_ONCE()` hence the atomicity is only +// guaranteed against read-modify-write operations if the architecture supports native atomic RmW. +#[cfg(CONFIG_ARCH_SUPPORTS_ATOMIC_RMW)] impl AtomicImpl for i8 { type Delta = Self; } +// The current helpers of load/store uses `{WRITE,READ}_ONCE()` hence the atomicity is only +// guaranteed against read-modify-write operations if the architecture supports native atomic RmW. +#[cfg(CONFIG_ARCH_SUPPORTS_ATOMIC_RMW)] impl AtomicImpl for i16 { type Delta = Self; } @@ -274,7 +280,7 @@ declare_and_impl_atomic_methods!( ); declare_and_impl_atomic_methods!( - [ i32 => atomic, i64 => atomic64 ] + [ i8 => atomic_i8, i16 => atomic_i16, i32 => atomic, i64 => atomic64 ] /// Exchange and compare-and-exchange atomic operations pub trait AtomicExchangeOps { /// Atomic exchange. diff --git a/rust/kernel/sync/atomic/predefine.rs b/rust/kernel/sync/atomic/predefine.rs index 51e9df0cf56e..248d26555ccf 100644 --- a/rust/kernel/sync/atomic/predefine.rs +++ b/rust/kernel/sync/atomic/predefine.rs @@ -149,7 +149,7 @@ mod tests { #[test] fn atomic_xchg_tests() { - for_each_type!(42 in [i32, i64, u32, u64, isize, usize] |v| { + for_each_type!(42 in [i8, i16, i32, i64, u32, u64, isize, usize] |v| { let x = Atomic::new(v); let old = v; @@ -162,7 +162,7 @@ mod tests { #[test] fn atomic_cmpxchg_tests() { - for_each_type!(42 in [i32, i64, u32, u64, isize, usize] |v| { + for_each_type!(42 in [i8, i16, i32, i64, u32, u64, isize, usize] |v| { let x = Atomic::new(v); let old = v; |