blob: b9f2f4780073267ec784209f744165cf05f7abd5 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
|
// SPDX-License-Identifier: GPL-2.0
//! Atomic primitives.
//!
//! These primitives have the same semantics as their C counterparts: and the precise definitions of
//! semantics can be found at [`LKMM`]. Note that Linux Kernel Memory (Consistency) Model is the
//! only model for Rust code in kernel, and Rust's own atomics should be avoided.
//!
//! # Data races
//!
//! [`LKMM`] atomics have different rules regarding data races:
//!
//! - A normal write from C side is treated as an atomic write if
//! CONFIG_KCSAN_ASSUME_PLAIN_WRITES_ATOMIC=y.
//! - Mixed-size atomic accesses don't cause data races.
//!
//! [`LKMM`]: srctree/tools/memory-model/
#[allow(dead_code, unreachable_pub)]
mod internal;
pub use internal::AtomicImpl;
|
